Study on Algorithms of Low Bit Rate Hi-Fi Audio Coding Based on Wavelet Transform and Psychoacoustic Model
MA Hong-fe · Dianzi xuebao · 2000
The Problem of audio coding is to achieve a low bit rate in the digital representation of an actio signal with minimum perceived loss of quality, A Hi-Fi audio coding algorithm based on orthogonal Wavelet transform, psychoacoustic model and adaptive bit allocation is designed. The 1411.2kbit/s stereo Hi-Fi audio signals can be compressed to the bit late as low as 32kbit/s with good audio quality.