Voice operated switch

Details Voice operated switch Voice operated switch

1982-03-01

1984-11-20

Kemeny, E. S. Matt

Electrical audio signal processing systems and devices

One-way audio signal program distribution

Public address system

381110, G10L 100

Patent

active

044843445

ABSTRACT:
A voice operated switch having minimum signal amplification in the stages which separate the voice signals from the noise signals. The majority of amplification is then applied only to the syllabic rate voice component detected by an offset threshold in the syllabic rectifier-amplifier circuit to produce a two-state signal, one state representative of the presence of voice energy and the other state representative of the absence of voice energy. The two states are compared with a threshold voltage adjustable between a maximum and minimum voltage. A maximum and minimum setting allow a respective nontransmission and transmission of the voice signals irrespective of the presence or absence of such signals.

REFERENCES:
patent: 3555192 (1971-01-01), Hymer
patent: 4052568 (1977-10-01), Jankowski
patent: 4187396 (1980-02-01), Luhowy

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