Methods and apparatus for detecting harmonic structure in a wave

Details Methods and apparatus for detecting harmonic structure in a wave Methods and apparatus for detecting harmonic structure in a wave

1996-01-25

1998-09-15

Dorvil, Richemond

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

704208, 704217, G10L 108

Patent

active

058094539

ABSTRACT:
The periodicity of a signal from a voice channel is determined by sampling the signal, computing the log power spectrum, optionally thresholding and differencing the power spectrum, and then performing an autocorrelation function of limited order to confine the search for periodicity to spans of up to about 400 Hz to 500 Hz.

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patent: 5574823 (1996-11-01), Hassanein et al.
E. Chilton et al., "The Spectral Autocorrelation Applied to the Linear Preduction Residual of Speech for Robust Pitch Detection", 1988 IEEE, p. 358, Apr. 1988.

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