Parametric stereo coder with only MDCT domain computations

Author

Suresh, K. ; Sreenivas, T.V.

Author_Institution

ECE Dept., Coll. of Eng., Thiruvananthapuram, Thiruvananthapuram, India

fYear

2009

fDate

14-17 Dec. 2009

Firstpage

61

Lastpage

64

Abstract

A parametric stereo coder in the MDCT domain is introduced in this work. Psychoacoustic modeling, parameter estimation and stereo synthesis are implemented in the MDCT domain. The encoder requires only MDCT domain computations and hence results in lower computational complexity. In addition, a low-complexity bit allocation algorithm is used for adaptive quantization of the MDCT coefficients. Perceptual evaluation shows that the proposed audio coder performance is comparable with that of MPEG-2 AAC coder with lower complexity.

Keywords

audio coding; computational complexity; discrete cosine transforms; parameter estimation; quantisation (signal); stereo image processing; MDCT domain computations; MPEG-2 AAC coder; adaptive quantization; bit allocation; computational complexity; modified cosine transform; parameter estimation; parametric stereo coder; psychoacoustic modeling; stereo synthesis; Acceleration; Computer displays; Computer science; Dynamic programming; Image resolution; Interpolation; Laplace equations; Particle measurements; Performance loss; Size measurement; audio coding; parametric coding; perceptual coding;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing and Information Technology (ISSPIT), 2009 IEEE International Symposium on

Conference_Location

Ajman

Print_ISBN

978-1-4244-5949-0

Type

conf

DOI

10.1109/ISSPIT.2009.5407482

Filename

5407482