Anti-side tone transmitter

Details Anti-side tone transmitter Anti-side tone transmitter

1982-04-08

1984-05-15

Pellinen, A. D.

Electrical audio signal processing systems and devices

Having non-electrical feature

Having microphone

179111E, 179121D, H04R 104, H04R 1901

Patent

active

044492367

ABSTRACT:
Anti-side tone transmitter insertable in a telephone handset improves transmission of the speaker's voice without distortion in high ambient noise environments. The transmitter cap is provided with a central opening in communication with an electret microphone. One or more satellite openings are spaced from and at least partially surround the central opening. An acoustic damping element is located below the satellite openings. The electret microphone is mounted below the cap on a PC board which contains the transmitter circuitry. The PC board is seated on a shelf formed in the interior surface of the side wall of the transmitter cup. Conventional telephone handset cord transmitter wires may be connected to screw terminals on the base of the transmitter cup or to spade lugs mounted on the PC board.

REFERENCES:
patent: 664904 (1901-01-01), Skold
patent: 1372862 (1921-03-01), Carmody
patent: 2118993 (1938-05-01), Volf
patent: 2311416 (1943-02-01), Salb et al.
patent: 3536862 (1970-10-01), Weingartner
patent: 3660602 (1972-05-01), Thompson
patent: 3830988 (1974-08-01), Mol et al.
patent: 4009355 (1977-02-01), Poradowski
patent: 4385209 (1983-05-01), Greason et al.

Affiliated with

Also associated with

Rating

Anti-side tone transmitter does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Anti-side tone transmitter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Anti-side tone transmitter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-849316