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:
“When the sheep are in the fauld, and the kye at hame,
And a’ the warld to rest are gane,
The waes o’ my heart fa’ in showers frae my e’e,
While my gudeman lies sound by me.
Young Jamie lo’ed me weel, and sought me for his bride;”
—Lady Anne Lindsay (1750–1825)
“Al: Ain’t you gonna look back, Ma? Give the old place a last look?
Ma Joad: We’re goin’ to California, ain’t we? Alright then, let’s go to California.
Al: That don’t sound like you, Ma. You never was like that before.
Ma Joad: I never had my house pushed over before. Never had my family stuck out on the road. I never had to lose everything I had in life.”
—Nunnally Johnson (1897–1977)
“The spotted hawk swoops by and accuses me, he complains of my gab and my loitering.
I too am not a bit tamed, I too am untranslatable,
I sound my barbaric yawp over the roofs of the world.”
—Walt Whitman (1819–1892)