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1. 发明申请

US20070100605A1 Method for processing audio-signals 有权
标题翻译：音频信号处理方法
公开(公告)号：US20070100605A1
公开(公告)日：2007-05-03
申请号：US10568610
申请日：2004-08-19
申请人： Philippe Renevey , Phillippe Vuadens , Rolf Vetter , Stephan Dasen
发明人： Philippe Renevey , Phillippe Vuadens , Rolf Vetter , Stephan Dasen
IPC分类号： G10L21/00
CPC分类号： G10L21/0272 , G10L2021/065 , H04R3/005 , H04R25/407 , H04R25/505 , H04R25/552 , H04R2225/43
摘要： The invention regards a method for processing audio-signals whereby audio signals are captured at two spaced apart locations and subject to a transformation in the perceptual domain (Bar or Mel), whereupon: a) a (blind or supervised) source separation process is performed to give a first estimate of the wanted signal parts and the noise parts of the microphone signals and b) a coherence based separation process is performed to give a second estimate of the wanted signal parts and the noise parts of the microphone signals, and where further a sound field diffuseness detection is performed on the at least two signals, whereby further the sound field diffuseness detections is used to mix the output from the blind source separation and the coherence based separation process in order to achieve the best possible signal. The transfer functions calculated from the source separation are used to reconstruct a virtual stereophonic sound field in restore the spatial information about the source position in the enhanced signals.
摘要翻译：本发明涉及一种用于处理音频信号的方法，由此在两个间隔开的位置处捕获音频信号，并且在感知域（Bar或Mel）中进行变换，于是：a）执行（盲目或被监督）源分离处理给出麦克风信号的有用信号部分和噪声部分的第一估计，以及b）执行基于相干的分离处理，以给出麦克风信号的有用信号部分和噪声部分的第二估计，并且其中进一步对至少两个信号执行声场扩散检测，由此进一步使用声场扩散检测来混合来自盲源分离的输出和基于相干的分离过程，以便实现最佳可能的信号。从源分离算出的传递函数用于重构虚拟立体声声场，以恢复增强信号中源位置的空间信息。

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