Title :
Optimum subband filter bank design and compensation in presence of quantizers
Author :
Park, Kyusik ; Haddad, R.A.
Author_Institution :
Dept. of Electr. Eng., Polytechnic Univ., Brooklyn, NY, USA
Abstract :
Optimum M-band subband codec structure in the presence of PDF-optimized quantizers is proposed. Using the polyphase decomposition of analysis/synthesis filter bank(FB), we derive the formula for mean square error(MSE) at the reconstructed output. We show that the optimum M-band FB structure can be designed by a suitable choice of a simple scalar compensator following each quantizer. Specific design examples have been developed for two different classes of filter banks, the paraunitary FB and the biorthogonal FB for the 2 channel case
Keywords :
codecs; digital filters; encoding; filtering theory; quantisation (signal); MSE; PDF optimized quantizers; analysis/synthesis filter bank; biorthogonal filter bank; mean square error; optimum subband filter bank compensation; optimum subband filter bank design; paraunitary filter bank; polyphase decomposition; quantizer; reconstructed output; scalar compensator; subband codec; Codecs; Covariance matrix; Data compression; Density functional theory; Design optimization; Filter bank; Power generation; Quantization; Signal design; Signal synthesis;
Conference_Titel :
Signals, Systems and Computers, 1993. 1993 Conference Record of The Twenty-Seventh Asilomar Conference on
Conference_Location :
Pacific Grove, CA
Print_ISBN :
0-8186-4120-7
DOI :
10.1109/ACSSC.1993.342474
