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Speech probability presence modifier improving log-mmse based noise suppression performance
Speech probability presence modifier improving log-mmse based noise suppression performance
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机译:语音概率存在修饰符可改善基于对数毫米的噪声抑制性能
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摘要
Acoustic noise in an audio signal is reduced by calculating a speech probability presence (SPP) factor using minimum mean square error (MMSE). The SPP factor, which has a value typically ranging between zero and one, is modified or warped responsive to a value obtained from the evaluation of a sigmoid function, the shape of which is determined by a signal-to-noise ratio (SNR), which is obtained by an evaluation of the signal energy and noise energy output from a microphone over time.
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