Title :
Advanced software implementation of MPEG-4 AAC audio encoder
Author :
Domazet, Danijel ; Kovac, Mario
Author_Institution :
Fac. of Electr. Eng. & Comput., Zagreb Univ., Croatia
Abstract :
MPEG-4 AAC audio encoder is developed. AAC main and AAC low complexity object types, defined as part of main profile in general audio part of ISO/IEC 14496-3 (MPEG-4) standard, are implemented. Encoder targets high-quality, wideband, complex audio. Encoder was carefully designed to respect present accomplishments in audio coding (standardized in MPEG-4). At the same time, several implementation novelties were introduced. Encoder achieves ´perceptible but not annoying´ 44.1 kHz audio quality at bit rate 64 kb/s/ch, while satisfying quality is accomplished at 48 kb/s/ch.
Keywords :
IEC standards; ISO standards; audio coding; code standards; telecommunication computing; 44.1 kHz; IEC standard; ISO standard; MPEG-4 audio encoder design; advanced audio coding low complexity object type; advanced audio coding main; advanced software implementation; complex audio; high-quality audio; wideband audio; Detection algorithms; Filter bank; Frequency; IEC standards; ISO standards; Image coding; MPEG 4 Standard; Psychology; Shape; Transient analysis;
Conference_Titel :
Video/Image Processing and Multimedia Communications, 2003. 4th EURASIP Conference focused on
Print_ISBN :
953-184-054-7
DOI :
10.1109/VIPMC.2003.1220542
