中文说明：本程序为回波抵消程序，程序中附有解释，很明了，并能到达到消除回波的效果
English Description：
This program is an echo cancellation program, with explanation attached in the program. It is very clear and can achieve the effect of eliminating echo
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中文说明：本程序为回波抵消程序，程序中附有解释，很明了，并能到达到消除回波的效果
English Description：
This program is an echo cancellation program, with explanation attached in the program. It is very clear and can achieve the effect of eliminating echo