Method and apparatus for extracting speech pitch

Details Method and apparatus for extracting speech pitch Method and apparatus for extracting speech pitch

1983-01-31

1987-03-24

Kemeny, E. S. Matt

Electrical audio signal processing systems and devices

One-way audio signal program distribution

Public address system

G10L 500

Patent

active

046530983

ABSTRACT:
A plurality of pitch period candidates are selected from a peak of correlation of a speech waveform in a current frame from which a pitch period is to be extracted, and a speech pitch is selected from the candidates by referring to a guide index which is precalculated based on pitch periods extracted in past frames. The guide index is an average of the pitch periods in the past frames.

REFERENCES:
patent: 3740476 (1973-06-01), Atal
patent: 3852535 (1974-12-01), Zurcher
patent: 3947638 (1976-05-01), Blankinship
patent: 4004096 (1977-01-01), Bauer et al.

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