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[audioFiles]2015m3s/audio_ezfj_ezflisteningd_20151_028[/audioFiles]

游客2023-11-05  82
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答案                             White Noise
    There are different kinds of noise with distinct frequencies that are classified by color, namely: white noise, pink noise, brown noise, blue noise, and gray noise. Below is an overview of white noise.
    Generally speaking, white noise is a part of the full scale of sound frequencies a human ear can recognize. White noise is a mixture of sound frequencies in equal levels. It is a very quiet sound that is relaxing and pleasant to the ears of anyone. A number of people say that it is similar to the sound of the rain or the ocean waves.
    White noise offers countless benefits. The noise comes in different forms that serve different purposes. Some white noise works better than others for particular uses. Some people may find some white noise sounds more pleasing than others.Moreover, white noise is said to have a more calming effect than music does.
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