Design of a low power psycho-acoustic model co-processor for MPEG-2/4 AAC LC stereo encoder

Tsung Han Tsai, Shih Way Huang, Liang Gee Chen

Research output: Contribution to journalConference articlepeer-review

6 Scopus citations

Abstract

A new design of Psycho-Acoustic Model in MPEG-2/4 AAC encoding is proposed. Differing from the conventional PC-based and DSP-based encoders, it was based on hybrid architectures. It was optimized at algorithmic and at architectural levels. At algorithmic level, MDCT-based PAM and fixed-coefficients were used to replace the original FFT-based PAM and spreading functions. At architectural level, the co-processor PAM design is proposed. The proposed design could be used in a real-time MPEG-2/4 AAC LC stereo encoder while maintaining CD quality below 30 MHz.

Original languageEnglish
Pages (from-to)II552-II555
JournalProceedings - IEEE International Symposium on Circuits and Systems
Volume2
StatePublished - 2003
EventProceedings of the 2003 IEEE International Symposium on Circuits and Systems - Bangkok, Thailand
Duration: 25 May 200328 May 2003

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