WO2012159380A1 - Dispositif et procédé de réduction du bruit du vent pour un terminal mobile - Google Patents

Dispositif et procédé de réduction du bruit du vent pour un terminal mobile Download PDF

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Publication number
WO2012159380A1
WO2012159380A1 PCT/CN2011/078591 CN2011078591W WO2012159380A1 WO 2012159380 A1 WO2012159380 A1 WO 2012159380A1 CN 2011078591 W CN2011078591 W CN 2011078591W WO 2012159380 A1 WO2012159380 A1 WO 2012159380A1
Authority
WO
WIPO (PCT)
Prior art keywords
wind noise
noise signal
module
output
signal
Prior art date
Application number
PCT/CN2011/078591
Other languages
English (en)
Chinese (zh)
Inventor
孙浩
葛建平
张爱同
Original Assignee
中兴通讯股份有限公司
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 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2012159380A1 publication Critical patent/WO2012159380A1/fr

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
    • 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
    • G10K11/1781—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 characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions
    • G10K11/17821—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 characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions characterised by the analysis of the input signals only
    • G10K11/17823—Reference signals, e.g. ambient acoustic environment
    • 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
    • G10K11/17861—Methods, e.g. algorithms; Devices using additional means for damping sound, e.g. using sound absorbing panels
    • 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
    • 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
    • G10K11/17885—General system configurations additionally using a desired external signal, e.g. pass-through audio such as music or speech
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Speech or voice signal processing techniques 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
    • G10L21/0232—Processing in the frequency domain

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to an apparatus and method for reducing wind noise of a mobile terminal. Background technique
  • the existing ordinary mobile phone has a good call effect in a general use environment, especially in an indoor environment.
  • the wind noise is very obvious, so that not only does it listen to itself.
  • the voice signal transmitted by the other party is unclear, and the wind noise signal is transmitted to the other party's earpiece side through the microphone, so that the other party can't hear the voice signal of the other party, which causes a great obstacle to the communication between the two parties, which seriously affects the effect and quality of the call.
  • the present invention is directed to an apparatus and method for reducing wind noise of a mobile terminal, which solves the problem of poor communication effect brought to the mobile terminal by wind noise in the prior art.
  • the present invention provides a device for reducing wind noise on a mobile terminal, including: a wind noise signal acquisition module, a wind noise signal detection module, and a wind noise signal processing module, wherein
  • the wind noise signal acquisition module is configured to collect an external wind noise signal, and convert the same into an electric signal output to the wind noise signal detection module and the wind noise signal processing module;
  • the wind noise signal detecting module is configured to output a wind noise signal to the wind noise signal collecting module The detection is performed, and the wind noise signal processing module is triggered when it is determined that the wind noise reduction process is required; the wind noise signal processing module is configured to filter and amplify the wind noise signal output by the wind noise signal acquisition module. And the phase conversion process is output to the handset of the mobile terminal.
  • the wind noise signal detecting module is specifically configured to: filter the high frequency interference and amplify the wind noise signal output by the wind noise signal collecting module, and then determine whether the wind noise signal is greater than a predetermined wind noise signal threshold, if The wind noise processing module is triggered, otherwise no noise reduction processing is performed.
  • the wind noise signal processing module specifically includes: a filtering unit and a reverse amplifying unit, where
  • the filtering unit is configured to filter the wind noise signal output by the wind noise signal acquisition module to filter the low frequency interference and output the signal to the reverse amplification unit;
  • the inverse amplifying unit is configured to sequentially perform amplification, amplitude and phase processing on the wind noise signal output by the filtering unit, so that the amplitude of the output is the same as the amplitude of the wind noise signal on the human ear side, and the phase is opposite.
  • the method further includes: a passive wind noise module, the module includes: a single-point microphone, a microphone sleeve, wherein
  • the unidirectional microphone is disposed at a predetermined position of the mobile terminal housing, and the sound emitting hole is directed to the sound hole of the front shell of the mobile terminal;
  • the microphone sleeve is sleeved on the single-pointing microphone, and the opening thereof is physically offset from the sound hole of the single-pointing microphone.
  • the passive wind noise module further comprises: a hole-shaped wind noise material, one side is in close contact with the front end of the mobile terminal, and the other side is tightly pressed with the microphone rubber sleeve.
  • the present invention also provides a method for reducing wind noise on a mobile terminal, including:
  • Step A collecting the wind noise signal of the outside world and converting it into an electrical signal output
  • Step B The wind noise signal outputted in step A is detected, and when it is determined that the wind noise reduction process is required, it is filtered, amplified, and phase-converted and output to the handset of the mobile terminal. Further, the step B specifically includes
  • Step A Determining whether the high-frequency interference and the amplified wind noise signal are greater than a predetermined wind noise signal threshold, and if so, filtering the low-frequency interference on the wind noise signal outputted in step A, and sequentially performing amplification, amplitude, and phase processing, Make the amplitude of the output the same as the amplitude of the wind noise signal on the human ear side, and the phase is opposite; otherwise, no noise reduction processing is performed.
  • the voice quality of the earpiece side is improved, so that the voice of the other party can be clearly heard; on the other hand, the voice quality of the other party's earpiece side is improved, so that The other party can clearly hear their own voice, make the communication clearer and smoother, and greatly improve the user's call performance in outdoor, especially windy situations.
  • FIG. 1 is a schematic structural diagram of an apparatus according to an embodiment of the present invention.
  • FIG. 2 is a schematic structural diagram of a wind noise signal processing module according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of a passive wind noise reduction module according to an embodiment of the present invention.
  • FIG. 4 is a schematic flowchart diagram of a method according to an embodiment of the present invention. detailed description
  • FIG. 1 is a schematic structural diagram of an apparatus according to an embodiment of the present invention, which may specifically include: a wind noise signal acquisition module 11, a wind noise signal detection module 12, and a wind noise signal processing module.
  • the wind noise signal acquisition module 11 is configured to collect the wind noise signal of the outside world, and convert it into an electric signal output to the wind noise signal detecting module 12 and the wind noise signal processing module 13;
  • the wind noise signal detecting module 12 is configured to detect the wind noise signal output by the wind noise signal collecting module 11 and trigger the wind noise signal processing module 13 when determining that the wind noise reduction processing is required; specifically, the wind noise signal detecting The module 12 filters out the high-frequency interference and amplifies the wind noise signal outputted by the wind noise signal acquisition module 11, and then determines whether it is greater than a predetermined wind noise signal threshold. If yes, the wind noise signal processing module 13 is triggered, otherwise no noise reduction processing is performed. .
  • the wind noise signal processing module 13 is configured to filter, amplify, and phase convert the wind noise signal outputted by the wind noise signal acquisition module 11 to be output to the handset of the mobile terminal, so as to cancel the wind noise signal appearing on the handset side, thereby Achieve the effect of active noise reduction.
  • the wind noise signal processing module 13 mainly includes: a filtering unit 131 and an inverse amplifying unit 132;
  • the filtering unit 131 is configured to process the wind noise signal collected by the wind noise signal collecting module 11 to filter out the mixed low frequency signal (mainly a non-speech signal), so that the signal for reverse and amplification processing is cleaner;
  • the inverse amplifying unit 132 is configured to sequentially perform amplification, amplitude and phase processing on the filtered wind noise signal, so that the amplitude of the output is the same as the amplitude of the wind noise signal on the human ear side, and the phase is opposite, thereby the wind noise Offset, it has the effect of reducing wind noise.
  • the device in the embodiment of the present invention may further include: a passive wind noise reduction module;
  • a passive wind noise reduction module The schematic diagram of the structure of the wind noise module, as shown in FIG. 3, the passive wind noise module may specifically include: a single-point microphone 31, a microphone sleeve 32, and a hole-shaped wind noise material 33;
  • the unidirectional microphone 31 has an audible hole pointing to the sound hole on the front casing 34 of the mobile terminal; the microphone sleeve 32 is physically connected to the unidirectional microphone 31, and is sleeved on the unidirectional microphone 31, and the aperture and the unidirectional microphone 31 are provided.
  • the sound hole is physically staggered, and is tightly pressed against the hole-shaped wind noise material 33, and the noise signal inside the mobile terminal is blocked and transmitted to the microphone; meanwhile, the hole-shaped wind noise material 33 is in close contact with the front cover 34 of the mobile terminal. It can weaken the wind noise signal from the outside into the microphone, and thus suppress the other party's hearing of wind noise.
  • FIG. 4 is a schematic flowchart of a method according to an embodiment of the present invention. As shown in FIG. 4, the following steps may be specifically included:
  • Step 401 collecting an external wind noise signal and converting it into an electrical signal output
  • Step 402 The wind noise signal outputted in step 401 is detected, and when it is determined that the wind noise reduction process is required, it is filtered, amplified, and phase-converted, and then output to the mobile terminal for listening.
  • the step 402 specifically includes:
  • the embodiments of the present invention provide an apparatus and method for reducing wind noise of a mobile terminal.
  • the embodiment of the present invention increases active wind noise and passive wind noise. Processing, on the one hand, improve the voice quality of the handset side, so that you can clearly hear the other party's voice; on the other hand, improve the voice quality of the other party's handset side, so that the other party can clearly hear
  • the voice of the user makes the communication clearer and smoother, which greatly improves the user's call effect in the outdoor, especially in windy situations.

Landscapes

  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • General Health & Medical Sciences (AREA)
  • Computational Linguistics (AREA)
  • Quality & Reliability (AREA)
  • Human Computer Interaction (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Telephone Function (AREA)

Abstract

L'invention concerne un dispositif et un procédé de réduction du bruit du vent pour un terminal mobile. Le dispositif comprend : un module de collecte de signal de bruit de vent servant à collecter un signal de bruit de vent externe et à convertir celui-ci en un signal électrique à envoyer à un module de détection de signal de bruit de vent et à un module de traitement de signal de bruit de vent; le module de détection de signal de bruit de vent servant à détecter le signal de bruit de vent produit par le module de collecte de signal de bruit de vent et à activer le module de traitement de signal de bruit de vent lorsqu'il a été déterminé que le traitement de réduction de bruit de vent est nécessaire; et le module de traitement de signal de bruit de vent servant à filtrer le signal de bruit de vent produit en sortie par le module de collecte de signal de bruit de vent, et à réaliser un traitement d'amplification et de conversion de phase du signal avant sa production en sortie vers le récepteur du terminal mobile. La présente invention, d'une part améliore la qualité vocale du côté récepteur pour un individu et permet à l'individu d'entendre clairement la voix de l'autre interlocuteur, et d'autre part améliore la qualité vocale du côté récepteur pour l'autre interlocuteur et permet à l'autre interlocuteur d'entendre clairement la voix de l'individu, ce qui rend la communication plus claire et plus aisée, et améliore grandement les résultats de la communication pour l'utilisateur, en particulier s'il y a du vent à l'extérieur.
PCT/CN2011/078591 2011-05-20 2011-08-18 Dispositif et procédé de réduction du bruit du vent pour un terminal mobile WO2012159380A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201110132375.XA CN102209135B (zh) 2011-05-20 2011-05-20 用于对移动终端降风噪的装置及方法
CN201110132375.X 2011-05-20

Publications (1)

Publication Number Publication Date
WO2012159380A1 true WO2012159380A1 (fr) 2012-11-29

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PCT/CN2011/078591 WO2012159380A1 (fr) 2011-05-20 2011-08-18 Dispositif et procédé de réduction du bruit du vent pour un terminal mobile

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CN (1) CN102209135B (fr)
WO (1) WO2012159380A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9721581B2 (en) 2015-08-25 2017-08-01 Blackberry Limited Method and device for mitigating wind noise in a speech signal generated at a microphone of the device

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CN104092801A (zh) * 2014-05-22 2014-10-08 中兴通讯股份有限公司 智能终端通话降噪方法及智能终端
CN104539819A (zh) * 2014-12-26 2015-04-22 贵州万臻时代通讯技术有限公司 一种抑制移动通信终端风噪声的方法
CN108121527A (zh) * 2016-11-28 2018-06-05 天津三星电子有限公司 一种输出音频的方法和电子设备

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CN1802873A (zh) * 2003-06-06 2006-07-12 索尼爱立信移动通讯股份有限公司 麦克风的风噪声减小
CN1910653A (zh) * 2004-01-20 2007-02-07 皇家飞利浦电子股份有限公司 增强噪声环境下的电话使用
CN101197870A (zh) * 2006-12-05 2008-06-11 乐金电子(中国)研究开发中心有限公司 一种可调节通话质量的移动终端
CN101211558A (zh) * 2006-12-28 2008-07-02 海尔集团公司 有源降噪方法及有源降噪装置
US20090002498A1 (en) * 2007-04-13 2009-01-01 Sanyo Electric Co., Ltd. Wind Noise Reduction Apparatus, Audio Signal Recording Apparatus And Imaging Apparatus

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US8488803B2 (en) * 2007-05-25 2013-07-16 Aliphcom Wind suppression/replacement component for use with electronic systems

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Publication number Priority date Publication date Assignee Title
CN2588714Y (zh) * 2002-05-31 2003-11-26 黄大伟 一种消噪耳机
CN1802873A (zh) * 2003-06-06 2006-07-12 索尼爱立信移动通讯股份有限公司 麦克风的风噪声减小
CN1910653A (zh) * 2004-01-20 2007-02-07 皇家飞利浦电子股份有限公司 增强噪声环境下的电话使用
CN101197870A (zh) * 2006-12-05 2008-06-11 乐金电子(中国)研究开发中心有限公司 一种可调节通话质量的移动终端
CN101211558A (zh) * 2006-12-28 2008-07-02 海尔集团公司 有源降噪方法及有源降噪装置
US20090002498A1 (en) * 2007-04-13 2009-01-01 Sanyo Electric Co., Ltd. Wind Noise Reduction Apparatus, Audio Signal Recording Apparatus And Imaging Apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9721581B2 (en) 2015-08-25 2017-08-01 Blackberry Limited Method and device for mitigating wind noise in a speech signal generated at a microphone of the device

Also Published As

Publication number Publication date
CN102209135B (zh) 2016-09-07
CN102209135A (zh) 2011-10-05

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