Quantization of harmonic amplitudes representing speech

Details Quantization of harmonic amplitudes representing speech Quantization of harmonic amplitudes representing speech

1994-12-16

1997-05-13

Macdonald, Allen R.

395 215, G10L 302, G10L 900

Patent

active

056300115

ABSTRACT:
In a speech coding and decoding system, in which a timewise segment of an acoustic speech signal is represented by a frame of a data signal characterized by a fundamental frequency and spectral harmonics, a current frame is reconstructed using a set of prediction signals based on the number of spectral harmonics for the current frame and a preceding frame and reconstructed signal parameters characterizing the preceding frame. The number of spectral harmonics for the current and preceding frames are reconstructed from at least a pair of digitally encoded signals that are generated using error protection codes for all of their bits.

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