FIELD: electrical communications; telephone sets for information conversion, reception, and transmission. SUBSTANCE: novelty is that handset has horn provided with acoustic filter channels communicating with surrounding atmosphere, that transmitter and receiver diaphragms are facing each other and installed in top part of handset, transmitter diaphragm has its membrane facing handset interior for interaction with subscriber's throat through horn channel and rubber mouth. EFFECT: enlarged functional capabilities; improved quality of telephone communications and improved noise immunity. 2 dwg
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|---|---|---|---|
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|
RU2013876C1 |
| 0 |
|
SU1777789A1 | |
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| DEVICE FOR REGISTRATION OF SPEECH PAUSE IN VOCODER PATH | 1991 |
|
RU2032232C1 |
