Wombat Sawmill

**glenn k** · 30th March 2009, 08:41 PM

I was looking at some that had two microphones on the mouth piece on omni and the other directional. Thats what the light aircraft ones would have to have, but they are of no use unless you want to use them for communication. It's simply to stop transmitting background noise.
We once made them but seeing we were working in trees the boom mic was a real trouble so we increased the amplification and put the microphone in the ear muff worked well and simpler circuit boards.

**BobL** · 30th March 2009, 09:37 PM

Originally Posted by Arthur Dyason

For light aircraft you can buy headphones which cancel out the noise. The way they work is to sample the background noise and playback the negitive of it. Works realy well for the person wearing the head gear. Not so good for those next door. I have tried them for mill workers. they sort of work but would need frequency modifications and are a few each.

I have two sets of general noise canceling phones. They work OK on planes but they're very ordinary (ie hopeless) with chainsaws and both my passive Peltors beat them hands down. Come to think of it the peltors would work better on planes but the thought of wearing them for 24 hours is a bit much.

**pjt** · 31st March 2009, 03:27 AM

I put in ear plugs and use earmuffs to be sure to be sure

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