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    Method and apparatus for removing noise from electronic signal
    1.
    发明专利
    Method and apparatus for removing noise from electronic signal 审中-公开
    从电子信号中去除噪声的方法和装置

    公开(公告)号：JP2013178570A

    公开(公告)日：2013-09-09

    申请号：JP2013107341

    申请日：2013-05-21

    Applicant: Aliphcom ,  アリフコム

    Inventor： BURNETT GREGORY C ,  BREITFELLER ERIC F

    IPC: G10L15/20 ,  G10L21/0272 ,  G10L11/02 ,  G10L19/02 ,  H04R3/00

    CPC classification number: G10L21/0208 ,  G10L19/0204 ,  G10L25/78 ,  G10L2021/02082 ,  G10L2021/02161 ,  G10L2021/02168

    Abstract: PROBLEM TO BE SOLVED: To provide a method and system for removing acoustic noise from human speech, in which noise is removed irrespective of the type, magnitude or orientation of noise to restore a signal after the removal.SOLUTION: A system includes a microphone and a sensor connected to a processor. The microphone receives acoustic signals and a VAD supplies a signal of a binary 1 when speech (both voiced and unvoiced) is occurring and of a binary 0 in the absence of speech. The processor includes a denoising algorithm, and it generates transfer functions. The transfer functions include a transfer function generated in response to a determination that voicing information is not present in the acoustic signal received during a specified time period. Also, the transfer functions include a transfer function generated in response to a determination that voicing information is present in the acoustic signal during a specified time period. At least one denoised acoustic data stream is generated using the transfer functions.

    Abstract translation: 要解决的问题：提供一种用于从人类语音中去除声学噪声的方法和系统，其中噪声被去除，而不管噪声的类型，幅度或取向如何，以在去除之后恢复信号。解决方案：系统包括麦克风和 连接到处理器的传感器。 麦克风接收声信号，并且当语音（有声和无声）出现时，VAD提供二进制1的信号，并且在没有语音的情况下提供二进制0。 处理器包括一个去噪算法，它产生传递函数。 传递函数包括响应于在指定时间段期间接收的声信号中不存在声音信息的确定而产生的传递函数。 此外，传递函数包括响应于在指定时间段期间声音信息存在于声信号中的确定而产生的传递函数。 使用传递函数生成至少一个去噪的声学数据流。

    Method and apparatus for removing noise from electronic signal
    2.
    发明专利
    Method and apparatus for removing noise from electronic signal 审中-公开
    从电子信号中去除噪声的方法和装置

    公开(公告)号：JP2011203755A

    公开(公告)日：2011-10-13

    申请号：JP2011139645

    申请日：2011-06-23

    Applicant: Aliphcom ,  アリフコム

    Inventor： BURNETT GREGORY C ,  BREITFELLER ERIC F

    IPC: G10L15/20 ,  G10L21/02 ,  G10L11/02 ,  G10L19/02 ,  H04R3/00

    CPC classification number: G10L21/0208 ,  G10L19/0204 ,  G10L25/78 ,  G10L2021/02082 ,  G10L2021/02161 ,  G10L2021/02168

    Abstract: PROBLEM TO BE SOLVED: To provide a method and a system for removing acoustic noise from human speech, wherein noise is removed to restore a signal therefrom regardless of noise type, amplitude, or orientation.SOLUTION: The system includes a microphone and a sensor coupled with a processor. The microphone receives an acoustic signal, and VAD (voice activity detection) provides a binary one when speech (voiced and unvoiced) is occurring, and a binary zero in the absence of speech. The processor includes denoising algorithms that generate transfer functions. The transfer functions include a transfer function generated in response to a determination that voicing information is absent in the received acoustic signal during a specified time period. The transfer functions are used to generate at least one denoised acoustic data stream.

    Abstract translation: 要解决的问题：提供一种用于从人类语音中去除声学噪声的方法和系统，其中除去噪声以从其恢复信号，而不管噪声类型，幅度或取向如何。解决方案：该系统包括麦克风和耦合的传感器 与处理器。 麦克风接收声信号，当发生语音（有声和无声）时，VAD（语音活动检测）提供二进制，而在没有语音的情况下，二进制为零。 处理器包括产生传递函数的去噪算法。 传送函数包括响应于在指定时间段期间在接收的声信号中不存在发声信息的确定而产生的传递函数。 传递函数用于产生至少一个去噪声学数据流。

    VIBRATION SENSOR AND ACOUSTIC VOICE ACTIVITY DETECTION SYSTEM (VADS) FOR USE WITH ELECTRONIC SYSTEMS
    3.
    发明专利
    VIBRATION SENSOR AND ACOUSTIC VOICE ACTIVITY DETECTION SYSTEM (VADS) FOR USE WITH ELECTRONIC SYSTEMS 未知

    公开(公告)号：CA2798512A1

    公开(公告)日：2011-11-10

    申请号：CA2798512

    申请日：2011-05-03

    Applicant: ALIPHCOM INC

    Inventor： JING ZHINIAN ,  PETIT NICOLAS ,  BURNETT GREGORY C

    IPC: G10L25/78 ,  G01H1/12 ,  G10L21/0208 ,  G10L25/06 ,  G10L25/84 ,  G10L25/90 ,  G10L25/93

    Abstract: A voice activity detector (VAD) combines the use of an acoustic VAD and a vibration sensor VAD as appropriate to the conditions a host device is operated. The VAD includes a first detector receiving a first signal and a second detector receiving a second signal. The VAD includes a first VAD component coupled to the first and second detectors. The first VAD component determines that the first signal corresponds to voiced speech when energy resulting from at least one operation on the first signal exceeds a first threshold. The VAD includes a second VAD component coupled to the second detector. The second VAD component determines that the second signal corresponds to voiced speech when a ratio of a second parameter corresponding to the second signal and a first parameter corresponding to the first signal exceeds a second threshold.

    NICROPHONE AND VOICE ACTIVITY DETECTION (VAD) CONFIGURATIONS FOR USE WITH COMMUNICATION SYSTEMS
    7.
    发明专利
    NICROPHONE AND VOICE ACTIVITY DETECTION (VAD) CONFIGURATIONS FOR USE WITH COMMUNICATION SYSTEMS 未知

    公开(公告)号：AU2003223359A1

    公开(公告)日：2003-10-13

    申请号：AU2003223359

    申请日：2003-03-27

    Applicant: ALIPHCOM

    Inventor： ASSEILY ALEXANDER M ,  BURNETT GREGORY C ,  PETIT NICOLAS J ,  EINUADI ANDREW E

    IPC: H04R1/40 ,  G10L11/02 ,  G10L25/93 ,  H04M1/00 ,  H04R3/00 ,  G10L21/02 ,  H04R1/46

    Abstract: Communication systems are described, including both portable handset and headset devices, which use a number of microphone configurations to receive acoustic signals of an environment. The microphone configurations include, for example, a two-microphone array including two unidirectional microphones, and a two-microphone array including one unidirectional microphone and one omnidirectional microphone. The communication systems also include Voice Activity Detection (VAD) devices to provide information of human voicing activity. Components of the communications systems receive the acoustic signals and voice activity signals and, in response, automatically generate control signals from data of the voice activity signals. Components of the communication systems use the control signals to automatically select a denoising method appropriate to data of frequency subbands of the acoustic signals. The selected denoising method is applied to the acoustic signals to generate denoised acoustic signals when the acoustic signal includes speech and noise.

    Method and apparatus for removing noise from electronic signals
    8.
    发明专利
    Method and apparatus for removing noise from electronic signals 未知

    公开(公告)号：AU7695501A

    公开(公告)日：2002-01-30

    申请号：AU7695501

    申请日：2001-07-17

    Applicant: ALIPHCOM

    Inventor： BURNETT GREGORY C ,  BREITFELLER ERIC F

    IPC: G10L15/20 ,  G10L11/02 ,  G10L19/02 ,  G10L21/00

    Abstract: A method and system are provided for acoustic noise removal from human speech, wherein noise is removed without respect to noise type, amplitude, or orientation. The system includes microphones and a voice activity detection (VAD) data stream coupled among a processor. The microphones receive acoustic signals and the VAD produces a signal including a binary one when speech (voiced and unvoiced) is occurring and a binary zero in the absence of speech. The processor includes denoising algorithms that generate transfer functions. The transfer functions include a transfer functions generated in response to a determination that voicing information is absent from the received acoustic signal during a specified time period. The transfer functions also include transfer functions generated in response to a determination that voicing information is present in the acoustic signal during a specified time period. At least one denoised acoustic data stream is generated using the transfer functions.

    METHOD AND APPARATUS FOR REMOVING NOISE FROM SPEECH SIGNALS
    9.
    发明专利
    METHOD AND APPARATUS FOR REMOVING NOISE FROM SPEECH SIGNALS 未知

    公开(公告)号：CA2416926A1

    公开(公告)日：2002-01-24

    申请号：CA2416926

    申请日：2001-07-17

    Applicant: ALIPHCOM

    Inventor： BREITFELLER ERIC F ,  BURNETT GREGORY C

    IPC: G10L15/20 ,  G10L11/02 ,  G10L19/02 ,  G10L21/02

    Abstract: A method and system are provided for acoustic noise removal from human speec h, wherein noise is removed without respect to noise type, amplitude, or orientation. The system includes microphones and a voice activity detection (VAD) data stream coupled among a processor. The microphones receive acousti c signals and the VAD produces a signal including a binary one when speech (voiced and unvoiced) is occurring and a binary zero in the absence of speec h. The processor includes denoising algorithms that generate transfer functions . The transfer functions include a transfer function generated in response to a determination that voicing information is absent from the received acoustic signal during a specified time period. The transfer functions also include transfer functions generated in response to a determination that voicing information is present in the acoustic signal during a specified time period . At least one denoised acoustic data stream is generated using the transfer functions.

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