CN101098168B - Bluetooth transmission device for hearing-aids and corresponding transmission method - Google Patents
Bluetooth transmission device for hearing-aids and corresponding transmission method Download PDFInfo
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- CN101098168B CN101098168B CN2007101262745A CN200710126274A CN101098168B CN 101098168 B CN101098168 B CN 101098168B CN 2007101262745 A CN2007101262745 A CN 2007101262745A CN 200710126274 A CN200710126274 A CN 200710126274A CN 101098168 B CN101098168 B CN 101098168B
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- bluetooth
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
- H04R25/55—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception using an external connection, either wireless or wired
- H04R25/554—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception using an external connection, either wireless or wired using a wireless connection, e.g. between microphone and amplifier or using Tcoils
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
- H04R25/55—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception using an external connection, either wireless or wired
- H04R25/558—Remote control, e.g. of amplification, frequency
Abstract
The invention relates to a wireless audio transmitting device. For instance a wireless audio transmission from a TV set to a hearing device should apply a simple device and keep a small signal relay. The device has a transmission unit (13) for transmission of audio data into a Bluetooth signal, and a hearing aid coder (14) integrated into the unit for compression of the audio data before transmission. A code conversion is not executed in a relay station (16) during the transformation. The transmission unit transmits the signal according to an Advanced Audio Distribution Profile (A2DP) protocol, and the coder scans as an A2DP coder, where the coder has a scanning rate that is less than a standard Bluetooth coder. The system results in the minimization of the coding relay and processing relay in the relay station.
Description
Technical field
The present invention relates to a kind of transmitting device that is used for to the hearing devices transmitting audio data; It has be used for Bluetooth signal send voice data dispensing device, be integrated in and be used for the encoder that before transmission, voice data compressed in this dispensing device, and be used for converting the Bluetooth signal of dispensing device into be transferred to the signal of hearing devices relay station with being used to respond to.The invention still further relates to a kind of correlation method that is used for to the hearing devices transmitting audio data in addition.
Background technology
Have increasing demand with voice or music from television equipment or HiFi equipment wireless, be transferred to hearing devices to the broadband.Especially this transmission also should be able to pass to have two hearing devices hearing system to offer ears.
For ANTENNAUDIO transmission main employing FM equipment or infrared equipment to hearing devices.What relate at this is the device that the plug-in module as hearing devices that replaces hearing devices to use provides, or is integrated in the device of the extra position of significant need in the hearing devices.
Audio transmission can be considered multiple electromagnetic transmission approach on the principle.Therefore for example can adopt high frequency far field transmission system and inductive near field transmission system.Can overlap the short distance to hearing devices (less than 1 to 2 meter) of saving position and electric current by numeral, inductive transmission systems.But the far field transmission system that need be used at a distance (coverage is about 10 meters) for the audio transmission of television equipment or HiFi equipment for significant operation.
In disclosed patent application DE 10 2,005 005 603.2, disclose a kind of data transmission device that is used for to the hearing devices wireless data transmission, it comprises high-frequency receiving device, is used to receive the high-frequency modulation signal of outside dispensing device.Mixing arrangement is used for this high-frequency modulation signal is mixed with the reference signal of similar high frequency mutually, thereby can produce the output signal of modulation, and its carrier frequency hangs down an one magnitude at least and is suitable for the induction transmission.At last, the output signal to hearing devices transmits through dispensing device induction ground.The result of this conversion method is the minimum delay time on whole wireless path, because given up demodulation, decoding fully and modulate again and encode.But the shortcoming of this transmission is whole wireless path must be constituted with responding to, because must be complementary with the data rate of induction span line at the data rate of high-frequency transmission section.
Summary of the invention
Therefore the present invention's technical problem that will solve is, proposes low transmitting device of a kind of development cost and corresponding transmission method.
Technical problem of the present invention solved to the transmitting device of hearing devices transmitting audio data through a kind of being used for, and this transmitting device has dispensing device, is used for sending voice data at Bluetooth signal; Be integrated in the encoder in this dispensing device, be used for before transmission, voice data being compressed; And relay station; Be used for the Bluetooth signal of dispensing device is transferred to with converting induction into the signal of hearing devices; Wherein, In this relay station, when changing, do not carry out code conversion, this dispensing device sends corresponding to bluetooth A2DP agreement, and this encoder is with the scan rate work lower than standard A 2DP encoder.
According to the present invention, a kind of method that is used for to the hearing devices transmitting audio data has also correspondingly been proposed, wherein, voice data is encoded; This voice data is sent to relay station in Bluetooth signal; And this Bluetooth signal is transferred to the signal of hearing devices with converting induction into.Wherein, when changing, do not carry out code conversion; Transmission is carried out according to bluetooth A2DP agreement; And to encode than the low scan rate of standard A 2DP encoder.
Therefore preferably can adopt modular unit such as bluetooth transmitters and Bluetooth Receiver, and corresponding Bluetooth transmission protocol.With the modular unit of blue tooth transmission system according to voice applications cutting (for example error protection).
According to the present invention, in case of necessity can bi-directional transfer of data.Therefore also can be from the transmission path of hearing devices through part of standardsization to outside equipment transmission data.
Preferably relay station is integrated in the remote control of one or more hearing devices, but for example also can be integrated in the television remote control.The user needn't use additional device for wireless data transmission for this reason.
Advantageously audio bandwidth through after the encoder compresses less than 15kHz.Especially audio bandwidth is between 8 to 12kHz.Make audio data stream send a side thus, make and information processed can not arrive hearing devices just by such compression.
Data rate in the preferred in addition Bluetooth signal is lower than 150kBit/s.Need not thus special compression is implemented in the transmission of the induction in base band.
Description of drawings
Below describe the present invention in detail by accompanying drawing.Wherein,
Fig. 1 illustrates has the transmission system that is used to decode with the relay station of recompile;
Fig. 2 illustrates of the present inventionly to have relay station and need not the transmission system of recompile.
Embodiment
The following stated execution mode is a preferred implementation of the present invention.But at first introduce the transmission system in the known prior art shown in Figure 1 in order to understand the present invention better.
Corresponding to system shown in Figure 1,, need to transmit stereo audio signal 1 to hearing devices or hearing system from television equipment or HiFi equipment in order to provide to ears.This audio signal 1 is scanned and coding in bluetooth transmitters 3.Data are compressed and are made up by block-by-block ground in coding.Bluetooth transmitters 3 is supported the multiple standards encoder, wherein is adopted as the encoder 4 that transmission is selected.Typically scanning has 44.1 or the audio signal 1 of 48kHz in bluetooth A2DP agreement, is 20～24kHz thereby make the audio bandwidth that sends signal.Data rate r_bt typically is 230～350kBit/s.Standard bluetooth span line 5 makes that can reach about 10 meters coverage carries out radio communication.
In remote control 6, be provided with standard bluetooth receiver, so that the voice data of having encoded on Bluetooth transmission section 5 is decoded with passive bluetooth decoder 7.The induction transmission to hearing system 2 for subsequently must be with the data rate value of being reduced to r_hg.Therefore in remote control 6, be provided with hearing devices encoder 8, it correspondingly reduces data rate the audio bandwidth that is provided with and 8～10kHz is provided.Coded data sends hearing system 2 to through the induction span line like this.Each hearing devices of hearing system 2 all has a corresponding hearing devices decoder 10,11.
Therefore the bigger distance that standard transmission method that can be through being taken to the hearing devices remote control is come cross-over connection television equipment or HiFi equipment to hearing devices with the expense of minimum and minimum expense.Adopt bluetooth approach as the standard transmission method, it is to transmit the most widely used standard for wireless stereo audio in the building.At last, " last rice " from the remote control to the hearing devices is the induction cross-over connection.
Specifically, audio signal digitlization and pass to relay station, be remote control 6 in bluetooth dispatching station 3 by standard audio host-host protocol A2DP.This standard protocol specifies be the support of SBC to unofficial encoding and decoding.Can adopt the encoding and decoding such as the MP3 of other definition in addition, operation is not suitable for (because high operating delay) but it is for TV.This standard also makes and can define/use the encoding and decoding relevant with manufacturer in addition.
As stated, on Bluetooth transmission section 5 according to the high relatively data volume of standard transmission.Data rate r_bt=230～350kBit/s in SBC.But the transmission to hearing devices should and be saved electric current ground and carry out with as far as possible little assembly as far as possible.Therefore selected induction span line 9 at this, but must reduce message transmission rate above that, to raise the efficiency and correspondingly to save electric current.Reduce data through in relay station or remote control 6, being that the data flow of hearing devices realizes with the code conversion of bluetooth A2DP data flow.
But the solution of wireless transmission section shown in Figure 1 has some shortcomings.The first is low according to the blue-teeth data transmission efficient for the operation of hearing devices with high bandwidth of standard.Its reason is hearing devices because different quality requirements all (is about 8～10kHz) as moving for the voice applications of general hearing (magnitude 20kHz) with lower audio bandwidth usually.Code conversion in this external relay station causes audio quality to reduce and current drain is increased, and the working life of relay station is reduced.Another shortcoming is, because feasible voice and increase time of delay of music from the television equipment to the hearing devices of the processing delay of double coding delay (the long audio block on the bluetooth section) and remote control.When audio transmission and the image synchronization that will guarantee from the television set to the hearing devices; And when causing color or the brightness of the music do not expected or voice signal through the audio signal stack from the direct voice of television set and transmission, this is considered to especially crucial.
Therefore, adopt the system shown in Fig. 2 principle according to the present invention.In dispatching station 13, TV or HiFi signal 1 are converted into the hearing devices form of expectation by hearing devices encoder 14.This representes through audio bandwidth 8-10kHz.Encode like this through 14 pairs of signals of hearing devices encoder in addition, make to provide the data rate r_hg that is fit to induction span line subsequently.This corresponding block length through data block is realized.
In remote control 16, utilize the standard bluetooth receiver to receive the blue-teeth data stream of hearing devices form, and be forwarded to the inductive activity of remote control 16 with can not adding code conversion or digital scan conversion.Therefore among Fig. 2 Bluetooth Receiver and inductive activity are expressed as bypass 17.Remaining data transmission segment, identical in promptly responding to span line 9 and having hearing devices encoder 10 and 11 hearing system 2 and Fig. 1.Therefore, in whole transmission, at identical with on induction span line 9 of the effective data rate on the bluetooth section 15 and clock rate, i.e. r_bt=r_hg according to Fig. 2.
Because adopting bluetooth standard can make to hearing devices wearer's span line simply and seldom develop and the realization of cost efficient ground." last rice " that is implemented to hearing devices by induction section 9 can especially be saved the energy.The hearing devices encoder is arranged in the bluetooth dispatching station 13 and therein the hearing devices clock scanned bring following advantage:
A) can improve the efficient of dispatching station and remote control.Promptly can utilize Billy to implement with the obviously little data rate of the standard application of SBC through the Bluetooth transmission of A2DP agreement.Current drain in dispatching station and the relay station is reduced.Saved the big code conversion of expense in this external remote control, this makes has again further saved electric current.Therefore especially in relay station, can realize the longer battery operation time or less change battery.
B) because the encoding and decoding of bluetooth encoding and decoding (coding/decoding) and hearing devices all are the conversion with loss, therefore improved the audio quality of whole signal because Fig. 2 according to system of the present invention in coding/decoding of need only.
C) whole system important quality characteristic is the delay of audio signal through transmitting.The color and the brightness that on the one hand in TV uses, in hearing devices wearer's ear, superpose and cause disturbing from the direct voice of television equipment and signal through wireless radio transmission.Must guarantee the synchronous of image and sound on the other hand.Utilize method of the present invention to make and reach minimum time of delay through a coding delay in the cancellation remote control and a processing delay.
Claims (10)
1. transmitting device that is used for to hearing devices (2) transmitting audio data has:
Dispensing device (13), this dispensing device is used for sending voice data at Bluetooth signal;
Encoder (14), this encoder are integrated in this dispensing device (13), and this encoder is used for before transmission, voice data being compressed;
Relay station (16), this relay station are used for the Bluetooth signal of dispensing device (13) is transferred to with converting induction into the signal of hearing devices (2);
It is characterized in that,
In this relay station (16), when changing, do not carry out code conversion;
This dispensing device (13) sends corresponding to bluetooth A2DP agreement; And
This encoder (14) is with the scan rate work lower than standard A 2DP encoder.
2. transmitting device according to claim 1, wherein, said transfer of data is two-way carries out.
3. transmitting device according to claim 1, wherein, said relay station (16) is integrated in the remote control.
4. according to each described transmitting device in the claim 1 to 3, wherein, through the audio bandwidth after said encoder (14) compression less than 15kHz.
5. transmitting device according to claim 4, wherein, said audio bandwidth is between 8 to 12kHz.
6. according to each described transmitting device in the claim 1 to 3, wherein, the data rate in the Bluetooth signal is lower than 150kBit/s.
7. method that is used for to hearing devices (2) transmitting audio data has step:
Voice data is encoded;
This voice data is sent to relay station (16) in Bluetooth signal;
This Bluetooth signal is transferred to with converting induction into the signal of hearing devices (2);
It is characterized in that,
When changing, do not carry out code conversion;
Said transmission is carried out corresponding to bluetooth A2DP agreement; And
To encode than the low scan rate of standard A 2DP encoder.
8. method according to claim 7, wherein, said transfer of data is two-way carrying out.
9. according to claim 7 or 8 described methods, wherein, the audio bandwidth behind the coding is less than 15kHz.
10. according to claim 7 or 8 described methods, wherein, the data rate in the Bluetooth signal is lower than 150kBit/s.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102006029196.4 | 2006-06-26 | ||
| DE200610029196 DE102006029196B4 (en) | 2006-06-26 | 2006-06-26 | Bluetooth transmission device for hearing aids and corresponding transmission method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101098168A CN101098168A (en) | 2008-01-02 |
| CN101098168B true CN101098168B (en) | 2012-10-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101262745A Active CN101098168B (en) | 2006-06-26 | 2007-06-26 | Bluetooth transmission device for hearing-aids and corresponding transmission method |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1874088B1 (en) |
| JP (1) | JP4749390B2 (en) |
| CN (1) | CN101098168B (en) |
| AU (1) | AU2007202880B2 (en) |
| DE (1) | DE102006029196B4 (en) |
| DK (1) | DK1874088T3 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101217038B (en) * | 2008-01-17 | 2011-06-22 | 中兴通讯股份有限公司 | An encoding method of audio data SBC algorithm and Bluetooth stereo subsystem |
| DE102008019107A1 (en) | 2008-04-16 | 2009-10-29 | Siemens Medical Instruments Pte. Ltd. | Measuring device for measuring input and output characteristics of hearing device, has measuring chamber for holding hearing device, where high-frequency transmission module is provided for transmitting measuring signal |
| DE102008050351A1 (en) | 2008-10-02 | 2010-04-08 | Siemens Medical Instruments Pte. Ltd. | System for transmitting audio data to hearing aid, has transmitter unit for emitting radio signal with audio data, where delay unit is provided for delaying audio data released by acoustic waves by predetermined delay value |
| JP5342720B2 (en) * | 2009-03-24 | 2013-11-13 | パナソニック株式会社 | Audio image reproduction system, hearing aid, audio image processing apparatus |
| DE102014204557A1 (en) * | 2014-03-12 | 2015-09-17 | Siemens Medical Instruments Pte. Ltd. | Transmission of a wind-reduced signal with reduced latency |
| CN106792466B (en) * | 2016-12-26 | 2020-10-09 | 歌尔科技有限公司 | Method for communication between equipment end and host end |
| CN108271144B (en) * | 2018-03-23 | 2023-12-19 | 杜宁 | Bluetooth device and system for carrying out data bidirectional mutual transmission with terminal |
| CN108738006B (en) * | 2018-05-31 | 2021-06-25 | 出门问问信息科技有限公司 | Data transmission method and device based on Bluetooth |
| CN108966197A (en) * | 2018-08-20 | 2018-12-07 | 南昌黑鲨科技有限公司 | Audio frequency transmission method, system, audio-frequence player device and computer readable storage medium based on bluetooth |
| CN111050306A (en) * | 2018-10-15 | 2020-04-21 | 北京轩辕联科技有限公司 | Extended connection method and extended connection system for Bluetooth device |
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| CN1427555A (en) * | 2001-12-19 | 2003-07-02 | 无线电射频系统公司 | Repeater for wireless communication system |
| US6690657B1 (en) * | 2000-02-25 | 2004-02-10 | Berkeley Concept Research Corporation | Multichannel distributed wireless repeater network |
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| US6208740B1 (en) * | 1997-02-28 | 2001-03-27 | Karl Grever | Stereophonic magnetic induction sound system |
| AT411950B (en) * | 2001-04-27 | 2004-07-26 | Ribic Gmbh Dr | METHOD FOR CONTROLLING A HEARING AID |
| WO2003013068A1 (en) * | 2001-07-30 | 2003-02-13 | Sony Corporation | Radio communication system, radio communication control apparatus, radio communication control method, recording medium, and computer program |
| FR2829650B1 (en) * | 2001-09-13 | 2004-07-09 | Cit Alcatel | INTER-NETWORK GATEWAY FOR DIGITAL SIGNAL TRANSMISSION |
| DE10200796A1 (en) * | 2002-01-11 | 2003-07-31 | Reinhard Dagefoerde | Accessory for hearing aid is short-range data radio receiver, especially Bluetooth receiver, whose output can be connected to audio connection of hearing aid |
| JP3754423B2 (en) * | 2003-03-11 | 2006-03-15 | 株式会社東芝 | Electronic equipment and programs |
| GB0406091D0 (en) * | 2004-03-17 | 2004-04-21 | Koninkl Philips Electronics Nv | Radio repeater |
| US20060039577A1 (en) * | 2004-08-18 | 2006-02-23 | Jorge Sanguino | Method and apparatus for wireless communication using an inductive interface |
| DE102005005603A1 (en) * | 2005-02-07 | 2006-08-17 | Siemens Audiologische Technik Gmbh | Data transmission device for wireless data transmission for hearing aids and corresponding method |
-
2006
- 2006-06-26 DE DE200610029196 patent/DE102006029196B4/en active Active
-
2007
- 2007-05-24 DK DK07108797.7T patent/DK1874088T3/en active
- 2007-05-24 EP EP07108797.7A patent/EP1874088B1/en active Active
- 2007-06-21 AU AU2007202880A patent/AU2007202880B2/en not_active Ceased
- 2007-06-21 JP JP2007163876A patent/JP4749390B2/en active Active
- 2007-06-26 CN CN2007101262745A patent/CN101098168B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6690657B1 (en) * | 2000-02-25 | 2004-02-10 | Berkeley Concept Research Corporation | Multichannel distributed wireless repeater network |
| CN1427555A (en) * | 2001-12-19 | 2003-07-02 | 无线电射频系统公司 | Repeater for wireless communication system |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1874088A3 (en) | 2011-05-25 |
| DE102006029196A1 (en) | 2007-12-27 |
| DE102006029196B4 (en) | 2009-12-10 |
| DK1874088T3 (en) | 2015-10-12 |
| AU2007202880A1 (en) | 2008-01-17 |
| CN101098168A (en) | 2008-01-02 |
| EP1874088A2 (en) | 2008-01-02 |
| JP2008011527A (en) | 2008-01-17 |
| EP1874088B1 (en) | 2015-07-08 |
| AU2007202880B2 (en) | 2009-07-23 |
| JP4749390B2 (en) | 2011-08-17 |
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Address after: Erlangen Patentee after: Xiwantuo Co., Ltd. Address before: Erlangen Patentee before: Siemens Audiologische Technik GmbH |