Psychoacoustic Model and its Application to MP3 Encoding
Rangding Wang · Journal of Ningbo University · 2010
Psychoacoustic model involves core technology in perceptual audio encoding,and it directly affects the encoding quality and compress radio.This paper first introduces the basic principles of psychoacoustic, mainly including the absolute threshold of hearing,masking effect and critical bands.Then,combining with mathematical model of psychoacoustic,the algorithmic process in accordance with mp3 standard procedure modules is analyzed.In the end,the pre-echo producing mechanism and reducing method in mp3 encoding are described with a given number of experiments.