Entity: WHITE-NOISE
White noise refers to a heterogeneous mixture of sound waves extending over a wide frequency range, often heard as a hissing sound. It is a noise signal with a uniform frequency spectrum over a wide range of frequencies, resulting in a low, humming sound from many combined frequencies.
WHITE-NOISE
Etymology
The term 'white noise' originated from its characteristics resembling white light, which contains all colors of the spectrum in equal intensity.
Definition
White noise is a type of noise that has effectively equal energy intensities at all frequencies within a frequency range of interest, typically heard as a hissing sound.
Historical Context
White noise has been used in various fields such as sound masking, relaxation, and aiding sleep. It has also been studied in the context of signal processing and acoustics.
Cultural Significance
White noise is often associated with calming effects and is used in sound machines to help people sleep. It has also been explored in music production and experimental art.
Related Concepts
- Pink Noise: A type of noise with a frequency spectrum that decreases as the frequency increases.
- Brown Noise: A type of noise with a frequency spectrum that decreases by 6 dB per octave.
See Also
A type of noise that has effectively equal energy intensities at all frequencies within a frequency range of interest, typically heard as a hissing sound.