A priori SNR estimation and noise estimation for speech enhancement.

EURASIP J Adv Signal Process · 2016 · PMC5031741 · PMID 27729928

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However, the accuracy of VAD cannot be guaranteed in low-SNR and non-stationary noise environments since a sudden rise in the noise power may be misinterpreted as a speech onset; moreover, the delay of noise estimation may be significant when the duration of speech is very long.

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