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1. 发明授权

US5140640A Noise cancellation system 失效
标题翻译：噪音消除系统
公开(公告)号：US5140640A
公开(公告)日：1992-08-18
申请号：US567269
申请日：1990-08-14
申请人： Daniel Graupe , Adam J. Efron
发明人： Daniel Graupe , Adam J. Efron
IPC分类号： G10K11/178
CPC分类号： G10K11/1782 , G10K2210/3011 , G10K2210/3012 , G10K2210/30351 , G10K2210/3045 , G10K2210/3216
摘要： This disclosure relates to a self-adaptive noise cancellation system that may be employed in a noise environment at the vicinity of an acoustic noise source to produce noise signals denoted as anti-noise signals that are directed towards a geometric region of the same environment and which counter the first acoustic noise source thus rendering the geometric region relatively quiet. The system monitors the acoustic noise source to identify its signal parameters thus retrieving the noise parameters that are required for the device to tune itself in order to cope with variations in the parameters of the noise source and to adapt its own anti-noise output to keep adequate noise cancellation in said geometric region in the face of the changes in the characteristics of the noise source, such as changes in power or in frequency spectrum of the noise source.
摘要翻译：本公开涉及一种自适应噪声消除系统，其可以在声学噪声源附近的噪声环境中采用，以产生被表示为针对相同环境的几何区域的抗噪声信号的噪声信号，以及哪个对抗第一声学噪声源，从而使几何区域相对安静。该系统监测声学噪声源以识别其信号参数，从而检索设备调谐自身所需的噪声参数，以便应对噪声源的参数的变化并使其自身的抗噪声输出保持面对噪声源的特性变化，例如噪声源的功率变化或频谱变化，在所述几何区域中适当的噪声消除。

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