TY - GEN
T1 - Enhancing the quality of coded audio using perceptual criteria
AU - Berisha, Visar
AU - Spanias, Andreas
PY - 2005
Y1 - 2005
N2 - Code excited linear predictive (CELP) coding standards often fail to properly represent non-speech signals because they are inherently optimized for speech. Most modern CELP coders include provisions for the inclusion of indirect perceptual criteria to counteract this problem, however no direct psychoacoustic models are employed. In this paper, we present a pre- and post- processor for the vocoder that makes use of the MPEG-1 psychoacoustic model 1 in order to enhance the quality of the coded audio. A novel frequency-domain technique is proposed that attempts to shape the residual of a vocoder such that it falls below psychoacoustic thresholds.
AB - Code excited linear predictive (CELP) coding standards often fail to properly represent non-speech signals because they are inherently optimized for speech. Most modern CELP coders include provisions for the inclusion of indirect perceptual criteria to counteract this problem, however no direct psychoacoustic models are employed. In this paper, we present a pre- and post- processor for the vocoder that makes use of the MPEG-1 psychoacoustic model 1 in order to enhance the quality of the coded audio. A novel frequency-domain technique is proposed that attempts to shape the residual of a vocoder such that it falls below psychoacoustic thresholds.
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U2 - 10.1109/MMSP.2005.248613
DO - 10.1109/MMSP.2005.248613
M3 - Conference contribution
AN - SCOPUS:37649032342
SN - 0780392892
SN - 9780780392892
T3 - 2005 IEEE 7th Workshop on Multimedia Signal Processing
BT - 2005 IEEE 7th Workshop on Multimedia Signal Processing, MMSP 2005
PB - IEEE Computer Society
T2 - 2005 IEEE 7th Workshop on Multimedia Signal Processing, MMSP 2005
Y2 - 30 October 2005 through 2 November 2005
ER -