Speech feature extraction system

Details Speech feature extraction system Speech feature extraction system

2006-03-14

2006-03-14

Knepper, David D. (Department: 2654)

Data processing: speech signal processing, linguistics, language

Speech signal processing

Recognition

C704S205000, C704S206000, C708S300000

Reexamination Certificate

active

07013274

ABSTRACT:
The present invention provides a speech feature extraction system suitable for use in a speech recognition system or other voice processing system that extracts features related to the frequency and amplitude characteristics of an input speech signal using a plurality of complex band pass filters and processing the outputs of adjacent band pass filters. The band pass filters can be arranged according to linear, logarithmic or mel-scales, or a combination thereof.

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patent: 4221934 (1980-09-01), Schiff
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patent: 4660216 (1987-04-01), Claasen et al.
patent: 4729112 (1988-03-01), Millar
Jelinek, Frederick, “Hidden Markov Models,”Statistical Methods for Speech Recognition, Chapter 2, The MIT Press: pp. 15-37 (1997).
Qinnell, Richard A., “Speech Recognition: No Longer a Dream, But Still a Challenge,”EDN Magazine: pp. 41-46 (Jan. 19, 1995).

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