Title :
A sinusoidal LPC vocoder
Author_Institution :
Dept. of Signals & Syst., Chalmers Univ. of Technol., Goteborg, Sweden
Abstract :
Twenty years of work with sinusoidal modeling of speech has lead to very competitive principles of low rate coding. In this study, we discuss a few issues in the design of a sinusoidal coding system. We stress that by a careful design of all blocks of the encoder and decoder, allowing for some additional complexity, it is possible to build a low rate coder free of many of the artifacts associated with conventional vocoding systems. We focus this discussion on multi-band partial voicing and on parameter smoothing and interpolation
Keywords :
interpolation; linear predictive coding; quantisation (signal); signal sampling; smoothing methods; speech coding; speech intelligibility; speech synthesis; vocoders; 8 kHz; decoder; encoder; interpolation; low rate coding; multi-band partial voicing; parameter smoothing; quantization; sampling rates; sinusoidal LPC vocoder; sinusoidal coding system design; sinusoidal speech modeling; speech analysis-synthesis; speech quality; vocoding systems; Filter bank; Filtering; Interpolation; Linear predictive coding; Power harmonic filters; Signal generators; Speech coding; Speech enhancement; Speech processing; Vocoders;
Conference_Titel :
Speech Coding, 2000. Proceedings. 2000 IEEE Workshop on
Conference_Location :
Delavan, WI
Print_ISBN :
0-7803-6416-3
DOI :
10.1109/SCFT.2000.878374
