Pulse or digital communications – Repeaters – Testing
Patent
1989-02-14
1991-10-22
Chin, Stephen
Pulse or digital communications
Repeaters
Testing
455 53, H04B 700
Patent
active
050602403
ABSTRACT:
A simulcast broadcast uses digital signal processing techniques to scale pulse coded modulation samples of a signal for broadcast. Samples are adjusted to fully utilize all quantization levels representable by an 8-bit word. Time delay is adjustable using digital techniques by writing and reading data into and out of a RAM. Signal amplitude is adjustable by multiplying samples by a numeric factor. A computer can be used to adjust processing, delay and amplification of the digital signal processor.
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Erickson Paul M.
Groch Tim J.
Kandah Taisir Y.
Matz John E.
Shaughnessy Mark L.
Chin Stephen
Krause Joseph P.
Motorola Inc.
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