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:
“The hills are alive with the sound of music, with songs they have sung for a thousand years.”
—Oscar Hammerstein II (1895–1960)
“I thought when I was a young man that I would conquer the world with truth. I thought I would lead an army greater than Alexander ever dreamed of. Not to conquer nations, but to liberate mankind. With truth. With the golden sound of the Word. But only a few of them heard. Only a few of you understood. The rest of you put on black and sat in chapel.”
—Philip Dunne (1908–1992)
“Alex: I don’t mean to sound like a snob.
Cory: You couldn’t sound like anything else.”
—Blake Edwards (b. 1922)