Abstract

Most modern speech coders operate on a limited bandwidth. This tends to decrease the naturalness of the synthesized audio and often also affects the intelligibility of certain sounds. While a few wideband speech coders have been standardized, implementing them in existing systems would require significant changes to the infrastructure. One solution is to use bandwidth extension techniques that predict the high-frequency band based on low-band features. Problems arise however when the correlation between the low and the high band is insufficient for an adequate representation of the wideband signal. In this paper, we propose a novel source-filter bandwidth extension algorithm that makes use of psychoacoustic concepts to determine the perceptual benefits that a particular audio frame gains from a more exact representation of the high band. Preliminary results indicate that the proposed system performs at a lower average bit rate when compared to other similar algorithms without compromising the audio quality.

Original languageEnglish (US)
Title of host publication2006 IEEE 8th Workshop on Multimedia Signal Processing, MMSP 2006
PublisherIEEE Computer Society
Pages146-149
Number of pages4
ISBN (Print)0780397517, 9780780397514
DOIs
StatePublished - Jan 1 2006
Event2006 IEEE 8th Workshop on Multimedia Signal Processing, MMSP 2006 - Victoria, BC, Canada
Duration: Oct 3 2006Oct 6 2006

Publication series

Name2006 IEEE 8th Workshop on Multimedia Signal Processing, MMSP 2006

Other

Other2006 IEEE 8th Workshop on Multimedia Signal Processing, MMSP 2006
CountryCanada
CityVictoria, BC
Period10/3/0610/6/06

ASJC Scopus subject areas

  • Signal Processing

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    Berisha, V., & Spanias, A. (2006). Bandwidth extension of audio based on partial loudness criteria. In 2006 IEEE 8th Workshop on Multimedia Signal Processing, MMSP 2006 (pp. 146-149). [4064536] (2006 IEEE 8th Workshop on Multimedia Signal Processing, MMSP 2006). IEEE Computer Society. https://doi.org/10.1109/MMSP.2006.285286