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 a tale
Told by an idiot, full of sound and fury;
Signifying nothing.”
—William Shakespeare (1564–1616)
“the children call, and I
Thy shepherd pipe, and sweet is every sound,
Sweeter thy voice, but every sound is sweet;
Myriads of rivulets hurrying through the lawn,
The moan of doves in immemorial elms,
And murmuring of innumerable bees.’”
—Alfred Tennyson (1809–1892)
“He hath a heart as sound as a bell and his tongue is the clapper, for what his heart thinks, his tongue speaks.”
—William Shakespeare (1564–1616)