FIELD: electrical communication engineering.
SUBSTANCE: invention relates to communication engineering, particularly to loudspeaker telephone communication systems. Said technical result is achieved by the fact that in the disclosed loudspeaker communication device, a microphone preamplifier and a key, which are output from the common housing, are used, as well as using a circuit for separate operation of a signal receiving amplifier from a tone frequency channel and a signal transmission amplifier into a tone frequency channel.
EFFECT: technical result is reduction of noise level to useful signal of loudspeaker communication.
1 cl, 1 dwg
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