Results 1 to 4 of 4

Thread: Echo Cancellation

  1. #1
    Asleep Now
    Join Date
    Jan 2008
    Location
    UK
    Posts
    615

    Echo Cancellation

    I'm planning on using the PC to provide handsfree kit for the phone. I haven't tried it yet but my understanding based on reading posts is that the echo created when the microphone hears the speakers is a fairly big problem.

    First question is this correct?

    If so it should be possible to build an echo cancellation module that goes in line with the microphone, senses the speaker output, does some sums and provides a clean mic output to the PC.

    So second question - is there already something out there that does this for a sensible price. If there is I don't want to waste a lot of time designing something.

    I realise that there are echo cancelling algorithms built into XP but don't think I could use them on my install. The car it's going in has a Bose amplifier system which constantly tunes the amplifier frequency response and volume as ambient noise in the car changes. Think this would seriously upset any pure software solutions, and I don't really want to rip it out.

    Anyone got any thoughts on this?

  2. #2
    Senior Member Flibblebot's Avatar
    Join Date
    Jun 2006
    Location
    Deepest, darkest Wales
    Posts
    202
    Define "sensible".

    There are noise-cancelling mics available, some motherboards come with them. You can buy the mic and a USB dongle, but I'm not sure how much it costs - take a look here for more info.

    Don't know how well they work though.

  3. #3
    Asleep Now
    Join Date
    Jan 2008
    Location
    UK
    Posts
    615
    Was hoping for something under the 50 mark.

    I'm guessing, based on the lack of response on this, that's it not really as big a problem as I thought so I'll put this on the back burner for now, install with a standard mic and see how it goes.

  4. #4
    Senior Member
    Join Date
    Mar 2008
    Location
    doncaster south yorkshire
    Posts
    186
    well pete the echo can be cancelled by turning the mic volume down in playback ,the bigger problem i have found is getting a good amplified microphone with no distortion and good gain

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. How have people gotten around the echo caller hears??
    By machoman in forum Centrafuse Frontend
    Replies: 6
    Last Post: 04-01-2009, 05:41

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •