Active noise reduction device and active noise reduction method

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专利权人:

Ltd.;Panasonic Intellectual Property Management Co.

发明人:

Mitsuhiro Tani,Toshiyuki Funayama,Mitsuru Kaitou

申请号：

US14391530

公开号：

US09596540B2

申请日:

2013.06.25

申请国别(地区):

US

年份:

2017

代理人:

摘要：

An active noise reduction device is used with a secondary noise source that generates a secondary noise and an error signal source that outputs an error signal corresponding to a residual sound caused by interference between the secondary noise and a noise. A μ-adjustment unit calculates a step-size parameter for updating a filter coefficient of an adaptive filter by multiplying a standard step-size parameter by a ratio of a standard representative input value corresponding to amplitude of a signal to a representative input value corresponding to the amplitude of the signal.

来源网站：

中国工程科技知识中心

来源网址：

http://www.ckcest.cn/home/