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Active noise reduction

Discussion in 'Cases, Modding & Electronics' started by Wakou, Oct 18, 2008.

  1. Wakou New Member

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    For some years now there have been available active anti-noise headphones, Sennheiser being one of the best known makers, unfortunately they would be a very expensive investment for a non music lover like me. These work by producing a mirror of the ambient noises' waveform, shifting it by a half-phase and injecting it into the speakers in a headphone, this having the effect of significantly attenuating the noise heard by the wearer. It would seem to me that all the processing and sound handling capability needed to do this is available on a PC or even a lap-top, so a microphone attached to a headphone to sample the ambient noise and hey presto!

    :):):):):):):):):):):):):):)
    near silence on the train, plane, at a truckstop or in my own ******* living room when (post-deaf IMO) Mrs Wakou insists on scanning the TV to find the noisiest channel available (war film, western etc) and having the volume at industrial injury level ("so I can follow it from the kitchen").

    Could anyone here please point me to where this might be discussed, and where someone could advise me as to whether this is possible?

    Alternatively, the circuitry for such a device would surely not be all that complicated, anyone like to have a stab at one, or know where a circuit diagram could be found?
     
    Last edited: Oct 18, 2008
  2. Binge

    Binge Overclocking Surrealism

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    So you're trying to get a device that completely dampens the sound that would normally come out of your case with the same tech that active noise reducing headphones use? Cool idea!
     
  3. Wakou New Member

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    Not really, Binge, I was hoping that the processing and sound power in a PC could be used to generate the Anti noise, and feed it back in to some headphones, so that I cpuld be in a "quiet bubble" whilst using my computer in a noisy environment
     
  4. Kursah

    Kursah

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    Ear Plugs are a way cheaper investment! :D

    Kind of a neat idea, but I don't think many would use it just because when many put on headphones/heatsets it's to listen to something thru them. But if you do find something to get the job done, ya better post it up here!

    :toast:
     
  5. DrPepper

    DrPepper The Doctor is in the house

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    I want one for school :eek:
     
  6. Exavier

    Exavier New Member

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    I just have nice in-ear sennheiser ones I got for £15 on amazon...they fit so tight they block everything else out.
    but as for actual dampening, I want to see how this goes..
     

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