公开(公告)号：WO03096031A2

公开(公告)日：2003-11-20

申请号：PCT/US0306893

申请日：2003-03-05

Applicant: ALIPHCOM

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

IPC: G10L15/20 ,  G10L21/0216 ,  G10L25/78 ,  G10L25/93 ,  G01R

CPC classification number: G10L25/93 ,  G10L2021/02165 ,  G10L2025/783

Abstract: Voice Activity Detection (VAD) devices, systems and methods are described for use with signal processing systems to denoise acoustic signals. Components of a signal processing system and/or VAD system receive acoustic signals and voice activity signals. Control signals are automatically generated from data of the voice activity signals. Components of the signal processing system and/or VAD system 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.

Abstract translation: 描述语音活动检测（VAD）设备，系统和方法用于信号处理系统去噪声信号。 信号处理系统和/或VAD系统的组件接收声信号和语音活动信号。 控制信号根据语音活动信号的数据自动生成。 信号处理系统和/或VAD系统的组件使用控制信号来自动选择适合于声信号的频率子带的数据的去噪方法。 将所选择的去噪方法应用于声信号以产生去噪的声信号。

公开(公告)号：WO0207151A3

公开(公告)日：2002-05-30

申请号：PCT/US0122490

申请日：2001-07-17

Applicant: ALIPHCOM ,  BURNETT GREGORY C ,  BREITFELLER ERIC F

Inventor： BURNETT GREGORY C ,  BREITFELLER ERIC F

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

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

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 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.

Abstract translation: 提供了一种用于从人类语音去除声学噪声的方法和系统，其中除噪声类型，振幅或取向之外的噪声被去除。 该系统包括麦克风和耦合在处理器之间的语音活动检测（VAD）数据流。 麦克风接收声信号，并且当语音（有声和无声）出现时，VAD产生包括二进制的信号，并且在没有语音的情况下产生二进制零。 处理器包括产生传递函数的去噪算法。 传递函数包括响应于在指定时间段期间从接收到的声信号中不存在发声信息而产生的传递函数。 传递函数还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。