Title :
The Analysis of VLC-Coded Efficiency Based on MPEG-I Layer III Audio
Author :
Tan, Jiaqiang ; Wang, Rangding
Author_Institution :
CKC Software Lab., Ningbo Univ., Ningbo
Abstract :
The multimedia bitstream is comprised of variable length codes (VLC) to a large extent. If data hiding is carried out in multimedia compressed domain, VLC are usually chosen as the hidden object. The VLC-coded efficiency is a key factor which can directly affect the method of data hiding. MPEG-I layer III (MP3) audio is chosen as analytical object in this paper. The VLC-coded rule is obtained by analyzing the VLC-coded efficiency of the MP3 audios. The process of variable length coding in MP3 audio can be understood further passing through the VLC-coded rule. At the same time, it also provides a favorable theoretical base for seeking for effective data hiding methods in MP3 audio compressed domain.
Keywords :
audio coding; data compression; multimedia systems; variable length codes; MP3 audio compressed domain; MPEG-I layer III audio; data hiding; multimedia bitstream; multimedia compressed domain; variable length codes; Code standards; Data encapsulation; Digital audio players; Encoding; Filter bank; Internet; Quantization; Sampling methods; Time frequency analysis; Transform coding;
Conference_Titel :
Cyberworlds, 2008 International Conference on
Conference_Location :
Hangzhou
Print_ISBN :
978-0-7695-3381-0
