A device for the treatment of the speech for 2002 radio adapted for the transmission and reception of the speech

摘要

Treatment device of the speech for 2002 radio adapted for the transmission and reception of the speech. / p & & p & the device is of the type comprising a compression circuit 11 of the dynamic range of the speech signal for emit the speech signal has a constant level and an expander 18 for restore at the reception level of speech before its compression. A logic circuit 3 controls the compression circuit 11 by means of attenuation is not constant as a function of the speech level. A comparator circuit selector 19 torque by a first input a logic output of the filtering circuit 13 and by a second input to the output of a device 17 for the control of the expander 18 compares the values of attenuation provided by the logic circuit 13 is supplied by the control device of the expander and adjusts the value of attenuation of the compression circuit 11 has the largest of the values of the attenuation provided by the logic circuit 13, or by the device 17 for the control of the expander. / p & & p & application: suppression of the echo in radiotelephony.