Speech-rate modification for linear-prediction based analysis-by

Details Speech-rate modification for linear-prediction based analysis-by Speech-rate modification for linear-prediction based analysis-by

1994-04-14

1998-02-10

MacDonald, Allen R.

395 232, 395 294, G10L 302, G10L 900

Patent

active

057178232

ABSTRACT:
Synergy between operations performed by a speech-rate modification system and those operations performed in a speech coding system is exploited to provide a speech-rate modification system with reduced hardware requirements. The speech rate of an input signal is modified based on a signal representing a predetermined change in speech rate. The modified speech-rate signal is then filtered to generate a speech signal having increased short-term correlation. Modification of the input speech signal may be performed by inserting in the input speech signal a previous sequence of samples corresponding substantially to a pitch cycle. Alternatively, the input speech signal may be modified by removing from the input speech signal a sequence of samples corresponding substantially to a pitch cycle.

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