Audio encoder and decoder and methods for encoding and decoding an audio signal

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United States of America Patent

PATENT NO 8977542
APP PUB NO 20130110506A1
SERIAL NO

13808428

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Abstract

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The present invention relates to a frequency domain based method of encoding and decoding an audio signal, wherein an adaptive spectral code book is updated with synthesized frequency domain representations of a time domain signal segment. A frequency analysis is performed of a received time domain signal segment in order to obtain a frequency domain representation, and the adaptive spectral code book is searched for a first approximation of the frequency domain representation. A fixed spectral code book is searched for an approximation of the residual frequency representation. A synthesized frequency domain representation may be generated from the two approximations.

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Patent Owner(s)

Patent OwnerAddress
TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)164 83 STOCKHOLM

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bruhn, Stefan Sollentuna, SE 104 1009
Norvell, Erik Stockholm, SE 61 263
Pobloth, Harald Täby, SE 20 106

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