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:
“In journalism it is simpler to sound off than it is to find out. It is more elegant to pontificate than it is to sweat.”
—Harold Evans (b. 1928)
“Strike on your drummes, spread out your ancyents!
Sound out your trumpetts, sound out amaine!”
—Unknown. Sir Andrew Barton. . .
English and Scottish Ballads (The Poetry Bookshelf)
“The freedom to make a fortune on the Stock Exchange has been made to sound more alluring than freedom of speech.”
—John Mortimer (b. 1923)