ISCA Archive ECST 1987
ISCA Archive ECST 1987

Position reoptimisation for a multipulse excited LPC coder

I. Boyd

Since multipulse excited linear predictive coding was introduced several improvements to the basic multipulse coding algorithm have been suggested. The most notable of these are the inclusion of a pitch filter and amplitude reoptimisation. This paper presents an alternative to amplitude reoptimisation where not only the pulse amplitudes, but also the pulse positions are reoptimised. A comparison between position reoptimisation and amplitude reoptimisation in terms of complexity and performance is included.