Speech encoding method, speech decoding method and speech encodi

Details Speech encoding method, speech decoding method and speech encodi Speech encoding method, speech decoding method and speech encodi

1995-08-23

1998-05-05

MacDonald, Allen R.

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

704222, G10L 302, G10L 900

Patent

active

057490651

ABSTRACT:
A speech encoding/decoding method calculates a short-term prediction error of an input speech signal that is divided on a time axis into blocks, represents the short-term prediction residue by a synthesized sine wave and a noise and encodes a frequency spectrum of each of the synthesized sine wave and the noise to encode the speech signal. The speech encoding/decoding method decodes the speech signal on a block basis and finds a short-term prediction residue waveform by sine wave synthesis and noise synthesis of the encoded speech signal. The speech encoding/decoding method then synthesizes the time-axis waveform signal based on the short-term prediction residue waveform of the encoded speech signal.

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Haagen et al., " A 2.4 KBPS high Quality Speech Coder", ICASSP '91, pp. 589-592.

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