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In chapter 5 the jamming such as phase modulation noise, binary pseudo random sequence and multiple pseudo targets are discussed.
第五章对雷达干扰进行了阐述，主要的干扰信号有连续噪声调相干扰、伪随机码噪声干扰、多假目标干扰。
You're unlikely to notice tape modulation noise outside of a recording studio because it's specific to analog tape recorders, which are fast becoming obsolete, and usually hidden by the music itself.
录音室外的人不大可能听到调制磁带时的噪音，这种噪音是那些很快就过了时的模拟式录音机所特有的，并且这些噪音常常被磁带内容所掩盖。
The SETI institute, which searches for extra terrestrial life, has compared picking up a signal’s modulation to picking up the sound of a flute when it’s masked by the noise of a waterfall.
对外星智能的探索研究院，专门寻找外星生物。 它他们对接受到信号的变调和被瀑布声掩盖的笛声做了比较。
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