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:
“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)
“Let children know you are human. It’s important for children to see that parents are human and make mistakes. When you’re sorry about something you’ve said or done, apologize! But don’t sound guilt ridden. It is best when parents apologize in a manner that is straightforward and sincere.”
—Saf Lerman (20th century)
“My idea of heaven is eating paté de foie gras to the sound of trumpets.”
—Sydney Smith (1771–1845)