Title :
Multiple length adaptive windowing of audio signals
Author :
Vanelli-Coralli, A. ; Corazza, G.E. ; Orsini, A.
Author_Institution :
Dept. of Electron., Comput. Sci. & Syst., Bologna Univ., Italy
fDate :
7/8/1999 12:00:00 AM
Abstract :
Audio coders generally operate on a per-frame basis to tackle signal non-stationarity. The choice of frame length is crucial to system performance since it trades off coding efficiency and pre-echo avoidance. A new algorithm based on multiple length adaptive windowing is proposed as an enhanced front-end for audio coders. Overhead reductions in excess of 40% are reported
Keywords :
adaptive signal processing; audio coding; audio coders; audio signals; coding efficiency; enhanced front-end; frame length; multiple length adaptive windowing; overhead reductions; pre-echo avoidance; signal nonstationarity; system performance;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19990832
