CN105453587B - 窄频带噪声检测与消除的***及方法 - Google Patents

窄频带噪声检测与消除的***及方法 Download PDF

Info

Publication number
CN105453587B
CN105453587B CN201480044764.9A CN201480044764A CN105453587B CN 105453587 B CN105453587 B CN 105453587B CN 201480044764 A CN201480044764 A CN 201480044764A CN 105453587 B CN105453587 B CN 105453587B
Authority
CN
China
Prior art keywords
band
narrow
ratio
frequency band
whole frequency
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.)
Active
Application number
CN201480044764.9A
Other languages
English (en)
Other versions
CN105453587A (zh
Inventor
周大勇
路阳
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.)
Cirrus Logic Inc
Original Assignee
Cirrus Logic Inc
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 Cirrus Logic Inc filed Critical Cirrus Logic Inc
Publication of CN105453587A publication Critical patent/CN105453587A/zh
Application granted granted Critical
Publication of CN105453587B publication Critical patent/CN105453587B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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
    • G10K11/1783—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 handling or detecting of non-standard events or conditions, e.g. changing operating modes under specific operating conditions
    • G10K11/17833—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 handling or detecting of non-standard events or conditions, e.g. changing operating modes under specific operating conditions by using a self-diagnostic function or a malfunction prevention function, e.g. detecting abnormal output levels
    • G10K11/17835—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 handling or detecting of non-standard events or conditions, e.g. changing operating modes under specific operating conditions by using a self-diagnostic function or a malfunction prevention function, e.g. detecting abnormal output levels using detection of abnormal input signals
    • 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
    • G10K11/17853—Methods, e.g. algorithms; Devices of the filter
    • G10K11/17854—Methods, e.g. algorithms; Devices of the filter the filter being an adaptive filter
    • 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
    • G10K11/17879—General system configurations using both a reference signal and an error signal
    • G10K11/17881—General system configurations using both a reference signal and an error signal the reference signal being an acoustic signal, e.g. recorded with a microphone
    • 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
    • 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
    • G10K2210/108—Communication systems, e.g. where useful sound is kept and noise is cancelled
    • 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
    • G10K2210/50—Miscellaneous
    • G10K2210/503—Diagnostics; Stability; Alarms; Failsafe
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2460/00—Details of hearing devices, i.e. of ear- or headphones covered by H04R1/10 or H04R5/033 but not provided for in any of their subgroups, or of hearing aids covered by H04R25/00 but not provided for in any of its subgroups
    • H04R2460/01—Hearing devices using active noise cancellation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Signal Processing (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Telephone Function (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

本发明公开了一种集成电路，实现个人音频设备的至少一部分，所述集成电路包括：输出，包括抗噪信号；参考麦克风输入；误差麦克风输入和处理电路。所述处理电路实现具有响应的自适应滤波器，所述自适应滤波器从参考麦克风信号生成抗噪信号以减少收听者听到的周围音频声音的存在，其中所述处理电路实现系数控制方块，所述系数控制方块通过根据所计算的窄频带与全频带之比来调适所述自适应滤波器的响应，将所述自适应滤波器的响应整形成与误差麦克风信号和参考麦克风信号一致，其中所述窄频带与全频带之比是参考麦克风信号的窄频带功率除以参考麦克风信号的全频带功率的函数。

Description

窄频带噪声检测与消除的***及方法
技术领域
本发明大体上涉及与声换能器有关的自适应消噪，更特定地，涉及存在于声换能器附近的周围窄频带噪声的检测与消除。
背景技术
无线电话(诸如移动电话/蜂窝式电话、无绳电话)及其他消费音频设备(诸如mp3播放器)被广泛应用。使用麦克风来测量周围声事件，然后使用信号处理将抗噪信号注入设备输出中以消除周围声事件，通过提供消噪，此类设备的性能就清晰度而论，可得到改良。
因为根据所存在的噪声源及设备自身的位置，在个人音频设备(诸如无线电话)周围的声环境可发生很大变化，所以期望调适消噪以考虑此类环境变化。然而，自适应消噪电路可能很复杂，消耗额外功率，以及在某种情况下可能产生不良结果。例如，在车辆行驶时，当使用包括自适应消噪电路的个人音频设备时，此类设备的一些用户报告不适，此类不适包括眩晕、丧失方向感和压迫感。
发明内容
根据本发明的教示，与周围窄频带噪声的检测与减少相关联的缺点和问题可减少或消除，所述周围窄频带噪声与声换能器相关联。
根据本发明的实施例，一种个人音频设备可包括个人音频设备壳体、换能器、参考麦克风、误差麦克风和处理电路。换能器可安装于壳体上，用于再现音频信号，所述音频信号既包括回放给收听者的源音频又包括抗噪信号，所述抗噪信号用于应对在换能器的声输出中的周围音频声音的影响。参考麦克风可安装于壳体上，用于提供表示周围音频声音的参考麦克风信号。误差麦克风可安装于壳体上，靠近换能器，用于提供表示换能器的声输出及在换能器处的周围音频声音的误差麦克风信号。处理电路可实现具有响应的自适应滤波器，所述自适应滤波器由参考麦克风信号生成抗噪信号以减少收听者听到的周围音频声音的存在，其中处理电路可实现系数控制方块，所述系数控制方块通过根据所计算的窄频带与全频带之比来调适自适应滤波器的响应，将自适应滤波器的响应整形成与误差麦克风信号和参考麦克风信号一致，其中窄频带与全频带之比是参考麦克风信号的窄频带功率除以参考麦克风信号的全频带功率的函数。
根据本发明的这些和其他实施例，一种方法，用于消除在个人音频设备的换能器附近的周围音频声音，可包括利用参考麦克风来测量周围音频声音以产生参考麦克风信号。所述方法还可包括利用误差麦克风来测量换能器的输出及在换能器处的周围音频声音。所述方法还可包括通过根据所计算的窄频带与全频带之比来调适自适应滤波器的响应，由参考麦克风测量和误差麦克风测量的结果自适应生成抗噪信号，用于应对在换能器的声输出处的周围音频声音的影响，所述自适应滤波器对参考麦克风的输出进行滤波，其中所述窄频带与全频带之比是参考麦克风信号的窄频带功率除以参考麦克风信号的全频带功率的函数。所述方法还可包括将抗噪信号与源音频信号进行组合以生成提供给换能器的音频信号。
根据本发明的这些和其他实施例，一种集成电路，用于实现个人音频设备的至少一部分，可包括输出、参考麦克风输入、误差麦克风输入和处理电路。输出可用于提供信号给换能器，所述信号既包括回放给收听者的源音频又包括抗噪信号，所述抗噪信号用于应对在换能器的声输出中的周围音频声音的影响。参考麦克风输入可用于接收表示周围音频声音的参考麦克风信号。误差麦克风输入可用于接收表示换能器的输出及在换能器处的周围音频声音的误差麦克风信号。处理电路可实现具有响应的自适应滤波器，所述自适应滤波器由参考麦克风信号生成抗噪信号以减少收听者听到的周围音频声音的存在，其中处理电路可实现系数控制方块，所述系数控制方块通过根据所计算的窄频带与全频带之比来调适自适应滤波器的响应，将自适应滤波器的响应整形成与误差麦克风信号和参考麦克风信号一致，其中所述窄频带与全频带之比是参考麦克风信号的窄频带功率除以参考麦克风信号的全频带功率的函数。
本发明的技术优势对于本领域普通技术人员而言从本文中所包括的图式、说明书和权利要求可以显而易见。所述实施例的目的和优点将至少通过在权利要求中特别指出的元件、功能及组合来实现和完成。
应当理解，前述大致说明和以下详细说明都为举例说明，且不限制本发明中所提出的权利要求。
附图说明
通过结合附图参考以下说明，可更完整地理解本发明实施例及其优点，其中相同附图标记表示相同功能，以及其中：
图1示出了根据本发明的实施例的无线移动电话；
图2为根据本发明的实施例，在图1所示的无线电话内的选定电路的方块图；以及
图3为方块图，示出了根据本发明的实施例在图2编码解码器(CODEC)集成电路的自适应消噪(ANC)电路内的选定信号处理电路和功能方块。
具体实施方式
本发明包括可在个人音频设备中实现的消噪技术及电路，诸如无线电话。个人音频设备包括ANC电路，所述ANC电路可测量周围声环境并生成信号，所述信号被注入喇叭(或其他换能器)输出中以消除周围声事件。参考麦克风可被设置为测量周围声环境，且个人音频设备可包括误差麦克风，用于控制抗噪信号的调适以消除周围音频声音以及用于校正自处理电路的输出通过换能器的电声路径。
现在参考图1，如根据本发明的实施例所示的无线电话10被示出为靠近人耳5。无线电话10为可采用根据本发明的实施例的技术的设备实例，但应当理解，在所示无线电话10中或在后续插图中所示的电路中呈现的元件或构成并非全部需要，以便实施在权利要求中陈述的本发明。无线电话10可包括换能器，诸如喇叭SPKR，所述喇叭SPKR再现由无线电话10接收的远距离语音，连同其他本地音频事件，诸如铃声、所存储的音频节目资料、注入以提供平衡会话感觉的近端语音(即，无线电话10的用户的语音)，以及需要通过无线电话10再现的其他音频(诸如网页源或由无线电话10接收的其他网络通信)及音频指示(诸如电池电量低指示及其他***事件通知)。近距离语音麦克风NS可被设置为捕捉近端语音，所述近端语音自无线电话10发送至另一个(多个)会话参与者。
无线电话10可包括ANC电路和功能，所述ANC电路和功能将抗噪信号注入喇叭SPKR中，以改良远距离语音及由喇叭SPKR再现的其他音频的清晰度。参考麦克风R可被设置用于测量周围声环境，且可被定位成远离用户嘴巴的典型位置，使得近端语音可在由参考麦克风R再现的信号中被最小化。另一个麦克风，误差麦克风E，可被设置为当无线电话10紧靠耳朵5时，通过测量周围音频连同由接近耳朵5的喇叭SPKR再现的音频，进一步改良ANC操作。在无线电话10内的电路14可包括：音频CODEC集成电路(IC)20，所述音频CODEC集成电路20接收来自参考麦克风R、近距离语音麦克风NS和误差麦克风E的信号；及与其他集成电路的接口，诸如具有无线电话收发器的射频(RF)集成电路12。在本发明的一些实施例中，本文中所公开的电路和技术可并入单个集成电路中，所述单个集成电路包括控制电路及用于实现整个个人音频设备的其他功能，诸如MP3播放器单芯片集成电路。
通常，本发明的ANC技术测量撞击在参考麦克风R上的周围声事件(相对于喇叭SPKR的输出和/或近端语音)，且通过还测量撞击在误差麦克风E上的相同周围声事件，无线电话10的ANC处理电路调适从参考麦克风R的输出生成的抗噪信号以具有使在误差麦克风E处的周围声事件的振幅最小化的特性。因为声路径P(z)自参考麦克风R延伸至误差麦克风E，所以ANC电路在消除电声路径S(z)的影响的同时有效地估计声路径P(z)，所述电声路径S(z)表示CODEC集成电路20的音频输出电路的响应及喇叭SPKR的声/电传递函数，包括在特定声环境下在喇叭SPKR与误差麦克风E之间的耦合，当无线电话10未紧贴着耳朵5时，所述耦合可能受到耳朵5的靠近及结构以及可靠近无线电话10的其他物理对象和人头结构影响。虽然所示无线电话10包括具有第三近距离语音麦克风NS的双麦克风ANC***，但是本发明的一些方面可在未包括单独误差麦克风和参考麦克风的***中或在使用近距离语音麦克风NS来执行参考麦克风R的功能的无线电话中实施。此外，在仅为音频回放而设计的个人音频设备中，通常不会包括近距离语音麦克风NS，且在不更改本发明范围的情况下，在下文更详细说明的电路中的近距离语音信号路径可以省略，绝不是使为输入而设的选项限于麦克风覆盖范围检测方案。
现在参考图2，在无线电话10内的选定电路如方块图所示。CODEC集成电路20可包括：模拟-数字转换器(ADC)21A，用于接收参考麦克风信号并生成参考麦克风信号的数字表示ref；ADC 21B，用于接收误差麦克风信号并生成误差麦克风信号的数字表示err；和ADC21C，用于接收近距离语音麦克风信号并生成近距离语音麦克风信号的数字表示ns。CODEC集成电路20可从放大器A1生成输出，用于驱动喇叭SPKR，所述放大器A1可对数字-模拟转换器(DAC)23的输出进行放大，所述数字-模拟转换器(DAC)23接收组合器26的输出。组合器26可将来自内部音频源24的音频信号ia、由ANC电路30生成的抗噪信号(按照常规，所述抗噪信号具有与在参考麦克风信号ref中的噪声相同的极性且因此通过组合器26被减去)以及近距离语音麦克风信号ns的一部分进行组合，使得无线电话10的用户可听到他或她自己与下行链路语音ds相关的声音，所述下行链路语音ds可从射频(RF)集成电路22接收，且还可通过组合器26进行组合。近距离语音麦克风信号ns还可被提供给RF集成电路22并可作为上行链路语音经由天线ANT发送至服务提供商。
现在参考图3，根据本发明的实施例，示出了ANC电路30的细节。自适应滤波器32可接收参考麦克风信号ref，且在理想情况下，可调适其传递函数W(z)为P(z)/S(z)以生成抗噪信号，所述抗噪信号可被提供给输出组合器，所述输出组合器将抗噪信号与将由换能器(以图2组合器26举例说明)再现的音频进行组合。自适应滤波器32的系数可由W系数控制方块31控制，所述W系数控制方块31使用信号的相关性来判定自适应滤波器32的响应，所述自适应滤波器32就最小均方意义来说通常使存在误差麦克风信号err中的参考麦克风信号ref的这些分量之间的误差最小化。通过W系数控制方块31比较的信号可为参考麦克风信号ref以及另一个信号，所述参考麦克风信号ref通过由滤波器34B提供的路径S(z)的响应的估计的副本进行整形，所述另一个信号包括误差麦克风信号err。通过利用路径S(z)的响应的估计的副本SECOPY(z)来变换参考麦克风信号ref，并使所得信号与误差麦克风信号err之间的差最小化，自适应滤波器32可适应P(z)/S(z)的期望响应。此外，如下文更详细说明具有响应Cx(z)的滤波器37A可处理滤波器34B的输出并将第一输入提供给W系数控制方块31。给W系数控制方块31的第二输入可由具有响应Ce(z)的另一个滤波器37B进行处理。响应Ce(z)可具有与滤波器37A的响应Cx(z)相适应的相位响应。滤波器37A和37B都可包括高通响应，使得防止DC偏移和非常低的频率变动影响W(z)的系数。除了误差麦克风信号err，通过W系数控制方块31与滤波器34B的输出进行比较的信号可包括已经通过滤波器响应SE(z)进行处理的大量反相下行链路音频信号ds和/或内部音频信号ia，响应SECOPY(z)为响应SE(z)的副本。通过注入大量反相下行链路音频信号ds和/或内部音频信号ia，可防止自适应滤波器32适应存在误差麦克风信号err中的大量下行链路音频和/或内部音频信号，并通过利用路径S(z)的响应估计来变换下行链路音频信号ds和/或内部音频信号ia的反相副本，在比较之前从误差麦克风信号err中去除的下行链路音频和/或内部音频应当与在误差麦克风信号err处再现的下行链路音频信号ds和/或内部音频信号ia的预期形式相适应，因为电声路径S(z)为下行链路音频信号ds和/或内部音频信号ia到达误差麦克风E所选取的路径。滤波器34B本身可能不是自适应滤波器，但可具有可调节响应，所述可调节响应被调谐为与自适应滤波器34A的响应相适应，使得滤波器34B的响应跟踪自适应滤波器34A的调适。
为了实现以上所述，自适应滤波器34A可具有由SE系数控制方块33控制的系数，所述SE系数控制方块33可比较下行链路音频信号ds和/或内部音频信号ia与在去除上述经滤波的下行链路音频信号ds和/或内部音频信号ia之后的误差麦克风信号err，所述下行链路音频信号ds和/或内部音频信号ia已经通过自适应滤波器34A进行滤波，以表示传送给误差麦克风E的预期下行链路音频，且所述下行链路音频信号ds和/或内部音频信号ia通过组合器36从自适应滤波器34A的输出中去除。SE系数控制方块33可使实际下行链路语音信号ds和/或内部音频信号ia与存在误差麦克风信号err中的下行链路音频信号ds和/或内部音频信号ia的分量相关。自适应滤波器34A可由此从下行链路音频信号ds和/或内部音频信号ia自适应生成信号，当从误差麦克风信号err中减去时，所述信号包括误差麦克风信号err中未归因于下行链路音频信号ds和/或内部音频信号ia的含量。
ANC电路30的窄频带控制方块42可被构成为检测与消除窄频带噪声，诸如在驾驶车辆或车辆行驶时，当无线电话10或另一个个人音频设备的用户正在收听由音频换能器生成的声音时，可能由于轮胎与路面之间声音振动而存在的噪声。为了执行此类功能，窄频带控制方块42可计算窄频带与全频带之比，其中窄频带与全频带之比是在特定频率范围内出现的参考麦克风信号的窄频带功率除以参考麦克风信号的全频带功率的函数。所述特定频率范围可为适合期望检测和消除在所述特定频率范围内出现的噪声的任何所关注频带。例如，在一些实施例中，所述特定频率范围可为在大约50Hz与大约380Hz之间，对应于可能由于车辆行驶而存在的噪声。窄频带与全频带之比越高，ANC电路30的自适应***可能越不稳定，从而导致ANC电路的不良操作。因此，基于窄频带与全频带之比的值，窄频带控制方块42可生成控制信号(图3未示出)，用于控制ANC电路30的一个或一个以上其他方块。例如，当窄频带与全频带之比增加时，窄频带控制方块42可降低滤波器32和34A的各种系数的步长，反之亦然。又如，当窄频带与全频带之比增加时，通过根据期望增益来适当缩放系数，窄频带控制方块42可降低滤波器32和34A中一个或一个以上滤波器的增益，反之亦然。为了改变滤波器32和34A中一个或一个以上滤波器的增益，可使用与2011年12月21日提交且题目为“在具有自适应消噪(ANC)的个人音频设备中的带限抗噪”的美国专利申请序列号13/333,484中公开的方法相似或相同的方法，其以引用方式并入本文中。
以其最简单形式，窄频带与全频带之比可按窄频带功率除以全频带功率进行计算。然而，各种方法可被用来在一段时间内对窄频带与全频带之比进行平滑化或通过限制或消除扰动或离群值的影响来增加其鲁棒性(robustness)，不然所述扰动或离群值的影响不期望地有助于所述窄频带与全频带比的计算。例如，为了在一段时间内对窄频带与全频带之比进行平滑化，窄频带与全频带之比可按以下进行计算：
NFRn＝αNFRn-1+(1-α)(当前窄频带功率/当前全频带功率)
其中NFRn为在给定离散时间间隔n处的窄频带与全频带之比的值，NFRn-1为在先前离散时间间隔n-1处的窄频带与全频带之比的值，以及α为平滑因子，所述平滑因子α判定在先前离散时间间隔n-1处的窄频带与全频带之比计算中的相对权重，使得当α增加时，窄频带与全频带之比的响应更加平滑，反之亦然。因此，窄频带与全频带之比可按窄频带与全频带之比的先前值的混合均值加等于参考麦克风信号的当前窄频带功率除以参考麦克风信号的当前全频带功率的量进行计算。
又如，与上文给出的计算相比，为了改良窄频带控制方块的鲁棒性，窄频带与全频带之比可按以下进行计算：
NFRn＝αNFRn-1+(1-α)(当前窄频带功率/经调适的当前全频带功率)
其中经调适的当前全频带功率等于参考麦克风信号的当前全频带功率减去存在窄频带功率的特定频率范围以外的信号离群值。此类信号离群值可以任何合适方式进行定义和/或识别。例如，信号离群值可包括在窄频带频率范围以外出现的全频带功率谱的特定频率处的信号，其中在此频率处的振幅比在相邻频率处的振幅明显大(例如，2倍，10倍等)。因此，窄频带与全频带之比按窄频带与全频带之比的先前值的混合均值加等于参考麦克风信号的当前窄频带功率除以等于参考麦克风信号的当前全频带功率减去存在窄频带功率的频率范围以外的参考麦克风信号离群值的当前功率的量的量进行计算。
又如，与上文给出的计算相比，为了改良窄频带控制方块的鲁棒性，窄频带与全频带之比可按以下进行计算：
NFRn＝αNFRn-1+(1-α)(当前窄频带功率/经调适的当前全频带功率)
当在离散时间间隔n期间未检测到信号扰动时，以及：
NFRn＝NFRn-1
当在离散时间间隔n期间检测到信号扰动时。如本文中使用，术语“信号扰动”可包括撞击在参考麦克风上可能预期对窄频带噪声的检测产生错误影响的任何声音，且可包括***语音或靠近参考麦克风而出现的其他声音、周围风的存在、物体与参考麦克风的物理接触、瞬时音调和/或任何其他类似声音。所述扰动可通过参考麦克风、另一个麦克风和/或与个人音频设备相关联的任何其他传感器进行检测。
本领域普通技术人员应当明白，本发明包括对于本文中示范性实施例的所有更改、替换、变动、变形和修改。同样地，本领域普通技术人员应当明白，在适当的情况下，所附权利要求包括对于本文中示范性实施例的所有更改、替换、变动、变形和修改。此外，在所附权利要求中对于装置或***或装置或***的组件的引用包括所述装置、***或组件，所述装置、***或组件适应执行特定功能，被安排为执行特定功能，可执行特定功能，被构成为执行特定功能，能够执行特定功能，可操作为执行特定功能或操作为执行特定功能，无论它或所述特定功能是否启动、打开或开启，只要所述装置、***或组件适应执行特定功能，被安排为执行特定功能，可执行特定功能，被构成为执行特定功能，能够执行特定功能，可操作为执行特定功能或操作为执行特定功能。
本文中陈述的所有实例和条件性语言旨在教学目的，以帮助读者理解本发明及发明者深化技术所提供的概念，且被解释为并不限于此类具体陈述的实例和条件。虽然已经详细说明本发明的实施例，但是应当理解，在不脱离本发明的精神和范围的情况下，可对本发明的实施例进行各种更改、替换和变形。

Claims (24)

1.一种个人音频设备，包括：
个人音频设备壳体；
换能器，安装于所述壳体上，用于再现音频信号，所述音频信号既包括回放给收听者的源音频又包括抗噪信号，所述抗噪信号用于应对在所述换能器的声输出中的周围音频声音的影响；
参考麦克风，安装于所述壳体上，用于提供表示所述周围音频声音的参考麦克风信号；
误差麦克风，安装于所述壳体上，靠近所述换能器，用于提供表示所述换能器的所述声输出及在所述换能器处的所述周围音频声音的误差麦克风信号；和
处理电路，所述处理电路实现具有响应的自适应滤波器，所述自适应滤波器从参考麦克风信号生成抗噪信号以减少收听者听到的周围音频声音的存在，其中所述处理电路实现系数控制方块，所述系数控制方块通过调适所述自适应滤波器的响应以减少在所述误差麦克风信号中的所述周围音频声音，并通过根据所计算的窄频带与全频带之比来进一步调适所述自适应滤波器的响应，将所述自适应滤波器的响应整形成与所述误差麦克风信号和所述参考麦克风信号一致，其中所述窄频带与全频带之比是所述参考麦克风信号的窄频带功率除以所述参考麦克风信号的全频带功率的函数。
2.根据权利要求1所述的个人音频设备，其中所述窄频带与全频带之比按所述窄频带与全频带之比的先前值以及由所述参考麦克风信号的当前窄频带功率除以所述参考麦克风信号的当前全频带功率得到的比值进行混合均值计算得到。
3.根据权利要求1所述的个人音频设备，其中所述窄频带与全频带之比按所述窄频带与全频带之比的先前值以及由所述参考麦克风信号的当前窄频带功率除以等于所述参考麦克风信号的当前全频带功率减去存在于所述窄频带功率的频率范围以外的参考麦克风信号离群值的当前功率的量得到的比值进行混合均值计算得到。
4.根据权利要求1所述的个人音频设备，其中：
响应于判定在所述参考麦克风信号上未检测到扰动，所述窄频带与全频带之比按所述窄频带与全频带之比的先前值以及由所述参考麦克风信号的当前窄频带功率除以所述参考麦克风信号的当前全频带功率得到的比值进行混合均值计算得到；以及
响应于判定在参考麦克风信号上检测到扰动，所述窄频带与全频带之比按等于所述参考麦克风信号的窄频带与全频带之比的先前值进行计算得到。
5.根据权利要求1所述的个人音频设备，其中所述窄频带功率包括频率在50Hz与380Hz之间的所述参考麦克风信号的功率。
6.根据权利要求1所述的个人音频设备，其中所述处理电路基于所计算的窄频带与全频带之比，通过控制所述系数控制方块的至少一个系数的步长，根据所计算的窄频带与全频带之比来调适所述自适应滤波器的响应。
7.根据权利要求1所述的个人音频设备，其中所述处理电路基于所计算的窄频带与全频带之比，通过控制所述自适应滤波器的自适应噪声控制增益，根据所计算的窄频带与全频带之比来调适所述自适应滤波器的响应。
8.根据权利要求1所述的个人音频设备，其中所述参考麦克风信号的所述窄频带功率主要归因于由车辆行驶引起的周围噪声。
9.一种用于消除在个人音频设备的换能器附近的周围音频声音方法，所述方法包括以下步骤：
利用参考麦克风来测量周围音频声音以产生参考麦克风信号；
利用误差麦克风来测量换能器的输出及在所述换能器处的所述周围音频声音以产生误差麦克风信号；
通过调适自适应滤波器的响应，从参考麦克风测量和误差麦克风测量的结果自适应生成抗噪信号，用于应对在所述换能器的声输出处的周围音频声音的影响，所述自适应滤波器对所述参考麦克风的输出进行滤波以减少在所述误差麦克风信号中的所述音频声音，并根据所计算的窄频带与全频带之比对所述参考麦克风的输出进行进一步滤波，其中所述窄频带与全频带之比是所述参考麦克风信号的窄频带功率除以所述参考麦克风信号的全频带功率的函数；以及
将所述抗噪信号与源音频信号进行组合以生成提供给所述换能器的音频信号。
10.根据权利要求9所述的方法，其中所述窄频带与全频带之比按所述窄频带与全频带之比的先前值以及由所述参考麦克风信号的当前窄频带功率除以所述参考麦克风信号的当前全频带功率得到的比值进行混合均值计算得到。
11.根据权利要求9所述的方法，其中所述窄频带与全频带之比按所述窄频带与全频带之比的先前值以及由所述参考麦克风信号的当前窄频带功率除以等于所述参考麦克风信号的当前全频带功率减去存在于所述窄频带功率的频率范围以外的参考麦克风信号离群值的当前功率的量得到的比值进行混合均值计算得到。
12.根据权利要求9所述的方法，其中：
响应于判定在所述参考麦克风信号上未检测到扰动，所述窄频带与全频带之比按所述窄频带与全频带之比的先前值以及由所述参考麦克风信号的当前窄频带功率除以所述参考麦克风信号的当前全频带功率得到的比值进行混合均值计算得到；以及
响应于判定在参考麦克风信号上检测到扰动，所述窄频带与全频带之比按等于所述参考麦克风信号的窄频带与全频带之比的先前值进行计算得到。
13.根据权利要求9所述的方法，其中所述窄频带功率包括频率在50Hz与380Hz之间的所述参考麦克风信号的功率。
14.根据权利要求9所述的方法，其中根据所计算的窄频带与全频带之比来调适自适应滤波器的响应包括基于所计算的窄频带与全频带之比，控制系数控制方块的至少一个系数的步长。
15.根据权利要求9所述的方法，其中根据所计算的窄频带与全频带之比来调适自适应滤波器的响应包括基于所计算的窄频带与全频带之比，控制所述自适应滤波器的自适应噪声控制增益。
16.根据权利要求9所述的方法，其中所述参考麦克风信号的所述窄频带功率主要归因于由车辆行驶引起的周围噪声。
17.一种集成电路，用于实现个人音频设备的至少一部分，所述集成电路包括：
输出，用于提供信号给换能器，所述信号既包括回放给收听者的源音频又包括抗噪信号，所述抗噪信号用于应对在所述换能器的声输出中的周围音频声音的影响；
参考麦克风输入，用于接收表示所述周围音频声音的参考麦克风信号；
误差麦克风输入，用于接收表示所述换能器的所述输出及在所述换能器处的所述周围音频声音的误差麦克风信号；和
处理电路，所述处理电路实现具有响应的自适应滤波器，所述自适应滤波器从参考麦克风信号生成抗噪信号以减少收听者听到的周围音频声音的存在，其中所述处理电路实现系数控制方块，所述系数控制方块通过调适所述自适应滤波器的响应以减少在所述误差麦克风信号中的所述周围音频声音，并根据所计算的窄频带与全频带之比来进一步调适所述自适应滤波器的响应，将所述自适应滤波器的响应整形成与所述误差麦克风信号和所述参考麦克风信号一致，其中所述窄频带与全频带之比是所述参考麦克风信号的窄频带功率除以所述参考麦克风信号的全频带功率的函数。
18.根据权利要求17所述的集成电路，其中所述窄频带与全频带之比按所述窄频带与全频带之比的先前值以及由所述参考麦克风信号的当前窄频带功率除以所述参考麦克风信号的当前全频带功率得到的比值进行混合均值计算得到。
19.根据权利要求17所述的集成电路，其中所述窄频带与全频带之比按所述窄频带与全频带之比的先前值以及由所述参考麦克风信号的当前窄频带功率除以等于所述参考麦克风信号的当前全频带功率减去存在于所述窄频带功率的频率范围以外的参考麦克风信号离群值的当前功率的量得到的比值进行混合均值计算得到。
20.根据权利要求17所述的集成电路，其中：
响应于判定在所述参考麦克风信号上未检测到扰动，所述窄频带与全频带之比按所述窄频带与全频带之比的先前值以及由所述参考麦克风信号的当前窄频带功率除以所述参考麦克风信号的当前全频带功率得到的比值进行混合均值计算得到；以及
响应于判定在参考麦克风信号上检测到扰动，所述窄频带与全频带之比按等于所述参考麦克风信号的窄频带与全频带之比的先前值进行计算得到。
21.根据权利要求17所述的集成电路，其中所述窄频带功率包括频率在50Hz与380Hz之间的所述参考麦克风信号的功率。
22.根据权利要求17所述的集成电路，其中所述处理电路基于所计算的窄频带与全频带之比，通过控制所述系数控制方块的至少一个系数的步长，根据所计算的窄频带与全频带之比来调适所述自适应滤波器的响应。
23.根据权利要求17所述的集成电路，其中所述处理电路基于所计算的窄频带与全频带之比，通过控制所述自适应滤波器的自适应噪声控制增益，根据所计算的窄频带与全频带之比来调适所述自适应滤波器的响应。
24.根据权利要求17所述的集成电路，其中所述参考麦克风信号所述的窄频带功率主要归因于由车辆行驶引起的周围噪声。
CN201480044764.9A 2013-06-14 2014-06-05 窄频带噪声检测与消除的***及方法 Active CN105453587B (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US13/917,843 2013-06-14
US13/917,843 US9264808B2 (en) 2013-06-14 2013-06-14 Systems and methods for detection and cancellation of narrow-band noise
PCT/US2014/040999 WO2014200787A1 (en) 2013-06-14 2014-06-05 Systems and methods for detection and cancellation of narrow-band noise

Publications (2)

Publication Number Publication Date
CN105453587A CN105453587A (zh) 2016-03-30
CN105453587B true CN105453587B (zh) 2019-04-09

Family

ID=51033558

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201480044764.9A Active CN105453587B (zh) 2013-06-14 2014-06-05 窄频带噪声检测与消除的***及方法

Country Status (6)

Country Link
US (1) US9264808B2 (zh)
EP (1) EP3008916B1 (zh)
JP (1) JP6289622B2 (zh)
KR (1) KR102205574B1 (zh)
CN (1) CN105453587B (zh)
WO (1) WO2014200787A1 (zh)

Families Citing this family (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103270552B (zh) 2010-12-03 2016-06-22 美国思睿逻辑有限公司 在个人语音装置中的适应性噪音消除器的监督控制
US8908877B2 (en) 2010-12-03 2014-12-09 Cirrus Logic, Inc. Ear-coupling detection and adjustment of adaptive response in noise-canceling in personal audio devices
US8958571B2 (en) 2011-06-03 2015-02-17 Cirrus Logic, Inc. MIC covering detection in personal audio devices
US9824677B2 (en) 2011-06-03 2017-11-21 Cirrus Logic, Inc. Bandlimiting anti-noise in personal audio devices having adaptive noise cancellation (ANC)
US9318094B2 (en) 2011-06-03 2016-04-19 Cirrus Logic, Inc. Adaptive noise canceling architecture for a personal audio device
US8948407B2 (en) 2011-06-03 2015-02-03 Cirrus Logic, Inc. Bandlimiting anti-noise in personal audio devices having adaptive noise cancellation (ANC)
US9325821B1 (en) 2011-09-30 2016-04-26 Cirrus Logic, Inc. Sidetone management in an adaptive noise canceling (ANC) system including secondary path modeling
US9318090B2 (en) 2012-05-10 2016-04-19 Cirrus Logic, Inc. Downlink tone detection and adaptation of a secondary path response model in an adaptive noise canceling system
US9123321B2 (en) 2012-05-10 2015-09-01 Cirrus Logic, Inc. Sequenced adaptation of anti-noise generator response and secondary path response in an adaptive noise canceling system
US9319781B2 (en) 2012-05-10 2016-04-19 Cirrus Logic, Inc. Frequency and direction-dependent ambient sound handling in personal audio devices having adaptive noise cancellation (ANC)
US9532139B1 (en) 2012-09-14 2016-12-27 Cirrus Logic, Inc. Dual-microphone frequency amplitude response self-calibration
US9369798B1 (en) 2013-03-12 2016-06-14 Cirrus Logic, Inc. Internal dynamic range control in an adaptive noise cancellation (ANC) system
US9414150B2 (en) 2013-03-14 2016-08-09 Cirrus Logic, Inc. Low-latency multi-driver adaptive noise canceling (ANC) system for a personal audio device
US9502020B1 (en) 2013-03-15 2016-11-22 Cirrus Logic, Inc. Robust adaptive noise canceling (ANC) in a personal audio device
US10206032B2 (en) 2013-04-10 2019-02-12 Cirrus Logic, Inc. Systems and methods for multi-mode adaptive noise cancellation for audio headsets
US9462376B2 (en) 2013-04-16 2016-10-04 Cirrus Logic, Inc. Systems and methods for hybrid adaptive noise cancellation
US9478210B2 (en) 2013-04-17 2016-10-25 Cirrus Logic, Inc. Systems and methods for hybrid adaptive noise cancellation
US9460701B2 (en) 2013-04-17 2016-10-04 Cirrus Logic, Inc. Systems and methods for adaptive noise cancellation by biasing anti-noise level
US9578432B1 (en) 2013-04-24 2017-02-21 Cirrus Logic, Inc. Metric and tool to evaluate secondary path design in adaptive noise cancellation systems
US9264808B2 (en) 2013-06-14 2016-02-16 Cirrus Logic, Inc. Systems and methods for detection and cancellation of narrow-band noise
US9392364B1 (en) 2013-08-15 2016-07-12 Cirrus Logic, Inc. Virtual microphone for adaptive noise cancellation in personal audio devices
US9666176B2 (en) 2013-09-13 2017-05-30 Cirrus Logic, Inc. Systems and methods for adaptive noise cancellation by adaptively shaping internal white noise to train a secondary path
US9620101B1 (en) 2013-10-08 2017-04-11 Cirrus Logic, Inc. Systems and methods for maintaining playback fidelity in an audio system with adaptive noise cancellation
US10382864B2 (en) 2013-12-10 2019-08-13 Cirrus Logic, Inc. Systems and methods for providing adaptive playback equalization in an audio device
US10219071B2 (en) 2013-12-10 2019-02-26 Cirrus Logic, Inc. Systems and methods for bandlimiting anti-noise in personal audio devices having adaptive noise cancellation
US9704472B2 (en) 2013-12-10 2017-07-11 Cirrus Logic, Inc. Systems and methods for sharing secondary path information between audio channels in an adaptive noise cancellation system
US9369557B2 (en) 2014-03-05 2016-06-14 Cirrus Logic, Inc. Frequency-dependent sidetone calibration
US9479860B2 (en) 2014-03-07 2016-10-25 Cirrus Logic, Inc. Systems and methods for enhancing performance of audio transducer based on detection of transducer status
US9319784B2 (en) 2014-04-14 2016-04-19 Cirrus Logic, Inc. Frequency-shaped noise-based adaptation of secondary path adaptive response in noise-canceling personal audio devices
EP3152756B1 (en) * 2014-06-09 2019-10-23 Dolby Laboratories Licensing Corporation Noise level estimation
US10181315B2 (en) 2014-06-13 2019-01-15 Cirrus Logic, Inc. Systems and methods for selectively enabling and disabling adaptation of an adaptive noise cancellation system
US9478212B1 (en) 2014-09-03 2016-10-25 Cirrus Logic, Inc. Systems and methods for use of adaptive secondary path estimate to control equalization in an audio device
US9552805B2 (en) 2014-12-19 2017-01-24 Cirrus Logic, Inc. Systems and methods for performance and stability control for feedback adaptive noise cancellation
WO2017029550A1 (en) 2015-08-20 2017-02-23 Cirrus Logic International Semiconductor Ltd Feedback adaptive noise cancellation (anc) controller and method having a feedback response partially provided by a fixed-response filter
US9578415B1 (en) 2015-08-21 2017-02-21 Cirrus Logic, Inc. Hybrid adaptive noise cancellation system with filtered error microphone signal
US9812149B2 (en) * 2016-01-28 2017-11-07 Knowles Electronics, Llc Methods and systems for providing consistency in noise reduction during speech and non-speech periods
US10013966B2 (en) 2016-03-15 2018-07-03 Cirrus Logic, Inc. Systems and methods for adaptive active noise cancellation for multiple-driver personal audio device
US10276145B2 (en) * 2017-04-24 2019-04-30 Cirrus Logic, Inc. Frequency-domain adaptive noise cancellation system
US10530936B1 (en) * 2019-03-15 2020-01-07 Motorola Solutions, Inc. Method and system for acoustic feedback cancellation using a known full band sequence
CN110417702B (zh) * 2019-07-23 2021-06-15 三维通信股份有限公司 滤波器系数生成方法、***和降低信号峰均比的***
US11468875B2 (en) 2020-12-15 2022-10-11 Google Llc Ambient detector for dual mode ANC

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003015275A1 (en) * 2001-08-07 2003-02-20 Dspfactory, Ltd. Sub-band adaptive signal processing in an oversampled filterbank
US6766292B1 (en) * 2000-03-28 2004-07-20 Tellabs Operations, Inc. Relative noise ratio weighting techniques for adaptive noise cancellation
EP2133866A1 (en) * 2008-06-13 2009-12-16 Harman Becker Automotive Systems GmbH Adaptive noise control system

Family Cites Families (233)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE459204B (sv) 1986-01-27 1989-06-12 Laxao Bruks Ab Saett och anordning foer framstaellning av formstycken av bindemedelsimpregnerad mineralull
US5117461A (en) 1989-08-10 1992-05-26 Mnc, Inc. Electroacoustic device for hearing needs including noise cancellation
JP3471370B2 (ja) 1991-07-05 2003-12-02 本田技研工業株式会社 能動振動制御装置
US5548681A (en) 1991-08-13 1996-08-20 Kabushiki Kaisha Toshiba Speech dialogue system for realizing improved communication between user and system
JP2939017B2 (ja) 1991-08-30 1999-08-25 日産自動車株式会社 能動型騒音制御装置
US5359662A (en) 1992-04-29 1994-10-25 General Motors Corporation Active noise control system
US5321759A (en) 1992-04-29 1994-06-14 General Motors Corporation Active noise control system for attenuating engine generated noise
US5251263A (en) 1992-05-22 1993-10-05 Andrea Electronics Corporation Adaptive noise cancellation and speech enhancement system and apparatus therefor
US5278913A (en) 1992-07-28 1994-01-11 Nelson Industries, Inc. Active acoustic attenuation system with power limiting
KR0130635B1 (ko) 1992-10-14 1998-04-09 모리시타 요이찌 연소 장치의 적응 소음 시스템
GB9222103D0 (en) 1992-10-21 1992-12-02 Lotus Car Adaptive control system
JP2929875B2 (ja) 1992-12-21 1999-08-03 日産自動車株式会社 能動型騒音制御装置
US5465413A (en) 1993-03-05 1995-11-07 Trimble Navigation Limited Adaptive noise cancellation
US5909498A (en) 1993-03-25 1999-06-01 Smith; Jerry R. Transducer device for use with communication apparatus
US5481615A (en) 1993-04-01 1996-01-02 Noise Cancellation Technologies, Inc. Audio reproduction system
US5425105A (en) 1993-04-27 1995-06-13 Hughes Aircraft Company Multiple adaptive filter active noise canceller
US7103188B1 (en) 1993-06-23 2006-09-05 Owen Jones Variable gain active noise cancelling system with improved residual noise sensing
AU7355594A (en) 1993-06-23 1995-01-17 Noise Cancellation Technologies, Inc. Variable gain active noise cancellation system with improved residual noise sensing
JPH07248778A (ja) 1994-03-09 1995-09-26 Fujitsu Ltd 適応フィルタの係数更新方法
JPH07325588A (ja) 1994-06-02 1995-12-12 Matsushita Seiko Co Ltd 消音装置
JP3385725B2 (ja) 1994-06-21 2003-03-10 ソニー株式会社 映像を伴うオーディオ再生装置
US5586190A (en) 1994-06-23 1996-12-17 Digisonix, Inc. Active adaptive control system with weight update selective leakage
JPH0823373A (ja) 1994-07-08 1996-01-23 Kokusai Electric Co Ltd 通話器回路
US5815582A (en) 1994-12-02 1998-09-29 Noise Cancellation Technologies, Inc. Active plus selective headset
JP2843278B2 (ja) 1995-07-24 1999-01-06 松下電器産業株式会社 騒音制御型送受話器
US5699437A (en) 1995-08-29 1997-12-16 United Technologies Corporation Active noise control system using phased-array sensors
JPH0993087A (ja) * 1995-09-26 1997-04-04 Fujitsu Ltd 適応フィルタ係数の設定制御方法および装置
US6434246B1 (en) 1995-10-10 2002-08-13 Gn Resound As Apparatus and methods for combining audio compression and feedback cancellation in a hearing aid
GB2307617B (en) 1995-11-24 2000-01-12 Nokia Mobile Phones Ltd Telephones with talker sidetone
JPH11502324A (ja) 1995-12-15 1999-02-23 フィリップス エレクトロニクス エヌ ベー 適応雑音除去装置、雑音減少システム及び送受信機
US5706344A (en) 1996-03-29 1998-01-06 Digisonix, Inc. Acoustic echo cancellation in an integrated audio and telecommunication system
US6850617B1 (en) 1999-12-17 2005-02-01 National Semiconductor Corporation Telephone receiver circuit with dynamic sidetone signal generator controlled by voice activity detection
US5832095A (en) 1996-10-18 1998-11-03 Carrier Corporation Noise canceling system
US5991418A (en) 1996-12-17 1999-11-23 Texas Instruments Incorporated Off-line path modeling circuitry and method for off-line feedback path modeling and off-line secondary path modeling
JPH10190589A (ja) 1996-12-17 1998-07-21 Texas Instr Inc <Ti> 適応ノイズ制御システムおよびオンラインフィードバック経路モデル化およびオンライン２次経路モデル化方法
US6278786B1 (en) 1997-07-29 2001-08-21 Telex Communications, Inc. Active noise cancellation aircraft headset system
TW392416B (en) 1997-08-18 2000-06-01 Noise Cancellation Tech Noise cancellation system for active headsets
US6219427B1 (en) 1997-11-18 2001-04-17 Gn Resound As Feedback cancellation improvements
US6282176B1 (en) 1998-03-20 2001-08-28 Cirrus Logic, Inc. Full-duplex speakerphone circuit including a supplementary echo suppressor
WO1999053476A1 (fr) 1998-04-15 1999-10-21 Fujitsu Limited Dispositif antibruit actif
DE69939796D1 (de) 1998-07-16 2008-12-11 Matsushita Electric Ind Co Ltd Lärmkontrolleanordnung
US6434247B1 (en) 1999-07-30 2002-08-13 Gn Resound A/S Feedback cancellation apparatus and methods utilizing adaptive reference filter mechanisms
WO2001033814A1 (en) 1999-11-03 2001-05-10 Tellabs Operations, Inc. Integrated voice processing system for packet networks
GB2360165A (en) 2000-03-07 2001-09-12 Central Research Lab Ltd A method of improving the audibility of sound from a loudspeaker located close to an ear
SG106582A1 (en) 2000-07-05 2004-10-29 Univ Nanyang Active noise control system with on-line secondary path modeling
US7058463B1 (en) 2000-12-29 2006-06-06 Nokia Corporation Method and apparatus for implementing a class D driver and speaker system
US6768795B2 (en) 2001-01-11 2004-07-27 Telefonaktiebolaget Lm Ericsson (Publ) Side-tone control within a telecommunication instrument
US6940982B1 (en) 2001-03-28 2005-09-06 Lsi Logic Corporation Adaptive noise cancellation (ANC) for DVD systems
US6996241B2 (en) 2001-06-22 2006-02-07 Trustees Of Dartmouth College Tuned feedforward LMS filter with feedback control
AUPR604201A0 (en) 2001-06-29 2001-07-26 Hearworks Pty Ltd Telephony interface apparatus
WO2003015074A1 (en) 2001-08-08 2003-02-20 Nanyang Technological University,Centre For Signal Processing. Active noise control system with on-line secondary path modeling
CA2354858A1 (en) 2001-08-08 2003-02-08 Dspfactory Ltd. Subband directional audio signal processing using an oversampled filterbank
ATE507685T1 (de) 2002-01-12 2011-05-15 Oticon As Gegenüber windgeräuschen unempfindliches hörgerät
WO2007106399A2 (en) 2006-03-10 2007-09-20 Mh Acoustics, Llc Noise-reducing directional microphone array
US20100284546A1 (en) 2005-08-18 2010-11-11 Debrunner Victor Active noise control algorithm that requires no secondary path identification based on the SPR property
AU2003261203A1 (en) 2002-07-19 2004-02-09 The Penn State Research Foundation A linear independent method for noninvasive online secondary path modeling
CA2399159A1 (en) 2002-08-16 2004-02-16 Dspfactory Ltd. Convergence improvement for oversampled subband adaptive filters
US6917688B2 (en) 2002-09-11 2005-07-12 Nanyang Technological University Adaptive noise cancelling microphone system
US8005230B2 (en) 2002-12-20 2011-08-23 The AVC Group, LLC Method and system for digitally controlling a multi-channel audio amplifier
US7895036B2 (en) 2003-02-21 2011-02-22 Qnx Software Systems Co. System for suppressing wind noise
US7885420B2 (en) 2003-02-21 2011-02-08 Qnx Software Systems Co. Wind noise suppression system
US7092514B2 (en) 2003-02-27 2006-08-15 Telefonaktiebolaget Lm Ericsson (Publ) Audibility enhancement
US7242778B2 (en) 2003-04-08 2007-07-10 Gennum Corporation Hearing instrument with self-diagnostics
US7643641B2 (en) 2003-05-09 2010-01-05 Nuance Communications, Inc. System for communication enhancement in a noisy environment
GB2401744B (en) 2003-05-14 2006-02-15 Ultra Electronics Ltd An adaptive control unit with feedback compensation
US20050117754A1 (en) 2003-12-02 2005-06-02 Atsushi Sakawaki Active noise cancellation helmet, motor vehicle system including the active noise cancellation helmet, and method of canceling noise in helmet
US7466838B1 (en) 2003-12-10 2008-12-16 William T. Moseley Electroacoustic devices with noise-reducing capability
EP1577879B1 (en) 2004-03-17 2008-07-23 Harman Becker Automotive Systems GmbH Active noise tuning system, use of such a noise tuning system and active noise tuning method
US7492889B2 (en) 2004-04-23 2009-02-17 Acoustic Technologies, Inc. Noise suppression based on bark band wiener filtering and modified doblinger noise estimate
US20060035593A1 (en) 2004-08-12 2006-02-16 Motorola, Inc. Noise and interference reduction in digitized signals
DK200401280A (da) 2004-08-24 2006-02-25 Oticon As Lavfrekvens fase matchning til mikrofoner
EP1629808A1 (en) 2004-08-25 2006-03-01 Phonak Ag Earplug and method for manufacturing the same
CA2481629A1 (en) 2004-09-15 2006-03-15 Dspfactory Ltd. Method and system for active noise cancellation
JP2006197075A (ja) 2005-01-12 2006-07-27 Yamaha Corp マイクロフォンおよび拡声装置
US7680456B2 (en) 2005-02-16 2010-03-16 Texas Instruments Incorporated Methods and apparatus to perform signal removal in a low intermediate frequency receiver
US7330739B2 (en) 2005-03-31 2008-02-12 Nxp B.V. Method and apparatus for providing a sidetone in a wireless communication device
EP1732352B1 (en) 2005-04-29 2015-10-21 Nuance Communications, Inc. Detection and suppression of wind noise in microphone signals
EP1727131A2 (en) 2005-05-26 2006-11-29 Yamaha Hatsudoki Kabushiki Kaisha Noise cancellation helmet, motor vehicle system including the noise cancellation helmet and method of canceling noise in helmet
WO2006128768A1 (en) 2005-06-03 2006-12-07 Thomson Licensing Loudspeaker driver with integrated microphone
JP4846716B2 (ja) 2005-06-14 2011-12-28 グローリー株式会社 紙葉類繰出装置
WO2007011337A1 (en) 2005-07-14 2007-01-25 Thomson Licensing Headphones with user-selectable filter for active noise cancellation
CN1897054A (zh) 2005-07-14 2007-01-17 松下电器产业株式会社 可根据声音种类发出警报的传输装置及方法
DK1750483T3 (da) 2005-08-02 2011-02-21 Gn Resound As Høreapparat med vindstøjsundertrykkelse
JP4262703B2 (ja) 2005-08-09 2009-05-13 本田技研工業株式会社 能動型騒音制御装置
US20070047742A1 (en) 2005-08-26 2007-03-01 Step Communications Corporation, A Nevada Corporation Method and system for enhancing regional sensitivity noise discrimination
EP1938274A2 (en) 2005-09-12 2008-07-02 D.V.P. Technologies Ltd. Medical image processing
JP4742226B2 (ja) 2005-09-28 2011-08-10 国立大学法人九州大学 能動消音制御装置及び方法
JPWO2007046435A1 (ja) 2005-10-21 2009-04-23 パナソニック株式会社 騒音制御装置
US8345890B2 (en) 2006-01-05 2013-01-01 Audience, Inc. System and method for utilizing inter-microphone level differences for speech enhancement
US8744844B2 (en) 2007-07-06 2014-06-03 Audience, Inc. System and method for adaptive intelligent noise suppression
US8194880B2 (en) 2006-01-30 2012-06-05 Audience, Inc. System and method for utilizing omni-directional microphones for speech enhancement
GB2479672B (en) 2006-04-01 2011-11-30 Wolfson Microelectronics Plc Ambient noise-reduction control system
GB2446966B (en) 2006-04-12 2010-07-07 Wolfson Microelectronics Plc Digital circuit arrangements for ambient noise-reduction
US8706482B2 (en) 2006-05-11 2014-04-22 Nth Data Processing L.L.C. Voice coder with multiple-microphone system and strategic microphone placement to deter obstruction for a digital communication device
US7742790B2 (en) 2006-05-23 2010-06-22 Alon Konchitsky Environmental noise reduction and cancellation for a communication device including for a wireless and cellular telephone
US20070297620A1 (en) 2006-06-27 2007-12-27 Choy Daniel S J Methods and Systems for Producing a Zone of Reduced Background Noise
US7925307B2 (en) 2006-10-31 2011-04-12 Palm, Inc. Audio output using multiple speakers
US8126161B2 (en) 2006-11-02 2012-02-28 Hitachi, Ltd. Acoustic echo canceller system
US8270625B2 (en) 2006-12-06 2012-09-18 Brigham Young University Secondary path modeling for active noise control
GB2444988B (en) 2006-12-22 2011-07-20 Wolfson Microelectronics Plc Audio amplifier circuit and electronic apparatus including the same
US8019050B2 (en) 2007-01-03 2011-09-13 Motorola Solutions, Inc. Method and apparatus for providing feedback of vocal quality to a user
EP1947642B1 (en) 2007-01-16 2018-06-13 Apple Inc. Active noise control system
US8229106B2 (en) 2007-01-22 2012-07-24 D.S.P. Group, Ltd. Apparatus and methods for enhancement of speech
GB2441835B (en) 2007-02-07 2008-08-20 Sonaptic Ltd Ambient noise reduction system
DE102007013719B4 (de) 2007-03-19 2015-10-29 Sennheiser Electronic Gmbh & Co. Kg Hörer
US7365669B1 (en) 2007-03-28 2008-04-29 Cirrus Logic, Inc. Low-delay signal processing based on highly oversampled digital processing
JP5189307B2 (ja) 2007-03-30 2013-04-24 本田技研工業株式会社 能動型騒音制御装置
JP5002302B2 (ja) 2007-03-30 2012-08-15 本田技研工業株式会社 能動型騒音制御装置
JP4722878B2 (ja) 2007-04-19 2011-07-13 ソニー株式会社 ノイズ低減装置および音響再生装置
US7817808B2 (en) 2007-07-19 2010-10-19 Alon Konchitsky Dual adaptive structure for speech enhancement
EP2023664B1 (en) 2007-08-10 2013-03-13 Oticon A/S Active noise cancellation in hearing devices
US8855330B2 (en) 2007-08-22 2014-10-07 Dolby Laboratories Licensing Corporation Automated sensor signal matching
KR101409169B1 (ko) 2007-09-05 2014-06-19 삼성전자주식회사 억제 폭 조절을 통한 사운드 줌 방법 및 장치
WO2009042635A1 (en) 2007-09-24 2009-04-02 Sound Innovations Inc. In-ear digital electronic noise cancelling and communication device
EP2051543B1 (en) 2007-09-27 2011-07-27 Harman Becker Automotive Systems GmbH Automatic bass management
WO2009041012A1 (ja) * 2007-09-28 2009-04-02 Dimagic Co., Ltd. ノイズ制御システム
US8325934B2 (en) 2007-12-07 2012-12-04 Board Of Trustees Of Northern Illinois University Electronic pillow for abating snoring/environmental noises, hands-free communications, and non-invasive monitoring and recording
GB0725115D0 (en) 2007-12-21 2008-01-30 Wolfson Microelectronics Plc Split filter
GB0725110D0 (en) 2007-12-21 2008-01-30 Wolfson Microelectronics Plc Gain control based on noise level
GB0725111D0 (en) 2007-12-21 2008-01-30 Wolfson Microelectronics Plc Lower rate emulation
GB0725108D0 (en) 2007-12-21 2008-01-30 Wolfson Microelectronics Plc Slow rate adaption
JP4530051B2 (ja) 2008-01-17 2010-08-25 船井電機株式会社 音声信号送受信装置
EP2248257B1 (en) 2008-01-25 2011-08-10 Nxp B.V. Improvements in or relating to radio receivers
US8374362B2 (en) 2008-01-31 2013-02-12 Qualcomm Incorporated Signaling microphone covering to the user
US8194882B2 (en) 2008-02-29 2012-06-05 Audience, Inc. System and method for providing single microphone noise suppression fallback
US8184816B2 (en) 2008-03-18 2012-05-22 Qualcomm Incorporated Systems and methods for detecting wind noise using multiple audio sources
JP4572945B2 (ja) 2008-03-28 2010-11-04 ソニー株式会社 ヘッドフォン装置、信号処理装置、信号処理方法
US9142221B2 (en) 2008-04-07 2015-09-22 Cambridge Silicon Radio Limited Noise reduction
US8285344B2 (en) 2008-05-21 2012-10-09 DP Technlogies, Inc. Method and apparatus for adjusting audio for a user environment
JP5256119B2 (ja) 2008-05-27 2013-08-07 パナソニック株式会社 補聴器並びに補聴器に用いられる補聴処理方法及び集積回路
KR101470528B1 (ko) 2008-06-09 2014-12-15 삼성전자주식회사 적응 빔포밍을 위한 사용자 방향의 소리 검출 기반의 적응모드 제어 장치 및 방법
US8170494B2 (en) 2008-06-12 2012-05-01 Qualcomm Atheros, Inc. Synthesizer and modulator for a wireless transceiver
GB2461315B (en) 2008-06-27 2011-09-14 Wolfson Microelectronics Plc Noise cancellation system
ES2582232T3 (es) 2008-06-30 2016-09-09 Dolby Laboratories Licensing Corporation Detector de actividad de voz de múltiples micrófonos
JP2010023534A (ja) 2008-07-15 2010-02-04 Panasonic Corp 騒音低減装置
JP5241921B2 (ja) 2008-07-29 2013-07-17 ドルビー ラボラトリーズ ライセンシング コーポレイション 電子音響チャンネルの適応制御とイコライゼーションの方法
US8290537B2 (en) 2008-09-15 2012-10-16 Apple Inc. Sidetone adjustment based on headset or earphone type
US20100082339A1 (en) 2008-09-30 2010-04-01 Alon Konchitsky Wind Noise Reduction
US8306240B2 (en) 2008-10-20 2012-11-06 Bose Corporation Active noise reduction adaptive filter adaptation rate adjusting
US8355512B2 (en) 2008-10-20 2013-01-15 Bose Corporation Active noise reduction adaptive filter leakage adjusting
US9020158B2 (en) 2008-11-20 2015-04-28 Harman International Industries, Incorporated Quiet zone control system
US8135140B2 (en) 2008-11-20 2012-03-13 Harman International Industries, Incorporated System for active noise control with audio signal compensation
US9202455B2 (en) 2008-11-24 2015-12-01 Qualcomm Incorporated Systems, methods, apparatus, and computer program products for enhanced active noise cancellation
US8948410B2 (en) 2008-12-18 2015-02-03 Koninklijke Philips N.V. Active audio noise cancelling
EP2216774B1 (en) 2009-01-30 2015-09-16 Harman Becker Automotive Systems GmbH Adaptive noise control system and method
US8548176B2 (en) 2009-02-03 2013-10-01 Nokia Corporation Apparatus including microphone arrangements
CN102365875B (zh) 2009-03-30 2014-09-24 伯斯有限公司 个人声学设备位置确定
US8155330B2 (en) 2009-03-31 2012-04-10 Apple Inc. Dynamic audio parameter adjustment using touch sensing
US8442251B2 (en) 2009-04-02 2013-05-14 Oticon A/S Adaptive feedback cancellation based on inserted and/or intrinsic characteristics and matched retrieval
US9202456B2 (en) 2009-04-23 2015-12-01 Qualcomm Incorporated Systems, methods, apparatus, and computer-readable media for automatic control of active noise cancellation
EP2247119A1 (de) 2009-04-27 2010-11-03 Siemens Medical Instruments Pte. Ltd. Vorrichtung zum akustischen Analysieren einer Hörvorrichtung und Analyseverfahren
US8184822B2 (en) 2009-04-28 2012-05-22 Bose Corporation ANR signal processing topology
US8315405B2 (en) 2009-04-28 2012-11-20 Bose Corporation Coordinated ANR reference sound compression
US8345888B2 (en) 2009-04-28 2013-01-01 Bose Corporation Digital high frequency phase compensation
US20100296666A1 (en) 2009-05-25 2010-11-25 National Chin-Yi University Of Technology Apparatus and method for noise cancellation in voice communication
JP4734441B2 (ja) 2009-06-12 2011-07-27 株式会社東芝 電気音響変換装置
US8218779B2 (en) 2009-06-17 2012-07-10 Sony Ericsson Mobile Communications Ab Portable communication device and a method of processing signals therein
US8737636B2 (en) 2009-07-10 2014-05-27 Qualcomm Incorporated Systems, methods, apparatus, and computer-readable media for adaptive active noise cancellation
ATE550754T1 (de) 2009-07-30 2012-04-15 Nxp Bv Verfahren und vorrichtung zur aktiven geräuschsminderung unter anwendung von wahrnehmungsmaskierung
US8054662B2 (en) 2009-08-28 2011-11-08 International Business Machines Corporation Content addressable memory array
US8842848B2 (en) 2009-09-18 2014-09-23 Aliphcom Multi-modal audio system with automatic usage mode detection and configuration capability
CN102056050B (zh) 2009-10-28 2015-12-16 飞兆半导体公司 有源噪声消除
US8401200B2 (en) 2009-11-19 2013-03-19 Apple Inc. Electronic device and headset with speaker seal evaluation capabilities
US8385559B2 (en) 2009-12-30 2013-02-26 Robert Bosch Gmbh Adaptive digital noise canceller
EP2362381B1 (en) 2010-02-25 2019-12-18 Harman Becker Automotive Systems GmbH Active noise reduction system
JP2011191383A (ja) 2010-03-12 2011-09-29 Panasonic Corp 騒音低減装置
JP5557565B2 (ja) * 2010-03-19 2014-07-23 本田技研工業株式会社 能動型振動騒音制御装置
US20110288860A1 (en) 2010-05-20 2011-11-24 Qualcomm Incorporated Systems, methods, apparatus, and computer-readable media for processing of speech signals using head-mounted microphone pair
JP5593851B2 (ja) 2010-06-01 2014-09-24 ソニー株式会社 音声信号処理装置、音声信号処理方法、プログラム
US9053697B2 (en) 2010-06-01 2015-06-09 Qualcomm Incorporated Systems, methods, devices, apparatus, and computer program products for audio equalization
US9099077B2 (en) 2010-06-04 2015-08-04 Apple Inc. Active noise cancellation decisions using a degraded reference
US8515089B2 (en) 2010-06-04 2013-08-20 Apple Inc. Active noise cancellation decisions in a portable audio device
EP2395500B1 (en) 2010-06-11 2014-04-02 Nxp B.V. Audio device
EP2395501B1 (en) 2010-06-14 2015-08-12 Harman Becker Automotive Systems GmbH Adaptive noise control
WO2011159858A1 (en) 2010-06-17 2011-12-22 Dolby Laboratories Licensing Corporation Method and apparatus for reducing the effect of environmental noise on listeners
US20110317848A1 (en) 2010-06-23 2011-12-29 Motorola, Inc. Microphone Interference Detection Method and Apparatus
US8775172B2 (en) 2010-10-02 2014-07-08 Noise Free Wireless, Inc. Machine for enabling and disabling noise reduction (MEDNR) based on a threshold
GB2484722B (en) 2010-10-21 2014-11-12 Wolfson Microelectronics Plc Noise cancellation system
US20130243198A1 (en) 2010-11-05 2013-09-19 Semiconductor Ideas To The Market (Itom) Method for reducing noise included in a stereo signal, stereo signal processing device and fm receiver using the method
JP2012114683A (ja) 2010-11-25 2012-06-14 Kyocera Corp 携帯電話機および携帯電話機におけるエコー低減方法
EP2461323A1 (en) 2010-12-01 2012-06-06 Dialog Semiconductor GmbH Reduced delay digital active noise cancellation
CN103270552B (zh) 2010-12-03 2016-06-22 美国思睿逻辑有限公司 在个人语音装置中的适应性噪音消除器的监督控制
US8908877B2 (en) 2010-12-03 2014-12-09 Cirrus Logic, Inc. Ear-coupling detection and adjustment of adaptive response in noise-canceling in personal audio devices
JP2012123135A (ja) * 2010-12-08 2012-06-28 Panasonic Corp 能動騒音低減装置
US20120155666A1 (en) 2010-12-16 2012-06-21 Nair Vijayakumaran V Adaptive noise cancellation
US8718291B2 (en) 2011-01-05 2014-05-06 Cambridge Silicon Radio Limited ANC for BT headphones
WO2012107561A1 (en) 2011-02-10 2012-08-16 Dolby International Ab Spatial adaptation in multi-microphone sound capture
US9037458B2 (en) 2011-02-23 2015-05-19 Qualcomm Incorporated Systems, methods, apparatus, and computer-readable media for spatially selective audio augmentation
DE102011013343B4 (de) 2011-03-08 2012-12-13 Austriamicrosystems Ag Regelsystem für aktive Rauschunterdrückung sowie Verfahren zur aktiven Rauschunterdrückung
US8693700B2 (en) 2011-03-31 2014-04-08 Bose Corporation Adaptive feed-forward noise reduction
US9055367B2 (en) 2011-04-08 2015-06-09 Qualcomm Incorporated Integrated psychoacoustic bass enhancement (PBE) for improved audio
US20120263317A1 (en) 2011-04-13 2012-10-18 Qualcomm Incorporated Systems, methods, apparatus, and computer readable media for equalization
EP2528358A1 (en) 2011-05-23 2012-11-28 Oticon A/S A method of identifying a wireless communication channel in a sound system
US20120300960A1 (en) 2011-05-27 2012-11-29 Graeme Gordon Mackay Digital signal routing circuit
US8848936B2 (en) * 2011-06-03 2014-09-30 Cirrus Logic, Inc. Speaker damage prevention in adaptive noise-canceling personal audio devices
US8948407B2 (en) 2011-06-03 2015-02-03 Cirrus Logic, Inc. Bandlimiting anti-noise in personal audio devices having adaptive noise cancellation (ANC)
US9214150B2 (en) 2011-06-03 2015-12-15 Cirrus Logic, Inc. Continuous adaptation of secondary path adaptive response in noise-canceling personal audio devices
US9318094B2 (en) 2011-06-03 2016-04-19 Cirrus Logic, Inc. Adaptive noise canceling architecture for a personal audio device
US8958571B2 (en) 2011-06-03 2015-02-17 Cirrus Logic, Inc. MIC covering detection in personal audio devices
US9824677B2 (en) 2011-06-03 2017-11-21 Cirrus Logic, Inc. Bandlimiting anti-noise in personal audio devices having adaptive noise cancellation (ANC)
US9076431B2 (en) 2011-06-03 2015-07-07 Cirrus Logic, Inc. Filter architecture for an adaptive noise canceler in a personal audio device
EP2551845B1 (en) 2011-07-26 2020-04-01 Harman Becker Automotive Systems GmbH Noise reducing sound reproduction
US9857451B2 (en) 2012-04-13 2018-01-02 Qualcomm Incorporated Systems and methods for mapping a source location
US9142205B2 (en) 2012-04-26 2015-09-22 Cirrus Logic, Inc. Leakage-modeling adaptive noise canceling for earspeakers
US9014387B2 (en) 2012-04-26 2015-04-21 Cirrus Logic, Inc. Coordinated control of adaptive noise cancellation (ANC) among earspeaker channels
US9318090B2 (en) 2012-05-10 2016-04-19 Cirrus Logic, Inc. Downlink tone detection and adaptation of a secondary path response model in an adaptive noise canceling system
US9082387B2 (en) 2012-05-10 2015-07-14 Cirrus Logic, Inc. Noise burst adaptation of secondary path adaptive response in noise-canceling personal audio devices
US9076427B2 (en) 2012-05-10 2015-07-07 Cirrus Logic, Inc. Error-signal content controlled adaptation of secondary and leakage path models in noise-canceling personal audio devices
US9319781B2 (en) 2012-05-10 2016-04-19 Cirrus Logic, Inc. Frequency and direction-dependent ambient sound handling in personal audio devices having adaptive noise cancellation (ANC)
US9123321B2 (en) 2012-05-10 2015-09-01 Cirrus Logic, Inc. Sequenced adaptation of anti-noise generator response and secondary path response in an adaptive noise canceling system
US9538285B2 (en) 2012-06-22 2017-01-03 Verisilicon Holdings Co., Ltd. Real-time microphone array with robust beamformer and postfilter for speech enhancement and method of operation thereof
US9516407B2 (en) 2012-08-13 2016-12-06 Apple Inc. Active noise control with compensation for error sensing at the eardrum
US9113243B2 (en) 2012-08-16 2015-08-18 Cisco Technology, Inc. Method and system for obtaining an audio signal
US9129586B2 (en) * 2012-09-10 2015-09-08 Apple Inc. Prevention of ANC instability in the presence of low frequency noise
US9330652B2 (en) 2012-09-24 2016-05-03 Apple Inc. Active noise cancellation using multiple reference microphone signals
US9208769B2 (en) 2012-12-18 2015-12-08 Apple Inc. Hybrid adaptive headphone
US9107010B2 (en) 2013-02-08 2015-08-11 Cirrus Logic, Inc. Ambient noise root mean square (RMS) detector
US9106989B2 (en) 2013-03-13 2015-08-11 Cirrus Logic, Inc. Adaptive-noise canceling (ANC) effectiveness estimation and correction in a personal audio device
US9623220B2 (en) 2013-03-14 2017-04-18 The Alfred E. Mann Foundation For Scientific Research Suture tracking dilators and related methods
US9208771B2 (en) 2013-03-15 2015-12-08 Cirrus Logic, Inc. Ambient noise-based adaptation of secondary path adaptive response in noise-canceling personal audio devices
US20140294182A1 (en) 2013-03-28 2014-10-02 Cirrus Logic, Inc. Systems and methods for locating an error microphone to minimize or reduce obstruction of an acoustic transducer wave path
US10206032B2 (en) 2013-04-10 2019-02-12 Cirrus Logic, Inc. Systems and methods for multi-mode adaptive noise cancellation for audio headsets
US9066176B2 (en) 2013-04-15 2015-06-23 Cirrus Logic, Inc. Systems and methods for adaptive noise cancellation including dynamic bias of coefficients of an adaptive noise cancellation system
US9462376B2 (en) 2013-04-16 2016-10-04 Cirrus Logic, Inc. Systems and methods for hybrid adaptive noise cancellation
US9460701B2 (en) 2013-04-17 2016-10-04 Cirrus Logic, Inc. Systems and methods for adaptive noise cancellation by biasing anti-noise level
US9478210B2 (en) 2013-04-17 2016-10-25 Cirrus Logic, Inc. Systems and methods for hybrid adaptive noise cancellation
US9402124B2 (en) 2013-04-18 2016-07-26 Xiaomi Inc. Method for controlling terminal device and the smart terminal device thereof
US8907829B1 (en) 2013-05-17 2014-12-09 Cirrus Logic, Inc. Systems and methods for sampling in an input network of a delta-sigma modulator
US9264808B2 (en) 2013-06-14 2016-02-16 Cirrus Logic, Inc. Systems and methods for detection and cancellation of narrow-band noise
US9666176B2 (en) 2013-09-13 2017-05-30 Cirrus Logic, Inc. Systems and methods for adaptive noise cancellation by adaptively shaping internal white noise to train a secondary path
US9704472B2 (en) 2013-12-10 2017-07-11 Cirrus Logic, Inc. Systems and methods for sharing secondary path information between audio channels in an adaptive noise cancellation system
US10219071B2 (en) 2013-12-10 2019-02-26 Cirrus Logic, Inc. Systems and methods for bandlimiting anti-noise in personal audio devices having adaptive noise cancellation
US10382864B2 (en) 2013-12-10 2019-08-13 Cirrus Logic, Inc. Systems and methods for providing adaptive playback equalization in an audio device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6766292B1 (en) * 2000-03-28 2004-07-20 Tellabs Operations, Inc. Relative noise ratio weighting techniques for adaptive noise cancellation
WO2003015275A1 (en) * 2001-08-07 2003-02-20 Dspfactory, Ltd. Sub-band adaptive signal processing in an oversampled filterbank
EP2133866A1 (en) * 2008-06-13 2009-12-16 Harman Becker Automotive Systems GmbH Adaptive noise control system

Also Published As

Publication number Publication date
EP3008916A1 (en) 2016-04-20
US20140369517A1 (en) 2014-12-18
WO2014200787A1 (en) 2014-12-18
JP2016526696A (ja) 2016-09-05
US9264808B2 (en) 2016-02-16
EP3008916B1 (en) 2021-12-22
KR102205574B1 (ko) 2021-01-21
CN105453587A (zh) 2016-03-30
KR20160020508A (ko) 2016-02-23
JP6289622B2 (ja) 2018-03-07

Similar Documents

Publication Publication Date Title
CN105453587B (zh) 窄频带噪声检测与消除的***及方法
CN105284126B (zh) 包括自适应消噪***的系数的动态偏置的自适应消噪***及方法
CN105981408B (zh) 用于塑形音频声道之间的次级路径信息的***和方法
CN105122350B (zh) 个人音频装置中的自适应消噪有效性估计和校正
CN103597540B (zh) 个人音频设备中耳朵耦合检测以及噪声消除中的自适应响应的调节
US9633646B2 (en) Oversight control of an adaptive noise canceler in a personal audio device
CN103765505B (zh) 在适应性噪音消除个人音频设备中的扬声器损坏阻止
US10181315B2 (en) Systems and methods for selectively enabling and disabling adaptation of an adaptive noise cancellation system
CN105074814B (zh) 个人音频装置的低时延多驱动器自适应消噪(anc)***
US10382864B2 (en) Systems and methods for providing adaptive playback equalization in an audio device
US10206032B2 (en) Systems and methods for multi-mode adaptive noise cancellation for audio headsets
US20140314244A1 (en) Systems and methods for adaptive noise cancellation by biasing anti-noise level
CN105723447A (zh) 通过对内部白噪声进行自适应整形以训练辅助路径的自适应消噪***及方法
US9392364B1 (en) Virtual microphone for adaptive noise cancellation in personal audio devices

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant