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:
“It’s precisely the disappointing stories, which have no proper ending and therefore no proper meaning, that sound true to life.”
—Max Frisch (1911–1991)
“It is far easier for the proverbial camel to pass through the needle’s eye, hump and all, than for an erstwhile colonial administration to give sound and honest counsel of a political nature to its liberated territory.”
—Kwame Nkrumah (1900–1972)
“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)