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:
“Let not the sound of shallow foppery enter
My sober house.”
—William Shakespeare (1564–1616)
“He is said to have been the last Red Man
In Acton. And the Miller is said to have laughed
If you like to call such a sound a laugh.”
—Robert Frost (1874–1963)
“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)