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:
“As far as I’m concerned, “whom” is a word that was invented to make everyone sound like a butler.”
—Calvin Trillin (b. 1935)
“In spite of all her faults her name was so holy to him that it had never once passed his lips since her death, except in low whispers to himself,—low whispers made in the perfect, double-guarded seclusion of his own chamber. “Cora, Cora,” he had murmured, so that the sense of the sound and not the sound itself had come to him from his own lips.”
—Anthony Trollope (1815–1882)
“Blame but thyself that hast misdone,
And well deserved to have blame;
Change thou thy way so evil begun,
And then my lute shall sound that same:
But if till then my fingers play
By thy desert their wonted way,
Blame not my lute.”
—Sir Thomas Wyatt (1503?–1542)