Active Sound Noise Control (ANC) Task
Jump to navigation
Jump to search
A Active Sound Noise Control (ANC) Task is a sound noise control task (that reduces unwanted sounds) that is a electrically powered task.
- …
- Counter-Example(s):
- See: Sound, Audio Quality, Audio Signal Processing.
References
2020a
- (Wikipedia, 2020) ⇒ https://en.wikipedia.org/wiki/Active_noise_control Retrieved:2020-9-10.
- Active noise control (ANC), also known as noise cancellation, 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.
2020b
- (Wikipedia, 2020) ⇒ https://en.wikipedia.org/wiki/active_noise_control#Active_vs Retrieved:2020-9-10.
- Noise control is an active or passive means of reducing sound emissions, often for personal comfort, environmental considerations or legal compliance. Active noise control is sound reduction using a power source. Passive noise control is sound reduction by noise-isolating materials such as insulation, sound-absorbing tiles, or a muffler rather than a power source.
Active noise canceling is best suited for low frequencies. For higher frequencies, the spacing requirements for free space and zone of silence techniques become prohibitive. In acoustic cavity and duct based systems, the number of nodes grows rapidly with increasing frequency, which quickly makes active noise control techniques unmanageable. Passive treatments become more effective at higher frequencies and often provide an adequate solution without the need for active control.
- Noise control is an active or passive means of reducing sound emissions, often for personal comfort, environmental considerations or legal compliance. Active noise control is sound reduction using a power source. Passive noise control is sound reduction by noise-isolating materials such as insulation, sound-absorbing tiles, or a muffler rather than a power source.