发明授权
- 专利标题： Acoustic feedback suppression apparatus, microphone apparatus, amplifier apparatus, sound amplification system, and acoustic feedback suppression method
- 专利标题（中）： 声反馈抑制装置，麦克风装置，放大器装置，声音放大系统和声反馈抑制方法
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申请号： US13512175申请日： 2010-11-25
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公开(公告)号： US09031258B2公开(公告)日： 2015-05-12
- 发明人: Ryosuke Kitago , Yuji Kawasaki , Keiji Yamahai
- 申请人： Ryosuke Kitago , Yuji Kawasaki , Keiji Yamahai
- 申请人地址： JP Osaka
- 专利权人： Panasonic Intellectual Property Management Co., Ltd.
- 当前专利权人： Panasonic Intellectual Property Management Co., Ltd.
- 当前专利权人地址： JP Osaka
- 代理机构： Greenblum & Bernstein, P.L.C.
- 优先权： JP2009-271186 20091130
- 国际申请： PCT/JP2010/006891 WO 20101125
- 国际公布： WO2011/065003 WO 20110603
- 主分类号： H04B15/00
- IPC分类号： H04B15/00 ; H04R3/02
摘要：
An acoustic feedback suppression apparatus includes an amplitude measurement section for measuring the amplitude of a sound signal input from a microphone, an amplitude attenuation section for attenuating the amplitude of a sound signal output to a speaker, and an acoustic feedback determination section for determining whether or not acoustic feedback is occurring based on the sound signal input from the microphone. If it is determined that acoustic feedback is occurring, a sound-deadening control section enables sound-deadening control so that the amplitude of the sound signal output to the speaker is attenuated to a sound-deadening level. A sound-deadening release section releases the sound-deadening control if the amplitude of the sound signal input from the microphone is more than specified threshold amplitude and if it is determined that acoustic feedback is not occurring while the sound-deadening control is conducted.
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