Title :
Parametric stereo coder with only MDCT domain computations
Author :
Suresh, K. ; Sreenivas, T.V.
Author_Institution :
ECE Dept., Coll. of Eng., Thiruvananthapuram, Thiruvananthapuram, India
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;
Conference_Titel :
Signal Processing and Information Technology (ISSPIT), 2009 IEEE International Symposium on
Conference_Location :
Ajman
Print_ISBN :
978-1-4244-5949-0
DOI :
10.1109/ISSPIT.2009.5407482
