科学将白噪声定义为所有可听声音频率的组合。研究表明，听力正常的人可以听到20到20,000赫兹的声音频率。换句话说，可以认为白噪声就像是一次播放大约20,000种不同音调的声音。白噪声的实际声音通常被描述为嘶嘶声，类似于单词“hush”中字母“sh”的声音。选择形容词“white”来描述这种声音的最终组合，因为白色的相似性噪声对白光的质量，科学描述了可见光谱的所有颜色的组合。作为所有可听频率的组合，可以使用白噪声掩盖其他可能分散注意力的声音。例如，打开风扇可能会帮助淹没隔壁邻居吵闹的声音。从这个意义上说，风扇的嗡嗡声类似于白噪声。但白噪声如何掩盖其他噪音？
新西兰奥塔哥大学代写：白噪声
Science defines white noise as a combination of all audible sound frequencies. Studies have shown that people with normal hearing can hear sound frequencies of 20 to 20,000 Hz. In other words, white noise can be thought of as playing about 20,000 different tones at a time. The actual sound of white noise is usually described as a beep, similar to the sound of the letter “sh” in the word “hush”. The adjective “white” is chosen to describe the final combination of such sounds, because white similarity noise versus white light quality scientifically describes the combination of all colors of the visible spectrum. As a combination of all audible frequencies, white noise can be used to mask other sounds that may be distracting. For example, turning on the fan might help drown the loud noise of the neighbor next door. In this sense, the fan’s hum is similar to white noise. But how does white noise mask other noise?