A noise print is part of a technique used in
noise reduction. A noise print is commonly used in
audio mastering
Mastering, a form of audio post production, is the process of preparing and transferring recorded audio from a source containing the final mix to a data storage device (the master), the source from which all copies will be produced (via me ...
to help reduce the effects of unwanted noise from a piece of audio. In this case, the noise print would be a recording of the ambient noise in the room, which is then used in spectral subtraction to set multiple expanders, effectively
gating out those frequencies whilst the signal level in that band is lower than that in the noise print. Many
plugins for studio software can be used to apply noise reduction in this way.
Noise reduction usually results in unwanted
artifacts, sometimes referred to as "twittering" or "birdies". Different algorithms for noise reduction control these artifacts with varying levels of success.
See also
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Dark frame
Darkness, the direct opposite of lightness, is defined as a lack of lighting, illumination, an absence of visible spectrum, visible light, or a surface that absorbs light, such as black or brown.
Human visual perception, vision is unable to di ...
– analogous technique in image noise reduction
Audio engineering
Noise
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