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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Now the modulation — change of key from major to back to minor as the cortege will start up again and then we — a nice clarinet sound there and here comes our cortege with the bass.