Title :
Wavelet packet based scalable audio coding
Author :
Kudumakis, Panos E. ; Sandler, Mark B.
Author_Institution :
Dept. of Electron. & Electr. Eng., King´´s Coll., London, UK
Abstract :
Scalability, a well known concept in video coding, has only recently been introduced to audio coding. In this paper, a novel approach to a two-stage wavelet packet based scalable audio coding system is presented. Two different structures have been designed and implemented, one in the time-domain, and its dual in the wavelet-domain; these are compared with an MPEG based scalable codec. Results at different bit-rates are shown, while trade-offs and limitations together with future developments for further reduced bit-rates are discussed
Keywords :
Hi-Fi equipment; audio coding; codecs; wavelet transforms; bit-rate reduction; scalable audio coding; time-domain implementation; wavelet packet based audio coding; wavelet-domain implementation; Audio coding; Bit rate; Codecs; Decoding; Entropy; Frequency; Scalability; Time domain analysis; Video coding; Wavelet packets;
Conference_Titel :
Circuits and Systems, 1996. ISCAS '96., Connecting the World., 1996 IEEE International Symposium on
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-3073-0
DOI :
10.1109/ISCAS.1996.540347
