Howling suppression method based on feedback signal spectrum estimation
A feedback signal and spectrum estimation technology, applied in transducer circuits, sensors, electrical components, etc., can solve problems such as slow convergence, poor robustness, and short-term howling
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[0046]The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0047] The object of the present invention is to propose a howling suppression method with good robustness, fast convergence and tracking speed, and effective suppression of howling while ensuring that voice quality is not lost.
[0048] In order to achieve the above object, the technical scheme that the present invention takes is as follows:
[0049] A howling suppression method based on feedback signal spectrum estimation, the specific steps include:
[0050] Step 1): Perform windowing processing and Fourier transform on the collected microphone signal and loudspeaker output signal respectively, and transform the time domain signal into the frequency domain;
[0051] Step 2): divide the cross power spectrum of the smooth microphone signal and the speaker output signal by the power spectrum of the smooth speaker output signal to obtain the m...
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