Parametric coding of an audio or speech signal
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United States of America Patent
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May 23, 2006
Grant Date -
Oct 24, 2002
app pub date -
Jan 14, 2002
filing date -
Jan 16, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An encoder includes a segmentation unit for segmenting an audio or speech signal into at least one segment and a calculation unit for calculating sinusoidal code data in the form of frequency and amplitude data of a given extension from the segment such that the extension approximates the segment for a given criterion. The calculation of the sinusoidal code data .theta..sub.k.sup.i, d.sub.j.sup.i and e.sub.j.sup.i for the segment x(n) is carried out according to the following extension {circumflex over (x)}:.times..times..times..times..times..function..times..function..THETA-..function..times..function..times..THETA..function..times. ##EQU00001##
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