Generalized acoustic energy density based active noise control in single frequency diffuse sound fields

2014 ◽  
Vol 136 (3) ◽  
pp. 1112-1119 ◽  
Author(s):  
Buye Xu ◽  
Scott D. Sommerfeldt
Keyword(s):  
Energy Density ◽  
Noise Control ◽  
Active Noise Control ◽  
Acoustic Energy ◽  
Single Frequency ◽  
Sound Fields ◽  
Active Noise ◽  
Acoustic Energy Density

Energy density active noise control in an earthmoving machine cab

2005 ◽  
Vol 118 (3) ◽  
pp. 1951-1951
Author(s):  
David C. Copley ◽  
Ben Faber ◽  
Scott Sommerfeldt
Keyword(s):  
Energy Density ◽  
Noise Control ◽  
Active Noise Control ◽  
Active Noise

scholarly journals Active Noise Control Experiments using Sound Energy Flu

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
Uli Krause
Keyword(s):  
Noise Control ◽  
Active Noise Control ◽  
Sound Field ◽  
Acoustic Energy ◽  
Control Approach ◽  
Active Noise ◽  
Acceleration Sensors ◽  
Radiated Sound ◽  
Set Up ◽  
Feed Forward Controller

AbstractThis paper reports on the latest results concerning the active noise control approach using net flow of acoustic energy. The test set-up consists of two loudspeakers simulating the engine noise and two smaller loudspeakers which belong to the active noise system. The system is completed by two acceleration sensors and one microphone per loudspeaker. The microphones are located in the near sound field of the loudspeakers. The control algorithm including the update equation of the feed-forward controller is introduced. Numerical simulations are performed with a comparison to a state of the art method minimising the radiated sound power. The proposed approach is experimentally validated.

scholarly journals Zone-based active noise control for an aircraft passenger seat

2021 ◽  
Author(s):  
Wintta Ghebreiyesus
Keyword(s):  
Noise Control ◽  
Active Noise Control ◽  
Head Tracking ◽  
Sound Fields ◽  
Passenger Seat ◽  
Active Noise ◽  
Forward Difference ◽  
Prediction Technique ◽  
Virtual Sensing ◽  
Adaptive Lms

The goal of this research is to improve zone-based local active noise control for an aircraft passenger seat using head tracking and virtual sensing methods. Broadband diffuse sound fields are analyzed in order to determine the level of attenuation around the passenger’s ears. The virtual sensing methods which were evaluated from literature include the virtual microphone technique, the forward difference prediction technique, and the adaptive LMS moving virtual microphone techniques. In addition to virtual sensing, a new methodology for integrating zone-based technologies with existing local ANC techniques has been developed. The virtual sensing simulation and head tracking measurements can be used to verify this methodology.

Active noise control simulations using minimization of energy density in a mock helicopter cabin

2006 ◽  
Vol 120 (5) ◽  
pp. 3287-3287
Author(s):  
Jared Thomas ◽  
Stephan P. Lovstedt ◽  
Jonathan Blotter ◽  
Scott D. Sommerfeldt ◽  
Norman S. Serrano ◽  
...  
Keyword(s):  
Energy Density ◽  
Noise Control ◽  
Active Noise Control ◽  
Active Noise

Active minimization of acoustic energy density in enclosed sound fields

2002 ◽  
Vol 112 (5) ◽  
pp. 2302-2302
Author(s):  
Scott D. Sommerfeldt ◽  
Benjamin M. Faber
Keyword(s):  
Energy Density ◽  
Acoustic Energy ◽  
Sound Fields ◽  
Acoustic Energy Density
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