Electrical audio signal processing systems and devices – One-way audio signal program distribution – Public address system
Patent
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.
Bergeron Lawrence E.
Daly Daniel F.
Grosso Elaine C.
Kemeny E. S. Matt
Shanahan Michael H.
Wang Laboratories, Inc.
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