Envelope and instantaneous phase considerations in speech modelling
Document typeConference report
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Rights accessOpen Access
The authors present a low-bit-rate coding system where the envelope and instantaneous phase of the residual are used. A time-varying filter (short-delay filter) is excited by a signal composed by a parametric version of the residual, multiplied by a sequence from a codebook. Two alternatives are studied for the design of the codebook: sequences formed by random pulses and sequences formed by random phases to simulate the instantaneous phase of the residual
CitationMoreno, A., Lagunas, M. Envelope and instantaneous phase considerations in speech modelling. A: IEEE International Symposium on Circuits and Systems. "ISCAS 1988: the IEEE International Symposium on Circuits and Systems: proceedings". Monterey: Institute of Electrical and Electronics Engineers (IEEE), 1988, p. 1557-1560.