DocumentCode :
416997
Title :
Audio signal compression via sampled-data control theory
Author :
Ashida, Shinjiro ; Nagahara, Masaaki ; Yamamoto, Yutaka
Author_Institution :
Graduate Sch. of Inf., Kyoto Univ., Japan
Volume :
2
fYear :
2003
fDate :
4-6 Aug. 2003
Firstpage :
1744
Abstract :
The paper proposes a new digital audio coding method. This method combines subband-coding with an interpolater which is designed by using sampled-data H/sup /spl infin// control theory. This method is not only simpler to compute than the conventional one, but also takes account of the analog performance. In this system, the complicated procedures are frequency decomposition and bit allocation. For decomposing the frequency, various efficient filter banks are proposed and for signal reconstruction FFT (fast Fourier transform) is used. Moreover, a new bit-allocation method is proposed, which is simpler than the conventional method, MPEG-1 Audio. A design example is presented to show the advantages of the present method.
Keywords :
H/sup /spl infin// control; audio coding; fast Fourier transforms; filtering theory; sampled data systems; FFT; MPEG-1 audio; Moving Picture Experts Group; audio signal compression; bit allocation; digital audio coding method; fast Fourier transform; filter banks; frequency decomposition; interpolater; sampled data H/sup /spl infin//control theory; subband coding;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
SICE 2003 Annual Conference
Conference_Location :
Fukui, Japan
Print_ISBN :
0-7803-8352-4
Type :
conf
Filename :
1324240
Link To Document :
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