Title :
On the pre-echo control method in transient signal coding of AVS audio
Author :
Zhang, Tao ; Wang, Wei ; He, Jialin
Author_Institution :
Sch. of Electron. & Inf. Eng., Tianjin Univ., Tianjin
Abstract :
The Audio and Video Coding Standard of China (AVS) uses multi-resolution analysis of frequency domain (MRAFD) to control pre-echo when coding transient signal. However, this technology complicates the implementation of encoder as well as decoders with more operation and higher computational precision. In this paper, a kind of gain control of time domain is used to encode transient signal instead of MRAFD. Compared with MRAFD, the new method greatly decreases the computational complexity of AVS audio encoder and decoder while the coding quality of the two methods is almost the same.
Keywords :
audio coding; computational complexity; frequency-domain analysis; AVS audio; Audio and Video Coding Standard of China; computational complexity; frequency domain multiresolution analysis; gain control; preecho control method; transient signal coding; Audio coding; Bit rate; Computational complexity; Decoding; Frequency domain analysis; Gain control; Phase change materials; Psychoacoustic models; Signal analysis; Transient analysis;
Conference_Titel :
Audio, Language and Image Processing, 2008. ICALIP 2008. International Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-1723-0
Electronic_ISBN :
978-1-4244-1724-7
DOI :
10.1109/ICALIP.2008.4590064
