Speech coder that determines pulsed parameters
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United States of America Patent
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Apr 30, 2013
Grant Date -
Apr 12, 2012
app pub date -
Oct 7, 2011
filing date -
Dec 22, 2006
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Abstract
Methods for estimating speech model parameters are disclosed. For pulsed parameter estimation, a speech signal is divided into multiple frequency bands or channels using bandpass filters. Channel processing reduces sensitivity to pole magnitudes and frequencies and reduces impulse response time duration to improve pulse location and strength estimation performance. These methods are useful for high quality speech coding and reproduction at various bit rates for applications such as satellite and cellular voice communication.
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