Electrical audio signal processing systems and devices – One-way audio signal program distribution – Public address system
Patent
1982-04-28
1985-10-01
Kemeny, E. S. Matt
Electrical audio signal processing systems and devices
One-way audio signal program distribution
Public address system
381 47, G10L 100
Patent
active
045450650
ABSTRACT:
High-frequency broadband noise (at frequencies above the lower-frequency analog information signal) is actually required for this system which transforms the information-plus-noise signal (FIG. 2a) into a binary-coded pulse-width-modulated signal (FIG. 2c) whose modulation represents the original information and noise. Such coding uses broadband infinite clipping to enhance the information to noise ratio, and also enhance the dynamic-range capability. A second embodiment synchronizes the binary-coded signal to a signal clock. Enhanced intelligibility for the hearing-impaired is discussed.
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Kemeny E. S. Matt
XSI General Partnership
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