Adaptive microphone array system and its voice signal processing method
A microphone array, voice signal technology, applied in voice analysis, instruments, etc., can solve the problem of reducing the effective voice signal amplitude, and achieve the effect of the best filtering and denoising effect
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[0048] In order to make the purpose, technical solutions and beneficial effects of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0049] In the adaptive microphone array system and its speech signal processing method of the present invention, by adding an adaptive filter coefficient update control module in the microphone array system, it is possible to control whether the adaptive filter coefficients are updated or to use when the adaptive filter coefficients are updated. The step size value, thereby avoiding the adaptive first-order differential microphone array system in the prior art, when the noise component contained in the signal from the rear is comparable to or much smaller than the speech component in the signal from the front , appears to reduce the effective speech signal amplitude and introduce speech distortion side effects.
[0050] see image 3 ,...
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