Title :
New window-switching criterion of audio compression
Author :
Zhaorong, Hou ; Weibei, Dou ; Zaiwang, Dong
Author_Institution :
Dept. of Electron. Eng., Tsinghua Univ., Beijing, China
Abstract :
The ERIC (energy ramp in critical-band) criterion for window switching in perceptual audio coding is proposed. This new criterion can effectively distinguish real burst signals from stationary signals with high perceptual entropy. Therefore, comparing with the perceptual entropy criterion used in the MPEG standard, the possibility of misjudgment of the window types is reduced. It results in some improvements on both the audio quality and the coding efficiency
Keywords :
audio coding; entropy; hearing; MPEG standard; audio compression; audio quality; burst signal; coding efficiency; critical-band; energy ramp; perceptual audio coding; perceptual entropy; window-switching criterion; Audio coding; Audio compression; Communication switching; Digital communication; Entropy; Equations; Frequency; Power engineering and energy; Signal resolution; Transform coding;
Conference_Titel :
Multimedia Signal Processing, 2001 IEEE Fourth Workshop on
Conference_Location :
Cannes
Print_ISBN :
0-7803-7025-2
DOI :
10.1109/MMSP.2001.962753
