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:
“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)
“It is far easier for the proverbial camel to pass through the needle’s eye, hump and all, than for an erstwhile colonial administration to give sound and honest counsel of a political nature to its liberated territory.”
—Kwame Nkrumah (1900–1972)
“Sound, sound the clarion, fill the fife!
Throughout the sensual world proclaim,
One crowded hour of glorious life
Is worth an age without a name.”
—Thomas Osbert Mordaunt (1730–1809)