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    SIGNAL PROCESSING DEVICE, SIGNAL PROCESSING METHOD, AND COMPUTER PROGRAM
    31.
    发明公开
    SIGNAL PROCESSING DEVICE, SIGNAL PROCESSING METHOD, AND COMPUTER PROGRAM 审中-公开
    信号处理装置，信号处理方法和计算机程序

    公开(公告)号：EP3208797A1

    公开(公告)日：2017-08-23

    申请号：EP15851236.8

    申请日：2015-08-25

    Applicant: Sony Corporation

    Inventor： TSUCHIYA, Shinpei ,  OOKURI, Kazunobu ,  ITABASHI, Tetsunori ,  ASADA, Kohei

    IPC: G10K11/178

    CPC classification number: G10K11/178 ,  G10K11/17823 ,  G10K11/17827 ,  G10K11/17873 ,  G10K11/17885 ,  G10K2210/1053 ,  G10K2210/3016 ,  G10K2210/3028

    Abstract: [Object]
    To provide a signal processing device capable of effectively using resources for generating a noise cancellation signal.
    [Solution]
    Provided is the signal processing device including: a signal analyzing unit configured to analyze a second audio signal based on a first audio signal which is input and a sound collected through a microphone; a cancellation processing unit configured to generate a cancellation signal for canceling the second audio signal; and a parameter generating unit configured to generate a control parameter used in the cancellation processing unit based on a result of analysis performed by the signal analyzing unit.

    Abstract translation: 本发明的目的在于提供一种能够有效利用资源来生成噪声消除信号的信号处理装置。 所述信号处理装置包括：信号分析单元，被配置为基于输入的第一音频信号和通过麦克风收集的声音来分析第二音频信号; 取消处理单元，被配置为生成用于取消第二音频信号的取消信号; 以及参数生成单元，被配置为基于信号分析单元执行的分析结果来生成在消除处理单元中使用的控制参数。

    SYSTEMS AND METHODS FOR HYBRID ADAPTIVE NOISE CANCELLATION
    34.
    发明公开
    SYSTEMS AND METHODS FOR HYBRID ADAPTIVE NOISE CANCELLATION 审中-公开
    用于混合自适应噪声消除的系统和方法

    公开(公告)号：EP2987162A1

    公开(公告)日：2016-02-24

    申请号：EP14711079.5

    申请日：2014-02-28

    Applicant: Cirrus Logic, Inc.

    Inventor： HELLMAN, Ryan A.

    IPC: G10K11/178

    CPC classification number: G10K11/16 ,  G10K11/178 ,  G10K11/17817 ,  G10K11/1785 ,  G10K11/17885 ,  G10K2210/1081 ,  G10K2210/3017 ,  G10K2210/3022 ,  G10K2210/3026 ,  G10K2210/3027

    Abstract: In accordance with systems and methods of this disclosure, a method may include generating a feedforward anti-noise signal component from a result of measuring with the reference microphone countering the effects of ambient audio sounds at an acoustic output of a transducer by filtering an output of the reference microphone, adaptively generating a feedback anti-noise signal component from a result of measuring with an error microphone for countering the effects of ambient audio sounds at the acoustic output of the transducer by adapting a response of a feedback adaptive filter that filters a synthesized reference feedback to minimize the ambient audio sounds in the error microphone signal, wherein the synthesized reference feedback is based on a difference between the error microphone signal and the feedback anti-noise signal component.

    Abstract translation: 根据本公开的系统和方法，一种方法可以包括：从参考麦克风的测量结果生成前馈抗噪声信号分量，该参数麦克风通过滤波输出来抵消换能器的声输出处的环境音频声音的效果 所述参考麦克风根据利用误差麦克风进行测量的结果来自适应地生成反馈抗噪声信号分量，用于通过调整对所述换能器的声学输出进行滤波的反馈自适应滤波器的响应来对抗所述换能器的声学输出处的环境音频声音的影响 参考反馈以最小化所述误差麦克风信号中的环境音频声音，其中所述合成参考反馈基于所述误差麦克风信号与所述反馈抗噪声信号分量之间的差异。

    An adaptive noise canceling architecture for a personal audio device
    35.
    发明公开
    An adaptive noise canceling architecture for a personal audio device 审中-公开
    自适应降噪架构个人音频设备

    公开(公告)号：EP2824660A3

    公开(公告)日：2015-09-30

    申请号：EP14180975.6

    申请日：2012-04-30

    Applicant: Cirrus Logic, Inc.

    Inventor： Hendrix, Jon, D. ,  Kamath, Gautham, Devendra ,  Kwatra, Nitin ,  Abdollahzadeh Milani, Ali ,  Alderson, Jeffrey

    IPC: G10K11/178

    CPC classification number: G10K11/178 ,  G10K11/17827 ,  G10K11/17854 ,  G10K11/17881 ,  G10K11/17885 ,  G10K2210/108 ,  G10K2210/1081 ,  G10K2210/30232 ,  G10K2210/3026 ,  G10K2210/3028 ,  G10K2210/3051 ,  G10K2210/3055 ,  H04R1/1083 ,  H04R3/005

    Abstract: An integrated circuit for implementing at least a portion of a personal audio device is disclosed. The integrated circuit comprises an output adapted to provide a signal to a transducer including both source audio for playback to a listener and an anti-noise signal for countering the effects of ambient audio sounds in an acoustic output of the transducer. A reference microphone input receives a reference microphone signal indicative of the ambient audio sounds. Further, an analog-to-digital converter (41A) converts the reference microphone signal to a first reference microphone signal digital representation and a first sigma-delta quantizer (43A) quantizes the first digital representation to generate a lowered resolution second reference microphone signal digital representation. A processing circuit of the integrated circuit implements an adaptive filter (44A, 44B) having a response that generates the anti-noise signal from the lowered resolution second reference microphone signal digital representation to reduce the presence of the ambient audio sounds heard by the listener. The processing circuit implements a coefficient control block that shapes the response of the adaptive filter (44A, 44B) in conformity with the reference microphone signal by adapting the response of the adaptive filter (44A, 44B).

    Dynamically configurable ANR filter and signal processing topology
    36.
    发明公开
    Dynamically configurable ANR filter and signal processing topology 审中-公开
    动态可配置的ANR滤波器和信号处理拓扑

    公开(公告)号：EP2809084A3

    公开(公告)日：2015-02-18

    申请号：EP14171626.6

    申请日：2010-04-27

    Applicant: Bose Corporation

    Inventor： Carreras, Ricardo, F. ,  Joho, Marcel

    IPC: H04R1/10 ,  G10K11/178 ,  H04M1/05 ,  H03H17/02 ,  H03H17/04 ,  A61F11/14

    CPC classification number: H04B1/202 ,  A61F2011/145 ,  G10K11/17817 ,  G10K11/17881 ,  G10K11/17885 ,  G10K2210/1081 ,  G10K2210/3028 ,  G10K2210/30391 ,  G10K2210/3056 ,  G10K2210/3214 ,  G10K2210/503 ,  H03H17/0286 ,  H03H17/0288 ,  H03H17/0294 ,  H03H17/04 ,  H03H2017/0477 ,  H04M1/05 ,  H04R1/1083 ,  H04R3/005 ,  H04R5/04 ,  H04R2201/107 ,  H04R2205/022 ,  H04R2460/01 ,  H04R2460/03

    Abstract: An apparatus for providing ANR, comprising: a first ADC, a second ADC, a DAC; and a dynamically configurable digital signal processor (DSP) configured to: incorporate the first ADC, a first plurality of digital filters of a quantity and type specified by a first set of ANR settings, and the DAC into a first pathway; incorporate the second ADC, a second plurality of digital filters of a quantity and type specified by the first set of ANR settings, and the DAC into a second pathway; configure interconnections among the elements of the first and second pathways so that digital data from the first and second pathways are combined before flowing to the DAC; operate each of the digital filters using filter coefficients specified by the first set of ANR settings; transfer digital data through at least a portion of at least one of the first and second pathways at a data transfer rate specified by the first ANR settings; operate the first and second pathways to provide ANR; and change a parameter specified by the first set of ANR settings to a parameter specified by a second set of ANR settings in synchronization with a transfer of digital data along at least a portion of at least one of the first and second pathways.

    Abstract translation: 一种用于提供ANR的装置，包括：第一ADC，第二ADC，DAC; 以及动态可配置数字信号处理器（DSP），其被配置为：将第一ADC，由第一组ANR设置指定的数量和类型的第一多个数字滤波器以及DAC并入第一路径中; 将第二ADC，由第一组ANR设置指定的数量和类型的第二多个数字滤波器以及DAC并入第二路径; 配置所述第一路径和所述第二路径的元件之间的互连，使得来自所述第一路径和所述第二路径的数字数据在流向所述DAC之前被组合; 使用由第一组ANR设置指定的滤波器系数来操作每个数字滤波器; 以由所述第一ANR设置指定的数据传输速率通过所述第一和第二路径中的至少一个的至少一部分来传输数字数据; 操作第一和第二路径以提供ANR; 以及与数字数据沿着第一和第二路径中的至少一个的至少一部分的传送同步，将由第一组ANR设置指定的参数改变为由第二组ANR设置指定的参数。

    AN ADAPTIVE NOISE CANCELING ARCHITECTURE FOR A PERSONAL AUDIO DEVICE
    37.
    发明公开
    AN ADAPTIVE NOISE CANCELING ARCHITECTURE FOR A PERSONAL AUDIO DEVICE 审中-公开
    自适应降噪体结构的个人音频设备

    公开(公告)号：EP2715718A2

    公开(公告)日：2014-04-09

    申请号：EP12723554.7

    申请日：2012-04-30

    Applicant: Cirrus Logic, Inc.

    Inventor： HENDRIX, Jon, D. ,  KAMATH, Gautham, Devendra ,  KWATRA, Nitin ,  ABDOLLAHZADEH MILANI, Ali ,  ALDERSON, Jeffrey

    IPC: G10K11/178

    CPC classification number: G10K11/178 ,  G10K11/17827 ,  G10K11/17854 ,  G10K11/17881 ,  G10K11/17885 ,  G10K2210/108 ,  G10K2210/1081 ,  G10K2210/30232 ,  G10K2210/3026 ,  G10K2210/3028 ,  G10K2210/3051 ,  G10K2210/3055 ,  H04R1/1083 ,  H04R3/005

    Abstract: An integrated circuit (20) for implementing at least a portion of a personal audio device is disclosed. The integrated circuit (20) comprises an audio source having an output providing source audio for playback to a listener. A combiner (26) combines the source audio and an anti-noise signal for countering the effects of ambient audio sounds in an acoustic output of a transducer (SPKR), to generate an audio signal. A reference microphone input receives a reference microphone signal (ref) indicative of the ambient audio sounds and an error microphone input receives an error microphone signal (err) indicative of the acoustic output of the transducer (SPKR) and the ambient audio sounds at the transducer (SPKR). Further, a processing circuit (30) implements an adaptive filter having a response that generates the anti-noise signal from the reference microphone signal (ref) to reduce the presence of the ambient audio sounds heard by the listener. The processing circuit (30) implements a coefficient control block that shapes the response of the adaptive filter in conformity with the error microphone signal (err) and the reference microphone signal (ref) by adapting the response of the adaptive filter to minimize the ambient audio sounds at an error microphone. The processing circuit (30) is configured to detect whether the source audio is present at the output of the audio source, and in response to detecting that the source audio is present, to alter adaptation of the adaptive filter.

    A NOISE REDUCTION CIRCUIT WITH MONITORING FUNCTIONALITY
    40.
    发明公开
    A NOISE REDUCTION CIRCUIT WITH MONITORING FUNCTIONALITY 有权
    带监控功能的降噪电路

    公开(公告)号：EP2569954A1

    公开(公告)日：2013-03-20

    申请号：EP11780891.5

    申请日：2011-04-21

    Applicant: Creative Technology Ltd.

    Inventor： CHEAH, Chee Sin ,  KOH, Huoy Ru, Rachel ,  NG, Boon Cheong, Raymond

    IPC: H04R5/04 ,  H04R5/033

    CPC classification number: G10K11/17823 ,  G10K11/17827 ,  G10K11/17885 ,  G10K2210/1081 ,  G10K2210/3026 ,  H04R1/1083

    Abstract: A noise reduction circuit 200 for a headphone 100 is disclosed herein. In a described embodiment, the headphone 100 includes a speaker driver 110 and the circuit 200 comprises a microphone 112 configured to convert ambient sound into a corresponding electrical ambient signal and which is disposed adjacent to the speaker driver's diaphragm. The circuit 200 further includes an active noise reduction path configured to provide active noise reduction of the ambient sound based on the corresponding electrical ambient signal and a vocal signal compensation path configured to restore attenuated signals within the vocal range of the corresponding electrical ambient signal to increase audibility of vocal signals of the ambient sound. The circuit 200 also includes a switching device 204,210 arranged to selectively deliver the corresponding electrical ambient signal to the active noise reduction path or to the vocal signal compensation path.

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