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:
““Obedience” and “law”Mthat is what one hears in all moral sentiments. But “caprice” and “freedom” might yet be the last sound that morality makes in the end.”
—Friedrich Nietzsche (1844–1900)
“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)
“America is a hurricane, and the only people who do not hear the sound are those fortunate if incredibly stupid and smug White Protestants who live in the center, in the serene eye of the big wind.”
—Norman Mailer (b. 1923)