Voice signal processing device

Details Voice signal processing device Voice signal processing device

1991-01-03

1993-03-16

Kemeny, Emanuel S.

Electrical audio signal processing systems and devices

One-way audio signal program distribution

Public address system

381 43, G10L 500

Patent

active

051951380

ABSTRACT:
A cepstrum calculating device obtains a cepstrum of a voice signal and a mean-value calculation device cepstrum means output. A threshold setting device sets a voice detection threshold level on the basis of the cepstrum mean-value output. A cepstrum addition section adds a cepstrum value exceeding the cepstrum mean-value. A comparator compares the cepstrum output from the cepstrum addition section with the threshold output signal from the threshold setting device, thereby to output a voice-detection signal.

REFERENCES:
patent: 4239936 (1980-12-01), Sakoe
The Journal of the Acoustical Society of America, vol. 78, No. 5, Nov. 1985, pp. 1671-1674, J. T. Sims.
The Journal of the Acoustical Society of America, vol. 41, No. 2, 1967, pp. 293-309, A. M. Noll.
Nachrichtentechnische Zeitschrift (NTZ) vol. 26, No. 7, pp. 312-316, Timme et al.

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