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:
“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)
“It was the unfailing and characteristic sound of those lakes.”
—Henry David Thoreau (1817–1862)
“It is easy to face Death and Fate, and the things that sound so dreadful. It is on my muddles that I look back with horror—on the things that I might have avoided.”
—E.M. (Edward Morgan)