The Audio EchoFilter repeats a sound after a given Delay, attenuating the repetitions based on the Decay Ratio.
音频回声滤波器在一个给定延迟重复一个声音，衰减基于衰变率的重复。
2
Based on building up a model of echo canceller, the convergence of gradient-type stochastic adjustment algorithm of an adaptive filter under the mean-squared error criterion is discussed.
According to laser radar echo characteristic, the difference filter and the match filter were adopted. As a result, the SNR is advanced about 1.5 times.