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:
“Every now and then, when you’re on stage, you hear the best sound a player can hear. It’s a sound you can’t get in movies or in television. It is the sound of a wonderful, deep silence that means you’ve hit them where they live.”
—Shelley Winters (b. 1922)
“How little it takes to make us happy! The sound of a bagpipe.—Without music life would be a mistake. The German even imagines God as singing songs.”
—Friedrich Nietzsche (1844–1900)
“It is not the sound made by victors, or the sound made by losers; it is the sound of revelers that I hear.”
—Bible: Hebrew, Exodus 32:18.