它们能更好地阻止外界的噪音，所以你可以调低音量听音乐。
They do a better job of stopping outside noise, so you can listen at a lower volume.
我现在意识到什么是广泛应用与各种“颜色”的声音：忧郁的噪音是沉默的，更多的是夏日白色版本，然而深褐色的噪音是低音加重加深的。
I can now recognize what are widely described as the various "colors" of noise: blue noise is a muted, more summery version of white, while brown noise is bassy and deep.
噪音对信号的掩蔽作用显著，其中低音最易被掩蔽。
The noise occultation was significant, and the undertone was the easiest one to be occulted.
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