Compression and expansion of digitized voice signals

Details Compression and expansion of digitized voice signals Compression and expansion of digitized voice signals

1983-02-14

1986-12-23

Kemeny, E. S. Matt

Electrical audio signal processing systems and devices

One-way audio signal program distribution

Public address system

G10L 500

Patent

active

046317465

ABSTRACT:
Speech signal data compression is improved by a first compression using Time Domain Harmonic Scaling (TDHS), wherein two periods of voiced data are averaged together, followed by a second compression using Continuously Variable Slope Delta Modulation (CVSD). Pitch period detection and sampling-rate conversion are also features of the invention.

REFERENCES:
D. Malah, "Time-Domain Algorithms etc.", IEEE Transactions on Acoustics, Speech, Apr. 1979, pp. 121-133.
Malah, D., "Combined Time Domain Harmonic Compression and CUSD . . . ", Proc. IEEE ICASSP, Denver, CO, Apr. 1980, pp. 504-507.

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