digital filter circuit for reducing the size of words of a digital signal of telephone switching systems used in digitaldigital filters are joncteur line and task of such circuits.

摘要

in a circuit with two - wire line converters and four wire analogue and digitalit is driven by the incoming signal after the reduction of the sampling rate and the signals provided in the respective correction coefficients.then, the sampling rate of the correction signals is increased by combination with those appearing in the road show.the self adaptive echo suppressor, the value of the correction factors is established with the aid of a pulse pattern to the circuit in the line.