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:
“Close friends contribute to our personal growth. They also contribute to our personal pleasure, making the music sound sweeter, the wine taste richer, the laughter ring louder because they are there.”
—Judith Viorst (20th century)
“Monte Beragon: When I’m close to you like this, there’s a sound in the air like the beating of wings. Do you know what that is?
Mildred Pierce: No, what?
Monte Beragon: My heart, beating like a schoolboy’s.
Mildred Pierce: Is it? I thought it was mine.”
—Ranald MacDougall (1915–1973)
“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)