Talker speech level control circuit for telephone transmitter by

Details Talker speech level control circuit for telephone transmitter by Talker speech level control circuit for telephone transmitter by

1989-07-05

1991-09-10

Isen, Forester W.

Electrical audio signal processing systems and devices

Including amplitude or volume control

Automatic

381109, H03G 300

Patent

active

050480910

ABSTRACT:
A talker speech level control circuit for controlling the level of an electric signal converted from a talker speech, includes an acoustic-electric conversion element for converting an acoustic input signal into an electric signal; a talker speech level detection circuit for detecting whether or not the speech level of an output signal from the conversion element is within an area representing a need for speech level control; and a talker speech level adjustment circuit responsive to a signal detected by the talker speech level detection circuit for controlling the electric signal level in accordance with the detected area within which the talker speech level falls.

REFERENCES:
patent: 3867576 (1975-02-01), Simonsen
patent: 4378467 (1983-03-01), Ferrantelli
patent: 4550426 (1985-10-01), Gillig et al.
patent: 4602381 (1986-07-01), Cugnini et al.
patent: 4630302 (1986-12-01), Kryter
patent: 4658425 (1987-04-01), Julstrom
patent: 4701953 (1987-10-01), White
patent: 4759071 (1988-07-01), Heide

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