Búsqueda Imágenes Maps Play YouTube Noticias Gmail Drive Más »
Iniciar sesión
Usuarios de lectores de pantalla: deben hacer clic en este enlace para utilizar el modo de accesibilidad. Este modo tiene las mismas funciones esenciales pero funciona mejor con el lector.

Patentes

  1. Búsqueda avanzada de patentes
Número de publicaciónUS20070204696 A1
Tipo de publicaciónSolicitud
Número de solicitudUS 11/799,222
Fecha de publicación6 Sep 2007
Fecha de presentación1 May 2007
Fecha de prioridad29 Abr 1996
También publicado comoUS5811681, US6416482, US6644120, US7210353, US20040074304, US20050148900
Número de publicación11799222, 799222, US 2007/0204696 A1, US 2007/204696 A1, US 20070204696 A1, US 20070204696A1, US 2007204696 A1, US 2007204696A1, US-A1-20070204696, US-A1-2007204696, US2007/0204696A1, US2007/204696A1, US20070204696 A1, US20070204696A1, US2007204696 A1, US2007204696A1
InventoresLeroy Braun, Jack Foreman
Cesionario originalDiagnostic Group, Llc
Exportar citaBiBTeX, EndNote, RefMan
Enlaces externos: USPTO, Cesión de USPTO, Espacenet
Multimedia feature for diagnostic instrumentation
US 20070204696 A1
Resumen
A system for automatedly administering an audiometric test includes an audiometer for performing the test by outputting test tones, and a processor programmed for monitoring responses to the test tones, detecting an error condition, automatically delivering audible corrective instructions to address the error condition detected, and automatically resuming outputting test tones after the audible corrective instructions have been delivered without intervention by a human test administrator.
Imágenes(9)
Previous page
Next page
Reclamaciones(18)
1. A multimedia audiometer comprising:
a basic audiometer comprising:
audio circuitry capable of generating audible test tones for delivery to earphones worn by a test subject according to logical testing procedures; and
microprocessor circuitry including a central processing unit (CPU) and a memory;
a computer selectively operable to produce instructions represented by sound waves for delivery to the earphones, the computer being operatively coupled to the basic audiometer;
an interface operatively coupled to the computer and the basic audiometer for signaling whether the test subject perceives the audible test tones generated by the audio circuitry;
a switch having a first state in which audible test tones generated by the audio circuitry are provided to the earphones, and a second state in which the instructions represented by sound waves produced by the computer are provided to the earphones;
software stored in at least one of the computer and the memory of the microprocessor circuitry, the software operating the computer, the microprocessor circuitry, the audio circuitry and the interface to generate the audible test tones for delivery to the earphones, monitor responses by the test subject, detect errors in the test subject's responses, selectively produce the instructions for delivery to the earphones in response to the detected errors, and to control the switch to switch to the second state when errors are detected in the test subject's responses and to automatically switch back to the first state following delivery of the instructions to the earphones so that testing is resumed without human intervention;
a multimedia input interface communicatively connecting the computer and the basic audiometer; and
a communications interface communicatively connecting the computer and the basic audiometer;
wherein the computer and the basic audiometer communicate over the communications interface and the computer controls operation of the basic audiometer over the communications interface.
2. The multimedia audiometer of claim 1, wherein the computer includes a sound wave generator for converting digital information to analog signals representative of the digital information.
3. The multimedia audiometer of claim 1, wherein the switch is connected to deliver test tones from the basic audiometer to the earphones in the first state, and to deliver the instructions represented by sound waves produced by the computer via the multimedia input interface to the earphones in the second state.
4. The multimedia audiometer of claim 1, wherein the responses of the test subject are compiled and stored in at least one of the computer and the memory of the microprocessor circuitry.
5. The multimedia audiometer of claim 4, wherein the software operates the computer, the microprocessor circuitry, the audio circuitry and the interface according to a pre-programmed logical testing procedure.
6. The multimedia audiometer of claim 5, wherein the logical testing procedure is the Hughson-Westlake procedure.
7. The multimedia audiometer of claim 1, wherein the software is stored in the computer.
8. The multimedia audiometer of claim 1, wherein the software is stored in the memory of the microprocessor circuitry.
9. A multimedia audiometer comprising:
a test signal generator for delivering a test tone to a test subject;
an input device for use by the test subject for signaling whether the test subject perceives the test tone delivered by the test signal generator;
a memory device that stores digital data representing a group of sound signals that provide different corrective instructions to the test subject to address different error situations created by the test subject; and
a processor communicatively connected to the memory device and the test signal generator to control the test signal generator to deliver test tones according to a logical testing procedure, monitor the status of the input device, detect whether an error has occurred in the input from the test subject, interrupt the delivery of test tones by the test signal generator when an error is detected, automatically locate and deliver a corrective instruction responsive to the error to the test subject from the group of sound signals, and automatically resume the delivery of test tones to the test subject without intervention by a human test administrator.
10. The multimedia audiometer of claim 9, wherein the logical testing procedure is the Hughson-Westlake procedure.
11. The multimedia audiometer of claim 9, wherein the processor is operable to automatically determine a proper manner in which to resume the delivery of test tones to the test subject following delivery of the corrective instructions responsive to the error by the test subject, based on the detected error.
12. The multimedia audiometer of claim 9, wherein the test signal generator generates test tones according to a prescribed protocol.
13. The multimedia audiometer of claim 12, wherein the prescribed protocol comprises a test tone generated by the test signal generator followed by an input from the test subject that is positive, negative or null.
14. The multimedia audiometer of claim 9, wherein the processor is associated with a computer.
15. An audiometric test system comprising:
an audiometer for producing audible test tones in a headset worn by a test subject; and
a digital processor programmed for detecting errors in the test subject's responses to the audible test tones, automatically interrupting the production of audible test tones in the headset, automatically producing in the headset audible verbal corrective instructions related to the detected errors, and then automatically resuming production of the audible test tones in the headset after the audible verbal corrective instructions are complete. without intervention by a human test administrator.
16. An audiometric test system comprising:
a headset to be worn by a test subject;
a tone generator for producing audible test tones in the headset;
an input device by which the subject provides a signal indicating that the subject has heard one of the test tones;
a memory for storing digital data representing audible verbal corrective instructions for each of a plurality of different error conditions; and
a digital processor programmed for detecting error conditions based upon signals received from the input device, automatically interrupting the production of audible test tones in the headset upon detection of an error condition, automatically selecting one of the audible verbal corrective instructions based upon the error condition detected and causing the selected audible verbal corrective instruction to be delivered to the test subject through the headset, and then automatically resuming the production of the audible test tones in a proper manner based upon the error condition detected and the audible verbal corrective instruction delivered to the subject through the headset without intervention by a human test administrator.
17. A diagnostic system comprising:
a headset to be worn by a test subject;
a test signal generator that delivers test tones to the test subject;
an input device through which the test subject responds to the test tones; and
a processor for controlling the test signal generator to perform a pre-programmed test sequence with automatic error correction without intervention by a human test administrator, the processor detecting error conditions based on the subjects responses to the test tones, automatically interrupting the delivery of test tones to deliver audible verbal corrective instructions to the test subject through the headset based upon the error condition corrected, and automatically resuming the delivery of test tones after completion of the corrective instructions based on the error condition detected.
18. A system for performing a diagnostic test protocol, comprising:
an audiometer for performing a test by outputting test tones to an earphone and monitoring a test subject's responses; and
a digital processor for detecting an error condition based on the responses, automatically delivering to the earphone audible corrective instructions based on the error condition detected, and automatically resuming the test by outputting test tones based upon the error condition detected.
Descripción
    CROSS-REFERENCE TO RELATED APPLICATION(S)
  • [0001]
    This application is a continuation of U.S. application Ser. No. 10/685,240, filed Oct. 14, 2003, now U.S. Pat. No. 7,210,353, which is a continuation of U.S. application Ser. No. 10/156,415, filed May 28, 2002, now U.S. Pat. No. 6,644,120, which is a division of U.S. application Ser. No. 09/139,858, filed Aug. 25, 1998, now U.S. Pat. No. 6,416,482, which is a continuation of U.S. application Ser. No. 08/639,694, filed Apr. 29, 1996, now U.S. Pat. No. 5,811,681.
  • BACKGROUND OF THE INVENTION
  • [0002]
    The present invention relates to a multimedia interface of a diagnostic test instrument and, more particularly, to automated testing, including multimedia-derived instructions, test monitoring, and error response, by an audiometer or other medical or diagnostic test instrument.
  • [0003]
    A wide variety of medical and diagnostic test instrumentation is known. An example of such instrumentation is an audiometer. The audiometer is an electrically activated generator of test tones for evaluation of hearing. Other medical and diagnostic instrumentations include a spirometer for measuring lung capacity, vision testing equipment, blood alcohol testing equipment, and occupational health industry maintenance testing equipment, such as blood pressure, EKG, and other wellness testing equipment. Generally, these and other prior testing instrumentations require one or more individuals to administer the test by operating the equipment and giving instructions to the test subject.
  • [0004]
    The trend in testing, however, appears to be toward automation. Through automation, reduced numbers of test administrators may be required and increased accuracy of testing, with lack of deviation caused by human administrator error, may be possible. Although certain limited automation has previously been possible, that automation has been directed primarily to the automated compilation, organization, and reporting of data in desirable formats. Processing units, such as, for example, personal computers, have previously been employed to achieve the automation of the compilation, organization, and reporting functions. Little automation, if any, has previously been achieved, however, in connection with the actual administration of the test. Administration of such tests has typically been performed almost wholly by one or more human test administrators.
  • [0005]
    Hearing testing has for several decades been performed utilizing an instrument called an audiometer. Prior to the audiometer, tuning forks and other tone generating devices were employed. In the early testing, a test subject responded directly to a test administrator who recorded test results based on the administrator's subjective determinations. The advent of the audiometer, an electronic instrument that generates tones, provided a degree of standardization in hearing testing because uniform tones and proper calibrations are better achieved.
  • [0006]
    Even after the invention of the audiometer, however, hearing testing was far from standardized, as testing varied in both procedures and determinations. A standardized procedure, still followed today, was then developed for hearing testing. That procedure is referred to as the “Hughson-Westlake” procedure. Other procedures are followed in some instances, but the Hughson-Westlake procedure is probably the most common.
  • [0007]
    In the Hughson-Westlake procedure, tones at a level audible to the test subject, such as, for example, 30 dB, are first presented to the subject. The test subject responds that the tones are heard, and then the level of the tones are reduced by 10 dB. This is repeated with the test subject responding that the tones are heard followed by 10 dB reductions until the test subject's response (or lack of response) indicates that the tones are not heard. When the test subject so responds that the tones are not heard, the tone level is raised 5 dB. If the test subject does not then respond, the level is raised another 5 dB, and this is repeated until the test subject signals that the tone is heard. This entire process is repeated until the test subject has three ascending positive responses at the same level. In order to make comparison of hearing quality over time, a first test is administered to establish a base line hearing level and later testing, undertaken at subsequent time intervals, provides results for comparison to base line. The comparison indicates any hearing loss or other changes over time.
  • [0008]
    As with diagnostic and industrial health testing instruments, generally, audiometers have progressed towards more automation. Also as with other instruments, however, automation of audiometers has typically focused on compilation, organization, and reporting of test results. The automation has not been directed to replacement of a human test administrator (or at least the traditional functions of such an administrator) by a machine automated process.
  • [0009]
    As previously mentioned, automation, particularly by a machine such as a computer, achieves certain advantages. In particular, the testing may be more uniform among subjects and test periods, whereas testing is subject to variation when a human test administrator administers and grades the test. Also, supplying human test administrators to conduct tests is rather costly. Reducing the required number of test administrators through further automation of testing procedures may reduce or eliminate those costs. Furthermore, test presentation and determined results may vary among human test administrators. More standardized and accurate testing may be possible if intervention of a human test administrator is reduced through further automation. In addition to those advantages, certain automation may provide added advantages, for example, multi-lingual test administration, multiple simultaneous different tests, multiple simultaneous test subjects, visual features, and other possibilities.
  • [0010]
    Embodiments of the present invention provide advantages of multimedia automation in diagnostic testing employing electronic or other instrumentation. The embodiments are particularly suited in the case of an audiometer, however, numerous other applications of the embodiments are possible. The above-described advantages, as well as other advantages, are achieved through the embodiments. The present invention is, thus, a significant improvement in the art and technology.
  • SUMMARY OF THE INVENTION
  • [0011]
    An embodiment of the invention is a method for automatedly administering an audiometric test. The method comprises the steps of controlling an audiometer to selectively switch the audiometer output between test tones generated by the audiometer and sound signals generated from digital information, first switching the audiometer output to sound signals when the step of controlling indicates a beginning of a new test, a completion of a current test, or a test error, outputting sound representative of the sound signals after the step of first switching, second switching the audiometer output to test tones after the step of outputting, and outputting test tones until the next step of first switching.
  • [0012]
    Another embodiment of the invention is a multimedia audiometer. The multimedia audiometer comprises means for outputting sound signals generated from digital information, means for outputting test tones, means for switching between the means for outputting sound signals and the means for outputting test tones, and means for controlling the means for switching, the means for controlling being communicatingly connected with the means for switching. The means for switching is communicatingly connected with the means for outputting sound signals and the means for outputting test tones.
  • [0013]
    Yet another embodiment of the invention is a multimedia audiometer. The multimedia audiometer comprises a computer, a tone generator, and a switch connected with the computer and the tone generator. The switch selectively causes either the tone generator or the computer to output sound waves, and the computer controls the switch.
  • [0014]
    Another embodiment of the invention is an audiometer. The audiometer comprises a processor, a memory, communicatingly connected with the processor, for storing digital data, a sound wave generator, for generating analog sound signals in respect of digital data, electrically connected with the processor, a test tone generator electrically connected with the processor, and a switch connected with the sound wave generator, the test tone generator, and the processor. The switch is controlled by the processor to selectively cause either the sound wave generator or the test tone generator to output sound waves.
  • [0015]
    A further embodiment of the invention is an instrument that conducts a test protocol on a test subject. The test protocol comprises an output by the instrument followed by an input to the instrument. The test subject determines the input, which input may be positive, negative, or null. The instrument comprises an output generator, an input detector for detecting the input, a digital data storage for storing a digital data, a multimedia converter, the multimedia converter converts the digital data to an analog signal, and logic circuitry connected to the input detector, the digital data storage, the multimedia converter, and the output generator, for logically operating on the input, reading the digital data, delivering the digital data to the multimedia converter, and controlling the output generator.
  • [0016]
    Yet another embodiment of the invention is a multimedia audiometer. The multimedia audiometer comprises a basic audiometer, a computer, a multimedia input interface communicatingly connecting the computer and the basic audiometer, and a communications interface communicatingly connecting the computer and the basic audiometer.
  • [0017]
    Another embodiment of the invention is a diagnostic instrument. The diagnostic instrument comprises means for outputting an audible sound, means for generating a test tone, means for storing a digital data, means for generating an analog signal derived from the digital data, means for switching an output of the means for outputting between the test tone and the analog signal, the means for switching being electrically connected to the means for generating a test tone and the means for generating an analog signal, means for processing, means for inputting, the means for inputting connects the means for processing to the means for outputting, and the means for communicating, the means for communicating connects the means for processing to the means for outputting, the means for generating the test tone, the means for storing the digital data, the means for generating the analog signal, the means for switching, and the means for inputting.
  • [0018]
    Yet another embodiment of the invention is a method of performing a diagnostic test protocol. The method comprises the steps of outputting an audible sound, generating a test tone, storing a digital data, generating an analog sound derived from the digital data, switching the audible sound from the step of outputting between the test tone and the analog signal, processing the digital data, and controlling the steps of outputting, generating the test tone, storing, generating the analog sound, and switching.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • [0019]
    FIG. 1 is a functional block diagram of a conventional audiometer;
  • [0020]
    FIG. 2 is a detailed schematic of a typical audiometer, corresponding to the functional block diagram of FIG. 1;
  • [0021]
    FIG. 3 is a schematic of a talkover card for use with the audiometer of FIG. 2;
  • [0022]
    FIG. 4 is a block diagram of an audiometer interfaced with a personal computer for multimedia automation of audiometer testing;
  • [0023]
    FIG. 5 is a functional block diagram of an audiometer interfaced with a multimedia personal computer;
  • [0024]
    FIG. 6 is a schematic of the personal computer connection with the talkover card of FIG. 3, to provide multimedia automation of audiometer testing; and
  • [0025]
    FIG. 7 is a flow diagram of a protocol for audiometric testing utilizing the multimedia features of the embodiments of the present invention to automate the test process.
  • DETAILED DESCRIPTION
  • [0026]
    Referring to FIG. 1, a functional block diagram of a conventional audiometer 2 may be described. Although the following discussion primarily addresses embodiments of the present invention employed for an audiometer, the embodiments have varied application in a wide variety of medical and diagnostic instrumentation. All those applications are intended as included within the scope of the invention. Also, the following describes various embodiments of the present invention as particularly employed with the conventional audiometer 2. It is to be understood that the conventional audiometer 2 is detailed only for example purposes, and all other alternative audiometer configurations, as well as other instrumentation and configurations thereof, are also applications for the invention in accordance with the principles herein.
  • [0027]
    Conventional Audiometer
  • [0028]
    The conventional audiometer 2 is generally comprised of three parts: microprocessor circuitry 4, audio circuitry 6, and certain optional elements 8. In addition to those three parts, the conventional audiometer 2 includes a power supply and related elements not shown in the functional block diagram. One example of the conventional audiometer 2 is the RA250 Microprocessor Audiometer available from TREMETRICS, Inc., Austin, Tex. Of course, as previously mentioned, the conventional audiometer 2 illustrated is shown only for purposes of illustration and example. Other audiometers and other types of medical and diagnostic instrumentation are also within the scope of the invention.
  • [0029]
    Microprocessor Circuitry
  • [0030]
    The microprocessor circuitry 4 of the conventional audiometer 2 may include a processing unit (CPU) 12, such as, for example, an Intel™ 8085 microprocessor or another microprocessor. The CPU 12 serves to coordinate and control operations and functions of the conventional audiometer 2. The CPU 12 conductively connects with various memory, such as, for example, erasable programmable read only memory (EPROM) 14 and random access memory (RAM) 16. The memory 14, 16 may serve to store a software protocol which controls the CPU 12 to cause the conventional audiometer 2 to provide audiometric functions. The memory 14, 16 may also serve to maintain certain variables to achieve desired operations and calibration of the conventional audiometer 2, or simply to provide storage for values made available to and from the CPU 12.
  • [0031]
    In addition to the memory 14, 16, the CPU 12 conductively connects with various input and output ports and peripherals. Input and output ports may include a serial I/O port 22 and a parallel interface 24. The serial I/O port 22 may provide connections for certain optimal elements 8, as hereinafter discussed. The parallel interface 24 may connect with an input device, for example, a keyboard 20. The parallel interface 24 may also connect with the audio circuitry 6, as later explained. Another input device, such as a display 18, for example, may connect with the memory 14, 16, CPU 12, and other features of the microprocessor circuitry 4. Such other features of the microprocessor circuitry 4 may include, for example, certain programmable registers 26 and other elements.
  • [0032]
    Audio Circuitry
  • [0033]
    Now discussing the audio circuitry 6 of the conventional audiometer 2, the audio circuitry 6 interfaces with the microprocessor circuitry 4 in several ways. The programmable registers 26 may serve as ports that connect with an oscillator (also “frequency generator”) 30. The oscillator 30 may provide timing for a sine wave generator 32 that produces a digitally synthesized sine wave from which audible test tones are derived. Because the sine wave generator 32 produces a digitally synthesized wave, the wave may be smoothed by a low pass filter 34.
  • [0034]
    The low pass filter 34 may connectively interface with the parallel interface 24 of the microprocessor circuitry 4. Other elements of the audio circuitry 6, such as frequency selector 36, an electronic attenuator 38, a pulse control 40, a relay control attenuator 42, and a handswitch jack 44, may conductively connect with the parallel interface 24 to complete the interface of the audio circuitry 6 with the microprocessor circuitry 4 of the conventional audiometer. Pursuant to this interface arrangement, the audio circuitry 6 and the microprocessor circuitry 4 may communicate signals for control and other purposes.
  • [0035]
    In addition to the connection of the low pass filter 34 with the parallel interface 24, the low pass filter 34 may conductively connect with frequency compensation circuitry, such as, for example, a frequency selector 36 that, together with the control provided through the parallel interface 24, helps compensate for attenuation. Other elements, such as the electronic attenuator 38 which connects with the frequency selector 36, also provide compensation for attenuation. The sine wine generator 32 feeds the pulse control 40 which, together with input to the pulse control 40 from the electronic attenuator 38, delivers signals representative of desired test tones to a power amplifier 46. The power amplifier 46 feeds the relay control attenuator 42 for left and right earphone signals. The relay control attenuator 42 is conductively connected with an earphone jack 48.
  • [0036]
    In order to allow a test subject to interface with the audio circuitry 6, earphone speakers 50 and a handswitch 52 may be provided. The earphone speakers 50 may plug into the earphone jack 48. The test subject wearing the earphone speakers 50 will then receive test tones generated by the conventional audiometer 2. The handswitch 52 may plug into the handswitch jack 44. The handswitch 52 provides means for the test subject to interface with the conventional audiometer 2 in order to signal to the conventional audiometer 2 that the test subject either does or does not correctly receive test tones through the earphone speakers 50.
  • [0037]
    Options
  • [0038]
    In addition to the basic elements just described, the conventional audiometer 2 may include certain optional elements 8. Various optional elements 8 are possible, depending upon desired operations and functions. Two common optional elements 8 of the conventional audiometer 2 have been an RS232 port 8 a and a talkover card 8 b. The RS232 port 8 a may conductively connect to the serial I/O port 22 to allow communications of the microprocessor circuitry 4 with external peripherals (not shown) connected with the RS232 port 8 a. Examples of external peripherals which may connect to the RS232 port 8 a may include printers, terminals, and modems. The RS232 standard and suitable connections to ports conforming thereto are generally known.
  • [0039]
    The other of the common optional elements 8, the talkover card 8 b, is of particular significance in embodiments of the present invention. The talkover card 8 b is conductively connected with the audio circuitry 6 of the conventional audiometer 2 between the relay control attenuator 42 and the earphone jack 48. In effect, the talkover card 8 b serves as a switch to divert input to the earphone jack 48 when desired by a human test administrator (not shown). The human test administrator may selectively “throw” the switch and cause the input to the earphone jack 48 to switch from signals from the relay control attenuator 42 representative of test tones to signals representative of the human test administrator's instructions then being voiced. Details of the talkover card 8 b are hereinafter more fully discussed with respect to FIG. 3.
  • [0040]
    Referring now to FIG. 2, a detailed schematic of the conventional audiometer 2 of FIG. 1 is shown. Those skilled in the art will understand and appreciate the electrical elements and connectivities of the detailed schematic.
  • [0041]
    Referring now to FIG. 3, a detailed schematic is provided of the talkover card 8 b of the conventional audiometer 2. The talkover card 8 b comprises a fixed gain operational amplifier 60. A voice microphone 62 is an input to the amplifier 60. Other common electronic elements, such as, for example, resistors, capacitors, and others, may be included in the circuitry of the talkover card 8 b. The amplifier 60 is connected to the input to the earphone jack 48 of the audio circuitry 6 of the conventional audiometer 2 (shown in FIG. 1) by a relay 64 a. When a human test administrator wishes to deliver voice sounds, rather than test tones, to a test subject wearing the earphone speakers 50 plugged into the earphone jack 48 (shown in FIG. 1), the test administrator causes the relay 64 a to be thrown. The test administrator, by such action, simultaneously causes the conventional audiometer 2 to interrupt the test then in progress, discontinuing test tone generation.
  • [0042]
    Referring to FIGS. 1-3, in conjunction, the relay 64 a when so thrown connects the amplifier 60, across switches 66 a, to the input to the earphone jack 48. In particular, electrical connector 68 passes the voice signals from the amplifier 60 to the earphone jack 48 for delivery through the right ear speaker of the earphone speakers 50 and electrical connector 70 similarly passes the voice signals to the left ear speaker. When relay 64 a results in closure of its switches 66 a, relay 64 b results in opening of its switches 66 b, and vice versa. In this manner, either voice signals through the talkover card 8 b or test tone signals through the audio circuitry 6 at any instant, but not both simultaneously, is delivered through the earphone speakers 50. As those skilled in the art will understand and appreciate, this design of the conventional audiometer 2 has allowed a human test administrator to interrupt test tone testing to give instructions, error messages, and other voice commands. The conventional audiometer 2 has required intervention of a human test administrator, however, by selectively throwing relays 64 a,b and speaking into microphone 62 of the talkover card 8 b, in order to conduct hearing test with intermittent instructions and messages.
  • [0043]
    Multimedia Embodiments
  • [0044]
    Referring now to FIG. 4, a multimedia audiometer 100, according to embodiments of the present invention, may be described. The multimedia audiometer 100 includes a basic audiometer 200 having the basic elements of the conventional audiometer 2 (shown in FIG. 1). That is, the multimedia audiometer 100 is also comprised of the microprocessor circuitry 4 and the audio circuitry 6 (or other similar processing and audio electronics and circuits) of the conventional audiometer 2 (shown in FIG. 1). The earphone speakers 50 and the handswitch 52 are also interfaced with the basic audiometer 200.
  • [0045]
    Although the multimedia audiometer 100 and the conventional audiometer 2 share these similar basic elements, the basic audiometer 200 is merely a subset of the entire multimedia audiometer 100, as is apparent in FIG. 4. In addition to the elements of the basic audiometer 200, 2, the multimedia audiometer 100 includes a computer 102, such as a personal computer, another type of computer, or some other processing and storage device. The computer 102 may be equipped and connected with peripherals, such as a keyboard 106 and a display monitor 104, as well other known input/output, communications, printing, and peripheral equipment. In any event, the computer 102 should have multimedia capabilities, that is, the computer 102 should be capable of producing sound waves and/or visual images from representative digital information stored, generated, and/or manipulated within or by the computer 102.
  • [0046]
    The computer 102 may be conductively connected with the basic audiometer 200 through two interfaces: a communications interface 108 and a multimedia input interface 110. The communications interface 108 may allow for serial, parallel, or other communications. If communications are serial, the communications interface 108 may connect the computer 102 with the RS232 port 8 a (shown in FIG. 1) in standard manner, as though the basic audiometer 200 is peripheral to the computer 102. The multimedia input interface 110 requires, however, that the conventional audiometer 2 be modified in certain respects to provide the basic audiometer 200 for multimedia automation of testing, as hereafter described.
  • [0047]
    Referring now to FIG. 5, the communications interface 108 and the multimedia input interface 110 connect the computer 102 with the basic audiometer 200 to form the multimedia audiometer 100, as shown in functional block form. A serial input/output port (not shown in detail) of the computer 102 may directly connect via the communications interface 108 with RS232 port 8 a of the basic audiometer 200. A multimedia output port (not shown in detail) of the computer 102 may directly connect via the multimedia input interface 110 with a multimedia talkover card 118 b, similar to the talkover cord 8 b (shown in FIG. 3) of the conventional audiometer 2. The multimedia output port of the computer 102 may, for example, be a port of a sound card (not shown in detail) from which sound signals are output by the computer 102. Alternatively or additionally, other multimedia outputs (not shown) of the computer 102, for example, graphical image or video outputs, may connect with the multimedia input interface 110 in similar manner. The talkover card 8 b (shown in FIG. 3) of the conventional audiometer 2 configuration has not previously provided a port for connection of the multimedia input interface 110. The conventional audiometer 2 may, therefore, be adapted to provide such port. The adapted conventional audiometer 2 is the basic audiometer 200.
  • [0048]
    Referring now to FIG. 6, a sound port 120 of a multimedia talkover card 118 b for multimedia input to the basic audiometer 200 may be described. The sound port 120 connects with the multimedia input interface 110, so that multimedia outputs of the computer 2 are input to the multimedia talkover card 118 b. The sound port 120 may include a connector 120 a to which the multimedia input interface 110 may be plugged. The connector 120 a may be attached with two input leads 120 b. The input leads 120 a,b may be attached with an audio jack plug 121. The audio jack plug 121 is insertable in an audio jack 122 connected to the amplifier 60 output. When the audio jack plug 121 not is inserted in the audio jack 122, the output of amplifier 60 is shorted prior to the switches 66 a. When the audio jack plug 121 is inserted in the audio jack 122, however, the circuit is completed and the computer 102 connected to the sound port 120 may supply multimedia input to the switches 66 a. In effect, the microphone 62 is substituted with the multimedia input via the sound port 120. All other features of the multimedia talkover card 118 b are substantially the same as the features of the talkover card 8 b of the prior technology.
  • [0049]
    Although the input leads 120 b of the sound port 120 are shown as connected with an output of the amplifier 60 in Figure, alternatively, the input leads 120 b could in similar manner connect with inputs to the amplifier 60 or at some other location prior to or after the amplifier 60. Furthermore, although the multimedia talkover card 118 b is expressly described as a “card” to the basic audiometer 200, it is to be understood that any other functional elements and circuitry that perform similarly, such as, for example, a relay circuit that switches between the tone generator of the basic audiometer 200 and the multimedia output from the computer 102, as well as other possibilities, are all within the scope of the invention.
  • [0050]
    Now referring to FIG. 7, in conjunction with FIGS. 4-6, operations 300 of the multimedia audiometer 100 and the software driving those operations 300 are discussed. When power is supplied to the multimedia audiometer 100, the basic audiometer 200, as well as the computer 102, may perform various set-up functions 302. Those set-up functions 302 of the multimedia audiometer 100, for example, boot-up and initialization of the computer 102 and start-up and initialization of the basic audiometer 200, are conventional. The start-up and initialization of the basic audiometer 200 may be substantially the same as that of the conventional audiometer 2 (shown in FIG. 1).
  • [0051]
    Generally, this start-up and initialization of the basic audiometer 200 may proceed, for example, as follows:
      • At turn-on, the basic audiometer 200 presents a first tone and a message appears on the display 18. The basic audiometer 200 is now ready for operation. If a processing error by the CPU 12 is discovered during the turn-on, an appropriate message is displayed.
  • [0053]
    The following example illustrates an initialization procedure for the basic audiometer 200. Keys of the keyboard 20 are indicated by [ ] and messages in quotes. To begin, press:
    KEYBOARD DISPLAY
    [SPECIAL] SPC00
    [ENTER] MM DD YY
  • [0054]
    Now enter today's date. For example:
    KEYBOARD DISPLAY COMMENT
    [04 30 96] OM DD YY
  • [0055]
    The message “mode pulsed” then appears on the display 18. Press [NO] to switch to continuous mode. “Continuous Mode” will be displayed. Press [ENTER] when the desired code is displayed. The display should now read “1KL AA AUTO” and then displays “PRESS [NEW TEST]”. Other parameters which may be selected include the test other ear first and delete 8000 Hz. To do this, press:
    KEYBOARD DISPLAY COMMENT
    [SPECIAL] SPC 04
    [04] SPC 04
    [ENTER] LEFT EAR FIRST
    [NO] RIGHT EAR FIRST
    [ENTER] 1KR AA AUTO (Now testing right
    ear first)
    [SPECIAL] SPC 06
    [06] SPC 06
    [ENTER] 8KR SEL AUTO
    [NO] 8KR DEL AUTO
    [ENTER] 1KR AA AUTO (8 Khz is deleted)
      • The basic audiometer 200 is now initialized.
  • [0057]
    Any or all of the above-mentioned parameters can be changed at any time by entering a desired special routine. Various “Special” codes that may be possible with the basic audiometer 200 of the multimedia audiometer 100 may, for example, include the following:
    SPECIAL FUNCTION
    00 Initialization of audiometer
    01 Enter date and time
    02 Mode Pulsed/Continuous
    03 Enter Examiner ID
    04 Invent runtable to test better ear first
    05 Select Printer Format
    06 Select or Delete 8K
    07 Select Baud rate
    08 Turn on or off audio feedback for key pushes
    09 Accelerated listening check
    10 Check calibration date
    11 Call Ram Rock check
    12 Calibration mode and program calibration eeprom
    13 Printer Text
    14 Not used
    15 Display routine for time and date (no entry)
    16 Not used
    17 Display selected audiogram
    18 Print selected audiogram or audiograms
    19 Display and/or enter serial number
    20 Not used
  • [0058]
    Software protocols to accomplish the start-up and initialization of the basic audiometer 200 may be stored in the memory 14, 16 of the basic audiometer 200 or elsewhere. Processing and control for the start-up and initialization of the set-up functions 302 are performed by the CPU 12 of the basic audiometer 200. Alternatively, the basic audiometer 200 could be controlled by the computer 102 to perform the start-up and initialization, or start-up and initialization could be controlled manually or in some other manner.
  • [0059]
    After the set-up functions 302, including start-up and initialization of the basic audiometer 200, are completed, the basic audiometer 200 may be ready to begin administering a new audiometric test of a test subject. A new test may be begun, for example, by pressing a key of the basic audiometer 200 or, alternatively, by a similar input to the computer 102. Upon the start of the new test, the computer 102 may control the basic audiometer 200 by communications over the communications interface 108 (shown in FIGS. 4-5).
  • [0060]
    If initial instructions to the test subject are desired, the computer 102 may control 304 the basic audiometer 200 over the communications interface 108 (shown in FIGS. 4-5). This control 304 may trigger the relay 64 a and the relays 64 b (shown in FIG. 2) to close the switches 66 a and open the switches 66 b (shown in FIG. 2), respectively. When the switches 66 a are closed and the switches 66 b are opened in this manner, sound signals passed to the sound port 120 from the computer 102 over the multimedia input interface 110 are delivered through the amplifier 69 of the multimedia talkover card 118 b and through the earphone jack 48 to the earphone speakers 50.
  • [0061]
    The particular sound signals so passed to the earphone speakers 50 may be derived from digital information stored or generated in, or read by, the computer 102. The computer 102 may select and output 306 signals representative of the particular digital information. If the testing is just beginning, the signals so selected and output 306 may be initial instructions to the test subject about the test and the testing procedure. Of course, the particular signals could be representative of virtually any type of information which is subject to derivation from digital data. Although sound is described here as being derived from digital data, those skilled in the art will know and appreciate that digital data may be manipulated and processed in a multitude of ways to derive other types of information, for example, visual graphics and images and others.
  • [0062]
    After the computer has selected and output 306 the desired sound signals to the basic audiometer 200 and signals have been delivered to the test subject as sound waves through the earphone speakers 50, the computer 102, again may control 308 the basic audiometer 200. The control 308 at this instant may trigger the relay 64 a to close the switches 66 a and the relays 66 b (shown in FIG. 2) to open the switches 66 b, respectively. The control 308, then, causes the basic audiometer 200 to generate 310 a series of test tones, such as, for example, tones in accordance with the Hughson-Westlake procedure or another testing protocol.
  • [0063]
    When the switches 66 a are closed and the switches 66 b are opened because of the control 308, the test tones generated 310 by the audio circuitry 6 of the basic audiometer 200 are delivered through the earphone jack 48 to the earphone speakers 50. According to the particular testing protocol, the test subject may respond to the test tones by input 312 via the handswitch 52 connected to the basic audiometer 200. The basic audiometer 200, in cooperation with the computer 102, will detect and determine any error 314 of the input 312 response.
  • [0064]
    If there is not any error 316, then the basic audiometer 200 may continue to generate successive test tones 320 according to the particular test protocol, until the test is completed 322. The successive test tones 320 are generated in the same manner as previously described. That is, the basic audiometer 200 operates to generate test tones 310 delivered to the test subject; the test subject responds with input 312 via the handswitch 52; and the audiometer 200, in conjunction with the computer 102, detects and determines 314 any error.
  • [0065]
    If an error 318 is detected and determined 314, the computer 102, based on its particular programmed logic, determines 324 whether to proceed 326 with the testing, to re-test 328, or to perform some other function (not shown). Certain errors that may be encountered during the administration of the test include, for example, the following:
      • No response at 1 kHz, Error Code E1, signifies that the test subject is not responding to the test tone. The test subject may receive a multimedia sound message, generated by the computer 102 and passed through the earphone speakers 50, as to how to take the test, for example, as follows:
        • “There has been no response for any tone in the initial test—as soon as you hear a tone cut it off by pressing and releasing the hand switch.”
      • Then, the test may be restarted.
      • Failed to Establish Threshold, Error Code E2, signifies that the basic audiometer 200 is unable to establish a hearing threshold level (HTL) from the response of the test subject. The test subject may be instructed based on digital data of the computer 102, for example, as follows:
        • “The audiometer has been unable to establish a threshold—listen for the tone and as soon as you hear the tone cut it off by pressing and releasing the hand switch.”
      • The test may then recommence.
      • Hand Switch Error, Error Code E4, signifies that the test subject is not releasing the response handswitch 52. The test subject may, for example, receive the following instructions generated from the digital data stored by computer 102:
        • “The audiometer is recognizing the hand switch as being on for a length of time—as soon as you hear a tone cut it off by pressing and releasing the hand switch.”
      • The test may then recommence.
  • [0075]
    Response no tone, Error Code E5, signifies that the test subject has
      • responded at least three times when no tone or stimulus was present. A multimedia message, for example, as follows, may be delivered through the earphone speakers 50:
        • “The audiometer is recognizing responses when no tone is present—as soon as you hear a tone cut it off by pressing and releasing the hand switch.”
      • The test is, thereafter, restarted.
  • [0079]
    The foregoing error codes, multimedia messages, and operations are merely example possibilities. An example of an entire error code list is as follows:
    Error
    Code Indication Multimedia Audiometer Response
    AA Not Tested
    DD Deleted Frequency
    EE No Response Test Continues
    EF Test Incomplete
    EB 25 Presentations Test Continues
    No HTL
    E1 No Response Stops Test Repeat Instructions
    1 KHz
    E2 1 KHz Stops Test Repeat Instructions
    25 Presentations
    No HTL
    E3 1 KHz Retest Error Stops Test Repeat Instructions
    E4 Hand Switch Error Stops Test Holding Switch MSG
    E5 Response No Tone Stops Test Response w/window closed
    E6 Error For Stops Test Examiner Intervention
    Second Time
    E7 Max. Failed Stops Test Examiner Intervention
    Frequencies >6
    E8 Hardware Error Only seen at Turnon and After
    EPROM Diagnostic Check
      • Error Codes That Do Not Stop Test
      • EE
      • Error Codes that Get Instructions and Resume Testing
      • EB—Same as E2 message
      • E1
      • E2
      • E4
      • E5
      • Error Codes That Stop Test and Pop Up Message on PC for Operator Test Does Not Restart
      • E3
      • E6
      • E7
  • [0092]
    In the case that a re-test 328 is warranted because of an error or otherwise, the operations 300 begin anew with the computer control 304 of the basic audiometer 200 over the communications interface 108 (shown in FIGS. 4-5) to trigger the relays 64 a,b. The testing thereafter proceeds through the steps of selections and output 306, computer control 308, test tone generation 310, test subject response input 312, and detection and error determination 314.
  • [0093]
    Once the entire test protocol is completed in the foregoing manner, the test is completed 322. The computer 102 may then control 330 the basic audiometer 200 to trigger the relays 64 a,b to close the switches 66 a and to open the switches 66 b. The control 330 is accomplished in the manners previously described by communications between the computer 102 and the basic audiometer 200 over the communications interface 108.
  • [0094]
    After the control 330 so sets the switches 66 a,b, the computer 102 may further select and output 340 sound signals, which sound signals are derived from digital data stored, generated or read by the computer 102. The sound signals may travel to the earphone jack 48 and the earphone speakers 50 to deliver final instructions and messages to the test subject.
  • [0095]
    Numerous alternatives and variations are possible for the multimedia audiometer 100. For example, digital data stored, generated or read by the computer 102 may be representative of a wide variety of sounds, images, video, or other multimedia features. In certain embodiments, the particular digital data may allow the test subject to select any of a number of different languages through which testing is administered. Further, digital data may be manipulated by the computer 102 in such a manner that multiple simultaneous tests may be administered. There are, of course, numerous other possibilities.
  • [0096]
    There are also many possible variations and alternatives in the configuration of the computer 102 and the basic audiometer 200 by providing the audiometer with additional memory, processing, wave sound generation, and appropriate software. Alternatively, the computer 102 could include a test tone generation means and appropriate software programming to perform the functions of the basic audiometer 200. Even further, the multimedia audiometer 100 could be implemented by using a programmable digital tape player or compact disc (CD) player and allowing the basic audiometer 200 to select desired tracks to play. Other alternatives may be possible, it being understood that those skilled in the art will generally know and appreciate that the employment of computer or other control of instrumentation operations during test administration and the use of multimedia features for instruction, messages, and other herebefore required human administrative actions is possible with the incorporation of digital data, according to the embodiments of the present invention, from which are derived multimedia features.
  • [0097]
    It is to be understood that multiple variations, changes and modifications are possible in the aforementioned embodiments of the invention. Although illustrative embodiments of the invention have been shown and described, a wide range of modification, change, and substitution is contemplated in the foregoing disclosure and, in some instances, some features of the present invention may be employed without a corresponding use of the other features. Accordingly, it is appropriate that the foregoing description be construed broadly and understood as being given by way of illustration and example only, the spirit and scope of the invention being limited only by the appended claims.
  • [0098]
    Although the present invention has been described with reference to preferred embodiments, workers skilled in the art will recognize that changes may be made in form and detail without departing from the spirit and scope of the invention.
Citas de patentes
Patente citada Fecha de presentación Fecha de publicación Solicitante Título
US3392241 *20 Oct 19649 Jul 1968Beltone Electronics CorpAutomatic physiological testing apparatus
US3745674 *3 Feb 197217 Jul 1973Cohn EHearing tester
US3793485 *14 Dic 197219 Feb 1974Audiometric Teleprocessing IncPrecision automatic audiometer
US3808354 *13 Dic 197230 Abr 1974Audiometric Teleprocessing IncComputer controlled method and system for audiometric screening
US3809811 *10 Ago 19727 May 1974Univ SherbrookeSystem for conducting automatically an audiometric test
US3905131 *11 Oct 197316 Sep 1975Audiometric Teleprocessing IncAudiometric pretest trainer
US3974335 *6 Jun 197410 Ago 1976Richard BessermanHearing test by telephone including recorded results
US3977394 *7 Feb 197531 Ago 1976Jones Medical Instrument CompanyComputerized pulmonary analyzer
US4022975 *15 Mar 197610 May 1977Alvin KrassPsychological testing apparatus
US4024499 *24 Jun 197417 May 1977Oto-Data, Inc.Audiometric system
US4038496 *15 May 197526 Jul 1977Audiometric Teleprocessing, Inc.Portable bekesy type diagnostic audiometer
US4107465 *22 Dic 197715 Ago 1978Centre De Recherche Industrielle Du QuebecAutomatic audiometer system
US4157456 *15 Feb 19785 Jun 1979U.S. Philips CorporationAudiometer
US4224468 *5 Oct 197823 Sep 1980Calder Jr Howard BMasking level difference adaptor for audiometers
US4275744 *19 Nov 197930 Jun 1981Wisconsin Alumni Research FoundationAuditory response detection method and apparatus
US4284847 *8 Feb 198018 Ago 1981Richard BessermanAudiometric testing, analyzing, and recording apparatus and method
US4321427 *18 Sep 197923 Mar 1982Sadanand SinghApparatus and method for audiometric assessment
US4476724 *5 Nov 198216 Oct 1984Robert Bosch GmbhAudiometer
US4489610 *11 Abr 198425 Dic 1984Intech Systems Corp.Computerized audiometer
US4548082 *28 Ago 198422 Oct 1985Central Institute For The DeafHearing aids, signal supplying apparatus, systems for compensating hearing deficiencies, and methods
US4615007 *14 Sep 198430 Sep 1986Audiometrics, Inc.Audiologic testing method and apparatus with compensating means for soundwave attenuation through a transmitting medium
US4667683 *11 Jun 198526 May 1987Biolectron, Inc.Audiometer
US4731850 *26 Jun 198615 Mar 1988Audimax, Inc.Programmable digital hearing aid system
US4764957 *20 Ago 198516 Ago 1988Centre National De La Recherche Scientifique-C.N.R.S.Earpiece, telephone handset and headphone intended to correct individual hearing deficiencies
US4768165 *19 Sep 198530 Ago 1988Siemens AktiengesellschaftComputer interface unit for an audiometer
US4847763 *24 Feb 198711 Jul 1989Westra Electronic GmbhLaser audiometer system
US4862505 *23 Oct 198729 Ago 1989Keith William JAudiometer with interactive graphic display for children
US4933873 *2 Jun 198812 Jun 1990Healthtech Services Corp.Interactive patient assistance device
US4964304 *18 Mar 198823 Oct 1990Eckstein Leo KAudiometric testing method and apparatus
US5023783 *8 Jun 199011 Jun 1991The University Of MelbourneEvoked response audiometer for testing sleeping subjects
US5111506 *2 Mar 19895 May 1992Ensonig CorporationPower efficient hearing aid
US5119826 *31 Jul 19909 Jun 1992Nederlandse Stichting Voor Het Dove En Slechthorende KindMethod and apparatus for screening the hearing of a young child
US5197332 *19 Feb 199230 Mar 1993Calmed Technology, Inc.Headset hearing tester and hearing aid programmer
US5239872 *22 Oct 199231 Ago 1993Meyer Bisch ChristianApparatus for the purpose of measuring the sensitivity of a subject to the perception of a vibration
US5282475 *2 Nov 19921 Feb 1994Doron UrbachApparatus and method for audiometry
US5303327 *2 Jul 199112 Abr 1994Duke UniversityCommunication test system
US5363859 *10 Jun 199115 Nov 1994Topical Testing, Inc.Tactile testing device and methods
US5428998 *12 Ene 19944 Jul 1995Bam World Markets, Inc.Method and apparatus for testing an infant for hearing defects
US5511982 *14 May 199230 Abr 1996Robert PigacheDevice for testing a person's attention
US5525977 *6 Dic 199311 Jun 1996Prince CorporationPrompting system for vehicle personalization
US5562104 *6 Abr 19948 Oct 1996Movemap, Inc.Measuring movement disorder
US5645074 *17 Ago 19948 Jul 1997Decibel Instruments, Inc.Intracanal prosthesis for hearing evaluation
US5737389 *18 Dic 19957 Abr 1998At&T Corp.Technique for determining a compression ratio for use in processing audio signals within a telecommunications system
US5811681 *29 Abr 199622 Sep 1998Finnigan CorporationMultimedia feature for diagnostic instrumentation
US6118877 *12 Oct 199512 Sep 2000Audiologic, Inc.Hearing aid with in situ testing capability
US6366863 *9 Ene 19982 Abr 2002Micro Ear Technology Inc.Portable hearing-related analysis system
US6416482 *25 Ago 19989 Jul 2002Leroy BraunMultimedia feature for diagnostic instrumentation
US6496585 *27 Ene 200017 Dic 2002Robert H. MargolisAdaptive apparatus and method for testing auditory sensitivity
US6644120 *28 May 200211 Nov 2003Bernafon, Inc.Multimedia feature for diagnostic instrumentation
USRE34961 *26 May 19926 Jun 1995The Minnesota Mining And Manufacturing CompanyMethod and apparatus for determining acoustic parameters of an auditory prosthesis using software model
Citada por
Patente citante Fecha de presentación Fecha de publicación Solicitante Título
US942659926 Nov 201323 Ago 2016Dts, Inc.Method and apparatus for personalized audio virtualization
US97733995 Mar 201426 Sep 2017Church & Dwight Co., Inc.Diagnostic test device with audible feedback
US97947157 Mar 201417 Oct 2017Dts LlcSystem and methods for processing stereo audio content
WO2014158850A1 *5 Mar 20142 Oct 2014Church & Dwight Co., Inc.Diagnostic test device with audible feedback
Clasificaciones
Clasificación de EE.UU.73/585
Clasificación internacionalA61B5/12
Clasificación cooperativaA61B5/121
Clasificación europeaA61B5/12D