Telephone transmission installation between interlocutors in a noisy environment
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United States of America Patent
Stats
-
Jan 6, 1981
Grant Date -
N/A
app pub date -
Aug 15, 1978
filing date -
Aug 18, 1977
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An arrangement for controlling a telephone transmission line having an input linked to a sound detection device located in a noisy environment. The transmission line operates only for the transmission of words received by the sound detection device. The transmission line is made operative or inoperative according to whether sound energy variation collected by the sound detection device for duration of a predetermined time interval is superior or inferior to a predetermined approximate audio level.
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Family
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Cited Art Landscape
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