sharpen edge meaning in Chinese

边界锐化
边缘锐化

The results show that ( 1 ) the " prediction & cancellation " method can successfully smooth the reverberation and sharpen edges of the echo , so may detect echoes which power are great than the reverberation background by odb in one channel , ( 2 ) the scaled probabilities method can effectually separate a echo which power is great than the background by 6db , while the reverberation is cancelled dr astically
果。计算结果表明， “预测一抵消”算法对混响有平滑作用，对回波则有突出信号边缘的作用，单通道情况下的最小可检测信号干扰背景功率比约为odb 。概率净化算法在信号干扰背景功率比大于6db的情况下能有效分离回波、抑制混响。