Category:dbx (noise reduction)

dbx 

family of noise reduction systems
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Instance of	invention model series
Subclass of	noise reduction
Discoverer or inventor	David E. Blackmer
Has part(s)	Blackmer gain cell
Manufacturer	Dbx, Inc. NEC Panasonic Holdings Corporation Rohm
Start time	1974
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dbx is a family of noise reduction systems developed by the company of the same name.

The most common implementations are dbx Type I and dbx Type II for analog tape recording and, less commonly, vinyl LPs. A separate implementation, known as dbx-TV, is part of the MTS system used to provide stereo sound to North American and certain other TV systems. The company – dbx, Inc. – was also involved with Dynamic Noise Reduction (DNR) systems.

Technologies marketed as dbx Type III and dbx Type IV were not dbx noise reduction. The former was a proprietary single-ended DNR, the latter a proprietary digital recording technology. Rarely used, dbx Type 0 denotes historic uses of dbx, Inc. compressors for tape noise reduction purposes.