The coding gain of multiplexed wavelet transforms

Author

Evangelista, Gianpaolo

Author_Institution

Dept. of Phys. Sci., Naples Univ., Italy

Volume

44

Issue

7

fYear

1996

fDate

7/1/1996 12:00:00 AM

Firstpage

1681

Lastpage

1692

Abstract

Evangelista (1994, 1993) introduced the multiplexed wavelet transform (MWT) and pointed out its potential applications to the analysis, synthesis, processing and coding of pseudo-periodic signals such as voiced speech and music. Coders based on the MWT have been shown to outperform the conventional subband coders when a reliable pitch parameter can be extracted from data. In this paper, we investigate the effects of uniform quantization of the MWT coefficients. We compare the performance of the new coders with that of WT, block-DCT, and KLT coders in terms of the coding gain achieved when optimal bit allocation schemes are adopted

Keywords

acoustic signal processing; block codes; discrete cosine transforms; feature extraction; multiplexing; music; speech coding; speech processing; speech synthesis; transform coding; transforms; wavelet transforms; KLT coders; block-DCT coders; coding gain; multiplexed wavelet transforms; music; optimal bit allocation; performance; pitch parameter; pseudo-periodic signals; quantization; voiced speech; wavelet transform coders; Multiple signal classification; Signal analysis; Signal processing; Signal synthesis; Speech analysis; Speech coding; Speech processing; Speech synthesis; Wavelet analysis; Wavelet transforms;

fLanguage

English

Journal_Title

Signal Processing, IEEE Transactions on

Publisher

ieee

ISSN

1053-587X

Type

jour

DOI

10.1109/78.510616

Filename

510616