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Vol 2 # 03  
Wednesday 20 April 2011
In the domain of active noise control, it is an interesting story of reversals. Small is big. Low-frequency environments require big, ‘active’ treatment. Hence, it is of great importance to make the big treatment set-ups lightweight and small in size so that the ‘wavelength’ is matched.

So much spoken about them- what are low-frequency noisy environments, after all?

Here is a brief:
• Exhaust mufflers used in internal combustion engine
• Headphones used inside an aircraft
• Headphones used in an aircraft cabin/cockpit noise reduction
• Headphones used in an auto/moto racing
• Ambulances
• Dishwashers
• Vibration isolators used to silence engines
• Vibration isolatiors used to protect electronics from vibration and       shock
  
There are of course more. However, these are the most common active noisy environments humans’ ears frequent with. Apparently, the application areas are more on industrial front – driven primarily by hearing safety concerns – though other areas such as electronics and home too are slowly getting active. Cost of treatment remains the main deterrent though.

Having known the sources of active noise, it is pertinent to know how the domain is classified for ease of address and solution. No more complexities. Watch this space next week...
 
Noizkon - the coming together of Anutone and Kinetics USA for a quieter world... a peaceful existence. Know more from the Noizkon Guide or NG | View online | Download pdf |
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Anutone’s Noizkon loops e-noise every Wednesday. If you have missed previous issues please visit www.anutone.com/infobin/enoise.html
 
Let me know what you feel about our ‘enoise’, looped to you every Wednesday.

A Siddharthan
Manager - Noizkon
Siddharthan
+9198 4549 6741
siddharthan@anutone.com

Praveen
+9198 4593 2079
praveen@anutone.com
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