A multi-band CELP wideband speech coder

A. Ubale, A. Gersho
1997 IEEE International Conference on Acoustics, Speech, and Signal Processing  
A n o v el low-delay wideband speech coder, called Multiband CELP (MB-CELP), overcomes the major obstacles usually associated with two traditional CELP approaches to wideband speech coding -namely fullband CELP and split-band CELP. The new MB-CELP coder employs a multi-band bank of o-line ltered excitation codebooks, fullband linear prediction synthesis, and minimization of the error between original and synthesized speech signal over the full frequency range. A 16 kbps version of MB-CELP coder
more » ... on of MB-CELP coder with two equal bands, is described in this paper. Subjective comparison test results show that this coder performs better than the G.722 coder at the bit-rate of 48 kbps.
doi:10.1109/icassp.1997.596201 dblp:conf/icassp/UbaleG97 fatcat:pjiagjyo2zaonhxwkdhabqehde