WO2007120734A3 - Environmental noise reduction and cancellation for cellular telephone and voice over internet packets (voip) communication devices - Google Patents

Environmental noise reduction and cancellation for cellular telephone and voice over internet packets (voip) communication devices Download PDF

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Publication number
WO2007120734A3
WO2007120734A3 PCT/US2007/008983 US2007008983W WO2007120734A3 WO 2007120734 A3 WO2007120734 A3 WO 2007120734A3 US 2007008983 W US2007008983 W US 2007008983W WO 2007120734 A3 WO2007120734 A3 WO 2007120734A3
Authority
WO
WIPO (PCT)
Prior art keywords
environmental noise
microphone
voice over
over internet
counterbalanced
Prior art date
Application number
PCT/US2007/008983
Other languages
French (fr)
Other versions
WO2007120734A2 (en
Inventor
Alon Konchitsky
Original Assignee
Noise Free Wireless Inc
Alon Konchitsky
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
Priority claimed from US11/402,459 external-priority patent/US20070263847A1/en
Priority claimed from US11/402,521 external-priority patent/US20070237339A1/en
Application filed by Noise Free Wireless Inc, Alon Konchitsky filed Critical Noise Free Wireless Inc
Publication of WO2007120734A2 publication Critical patent/WO2007120734A2/en
Publication of WO2007120734A3 publication Critical patent/WO2007120734A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
    • H04M1/6033—Substation equipment, e.g. for use by subscribers including speech amplifiers for providing handsfree use or a loudspeaker mode in telephone sets
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0208—Noise filtering
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0208—Noise filtering
    • G10L21/0216—Noise filtering characterised by the method used for estimating noise
    • G10L2021/02161—Number of inputs available containing the signal or the noise to be suppressed
    • G10L2021/02165—Two microphones, one receiving mainly the noise signal and the other one mainly the speech signal
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0208—Noise filtering
    • G10L21/0216—Noise filtering characterised by the method used for estimating noise

Abstract

A system and method for reducing or entirely canceling background or environmental noise from a voice transmission from a communications device. A communications device(30), such as a cellular or a voice over internet or voice over packets mobile or wire lined telephone or cordless telephone, is configured with an environmental noise counterbalanced (correction) signal generator that is connected between a microphone(11) and a continuous time quadrant multiplier(22) or a discrete time processor(28). The original output of the microphone and a counterbalanced (correction) signal generated by the environmental noise counterbalanced (correction) signal generator(20) are mixed or combined together prior to being passed to a transmitter. In one embodiment a discrete time unit with or without signal processing is provided between the microphone (11) and the continuous time quadrant multiplier(22) or the discrete time processor(28) to help synchronize the timing of the signals to be mixed. In another embodiment a second microphone is employed to detect environmental noise.
PCT/US2007/008983 2006-04-11 2007-04-11 Environmental noise reduction and cancellation for cellular telephone and voice over internet packets (voip) communication devices WO2007120734A2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US11/402,459 US20070263847A1 (en) 2006-04-11 2006-04-11 Environmental noise reduction and cancellation for a cellular telephone communication device
US11/402,459 2006-04-11
US11/402,521 US20070237339A1 (en) 2006-04-11 2006-04-11 Environmental noise reduction and cancellation for a voice over internet packets (VOIP) communication device
US11/402,521 2006-04-11

Publications (2)

Publication Number Publication Date
WO2007120734A2 WO2007120734A2 (en) 2007-10-25
WO2007120734A3 true WO2007120734A3 (en) 2008-11-13

Family

ID=38610160

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/008983 WO2007120734A2 (en) 2006-04-11 2007-04-11 Environmental noise reduction and cancellation for cellular telephone and voice over internet packets (voip) communication devices

Country Status (1)

Country Link
WO (1) WO2007120734A2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101827146A (en) * 2009-12-29 2010-09-08 中兴通讯股份有限公司 Device with terminal communication noise suppression function, method and communication terminal
EP2362680A1 (en) * 2010-02-23 2011-08-31 Vodafone Holding GmbH Electronic device for receiving and transmitting audio signals
US20150365762A1 (en) * 2012-11-24 2015-12-17 Polycom, Inc. Acoustic perimeter for reducing noise transmitted by a communication device in an open-plan environment
CN103903627B (en) * 2012-12-27 2018-06-19 中兴通讯股份有限公司 The transmission method and device of a kind of voice data
CN108574892B (en) * 2018-06-29 2024-04-02 歌尔科技有限公司 Sound pick-up, sound pick-up equipment and noise eliminating method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5107149A (en) * 1990-12-18 1992-04-21 Synaptics, Inc. Linear, continuous-time, two quadrant multiplier
US6978010B1 (en) * 2002-03-21 2005-12-20 Bellsouth Intellectual Property Corp. Ambient noise cancellation for voice communication device
US7058368B2 (en) * 2002-06-27 2006-06-06 Nortel Networks Limited Adaptive feedforward noise cancellation circuit
US7164732B2 (en) * 2002-12-09 2007-01-16 Broadcom Corporation Edge incremental redundancy support in a cellular wireless terminal

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5107149A (en) * 1990-12-18 1992-04-21 Synaptics, Inc. Linear, continuous-time, two quadrant multiplier
US6978010B1 (en) * 2002-03-21 2005-12-20 Bellsouth Intellectual Property Corp. Ambient noise cancellation for voice communication device
US7058368B2 (en) * 2002-06-27 2006-06-06 Nortel Networks Limited Adaptive feedforward noise cancellation circuit
US7164732B2 (en) * 2002-12-09 2007-01-16 Broadcom Corporation Edge incremental redundancy support in a cellular wireless terminal

Also Published As

Publication number Publication date
WO2007120734A2 (en) 2007-10-25

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