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Title
An Apparatus and a Method for Decoding an Encoded Audio Signal
Date Issued
2010
Author(s)
Neuendorf, M.
Grill, B.
Kraemer, U.
Multrus, M.
Popp, H.
Rettelbach, N.
Nagel, F.
Lohwasser, M.
Gayer, M.
Jander, M.
Bacigalupo, V.
Patent No
20080079841
20080103820
Abstract
An apparatus for decoding (100) an encoded audio signal (102). A first decoder (110a) decodes a first portion (104a) in accordance with a first decoding algorithm for a first time portion of the encoded signal (102) to obtain a first decoded signal (114a). A second decoder (110b) decodes a second portion (104b) in accordance with a second decoding algorithm for a second time portion of the encoded signal (102) to obtain a second decoded signal (114b). A BWE module (130) has a controllable crossover frequency (fx) and is configured for performing a bandwidth extension algorithm using the first decoded signal (114a) and BWE parameters (106) for the first portion (104a), and for performing a bandwidth extension algorithm using the second decoded signal (114b) and the bandwidth extension parameters (106) for the second portion (104b). A controller (140) controls the crossover frequency (fx) for the BWE module (130) in accordance with a coding mode information (108).
Language
en
Patenprio
US 20080079841 P: 20080711