Echo compensation device

Details Echo compensation device Echo compensation device

H - Electricity

04

B

H04B 3/23 (2006.01)

Patent

CA 2147867

An echo compensation device, having a digital transverse filter, for an information transmission system is described, as well as a 4/2-wire interface having at least one such device. According to the invention, a scale value device is provided which respectively evalu- ates the value of the input signal and also the values of the time-delayed signals of the transverse filter and establishes a scale value as a function thereof. Further- more, a device is provided for scaling all the signal values with the associated scale value before these are weighted with the respectively assigned filter co- efficients. After addition of the weighted scaled signal values has been performed, the value of the output signal is descaled with the same scale value with which the signal values had previously been scaled.

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