Encyclopedia > Pink noise

  Article Content

1/f noise

Redirected from Pink noise

1/f noise is a signal or process with a frequency spectrum such that the spectral energy density is proportional to the reciprocal of the frequency. 1/f noise is also called pink noise or flicker noise.

In particilar, there is equal energy in all octaves. In terms of power at a constant bandwidth, 1/f noise falls off at -3dB per octave.

1/f noise is found in a wide variety of physical phenomena. Examples include electronic devices, financial markets, astronomy, and human coordination.

The human auditory system, which uses a roughly logarithmic concept of frequency, perceives equal magnitude at all frequencies.

Graphic equalizers[?] also divide signals into bands logarithmically and report power by octaves; audio engineers put pink noise through a system to test whether it has a flat frequency response in the useful spectrum.

This is a stub. If you know much about the characteristics or applications of pink noise, feel free to fix it.

See also:

External links



All Wikipedia text is available under the terms of the GNU Free Documentation License

 
  Search Encyclopedia

Search over one million articles, find something about almost anything!
 
 
  
  Featured Article
Canadian Music Hall of Fame

... Joni Mitchell 1982 Neil Young 1983 Glenn Gould 1986 Gordon Lightfoot 1987 The Guess Who[?] 1989 The Band 1990 Maureen Forrester[?] 1991 Leonard Cohen 1992 ...

 
 
 
This page was created in 31 ms