期刊名称：International Journal on Computer Science and Engineering
印刷版ISSN：2229-5631
电子版ISSN：0975-3397
出版年度：2010
卷号：2
期号：4
页码：1340-1354
出版社：Engg Journals Publications
摘要：Audio compression algorithms are used to obtain compact digital representations of high-fidelity audio signals for the purpose of efficient transmission over larger distances and storage. This paper presents an audio coder for real-time mutimedia applications. This coder applies a discrete wavelet transform to decompose audio test files into subbands to eliminate redundant data using spectral and temporal masking properties. This architecture is combined with a psychoacoustic model characterised by an external and middle ear model as a first part and a dynamic Gammachirp filter as a second part whose connections are selected in order to come close to the critical bands of the ear. Experimental results show the best performance of this architecture.
关键词：Audio Compressiont; Discrete Wavelet Transform; Psychoacousic Model; External and Middle Ear Model; Dynamic Gammachirp Filter Bank;MUSHRA listening test
