9.4 - What exactly are NoNOISE and CEDAR? How are they used?
Description
This article is from the Audio Professional FAQ, by with numerous contributions by Gabe M. Wiener others.
9.4 - What exactly are NoNOISE and CEDAR? How are they used?
NoNOISE and CEDAR are systems for noise removal. Both of them approach
the same sorts of noise, but use different algorithms and have different
user interfaces, often with differing effectiveness.
Noise can be broken down into several categories:
IMPULSIVE NOISE: Pops, clicks, thumps, snaps.
CRACKLE: The low-level "bacon frying" effect heard on
LPs and 78s.
HISS: Tape hiss, surface noise, amplifier hiss, broadband noise
BUZZ: 60 Hz hum, any other steady-state noise that is relatively
narrow-band.
NoNOISE and CEDAR are two (expensive) techniques for removing many of
these ailments. It is rare that it is possible to remove all of the
problem, nor is it ever possible to remove it with no degradation of
the program material. [Gabe]
Continue to:
My Books
