Third European Conference on Speech Communication and Technology

Berlin, Germany
September 22-25, 1993


M-LCELP Speech Coding at Bit-Rates Below 4kbps

Kazunori Ozawa, Masahiro Serizawa, Toshiki Miyano, Toshiyuki Nomura

Information Technology Research Labs., NEC Corporation Kawasaki, Kanagawa, Japan

This paper presents the M-LCELP (Multi-mode Learned Code Excited LPC) speech coder, which has been developed for submission to the competition for setting the North American standards for half-rate digital cellular systems. M-LCELP develops several techniques to achieve high-quality synthetic speech. The MOS subjective test shows that 4.075kbps M-LCELP synthetic speech quality is high, equivalent to that of an 8kbps full-rate VSELP coder.

Full Paper

Bibliographic reference.  Ozawa, Kazunori / Serizawa, Masahiro / Miyano, Toshiki / Nomura, Toshiyuki (1993): "M-LCELP speech coding at bit-rates below 4kbps", In EUROSPEECH'93, 51-54.