目前有源耳罩大都采用固定的模拟反馈控制器，不能够最大限度地消除低频噪声。
Most of active headsets, which use fixed analog feedback controllers, are not able to maximize the noise reduction.
目前有源耳罩大都采用固定的模拟反馈控制器，不能够最大限度地消除低频噪声。
Most of active headsets, which use fixed analog feedback controllers, are not able to maximize the noise reduction.
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