Speaker recognition with glottal pulse-shapes

Details Speaker recognition with glottal pulse-shapes Speaker recognition with glottal pulse-shapes

1990-03-15

1992-02-25

Shaw, Dale M.

Electrical audio signal processing systems and devices

One-way audio signal program distribution

Public address system

381 41, G10B 906

Patent

active

050919482

ABSTRACT:
A speaker recognition system including a voiced sound detector for detecting a voiced sound sample from an input utterance of a speaker. A prefiltering circuit derives from the voiced sound sample a compensation parameter indicating a decaying characteristics of a high frequency component of the voiced sound sample and compensates for the voiced sound sample in accordance with the compensation parameter. An estimation circuit is provided for estimating a glottal excitation source pulse of the vocal tract system of the speaker from the compensated voiced sound sample. A glottal pulse-shape is simulated from the estimated glottal excitation source pulse using the compensation parameter detected by the prefiltering circuit. The simulated glottal pulse-shape is analyzed to determine vocal features of the speaker, and a decision is made whether the determined features coincide with reference features stored in a pattern memory.

REFERENCES:
patent: 3456080 (1969-07-01), Torre
patent: 3466394 (1969-09-01), French
patent: 3700815 (1972-10-01), Doddington et al.
patent: 3989896 (1976-11-01), Reitboeck
patent: 4403114 (1983-09-01), Sakoe
patent: 4581755 (1986-04-01), Sakoe
Rabiner et al., "An Algorithm for Determining the Endpoints of Isolated Utterances", Bell System.

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