Speech recognition system using normalized voiced segment...

Details Speech recognition system using normalized voiced segment... Speech recognition system using normalized voiced segment...

2007-06-19

2007-06-19

{hacek over (S)}mits, Talivaldis Ivars (Department: 2626)

Data processing: speech signal processing, linguistics, language

Speech signal processing

Recognition

C704S208000, C704S254000

Reexamination Certificate

active

10094696

ABSTRACT:
Computer comparison of one or more dictionary entries with a sound record of a human utterance to determine whether and where each dictionary entry is contained within the sound record. The record is segmented, and for each vocalized segment a spectrogram is obtained, and for other segments symbolic and numeric data are obtained. The spectrogram of a vocalized segment is then processed using a method selected from a group consisting of a triple time transform, a triple frequency transform, a linear-piecewise-linear transform, and combinations thereof, to decrease noise and to eliminate variations in pronunciation. Each entry in the dictionary is then compared with every sequence of segments of substantially the same length in the sound record. The comparison takes into account the formant profiles within each vocalized segment and symbolic and numeric data for other segments are obtained in the record and in the dictionary entries.

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