Speech coding apparatus, speech decoding apparatus, speech...

Details Speech coding apparatus, speech decoding apparatus, speech... Speech coding apparatus, speech decoding apparatus, speech...

G - Physics

10

L

G10L 19/06 (2006.01) G10L 19/00 (2006.01) G10L 9/14 (1995.01) G10L 5/02 (1995.01) G10L 9/00 (1995.01)

Patent

CA 2160749

A speech coding and decoding apparatus for improving the quality of synthesized speech. A coding portion includes a filter for adding a short-term phase amplitude characteristic to an excitation signal, and a coding circuit for quantizing and coding a phase amplitude characteristic. A decoding portion includes a decoding circuit for decoding the coded phase amplitude characteristic, and a filter for adding the same phase amplitude characteristic as that in the coding portion. Thus, it is possible to synthesize high-quality speech with good reproducibility of the phase amplitude characteristic of an excitation signal.

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