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Noise Cancelling in Software?

doc_verma wonders: "There are directions to build noise-cancelling devices in hardware, but what would it take to create noise cancelling in software? Since computers have a speaker-of-sorts and can possibly have a microphone, why not take the input from the mic, reverse-phase it via software, and output it through the speaker? A noise-cancelling feature would be great to run on servers in a rack. It would also be a great app to run on your laptop when you are on a plane."

7 of 84 comments (clear)

  1. why not... by croddy · · Score: 4, Funny

    why not take the input from the mic, reverse-phase it via software, and output it through the speaker? well, i suppose the howling, squealing feedback would make you forget about the server fans for a few seconds, but i suspect it would just end up giving you a bigger headache in the long run.

  2. My child once talked for eight hours straight ... by joelsanda · · Score: 3, Funny

    ... on a road trip across the West. Eight solid hours of a four year old pontificating. I searched the car high and low for the travel headphones so I could get a break with my MP3 player. Couldn't find them and the only stores for thousands of miles in any direction sold only alcohol, Mormon cookbooks, and knives.

    This is a cool idea.

    --
    The Luddites were ahead of their time.
  3. Loud Noise by DavidLeeRoth · · Score: 5, Funny

    I dont know how to noise cancel, but I know how to create a ton! cat /dev/urandom > /dev/dsp :)

  4. Fenton Silencer by the+eric+conspiracy · · Score: 3, Funny

    You want one of these

  5. Re:My child once talked for eight hours straight . by joelsanda · · Score: 2, Funny

    Your poor child. I hope you have money saved for the therapist.

    Yeah, for me. He got that from his mother.

    --
    The Luddites were ahead of their time.
  6. Re:My child once talked for eight hours straight . by OneDeeTenTee · · Score: 5, Funny

    the only stores for thousands of miles in any direction sold only alcohol, Mormon cookbooks, and knives.

    Sounds like a bad day for the Mormons if you're hungry.

    --
    Stop the world; I need to get off.
  7. Re:Why did this get approved? by AthenianGadfly · · Score: 2, Funny

    What I want, is a noise cancelling dome, so two people can go under it, talk, and have no one outside hear anything, that'd be cool.

    You know, something like that should be possible to create, using a special new noise-cancelling material. I think they call it "concrete".