Data compressing system

Details Data compressing system Data compressing system

1981-07-22

1983-11-08

Miller, C. D.

Communications: electrical

Audible indication

Percussion-type sound producer

375 30, H03K 1300

Patent

active

044145365

ABSTRACT:
In a data compressing system, a sampling circuit samples an audio signal from a signal generator at a given period, and an A/D converter converts the sampled data into corresponding digital data. A differential circuit differentiates the digital sampled data to produce differential sampled data. The differential sampled data is segmented into sampling data trains each including the number of the sampled data corresponding to the audio signal for one second. The sampled data trains for 100 seconds are added by an adder in a manner that the sampled data in each of the sampled data trains are arranged in a random fashion. The data train formed by the addition is used, as compressed data, for communication or reproduction of signals.

REFERENCES:
patent: 3603976 (1971-09-01), Paine
patent: 3716851 (1973-02-01), Neumann
patent: 3725592 (1973-04-01), Tanaka
patent: 3838415 (1974-09-01), Melvin
patent: 3925611 (1975-12-01), Dennis
patent: 4077034 (1978-02-01), Dell

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