Immittance spectral pairs (ISP) for speech encoding

Authors:
Yuval Bistritz;Shlomo Peller
Affiliations:
Department of Electrical Engineering, Tel Aviv University, Tel Aviv, Israel;Department of Electrical Engineering, Tel Aviv University, Tel Aviv, Israel
Venue:
ICASSP'93 Proceedings of the 1993 IEEE international conference on Acoustics, speech, and signal processing: speech processing - Volume II
Year:
1993

Citing 2
Cited 1

Digital Coding of Waveforms: Principles and Applications to Speech and Video

Digital Coding of Waveforms: Principles and Applications to Speech and Video
Low bit-rate quantization of LSP parameters using two-dimensional differential coding

ICASSP'92 Proceedings of the 1992 IEEE international conference on Acoustics, speech and signal processing - Volume 1

A comparative study of LPC parameter representations and quantisation schemes for wideband speech coding

Digital Signal Processing

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Abstract

Immittance Spectral Pairs (ISP) form a new set of parameters proposed for presenting the LPC filter. ISP is close to LSP and owns similar 'niceties', yet it is different. For a filter of order n it consists of a 'gain' and n-1 'frequency' parameters instead of n 'frequency' parameters for LSP. In regarding LPC as a pseudo model for the vocal tract ISP may represent the immittance at the glottis, without posing, like LSP, artificial boundary conditions. In quantization experiments, ISP has been found to compare favorably with LSP. A study of interframe differentiation coding for ISP and LSP is included and it demonstrates the respectives performances of the two sets.