Dual-microphone-based speech enhancement device and speech enhancement method
A voice enhancement and dual-microphone technology, applied in voice analysis, instruments, etc., can solve problems such as voice distortion and limited noise reduction effect
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[0104] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0105] see Figure 1 to Figure 3 , the double-microphone-based speech enhancement device provided by the present invention, the device includes:
[0106] The digital microphone array module is used to receive the time-domain noisy speech digital signal and output the received time-domain noisy speech digital signal, which includes a first digital microphone and a second digital microphone;
[0107] The first pulse density modulation decoder module is used for framing, downsampling and filtering the time-domain noisy voice digital signal to form a preliminary downsampling rate digital signal, which includes a filter, such as an N-stage comb filter;
[0108] The directivity forming module is used to form the directivity of the preliminary downsampling rate digital signal to form a preliminary noise-reduced directivity output signal;
[0109] The second ...
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