Dynamic information storage or retrieval – Signal processing by storage and subsequent retrieval
Patent
1981-05-11
1983-11-15
Kemeny, Emanuel S.
Dynamic information storage or retrieval
Signal processing by storage and subsequent retrieval
360 8, G10L 100
Patent
active
044157720
ABSTRACT:
A time compression/expansion system for recorded programs provides time change on playback with pitch correction free of gaps or processing noise due to splicing and discard. A dual memory delay system operated to inversely vary delay is used to provide an interval during which to detect the start of the next program sample with matched signal amplitude and sign. During this interval pitch correction is a continuous extension of the current sample. The system can include individual processing of contiguous frequency bands.
REFERENCES:
patent: 3949174 (1976-04-01), Sutton
patent: 4079197 (1978-03-01), Furcher
patent: 4091242 (1978-05-01), Carubba et al.
patent: 4210781 (1980-07-01), Nishimura et al.
patent: 4241235 (1980-12-01), McCanney
Eppler, Jr. William G.
Klasco Michael A.
Kornfeld Irwin H.
Nathanson Rex
Kemeny Emanuel S.
Pfund Charles E.
The Variable Speech Control Company ("VSC")
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