Echo under push button, echo suppression method and computer readable storage medium

摘要

A device for suppressing an echo signal, which is contained in a measured signal, which corresponds to a measured clay, is provided. In the device, the measured signal and a reference signal in a time period and calculates transformed into a frequency range, in order to each value of a ratio and a correlation between the measured signal and the reference signal in the frequency range to obtain. By performing a comparison of the values of the ratio and a coefficient of the correlation is derived, where a product of the coefficients and of the measured tone in the frequency range results in an estimated value of the echo signal. The echo in the measured signal by subtracting the estimate of the echo signal of the measured signal is suppressed, in each case in the frequency range.