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:
“I don’t want to listen; your words sound like the truth but the truth is probably a sin.”
—Jacques Roumain (1907–1945)
“How good bad music and bad reasons sound when we are marching into battle against an enemy.”
—Friedrich Nietzsche (1844–1900)
“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)