LPC-to-MELP transcoder
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United States of America Patent
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May 5, 2009
Grant Date -
Apr 19, 2007
app pub date -
Aug 31, 2006
filing date -
Apr 2, 2001
priority date (Note) -
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Abstract
A method for transcoding a bit stream encoded according to a linear predictive coding (LPC) standard to a bit stream encoded according to a mixed-excitation linear prediction (MELP) standard, including: decoding a bit stream into a first set of vocoder parameters compatible with the LPC standard; transforming the first set of vocoder parameters into a second set of vocoder parameters compatible with the MELP standard without converting the first set of vocoder parameters to an analog or digital waveform representation; and encoding the second set of vocoder parameters into a bit stream compatible with the MELP vocoder standard.
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