Comparing scalar and lattice based encoding of wavelet coefficients in sinusoidal plus wavelet packet coding

Mark Fek, A. Várkonyi-Kóczy, Jean Marc Boucher

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We have recently proposed a combined sinusoidal and Wavelet Packet Transform (WPT) codec for joint speech and audio coding. In this paper, we compare the performance of scalar and Zn lattice based encoding of the WPT coefficients. The quantization of the WPT coefficients are determined by a psychoacoustic masking model, and it is identical in both cases. The audio quality remains the same for the scalar and the Zn lattice based encoding, as only the encoding of the quantized WPT coefficients is changed. The mean bit rate of the coder (depending on the encoded signal) was reduced from 62-32 kbps to 54-30kbpsby applying the Zn lattice based coding. Demonstration sound files are available at www-sc.enst-bretagne.fr/ fek/demo/.

Original languageEnglish
Title of host publicationEuropean Signal Processing Conference
PublisherEuropean Signal Processing Conference, EUSIPCO
Volume2015-March
Publication statusPublished - Mar 27 2015
Event11th European Signal Processing Conference, EUSIPCO 2002 - Toulouse, France
Duration: Sep 3 2002Sep 6 2002

Other

Other11th European Signal Processing Conference, EUSIPCO 2002
CountryFrance
CityToulouse
Period9/3/029/6/02

ASJC Scopus subject areas

  • Signal Processing
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Comparing scalar and lattice based encoding of wavelet coefficients in sinusoidal plus wavelet packet coding'. Together they form a unique fingerprint.

  • Cite this

    Fek, M., Várkonyi-Kóczy, A., & Boucher, J. M. (2015). Comparing scalar and lattice based encoding of wavelet coefficients in sinusoidal plus wavelet packet coding. In European Signal Processing Conference (Vol. 2015-March). [7072010] European Signal Processing Conference, EUSIPCO.