Definition
The active control of sound is realized with active noise reduction systems. These systems are made up of actuators, sensors and digital signal processing. Unlike classical passive sound control the active control of sound is especially effective at low frequencies. Active noise reduction systems are able to reduce unwanted sound with a minimum of added mass and volume which makes them useful for lightweight applications for example in the automotive or aerospace industry.
Abbreviations
- AMP:
-
Amplifier
- ANC:
-
Active noise control
- ANVC:
-
Active noise vibration control
- ASAC:
-
Active structural acoustic control
- AVC:
-
Active vibration control
- CFRP:
-
Carbon fiber reinforced plastics
- CROR:
-
Counter-rotating open rotor
- EF:
-
Eigenfrequency
- EMI:
-
Electromagnetic interference
- FIR:
-
Finite impulse response filter
- FRF:
-
Frequency response...
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References
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Misol M, Algermissen S, Rose M, Monner HP (2018) Aircraft lining panels with low-cost hardware for active noise reduction. In: Joint conference acoustics 2018
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Misol, M., Algermissen, S., Haase, T. (2020). Active Control of Sound, Applications of. In: Altenbach, H., Öchsner, A. (eds) Encyclopedia of Continuum Mechanics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-55771-6_282
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DOI: https://doi.org/10.1007/978-3-662-55771-6_282
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