Wideband Speech Coding at 4 kbps using Waveform Interpolation
نویسندگان
چکیده
In this paper we present a new low rate, wideband speech coder operating at 4 kbps and based on Waveform Interpolation (WI). An outline of WI speech coding is provided together with a description of its adaptation to wideband speech. Particular emphasis is placed on the quantisation of the WI parameters. Included is a detailed analysis of the quantisation requirements for the Line Spectral Frequencies (LSFs) and the Characteristic Waveforms (CWs). We conclude that WI is a feasible technique for high quality low rate wideband speech coding.
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