DocumentCode
2871136
Title
IntMDCT - A link between perceptual and lossless audio coding
Author
Geiger, Ralf ; Herre, Jurgen ; Koller, Jurgen ; Brandenburg, Karlheinz
Author_Institution
Fraunhofer AEMT, Ilmenau, Germany
Volume
2
fYear
2002
fDate
13-17 May 2002
Abstract
The Modified Discrete Cosine Transform (MDCT) is widely used in modem perceptual audio coding schemes. In this paper we present an integer approximation of this lapped transform, called IntMDCT, which is derived from the MDCT using the lifting scheme. This reversible integer transform inherits most of the attractive properties of the MDCT, exhibiting a good spectral representation of the audio signal, critical sampling and overlapping of blocks. This makes the IntMDCT well suited for both lossless audio coding as well as for combined perceptual and lossless audio coding. A scalable system is presented providing a lossless enhancement of perceptual audio coding schemes, such as MPEG-2 AAC.
Keywords
Art; Entropy coding; Transforms;
fLanguage
English
Publisher
ieee
Conference_Titel
Acoustics, Speech, and Signal Processing (ICASSP), 2002 IEEE International Conference on
Conference_Location
Orlando, FL, USA
ISSN
1520-6149
Print_ISBN
0-7803-7402-9
Type
conf
DOI
10.1109/ICASSP.2002.5744976
Filename
5744976
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