Definition of Active noise control
Active noise control (ANC), also known as noise cancellation (NC), or active noise reduction (ANR), is a method for reducing unwanted sound by the addition of a second sound specifically designed to cancel the first. The concept was first developed in the late 1930s; later developmental work that began in the 1950s eventually resulted in aviation headsets with the technology becoming available in the late 1980s. The technology is also used in road vehicles, mobile telephones, earbuds, and headphones.
Terms mentioned above
Related terms
Vehicle audio
Vehicle audio, also known as car multimedia, is equipment installed in a car…
Active sound design
Active sound design is an acoustic technology concept used in automotive vehicles to…
Sound masking
Sound masking is the inclusion of generated sound (commonly, though inaccurately…
Acoustic foam
Acoustic foam is an open-celled foam used for acoustic treatment. It attenuates airborne…
Balanced audio
Balanced audio is a method of interconnecting audio equipment using balanced interfaces…
Sound attenuator
A sound attenuator, or duct silencer, sound trap, or muffler, is a noise control…
Soundrangers
Soundrangers was the first online sound library of original sound effects and production…
Victor Orthophonic Victrola
The Victor Orthophonic Victrola, released in 1925 by Victor Talking Machine Company, was…
Multitrack recording
Multitrack recording (MTR), also known as multitracking, is a method of sound recording…
Questions people ask
Real questions from the Stack Exchange community – follow a link to read the discussion.
- dynamic gain control for active noise cancellation circuit · Electronics SE
Frequently asked questions
What is Active noise control?
Active noise control (ANC), also known as noise cancellation (NC), or active noise reduction (ANR), is a method for reducing unwanted sound by the addition of a second sound specifically designed to cancel the first.
Sources & credits
- Wikipedia: Active noise control – CC BY-SA 4.0
- Image by Marekich – CC BY-SA 3.0