WO2002078390A3 - A method and system for transmitting and/or receiving audio signals with a desired direction - Google Patents

A method and system for transmitting and/or receiving audio signals with a desired direction Download PDF

Info

Publication number
WO2002078390A3
WO2002078390A3 PCT/IL2002/000234 IL0200234W WO02078390A3 WO 2002078390 A3 WO2002078390 A3 WO 2002078390A3 IL 0200234 W IL0200234 W IL 0200234W WO 02078390 A3 WO02078390 A3 WO 02078390A3
Authority
WO
WIPO (PCT)
Prior art keywords
desired direction
transmitting
processing
acoustic
signals
Prior art date
Application number
PCT/IL2002/000234
Other languages
French (fr)
Other versions
WO2002078390A2 (en
Inventor
David Zlotnick
Original Assignee
Start Advanced Technologies Lt
David Zlotnick
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 Start Advanced Technologies Lt, David Zlotnick filed Critical Start Advanced Technologies Lt
Priority to EP02707081A priority Critical patent/EP1410678A2/en
Priority to US10/472,599 priority patent/US20040114772A1/en
Priority to AU2002241233A priority patent/AU2002241233A1/en
Publication of WO2002078390A2 publication Critical patent/WO2002078390A2/en
Publication of WO2002078390A3 publication Critical patent/WO2002078390A3/en

Links

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
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/19—Arrangements of transmitters, receivers, or complete sets to prevent eavesdropping, to attenuate local noise or to prevent undesired transmission; Mouthpieces or receivers specially adapted therefor
    • 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
    • H04R3/12—Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

A method and system are presented for carrying out at least one of the following: a process of transmitting acoustic signals from an acoustic transmitting array in a desired direction towards a subject location, and a process of receiving acoustic signals propagating in a desired direction from a subject location by an acoustic receiving array. Data indicative of the desired direction is provided and utilized for processing collected signals to be transmitted as acoustic signals through the transmitting array, and/or processing signals collected by the receiving array. The processing is based on a selected wavelet packet transform model. An output signal resulting from the processing is shaped such that maximal energy of the output signal is substantially that of the desired direction.
PCT/IL2002/000234 2001-03-22 2002-03-21 A method and system for transmitting and/or receiving audio signals with a desired direction WO2002078390A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP02707081A EP1410678A2 (en) 2001-03-22 2002-03-21 A method and system for transmitting and/or receiving audio signals with a desired direction
US10/472,599 US20040114772A1 (en) 2002-03-21 2002-03-21 Method and system for transmitting and/or receiving audio signals with a desired direction
AU2002241233A AU2002241233A1 (en) 2001-03-22 2002-03-21 A method and system for transmitting and/or receiving audio signals with a desired direction

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US27761101P 2001-03-22 2001-03-22
US60/277,611 2001-03-22

Publications (2)

Publication Number Publication Date
WO2002078390A2 WO2002078390A2 (en) 2002-10-03
WO2002078390A3 true WO2002078390A3 (en) 2004-02-19

Family

ID=23061625

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IL2002/000234 WO2002078390A2 (en) 2001-03-22 2002-03-21 A method and system for transmitting and/or receiving audio signals with a desired direction

Country Status (3)

Country Link
EP (1) EP1410678A2 (en)
AU (1) AU2002241233A1 (en)
WO (1) WO2002078390A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7346315B2 (en) * 2004-03-30 2008-03-18 Motorola Inc Handheld device loudspeaker system
CN107071688B (en) * 2009-06-23 2019-08-23 诺基亚技术有限公司 For handling the method and device of audio signal
DE102009032057A1 (en) * 2009-07-07 2011-01-20 Siemens Aktiengesellschaft Pressure wave recording and playback
CN110148401B (en) * 2019-07-02 2023-12-15 腾讯科技（深圳）有限公司 Speech recognition method, device, computer equipment and storage medium

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4586195A (en) * 1984-06-25 1986-04-29 Siemens Corporate Research & Support, Inc. Microphone range finder
WO1997029614A1 (en) * 1996-02-07 1997-08-14 Advanced Micro Devices, Inc. Directional microphone utilizing spaced-apart omni-directional microphones
WO2000014730A1 (en) * 1998-09-09 2000-03-16 Deutsche Telekom Ag Method for checking access authorisation for voice telephony at a fixed network or mobile telephone connection and corresponding communications network

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4586195A (en) * 1984-06-25 1986-04-29 Siemens Corporate Research & Support, Inc. Microphone range finder
WO1997029614A1 (en) * 1996-02-07 1997-08-14 Advanced Micro Devices, Inc. Directional microphone utilizing spaced-apart omni-directional microphones
WO2000014730A1 (en) * 1998-09-09 2000-03-16 Deutsche Telekom Ag Method for checking access authorisation for voice telephony at a fixed network or mobile telephone connection and corresponding communications network

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
CE WANG ET AL: "Robust automatic video-conferencing with multiple cameras and microphones", MULTIMEDIA AND EXPO, 2000. ICME 2000. 2000 IEEE INTERNATIONAL CONFERENCE ON NEW YORK, NY, USA 30 JULY-2 AUG. 2000, PISCATAWAY, NJ, USA,IEEE, US, 30 July 2000 (2000-07-30), pages 1585 - 1588, XP010512810, ISBN: 0-7803-6536-4 *
MAHMOUDI D ET AL: "Combined Wiener and coherence filtering in wavelet domain for microphone array speech enhancement", ACOUSTICS, SPEECH AND SIGNAL PROCESSING, 1998. PROCEEDINGS OF THE 1998 IEEE INTERNATIONAL CONFERENCE ON SEATTLE, WA, USA 12-15 MAY 1998, NEW YORK, NY, USA,IEEE, US, 12 May 1998 (1998-05-12), pages 385 - 388, XP010279167, ISBN: 0-7803-4428-6 *
MAHMOUDI D: "Speech source localization using a multi-resolution technique", INTERACTIVE VOICE TECHNOLOGY FOR TELECOMMUNICATIONS APPLICATIONS, 1998. IVTTA '98. PROCEEDINGS. 1998 IEEE 4TH WORKSHOP TORINO, ITALY 29-30 SEPT. 1998, NEW YORK, NY, USA,IEEE, US, 29 September 1998 (1998-09-29), pages 161 - 165, XP010312447, ISBN: 0-7803-5028-6 *

Also Published As

Publication number Publication date
EP1410678A2 (en) 2004-04-21
WO2002078390A2 (en) 2002-10-03
AU2002241233A1 (en) 2002-10-08

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