Noise cancellation...

Post by **Sabre** » Wed Jun 28, 2006 11:10 pm

I came across this article which describes how to build your own set of noise cancelling headphones.

The circuit is suprisingly simple, so in a couple of hours, you could have your own set!

chicken n waffles · Post by **chicken n waffles** » Wed Jun 28, 2006 11:19 pm

Post by **Sabre** » Wed Jun 28, 2006 11:23 pm

Funny man... It's not greek to all of us....

chicken n waffles · Post by **chicken n waffles** » Wed Jun 28, 2006 11:28 pm

i wouldn't even know where to begin.

really.

Post by **Sabre** » Wed Jun 28, 2006 11:31 pm

chicken n waffles wrote:i wouldn't even know where to begin.

really.

With one of hte Ops amps probably... That's one of the triangle looking thingys

Libra Monkee · Post by **Libra Monkee** » Thu Jun 29, 2006 3:18 am

Fire hot, tree pretty.

sirwilliam · Post by **sirwilliam** » Thu Jun 29, 2006 6:39 am

I could actually build these at work!

Post by **ElZorro** » Thu Jun 29, 2006 7:30 am

So the first part (left half) we have two channels (stereo) each with two filtering amps. Those take an audio jack as an input, and send the output to a switch and then thru a pot. Then we have a second set of amps, with no filtering, that look to be set up as straight amps. These take an audio jack as an input, but send them thru a pot first, and then the output is a jack... so basically the first part is generating your negative signal from your noise (which comes from a microphone), with a pot for adjusting the amount of cancellation. Second part takes that, adds it to the volume-adjustable audio input and power outputs it to the headphones...

See, program managers can read circuit diagrams.

Mr Kleen · Post by **Mr Kleen** » Thu Jun 29, 2006 9:01 am

Libra Monkee wrote: Fire hot, tree pretty.

zaxrex · Post by **zaxrex** » Thu Jun 29, 2006 10:12 am

I use this for my noise canceling headset!

Post by **Sabre** » Thu Jun 29, 2006 10:51 am