Improving signal quality of a speech codec using hybrid perceptual-parametric algorithm

Authors:
Maciej Kulesza;Grzegorz Szwoch;Andrzej Czyzewski
Affiliations:
Multimedia Systems Department, Gdansk University of Technology, Narutowicza 11&#/#/47/12, 80-/952 Gdansk, Poland.;Multimedia Systems Department, Gdansk University of Technology, Narutowicza 11&#/#/47/12, 80-/952 Gdansk, Poland.;Multimedia Systems Department, Gdansk University of Technology, Narutowicza 11&#/#/47/12, 80-/952 Gdansk, Poland
Venue:
International Journal of Intelligent Information and Database Systems
Year:
2008

Citing 9
Cited 0

A practical handbook of speech coders

A practical handbook of speech coders
Techniques for the regeneration of wideband speech from narrowband speech

EURASIP Journal on Applied Signal Processing - Nonlinear signal and image processing - part I
A Tutorial on MPEG/Audio Compression

IEEE MultiMedia
Speech Coding Algorithms: Foundation and Evolution of Standardized Coders

Speech Coding Algorithms: Foundation and Evolution of Standardized Coders
MELP: The New Federal Standard at 2400 Bps

ICASSP '97 Proceedings of the 1997 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP '97)-Volume 2 - Volume 2
A 16, 24, 32 kbit/s wideband speech codec based on ATCELP

ICASSP '99 Proceedings of the Acoustics, Speech, and Signal Processing, 1999. on 1999 IEEE International Conference - Volume 01
The adaptive multirate wideband speech codec: system characteristics, quality advances, and deployment strategies

IEEE Communications Magazine
On the architecture, operation, and applications of VMR-WB: the new cdma2000 wideband speech coding standard

IEEE Communications Magazine
Extended AMR-WB for high-quality audio on mobile devices

IEEE Communications Magazine

Quantified Score

Hi-index	0.00

Visualization

Abstract

A hybrid parametric-perceptual speech codec architecture is presented. The basic CELP parametric codec structure is enhanced using the perceptual coding method. The objective of the codec hybridisation is obtaining significant improvement in the perceived signal quality. Two hybrid architectures are proposed. The first one encodes voiced parts perceptually in the CELP residual signal. The second one divides the signal into voiced signal components that are encoded using the perceptual algorithm, unvoiced components that are encoded parametrically and transients remaining unencoded. The signal quality achieved using the hybrid codec is compared to the quality of some standard speech codecs.