Algorithm for joint tree encoding of a speech-signal source and a discrete communications channel

Authors

  • I. N. Okov

DOI:

https://doi.org/10.3103/S073527271990070160

Abstract

It is well known that a speech-signal source and a discrete communications channel may be encoded either separately or jointly. For separate encoding, the source encoder converts the speech signal to discrete form, and then the output signal of the encoder is encoded by a redundant interference-immune code. For joint encoding, these operations are performed simultaneously.

The present work proposes an algorithm for the joint tree encoding of a speech-signal source and a discrete communications channel on the basis of adaptive delta-modulation with delayed decision and noise-immune encoding with error detection.

References

ANDERSON, J.; BODIE, J. Tree encoding of speech. IEEE Trans. Inf. Theory, vol. 21, no. 4, pp. 379-387, 1975. DOI: https://doi.org/10.1109/TIT.1975.1055415.

JANSSEN, A.J.E.M.; VELDHUIS, R.N.J.; VRIES, L.B. Adaptive interpolation of discrete-time signals that can be modeled as autoregressive processes. IEEE Trans. Acoust. Speech, Signal Processing, vol. 34, no. 2, pp. 317-330, 1986. DOI: https://doi.org/10.1109/TASSP.1986.1164824.

JAYANT, N.S.; CHISTENSEN, S.A.Effect of packet losses in waveform coded speech and improvements due to an odd-even sample-interpolation procedure. IEEE Trans. Commun., vol. 29, no. 2, pp. 101-109, 1981. DOI: https://doi.org/10.1109/TCOM.1981.1094975.

Published

1990-07-16

Issue

Section

Brief Communications