In the wilderness such interference is rare, but in cities (where tunnels often start and finish) radio stations constantly blare out noise on many frequencies, making such filtering essential.

在野外这种干扰比较小，但是在城市就不见得了(城市往往是这种隧道的起点和终点)，众多的广播电台在诸多频段上不断地发出很大的噪声干扰，这种过滤手段就显得相当重要了。

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The source of this paradox is electronic anti-noise which creates sound waves to cancel out unwanted noise, such as rattles, blare, etc.

这种矛盾的根源是电子抗噪，它会产生声波来抵消不想要的噪音，如响尾音、刺耳的鸣响等。

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Japan cries out for change as loudly as the familiar sound trucks blare out the screeds of racketeer-friendly right-wing parties.

FORBES: Japan's Dirty Secrets