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1. 发明申请

US20110103603A1 Noise Reduction System and Noise Reduction Method 有权
标题翻译：降噪系统和降噪方法
公开(公告)号：US20110103603A1
公开(公告)日：2011-05-05
申请号：US12771024
申请日：2010-04-30
申请人： Shih-Yu Pan , Min-Qiao Lu , Jiun-Bin Huang , Shyang-Jye Chang
发明人： Shih-Yu Pan , Min-Qiao Lu , Jiun-Bin Huang , Shyang-Jye Chang
IPC分类号： H03B29/00 , G10L21/02
CPC分类号： G10L21/0272
摘要： A noise reduction system and a noise reduction method are provided. The noise reduction system comprises a uni-directional microphone, an omni-directional microphone and a signal processing module. The signal processing module comprises an adaptive noise control (ANC) unit, a main noise reduction unit and an optimizing unit. The uni-directional microphone senses a first audio source to output a first audio signal, and the omni-directional microphone senses a second audio source to output a second audio signal. The ANC unit executes an adaptive noise control to output an estimated signal according to the first audio signal and the second audio signal. The main noise reduction unit executes a main noise reduction process to output a de-noise speech signal according to the estimated signal and the second audio signal. The optimizing unit executes an optimizing process to output an optimized speech signal according to the de-noise speech signal.
摘要翻译：提供降噪系统和降噪方法。降噪系统包括单向麦克风，全向麦克风和信号处理模块。信号处理模块包括自适应噪声控制（ANC）单元，主降噪单元和优化单元。单向麦克风感测第一音频源以输出第一音频信号，并且全向麦克风感测第二音频源以输出第二音频信号。 ANC单元执行自适应噪声控制，以根据第一音频信号和第二音频信号输出估计信号。主降噪单元执行主噪声降低处理，以根据估计的信号和第二音频信号输出去噪声语音信号。优化单元执行优化处理，以根据去噪语音信号输出优化的语音信号。

2. 发明授权

US08275141B2 Noise reduction system and noise reduction method 有权
标题翻译：降噪系统和降噪方法
公开(公告)号：US08275141B2
公开(公告)日：2012-09-25
申请号：US12771024
申请日：2010-04-30
申请人： Shih-Yu Pan , Min-Qiao Lu , Jiun-Bin Huang , Shyang-Jye Chang
发明人： Shih-Yu Pan , Min-Qiao Lu , Jiun-Bin Huang , Shyang-Jye Chang
IPC分类号： A61F11/06
CPC分类号： G10L21/0272
摘要： A noise reduction system and a noise reduction method are provided. The noise reduction system comprises a uni-directional microphone, an omni-directional microphone and a signal processing module. The signal processing module comprises an adaptive noise control (ANC) unit, a main noise reduction unit and an optimizing unit. The uni-directional microphone senses a first audio source to output a first audio signal, and the omni-directional microphone senses a second audio source to output a second audio signal. The ANC unit executes an adaptive noise control to output an estimated signal according to the first audio signal and the second audio signal. The main noise reduction unit executes a main noise reduction process to output a de-noise speech signal according to the estimated signal and the second audio signal. The optimizing unit executes an optimizing process to output an optimized speech signal according to the de-noise speech signal.
摘要翻译：提供降噪系统和降噪方法。降噪系统包括单向麦克风，全向麦克风和信号处理模块。信号处理模块包括自适应噪声控制（ANC）单元，主降噪单元和优化单元。单向麦克风感测第一音频源以输出第一音频信号，并且全向麦克风感测第二音频源以输出第二音频信号。 ANC单元执行自适应噪声控制，以根据第一音频信号和第二音频信号输出估计信号。主降噪单元执行主噪声降低处理，以根据估计的信号和第二音频信号输出去噪声语音信号。优化单元执行优化处理，以根据去噪语音信号输出优化的语音信号。

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