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:
“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)
“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)
“I am afraid that the animals regard man as a creature like themselves which has lost its sound animal wits in a most dangerous way—that they regard him as the deranged animal, as the laughing animal, as the weeping animal, as the unhappy animal.”
—Friedrich Nietzsche (1844–1900)