Random sounding audio noise containing all frequencies in the audio spectrum tuned to the response of the human ear. Used with a Spectrum Analyser to set equalisation equipment for a large PA installation. However, the human ear is still a better judge of how a system sounds. See also White Noise.
Test tone featuring equal amount of energy per octave of bandwidth
A type of audio signal used for measurement and analysis. Pink noise is derived from white noise (all frequencies in the human hearing range at equal amplitude), by filtering it to attenuate the volume of the signal at a rate of 6dB per octave. This compensates for the doubling of the number of frequencies per ascending octave. This produces a signal which has equal energy at every octave. See White Noise
Electronically generated sound that has equal energy in each 1/1 octave band, and 1/3 octave band. It is often used as the source signal for the design/tuning of a conventional masking sound system using loudspeakers installed within a ceiling plenum, when the ceiling tile has low high-frequency TL or the plenum is shallow. Pink noise is always perceived to sound "hissy" compared to masking sound.
standard noise used for the acoustic measurements, simulating airborne noises emitted in building.
A random audio signal that has equal energy across its frequency range.
This is random noise with equal energy per octave of sound.
An audio signal with equal energy at all octaves. Used to "tune" a sound reinforcement system so it provides a natural, musical sound. see white noise
A type of random noise that contains an equal amount of energy per octave. The bands 100-200, 800-1600, and 3000-6000 all contain the same amount of energy. Since pink noise is based on octaves rather than individual frequencies, there is no increase in energy in the high octaves. Because of this, and because Real Time Analyzers (RTA) tend to look at octave or 1/3 octave ranges, pink noise is very useful for measuring the frequency response of audio equipment, as well as for determining room response for sound reinforcement applications.
A noise signal whose spectrum level decreases at a 3-dB-per-octave rate. This gives the noise equal energy per octave.
Pink noise is random noise where the power is spread uniformly over a specific spectrum of frequencies, such as 20-20,000 Hz for audio. It sounds like a hiss, much like tuning between FM stations. For a theoretically infinite spectrum it is called white noise.
Random noise having a continuous spectrum and energy distributed equally on a percentage-bandwidth (e.g. octave, 1/3-octave) basis. Commonly used for audio measurements since the energy distribution is close to that of music. See: White Noise
a random noise source having a flat amplitude response over each octave frequency band (cf. white noise)
Equal amounts of sound energy in each octave of the sound spectrum A perfect test source for frequency response measurement since it's perfectly flat and any dips or bumps can be attributed to room acoustics or speakers when displayed on a real-time analyzer like our C-101 or R-130.
In acoustics, noise in which there is equal power per octave.
Expressed in dBA, this is an assessment of the sound insulating properties of a building material over specified standard frequencies, which represent general activity noise, when equal levels of power are applied at each frequency.
A broad-spectrum sound exhibiting equal sound energy per octave. In order to maintain equal energy, the volume is held constant throughout the entire output range.
a variant of white noise. Pink noise is white noise that has been filtered to reduce the volume at each octave. This is done to compensate for the increase in the number of frequencies per octave. Each octave is reduced by 6 decibels, resulting in a noise sound wave that has equal energy at every octave. [more...
Random noise (hiss) that has equal energy in each octave.
a test signal comprising noise that has been shaped to provide equal intensities of sound in each octave band. Pink noise is used for test signals because its spectral balance closely compensates for the frequency sensitivity of the human ear.
Pink noise is noise that has equal energy in each octave.
Noise containing all frequencies in equal proportions.
Noise such as flicker noise which varies inversely with frequency.
Electronically generated noise that has equal energy per octave. Essentially has the same amount of energy per frequency in relation to what the human ear can hear. The amount of energy drops 3dB per octave. Compare with White Noise.
Artificially created noise for testing equipment. Contains equal energy in each octave band.
Sound with all frequencies perceptible to the human ear reduced to an equal energy level.
Pink noise , also known as 1/f noise, is a signal or process with a frequency spectrum such that the power spectral density is proportional to the reciprocal of the frequency. The name arises from being intermediate between white noise (1/f0) and red noise (1/f2, more commonly known Brown or Brownian noise).
