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 is easy to face Death and Fate, and the things that sound so dreadful. It is on my muddles that I look back with horror—on the things that I might have avoided.”
—E.M. (Edward Morgan)
“I am already kindly disposed towards you. My friendship it is not in my power to give: this is a gift which no man can make, it is not in our own power: a sound and healthy friendship is the growth of time and circumstance, it will spring up and thrive like a wildflower when these favour, and when they do not, it is in vain to look for it.”
—William Wordsworth (1770–1850)
“I don’t want to listen; your words sound like the truth but the truth is probably a sin.”
—Jacques Roumain (1907–1945)