Speech analysis method

Details Speech analysis method Speech analysis method

1989-07-05

1991-01-01

Kemeny, Emanuel S.

Electrical audio signal processing systems and devices

One-way audio signal program distribution

Public address system

381 41, G10L 500

Patent

active

049824333

ABSTRACT:
A speech analysis method which includes the steps of detecting a maximum-level position in that portion of an input speech signal which exists in a period equal to the pitch period of the input speech signal from a predetermined one of periodically-generated timing pulses, tracing the speech signal from the maximum-level position in a time reversing direction to find a zero-crossing point where the level of the traced signal is first reduced to zero, extracting a one-pitch signal which starts from the zero-crossing point and has the duration equal to the pitch period of the input speech signal, from the speech signal, and carrying out Fourier transform for the one-pitch signal to obtain a spectrum of the input speech signal.

REFERENCES:
patent: 4852169 (1989-07-01), Veeneman
patent: 4885790 (1989-12-01), McAulay

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