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Comparison of filterbanks for high quality audio coding

: Eberlein, E.; Herre, J.; Edler, B.; Brandenburg, K.

	Institute of Electrical and Electronics Engineers -IEEE-: IEEE International Symposium on Circuits and Systems 1992. Proceedings New York/N.Y.; Piscataway/N.J.: IEEE, 1992 ISBN: 0-7803-0593-0 ISBN: 0-7803-0594-9 ISBN: 0-7803-0595-7 pp.1336-1339 (Vol.3)
	International Symposium on Circuits and Systems (ISCAS) <25, 1992, San Diego/Calif.>

	English
	Conference Paper
	Fraunhofer IIS A ( IIS) ()
	data compression; Datenreduktion; filterbank; low bitrate audio coding; perceptual audio coding; psychoacoustic; Psychoakustik

Abstract
In the last years perceptual coding techniques have been applied successfully to high quality coding of digital audio signals. The basic perceptual coding system uses an analysis/synthesis system to map the time domain data into a number of frequency domain channels. A perceptual model is used to estimate the amount of noise shaping needed in order to avoiud any audible noise due to the quantization of the frequency domain data. Different filterbanks havbe been applied to perceptual coding. A comparison of different filterbanks shows that there is no performance penalty for hybrid filterbanks compared to other solutions.