发明申请
US20060093173A1 Method and signal processor for reducing feedback in an audio system
审中-公开
用于减少音频系统中的反馈的方法和信号处理器
- 专利标题： Method and signal processor for reducing feedback in an audio system
- 专利标题（中）： 用于减少音频系统中的反馈的方法和信号处理器
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申请号： US11251457申请日： 2005-10-14
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公开(公告)号： US20060093173A1公开(公告)日： 2006-05-04
- 发明人: Volkmar Hamacher , Ulrich Kornagel
- 申请人： Volkmar Hamacher , Ulrich Kornagel
- 优先权： DE102004050304.4 20041014
- 主分类号： H04R25/00
- IPC分类号： H04R25/00 ; A61F11/06
摘要：
Feedback in audio systems and particularly in hearing aids needs to be detected more reliably, so that it can be filtered as appropriate. For this purpose, the invention provides for the output signal from a signal processing section is modified using a modulation unit to produce a modulated output signal. This modulation must be inaudible to the hearing aid wearer. The modulated signal is fed back via a feedback path to the microphone of the hearing aid. A feedback detector detects the signal modulation and accordingly controls an adaptive filter to compensate for the feedback.
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