但这个似乎是版权末日来临的噪音其实掩盖住了一个更为突出的一点：传播发售渠道的障碍已经完全坍塌了。
But all of this noise about the approaching end of copyright obscures a more salient point: the barriers of distribution have utterly collapsed.
值得注意的是，我们的星球开始接收到无线电噪音是在大约100年前当我们开始传播无线电波和电视信号的时候。
It's also worth remembering that our planet started to get "radio noisy" when we started transmitting radio and television signals about 100 years ago.
把波场沿深度外推可以消除与地表有关的“噪音” ，如直达波、面波、声波及在表层传播的随机噪音。
Wave field continuation can remove much of the energy which propagates along the surface, such as direct waves, ground roll and some random noises.
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