Method and device for discriminating voiced and unvoiced sounds

Details Method and device for discriminating voiced and unvoiced sounds Method and device for discriminating voiced and unvoiced sounds

1993-04-14

1997-09-02

MacDonald, Allen R.

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

704208, G10L 900

Patent

active

056640528

ABSTRACT:
A method and a device for discriminating a voiced sound from an unvoiced sound or background noise in speech signals are disclosed. Each block or frame of input speech signals is divided into plural sub-blocks and the standard deviation, effective value or the peak value is detected in a detection unit for detecting statistical characteristics from one sub-block to another. A bias detection unit detects a bias on the time scale of the standard deviation, effective value or the peak value to decide whether the speech signals are voiced or unvoiced from one block to another.

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IEEE Transactions On Acoustics, Speech and Signal Processing, vol. 24, No. 3, Jun., 1976, New York US, pp. 201-212, Atal, Rabiner, "A Pattern Recognition Approach to Voiced-Unvoiced-Silence Classification With Application To Speech Recognition" pp. 203-206, Sec. II, Figs. 1-6.
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IEEE Transactions on Acoustics, Speech and Signal Processing, vol. 28, No. 5, Oct. 1980, New York US, pp. 550-561, Cox, et. al. "Nonparametric Rank-Order Statistics Applied to Robust Voiced-Unvoiced-Silence Classification", pp. 556-557, Sec. V, VI A.

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