EP0642290A3 - Mobile communication apparatus with speech processing device - Google Patents

Mobile communication apparatus with speech processing device Download PDF

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Publication number
EP0642290A3
EP0642290A3 EP94202513A EP94202513A EP0642290A3 EP 0642290 A3 EP0642290 A3 EP 0642290A3 EP 94202513 A EP94202513 A EP 94202513A EP 94202513 A EP94202513 A EP 94202513A EP 0642290 A3 EP0642290 A3 EP 0642290A3
Authority
EP
European Patent Office
Prior art keywords
signal
processing device
mobile communication
communication apparatus
microphone
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP94202513A
Other languages
German (de)
French (fr)
Other versions
EP0642290A2 (en
Inventor
Walter Prof. Dr. Ing. C/O Philips Kellermann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Philips Intellectual Property and Standards GmbH
Koninklijke Philips NV
Original Assignee
Philips Intellectual Property and Standards GmbH
Koninklijke Philips Electronics NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Philips Intellectual Property and Standards GmbH, Koninklijke Philips Electronics NV filed Critical Philips Intellectual Property and Standards GmbH
Publication of EP0642290A2 publication Critical patent/EP0642290A2/en
Publication of EP0642290A3 publication Critical patent/EP0642290A3/en
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/005—Circuits for transducers, loudspeakers or microphones for combining the signals of two or more microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
    • H04R1/406—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2430/00—Signal processing covered by H04R, not provided for in its groups
    • H04R2430/20—Processing of the output signals of the acoustic transducers of an array for obtaining a desired directivity characteristic
    • H04R2430/23—Direction finding using a sum-delay beam-former

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • General Health & Medical Sciences (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Die Erfindung bezieht auf ein Mobilfunkgerät mit mindestens zwei Mikrophonen (M1, ...,MN). Diese dienen zur Lieferung von aus Sprach- und Störsignalanteilen (s1, ..., sN, n1, ..., nN) bestehenden Mikrophonsignalen (x1, ..., xN) an Mikrophonsignalzweige, die mit den Eingängen einer zur Bildung eines Summensignals (x) dienenden Addiervorrichtung (5) gekoppelt sind.The invention relates to a mobile device with at least two microphones (M 1 , ..., M N ). These serve for the delivery of voice and interference signal components (s 1 , ..., s N , n 1 , ..., n N ) existing microphone signals (x 1 , ..., x N ) to microphone signal branches, with the Inputs of an adder (5) serving to form a sum signal (x) are coupled.

Es wird vorgeschlagen, in den Mikrophonsignalzweigen Mittel (3) zur Gewichtung der Mikrophonsignale (x1, ..., xN) mit auf einfache Weise zu berechnenden Gewichtsfaktoren (c1, ..., cN) vorzusehen, um das Signal/Rausch-Verhältnis (SNR) des Summensignals (x) zu erhöhen.It is proposed to provide in the microphone signal branches means (3) for weighting the microphone signals (x 1 ,..., X N ) with weight factors (c 1 ,..., C N ) to be calculated in a simple manner in order to obtain the signal / Noise ratio (SNR) of the sum signal (x) increase.

Die Sprachverarbeitungsvorrichtung wird vorzugsweise in eine Freisprecheinrichtung des Mobilfunkgeräts integriert.

Figure imgaf001
The voice processing device is preferably integrated in a hands-free device of the mobile device.
Figure imgaf001
EP94202513A 1993-09-07 1994-09-02 Mobile communication apparatus with speech processing device Withdrawn EP0642290A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4330243 1993-09-07
DE4330243A DE4330243A1 (en) 1993-09-07 1993-09-07 Speech processing facility

Publications (2)

Publication Number Publication Date
EP0642290A2 EP0642290A2 (en) 1995-03-08
EP0642290A3 true EP0642290A3 (en) 2006-04-19

Family

ID=6497058

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94202513A Withdrawn EP0642290A3 (en) 1993-09-07 1994-09-02 Mobile communication apparatus with speech processing device

Country Status (4)

Country Link
US (1) US5602962A (en)
EP (1) EP0642290A3 (en)
JP (1) JP3373306B2 (en)
DE (1) DE4330243A1 (en)

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Also Published As

Publication number Publication date
EP0642290A2 (en) 1995-03-08
JP3373306B2 (en) 2003-02-04
DE4330243A1 (en) 1995-03-09
JPH07240992A (en) 1995-09-12
US5602962A (en) 1997-02-11

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