Sound
Similarly, a source of sound can have many different frequencies mixed. A musical tone's timbre is characterized by its harmonic spectrum. Sound in our environment that we refer to as noise includes many different frequencies. When a sound signal contains es, distributed equally over the audio spectrum, it is called white noise.
Read more about this topic: Frequency Spectrum
Famous quotes containing the word sound:
“One of those sound slumbers which, lasting in reality some half hour, seem to the sleeper to have been protracted for three weeks or a month.”
—Charles Dickens (1812–1870)
“Content thee, howsoe’er, whose days are done;
There lies not any troublous thing before,
Nor sight nor sound to war against thee more,
For whom all winds are quiet as the sun,
All waters as the shore.”
—A.C. (Algernon Charles)
“It is easy to face Death and Fate, and the things that sound so dreadful. It is on my muddles that I look back with horror—on the things that I might have avoided.”
—E.M. (Edward Morgan)