3 Definitions and abbreviations

26.4103GPPEnhanced aacPlus general audio codecFloating-point ANSI-C codeGeneral audio codec audio processing functionsRelease 17TS

3.1 Definitions

For the purposes of the present document, the terms and definitions given in TS 26.401 [1], TS 26.403 [2], TS 26.404 [3], TS 26.405 [4] and TS 26.402 [9] apply.

3.2 Abbreviations

For the purposes of the present document, the following abbreviations apply:

AAC Advanced Audio Coding

aacPlus Combination of MPEG-4 AAC and MPEG-4 Bandwidth extension (SBR)

Enhanced aacPlus Combination of MPEG-4 AAC, MPEG-4 Bandwidth extension (SBR) and MPEG-4 Parametric Stereo

MDCT Modified Discrete Cosine Transform

QMF Quadrature Mirror Filter

SBR Spectral Band Replication

ANSI American National Standards Institute

GSM Global System for Mobile communications

I/O Input/Output

RAM Random Access Memory

ROM Read Only Memory