웨이브테이블(wavetable) 방식의 악기음 합성을 위한 MPEG-1 오디오 부호화 알고리듬 기반의 효율적인 악기음 압축

Abstract

In this paper, an efficient data compression method based on MPEG-1 audio layer I algorithm is presented for reducing the memory requirement of the wavetable music synthesis. The proposed scheme improves the data compression rate by changing the MPEG-1 audio layer I algorithm to be a variable rate type coder, exploiting the fact that a block of contiguous subbands with bit allocation informations of zero occurs very often in high frequency region, and applying differential coding to scalefactor index after the attack region of sounds of each musical instrument.