Multichannel Audio Compression : Performance Evaluation of Various Algorithms

ISBN-13: 9786202012201 / Angielski / Miękka / 2017 / 112 str.

Siti Aisyah Abdul Rashid; Teddy Surya Gunawan; Mira Kartiwi

Opis

Nowadays, many methods and algorithms have been proposed to improve the compression performance on multichannel audio. This book focuses on performance evaluation of various algorithms on multichannel audio compression. First, we identified and investigated current state-of-the-art audio compression algorithms, both lossless and lossy compression, which can handle mono, stereo, 5.1, and 7.1 multichannel audio. Out of various algorithms available, AC3, AAC, and Ogg have been selected as lossy compression algorithms, while FLAC and MPEG-4 ALS have been chosen as lossless compression algorithms. Two performance measure were used in the experiments, i.e. compression ratio and encoding time. The results showed that among three lossy audio compression algorithms, AC3 has the fastest encoding time while Ogg Vorbis has the highest compression ratio. Furthermore, between FLAC and MPEG-4 ALS, FLAC has faster encoding time and MPEG-4 ALS has higher compression ratio. Overall, in terms of encoding time and compression ratio, it has been found that FLAC is the fastest coder while Ogg Vorbis has the highest compression ratio among five encoders evaluated.

O autorze

@Siti Aisyah Abdul Rashid obtained her BEng in Communication Engineering from IIUM in 2016. @Teddy Surya Gunawan received his PhD degree from UNSW in 2007 and is currently an Associate Professor at IIUM. @Mira Kartiwi obtained her PhD from UOW in 2009 and is currently an Associate Professor at IIUM.