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CELP based mixed-source model for very low bit rate speech coding

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2 Author(s)
C. H. Kwon ; Korea Adv. Inst. of Sci. & Technol., Daejeon, South Korea ; C. K. Un

A CELP based mixed-source model is described. It uses a mixed excitation which combines a lowpass-filtered adaptive source and a highpass-filtered stochastic source. In addition, one more stochastic source is newly employed for more natural sounding speech. In informal listening tests, the proposed model at 3 kbit/s shows very good performance both in speech quality and intelligibility.

Published in:

Electronics Letters  (Volume:29 ,  Issue: 2 )