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.
|頁（從 - 到）||II552-II555|
|期刊||Proceedings - IEEE International Symposium on Circuits and Systems|
|出版狀態||已出版 - 2003|
|事件||Proceedings of the 2003 IEEE International Symposium on Circuits and Systems - Bangkok, Thailand|
持續時間: 25 5月 2003 → 28 5月 2003