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1. 发明申请

US20140161272A1 SPEECH ENHANCEMENT SYSTEM AND METHOD 有权
标题翻译：语音增强系统和方法
公开(公告)号：US20140161272A1
公开(公告)日：2014-06-12
申请号：US14232693
申请日：2011-07-14
申请人： Francois Marquis , Hans-Ueli Röck , Samuel Harsch , Yacine Azmi , Tim Jost
发明人： Francois Marquis , Hans-Ueli Röck , Samuel Harsch , Yacine Azmi , Tim Jost
IPC分类号： H04R3/02 , G10L21/0208
CPC分类号： H04R3/02 , G10L21/0208
摘要： A system for speech enhancement in a room having a directional lapel microphone arrangement for capturing an audio signal from a speaker's voice; audio signal processor for generating a processed audio signal from the captured audio signal, and an adaptive beamformer unit for imparting directivity to the microphone arrangement provides maximum sensitivity towards the speaker's mouth and minimum sensitivity towards noise sources identified by the beamformer unit. A unit shifts the frequency of components of the audio signal above a frequency threshold value only. A feedback cancelling unit has an adaptive filter and a selection unit which automatically switches between a first mode causing the audio signal to by-pass the adaptive filter and a second mode in which the audio signal is filtered by the adaptive filter. A loudspeaker arrangement generates sound according to the processed audio signal and has plural loudspeakers arranged to form a directional loudspeaker array.
摘要翻译：一种用于在房间中进行语音增强的系统，其具有用于从扬声器的语音捕获音频信号的定向翻转麦克风布置; 用于从所捕获的音频信号产生经处理的音频信号的音频信号处理器，以及用于赋予麦克风装置方向性的自适应波束形成器单元向扬声器的嘴提供最大灵敏度，并且对由波束形成器单元识别的噪声源提供最小灵敏度。一个单元将音频信号的分量的频率偏移到频率阈值以上。反馈消除单元具有自适应滤波器和选择单元，其自动地在引起音频信号的第一模式旁路自适应滤波器和第二模式，其中音频信号被自适应滤波器滤波。扬声器装置根据经处理的音频信号产生声音，并且具有布置成形成定向扬声器阵列的多个扬声器。

2. 发明授权

US09173028B2 Speech enhancement system and method 有权
标题翻译：语音增强系统和方法
公开(公告)号：US09173028B2
公开(公告)日：2015-10-27
申请号：US14232693
申请日：2011-07-14
申请人： Francois Marquis , Hans-Ueli Röck , Samuel Harsch , Yacine Azmi , Tim Jost
发明人： Francois Marquis , Hans-Ueli Röck , Samuel Harsch , Yacine Azmi , Tim Jost
IPC分类号： H04R3/02 , G10L21/0208
CPC分类号： H04R3/02 , G10L21/0208
摘要： A system for speech enhancement in a room having a directional lapel microphone arrangement for capturing an audio signal from a speaker's voice; audio signal processor for generating a processed audio signal from the captured audio signal, and an adaptive beamformer unit for imparting directivity to the microphone arrangement provides maximum sensitivity towards the speaker's mouth and minimum sensitivity towards noise sources identified by the beamformer unit. A unit shifts the frequency of components of the audio signal above a frequency threshold value only. A feedback cancelling unit has an adaptive filter and a selection unit which automatically switches between a first mode causing the audio signal to by-pass the adaptive filter and a second mode in which the audio signal is filtered by the adaptive filter. A loudspeaker arrangement generates sound according to the processed audio signal and has plural loudspeakers arranged to form a directional loudspeaker array.
摘要翻译：一种用于在房间中进行语音增强的系统，其具有用于从扬声器的语音捕获音频信号的定向翻转麦克风布置; 用于从所捕获的音频信号产生经处理的音频信号的音频信号处理器，以及用于赋予麦克风装置方向性的自适应波束形成器单元向扬声器的嘴提供最大灵敏度，并且对由波束形成器单元识别的噪声源提供最小灵敏度。一个单元将音频信号的分量的频率偏移到频率阈值以上。反馈消除单元具有自适应滤波器和选择单元，其自动地在引起音频信号的第一模式旁路自适应滤波器和第二模式，其中音频信号被自适应滤波器滤波。扬声器装置根据经处理的音频信号产生声音，并且具有布置成形成定向扬声器阵列的多个扬声器。

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