Abstract

Low bit rate standards involving the code excited linear predictive coder (CELP) are typically optimized for telephone speech. The performance of CELP with non-speech signals and particularly with music degrades considerably. It is of interest these days to improve the robustness of these coders by adding pre-and post-processing stages to the core compression algorithm. In this paper, we propose a frequencydomain technique involving time-varying filters to enhance the audio quality with a small number of overhead information bits. Preliminary results have shown both qualitative and quantitative improvements in the sound quality.

Original languageEnglish (US)
Title of host publicationProceedings - IEEE International Symposium on Circuits and Systems
Pages4050-4053
Number of pages4
DOIs
StatePublished - 2005
EventIEEE International Symposium on Circuits and Systems 2005, ISCAS 2005 - Kobe, Japan
Duration: May 23 2005May 26 2005

Other

OtherIEEE International Symposium on Circuits and Systems 2005, ISCAS 2005
CountryJapan
CityKobe
Period5/23/055/26/05

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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