2006•Journal of Anqing Teachers CollegeRequires access

Transform Coding Algorithm of AC-3 Digital Audio Compression

Lin Chun-fang

Abstract

Transform coding is an important part of audio compression.In this article,the author presents the transform coding technique of AC-3 digital audio compression standard,which includes modified discrete cosine transform and its inverse transform(MDCT IMDCT),time,domain aliasing cancellation(TDAC)and adaptive window selection.The derivation of recursive architecture for MDCT and IMDCT is given in detail.

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Available abstract

Key concepts: Lapped transform, Discrete cosine transform, Transform coding, Modified discrete cosine transform, Sub-band coding, Computer science, Speech coding, Algorithm