Single-channel voice enhancement method and device, storage medium and terminal
A voice enhancement, single-channel technology, used in voice analysis, instruments, etc., can solve problems such as affecting the quality of voice calls, unsatisfactory, and poor noise reduction effect, so as to improve subjective experience, enhance significantly, and suppress non-stationary noise. Effect
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[0038] As mentioned in the background art, when people use mobile devices (such as mobile phones, telephone watches) to make daily calls, they are often exposed to noisy background environments, and most of these noises are statistically non-stationary noises.
[0039] Traditional voice enhancement technology usually uses the voice activity detection (Voice Activity Detection, referred to as VAD) method to determine whether there is voice in each frame signal in the time domain, that is, to identify the voice frame and the pure noise frame from a noisy voice signal. The algorithm only estimates and updates the noise in the pure noise frame judged by VAD, and performs noise reduction in the speech frame according to the estimated noise spectrum.
[0040] This method of speech enhancement is effective for stationary noise that does not vary much. But for non-stationary noise, since the noise may change greatly in the speech frame, the noise spectrum estimated in the pure noise f...
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