Communications: electrical – Audible indication – Percussion-type sound producer
Patent
1983-03-15
1986-02-04
Sloyan, T. J.
Communications: electrical
Audible indication
Percussion-type sound producer
340347AD, 340347DA, 340347M, 364572, 364576, 364179, 364726, 358138, 381 31, H03K 1302
Patent
active
045689121
ABSTRACT:
In a data compression system, a digital signal comprising a series of digital samples and a sampling datum associated with each digital sample is received by a decoder. The sampling datum indicates the sampling interval of the associated digital sample. The decoder includes a microcomputer for storing the digital signal into a memory (M2) and reading each digital sample and the associated sampling datum. The digital sample is divided by the sampling datum to derive a quotient which indicates the slope of the signal to be recovered. The quotient is integrated by an integrator (6b) to provide interpolation between successive sampling points, so that the original signal is approximated by a plurality of line segments.
REFERENCES:
patent: 3383461 (1968-05-01), Dryden
patent: 4064423 (1977-12-01), Atkisson, Jr.
patent: 4366471 (1982-12-01), Kasuga
patent: 4393371 (1983-07-01), Morgan-Smith
Fjallbrant, Method of Data Reduction of Sampled Speech Signals . . . , Electronics Letters, 5/1977, vol. 13, No. 11, pp. 334 and 335.
Kitamura Masatsugu
Tanaka Mitsuaki
Sloyan T. J.
Victor Company of Japan , Limited
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