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 dreadful sound could the Rover hear,
A sound as if, with the Inchcape Bell,
The Devil below was ringing his knell.”
—Robert Southey (1774–1843)
“He’s made a harp of her breast-bane,
Whose sound wad melt a heart of stane.
He’s ta’en three locks o’ her yellow hair,
And wi’ them strung his harp sae rare.”
—Unknown. Binnorie; or, The Two Sisters (l. 41–44)
“My idea of heaven is eating paté de foie gras to the sound of trumpets.”
—Sydney Smith (1771–1845)