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Poor mans noise reduction ear-buds. Many advantages over ($200-$300)Bose: cheaper (pennies on the dollar) and smaller, allows mobility, no batteries required. Using existing (JVC) noise canceling Ear-buds, use Flents (or other manufacturers) spongy-type earplugs in place of the JVC plug. If you have heat-shrink, you can replace and elongate the JVC tube to allow inserting the Flent's plug better into your ear.
Great for planes, bus/car, mowing the grass, loud work environment, etc. Your mp3 player will only require 1/2 volume with these - thereby extending battery life.
Also - See my short 'Video Instructable' for the very same thing.
Step 1Buy a pair of (supposed 'noise canceling') earbuds
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Get some earbuds similar to those shown.
See Wikipedia for more.
Noise cancelling is about cancelling the incoming soundwaves by "adding" the inverse soundwave so you won't hear anything
Noise cancelling is much more difficult as noise reducing because you need knowledge of electronics
If you want to build a real pair of noise cancelling headphones, I found a scheme on homepage.ntlworld.com/Nigel.gough/noise.htm
But it Will Cost more time and money because t
If you want to build some real noise cancelling headphones. i found a scheme on homepage.ntlworld.Com/Nigel.gough/noise.htm
If you have, I found a scheme for a real pair of noise cancelling headphones on homepage.ntlworld.com/nigel.gough/noise.htm
But you will need more time and the components are more expensive as this little piece of foam
1) Rat Shack in-ear isolating headphones, which gave better isolation than the JVC Marshmallows you used but with effectively no bass response. I used Marshmallows everywhere else - less isolation but superior sound.
2) Philips HN100 circumaural active noise cancelling headphones
I'd put the buds in, and the HN100s over them. Music to the buds, HN100s disconnected but with power on. ANC works better than isolation at very low frequencies (jets/turboprops), and passive isolation tends to work better for highs. Best of both worlds, just looks a little funny. :)
I tried to do what you did here 3-4 years ago but failed as I couldn't figure out a decent tubing solution. I never thought of using heatshrink, it's a perfect idea! Note that due to the form factor of the Marshmallows, it may not work with the old HN100 + buds combo. (I don't remember it working comfortably before, the Rat Shack buds stuck out from the ear less.)
Couple of tips from my experience:
1) Make the heatshrink extra long and trim it down later, after you've put the foam on to determine its required length.
2) Before trimming heatshrink or trying to put foam on, MAKE SURE it's cool. Freezer for 15-30 sec works well to ensure this.
3) After punching the hole in the foam, slide it over something that it fits over easily and is solid and squish it down around that item. Believe it or not this will actually make the hold larger as soon as you remove pressure. It makes it easier to slide it over the heatshrink, especially the base where it's shrunk over the end of the bud.
I think I used a 1/8" punch. I'll need to check. I got a "hammer style" punch set at an arts and crafts store. It had three sizes of punch, ???, 1/8, and 3/16 I think. 3/16 proved too loose, 1/8 was perfect if you used the trick in my previous post to get it to go over the base of the tube.
I now have better isolation than the old Rat Shack buds, AND they sound better than the Marshmallows did before.
I wish I'd thought to 'ible this !!
unfortunatly an ebay item...
http://rover.ebay.com/rover/0/e11030.m43.l1123/7?euid=d3c444df82d04e04af30d33d739d26ff&loc=http://cgi.ebay.ca/ws/eBayISAPI.dll?ViewItem%26item%3D250817321899%26ssPageName%3DADME:B:EF:CA:1123