Title: VARIABLE FRAME RATE SPEECH CODING USING OPTIMAL INTERPOLATION
Authors: CHUNG, CJ
CHEN, SH
電信工程研究所
電信研究中心
Institute of Communications Engineering
Center for Telecommunications Research
Issue Date: 1-Jun-1994
Abstract: A VFR LPC vocoder using optimal interpolation is presented in this paper. In the encoder, some representative frames of an utterance are selected for transmission. In the decoder, LPC parameters of all untransmitted frames are restored by optimal interpolation. Simulation results show that this coding scheme outperforms the conventional VFR vocoder using linear interpolation. By incorporating contour quantization of gain and pitch information, a low variable-rate LPC vocoder is realized. An informal listening test shows that very high intelligible reconstructed speech was obtained at an average data rate of 300 bps.
URI: http://dx.doi.org/10.1109/26.293669
http://hdl.handle.net/11536/2477
ISSN: 0090-6778
DOI: 10.1109/26.293669
Journal: IEEE TRANSACTIONS ON COMMUNICATIONS
Volume: 42
Issue: 6
Begin Page: 2215
End Page: 2218
Appears in Collections:Articles


Files in This Item:

  1. A1994NU02800005.pdf