WO2010013927A3 - Method and apparatus for refining sound - Google Patents

Method and apparatus for refining sound Download PDF

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Publication number
WO2010013927A3
WO2010013927A3 PCT/KR2009/004194 KR2009004194W WO2010013927A3 WO 2010013927 A3 WO2010013927 A3 WO 2010013927A3 KR 2009004194 W KR2009004194 W KR 2009004194W WO 2010013927 A3 WO2010013927 A3 WO 2010013927A3
Authority
WO
WIPO (PCT)
Prior art keywords
noise
sound
wave
refining
amplitude
Prior art date
Application number
PCT/KR2009/004194
Other languages
French (fr)
Korean (ko)
Other versions
WO2010013927A2 (en
Inventor
김길호
Original Assignee
(주)하모니칼라시스템
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 (주)하모니칼라시스템 filed Critical (주)하모니칼라시스템
Publication of WO2010013927A2 publication Critical patent/WO2010013927A2/en
Publication of WO2010013927A3 publication Critical patent/WO2010013927A3/en

Links

Classifications

    • 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
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1785—Methods, e.g. algorithms; Devices
    • G10K11/17857—Geometric disposition, e.g. placement of microphones
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1787—General system configurations
    • G10K11/17873—General system configurations using a reference signal without an error signal, e.g. pure feedforward
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L15/00—Speech recognition
    • G10L15/20—Speech recognition techniques specially adapted for robustness in adverse environments, e.g. in noise, of stress induced speech
    • 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
    • G10L21/0316—Speech enhancement, e.g. noise reduction or echo cancellation by changing the amplitude
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/10—Applications
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/10—Applications
    • G10K2210/105—Appliances, e.g. washing machines or dishwashers
    • G10K2210/1053—Hi-fi, i.e. anything involving music, radios or loudspeakers

Abstract

The present invention relates to a method and an apparatus for refining sound, especially to a sound refining method and apparatus which remove noise around a listener and provide an interfering sound at the same time, thereby efficiently reducing the noise that a listener is aware of. The sound refining method of the present invention comprises the steps of: receiving noise; generating an offset wave with the same intensity as, and an opposite phase to, the noise using an active noise cancelling unit; calculating the amplitude of the residual wave which is a composite wave of the noise and the offset wave; and generating an interfering sound of the amplitude to substantially remove the amplitude of the residual wave. The noise, offset wave, residual wave, and interfering sound substantially and simultaneously exist.
PCT/KR2009/004194 2008-07-28 2009-07-28 Method and apparatus for refining sound WO2010013927A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020080073566A KR20100012075A (en) 2008-07-28 2008-07-28 Sound cleaning method and apparatus
KR10-2008-0073566 2008-07-28

Publications (2)

Publication Number Publication Date
WO2010013927A2 WO2010013927A2 (en) 2010-02-04
WO2010013927A3 true WO2010013927A3 (en) 2010-06-10

Family

ID=41610836

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2009/004194 WO2010013927A2 (en) 2008-07-28 2009-07-28 Method and apparatus for refining sound

Country Status (2)

Country Link
KR (1) KR20100012075A (en)
WO (1) WO2010013927A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101015318B1 (en) * 2010-05-19 2011-02-15 서용선 A anti-noise device for reducing the dental equipments' noise
KR102170684B1 (en) * 2019-01-21 2020-10-27 (주)한컴인터프리 System for interpreting and translating using smart clothes

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR940007532B1 (en) * 1991-12-30 1994-08-19 주식회사 금성사 Device and method for noise sound insulation
US5377275A (en) * 1992-07-29 1994-12-27 Kabushiki Kaisha Toshiba Active noise control apparatus
KR19980036335A (en) * 1996-11-18 1998-08-05 김영귀 Reference signal generation method for active noise control
KR100242087B1 (en) * 1997-11-10 2000-02-01 정몽규 Method and apparatus for controlling active noise and vibration using ltj filter

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR940007532B1 (en) * 1991-12-30 1994-08-19 주식회사 금성사 Device and method for noise sound insulation
US5377275A (en) * 1992-07-29 1994-12-27 Kabushiki Kaisha Toshiba Active noise control apparatus
KR19980036335A (en) * 1996-11-18 1998-08-05 김영귀 Reference signal generation method for active noise control
KR100242087B1 (en) * 1997-11-10 2000-02-01 정몽규 Method and apparatus for controlling active noise and vibration using ltj filter

Also Published As

Publication number Publication date
WO2010013927A2 (en) 2010-02-04
KR20100012075A (en) 2010-02-05

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