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Patent
Title
An Apparatus and a Method for Decoding an Encoded Audio Signal
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).
Inventor(s)
Neuendorf, M.
Grill, B.
Kraemer, U.
Multrus, M.
Popp, H.
Rettelbach, N.
Nagel, F.
Lohwasser, M.
Gayer, M.
Jander, M.
Bacigalupo, V.
Link to:
Patent Number
20080079841
20080103820
Publication Date
2010
Language
English