Very cool - just what I was looking for. I think the real question is going to be how it will work in a car audio environment. I wonder what running such a signal through the standard hi power car audio amp and filters would produce and what happens with a system where you have residual hum from RF interference.
I guess the only way would be to build it and try it out :) On 6/28/06, Greg Sevart <[EMAIL PROTECTED]> wrote:
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 >
-- Brian
