Data processing: speech signal processing – linguistics – language – Speech signal processing – For storage or transmission
Reexamination Certificate
2006-01-10
2006-01-10
McFadden, Susan (Department: 2655)
Data processing: speech signal processing, linguistics, language
Speech signal processing
For storage or transmission
C704S207000, C704S208000
Reexamination Certificate
active
06985857
ABSTRACT:
A perceptually weighted speech coder system samples a speech signal and determines its pitch. The speech signal is characterized as fully voiced, partially voiced or weakly voiced. A Lloyd-Max quantizer is trained with the pitch values of those speech signals characterized as being substantially fully voiced. The quantizer quantizes the trained fully voiced pitch values and the pitch values of the non-fully voiced speech signals. The quantizer can also quantize gain values in a similar manner. Sampling is increased for fully-voice signals to improve coding accuracy. This limits application to non-real time speech storage. Mixed excitation is used to synthesize the speech signal
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Mancini Brian M.
McFadden Susan
Sked Matthew J.
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