Or attenuating all frequencies equally .

或衰减同样的倍数。

Method of 2-d wavelet transform in attenuating random noise .

基于二维小波变换的随机噪声压制方法研究。

It has the advantage of both layers attenuating the signal .

它的优点是双重信号减弱。

The researchers then modified the recordings of fingernails and chalk , removing or attenuating various frequency ranges .

研究者接着把指甲和粉笔的录音进行了修饰，消除或是减小各种各样的频率范围。

Outstanding acoustic attenuating performance creates a serene working and living environment for the users .

卓越的隔声降噪功能，为使用者创造宁静的工作生活环境。