Transmission of voice or sound through telegraphy

Details Transmission of voice or sound through telegraphy Transmission of voice or sound through telegraphy

1973-09-13

1976-01-13

Claffy, Kathleen H.

H04R 2102

Patent

active

039327116

ABSTRACT:
A vibration transducer, comprising a conductive member, such as a weighted carbon bar loosely fitting into support means, such as a pair of carbon bearing blocks with the bearing blocks rigidly attached to a flexible membrane, serves as the transmitter of the voice transmission system. The bearing blocks are series wired into an electrical circuit, including a direct-current power source and a loud-speaker coil. A fluctuating pressure signal sets the flexible membrane into vibration and causes the weighted carbon bar to bounce in its bearings, thereby alternately interrupting and closing the electrical circuit. The pulsed DC signal passing through the loud-speaker coil reproduces the motion experienced by the transducer membrane in the motion of the loud-speaker cone thereby reproducing the input sound pattern.

REFERENCES:
patent: 292603 (1884-01-01), Waite
patent: 297168 (1884-04-01), Rogers
patent: 852646 (1907-05-01), Blake

Affiliated with

Also associated with

Rating

Transmission of voice or sound through telegraphy does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Transmission of voice or sound through telegraphy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transmission of voice or sound through telegraphy will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-748643