I found this article last night when researching headphone amps to drive my
HD580's...
http://www.headwize.com/projects/noise_prj.htm
Could be of use if you do this.
Greg
----- Original Message -----
From: "Brian Weeden" <[EMAIL PROTECTED]>
To: "hwg" <[email protected]>
Sent: Wednesday, June 28, 2006 7:59 PM
Subject: [H] Project idea - noise canceling in autos
I noticed that on a few of the new Hondas the are offering noise
cancelling technology. Essentially, 2 small mics (one in the front
and one in the back) take in the ambient noise in the vehicle. This
is fed into the stereo system and a 180 degree out of phase signal
passed out of the speakers. It is supposedly smart enough to not
filter any music you might have playing and it works whether you have
music coming out of the stereo or not.
I think this would be a great hack/mod for us hardware types. I
recently used a pair of noise canceling headphones for a flight to NZ
and they worked great, so I know the technology has become fairly
cheap and portable. Theoretically, I know it is possible to do this.
Anyone have any thoughts on this or are interested in working on this
as project? I would compare it to those of us years ago that were
building car MP3 players long before the iPod or satellite radio came
along.
--
Brian
