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1. 发明申请

US20090106021A1 ROBUST TWO MICROPHONE NOISE SUPPRESSION SYSTEM 有权
标题翻译：坚固的两个麦克风噪声抑制系统
公开(公告)号：US20090106021A1
公开(公告)日：2009-04-23
申请号：US11874263
申请日：2007-10-18
申请人： Robert A. ZUREK , Jeffrey M. AXELROD , Joel A. CLARK , Holly L. FRANCOIS , Scott K. ISABELLE , David J. PEARCE , James A. REX
发明人： Robert A. ZUREK , Jeffrey M. AXELROD , Joel A. CLARK , Holly L. FRANCOIS , Scott K. ISABELLE , David J. PEARCE , James A. REX
IPC分类号： G10L21/00
CPC分类号： G10L21/0208 , G10L21/0272 , G10L2021/02165
摘要： A system, method, and apparatus for separating speech signal from a noisy acoustic environment. The separation process may include directional filtering, blind source separation, and dual input spectral subtraction noise suppressor. The input channels may include two omnidirectional microphones whose output is processed using phase delay filtering to form speech and noise beamforms. Further, the beamforms may be frequency corrected. The omnidirectional microphones generate one channel that is substantially only noise, and another channel that is a combination of noise and speech. A blind source separation algorithm augments the directional separation through statistical techniques. The noise signal and speech signal are then used to set process characteristics at a dual input noise spectral subtraction suppressor (DINS) to efficiently reduce or eliminate the noise component. In this way, the noise is effectively removed from the combination signal to generate a good qualify speech signal.
摘要翻译：一种用于从噪声声环境分离语音信号的系统，方法和装置。分离过程可以包括方向滤波，盲源分离和双输入频谱减法噪声抑制器。输入通道可以包括两个全向麦克风，其输出使用相位延迟滤波处理以形成语音和噪声波束形式。此外，波束形状可以被频率校正。全向麦克风产生基本上只有噪声的一个通道，以及作为噪声和语音的组合的另一个通道。盲源分离算法通过统计技术增强了方向分离。然后，噪声信号和语音信号用于设置双输入噪声频谱减法抑制器（DINS）的过程特性，以有效降低或消除噪声分量。以这种方式，有效地从组合信号中去除噪声以产生良好的合格语音信号。

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