A sinusoidal LPC vocoder

Author

Hedelin, Per

Author_Institution

Dept. of Signals & Syst., Chalmers Univ. of Technol., Goteborg, Sweden

fYear

2000

fDate

2000

Firstpage

2

Lastpage

4

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Speech Coding, 2000. Proceedings. 2000 IEEE Workshop on

Conference_Location

Delavan, WI

Print_ISBN

0-7803-6416-3

Type

conf

DOI

10.1109/SCFT.2000.878374

Filename

878374