Speaker verification system

Details Speaker verification system Speaker verification system

1990-11-08

1992-06-09

Kemeny, Emanuel S.

Electrical audio signal processing systems and devices

One-way audio signal program distribution

Public address system

381 43, 395 2, G10L 500

Patent

active

051214288

ABSTRACT:
In a speaker verification system, a detecting part detects a speech section of an input speech signal by using a time-series acoustic parameters thereof. A segmentation part calculates individuality information for segmentation by using the time-series acoustic parameters within the speech section, and segments the input speech section into a plurality of blocks based on the individuality information. A feature extracting part extracts features of an unknown speaker for every segmented block by using the time-series acoustic parameters. A distance calculating part calculates a distance between the features of the speaker extracted by the feature extracting part and reference features stored in a memory. A decision part makes a decision as to whether or not the unknown speaker is a real speaker by comparing the calculated distance with a predetermined threshold value. Segmentation is made by calculating a primary moment of the spectrum, over a block, and finding successive values which satisfy a predetermined criterion.

REFERENCES:
patent: 4336421 (1982-06-01), Welch et al.
"Talker-Recognition Procedure Based on Analysis of Variance", Pruzansky et al, Jul. 8, 1964, pp. 2041-2045 & 2047.
"A Scheme for Speech Processing In Automatic Speaker Verification", Das et al, Mar. 1971, pp. 32-43.
"An Improved Autocorrelation Pitch Detector and Its Evaluation with Chinese", Gao et al, Mar. 1982, pp. 157 & 158.
"Digital Processing of Speech Signals", Rabiner et al, 1987, pp. 150-159.

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