Signal compression circuit, particularly for a telephone set

Details Signal compression circuit, particularly for a telephone set Signal compression circuit, particularly for a telephone set

H - Electricity

03

G

379/82

H03G 7/00 (2006.01) H04B 1/64 (2006.01) H04M 1/60 (2006.01)

Patent

CA 1292589

TITLE A SIGNAL COMPRESSION CIRCUIT, PARTICULARLY FOR A TELEPHONE SET ABSTRACT OF THE DISCLOSURE The invention relates to a signal compression circuit, more particularly for a telephone set of the handsfree-type, comprising a preamplifier (10), the input of which is connected with an input signal to be processed, and a preamplifier gain control device (11) for servo-controlling, to a predetermined value, the output signal amplitude of the preamplifier, in which the gain control device (11) is associated with a circuit (C, 15, 16) determining two time constants, which respectively control the increase or decrease speed of the preamplifier gain (10) in relation with the input signal amplitude (Vin).

572596

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