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Poor man’s chassis ear

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This topic contains 4 replies, has 3 voices, and was last updated by Kuku Kuku 3 years, 2 months ago.

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  • #654439
    Kuku
    Kuku
    Participant

    While trying to figure out where does my “clunks” are coming from, I’ve used a some really cheap microphones, cords and USB sound devices off ebay that turned out to work really well, (see the attached image)

    My shopping list was –
    1$ USB Sound device
    1$ Microphone (even comes with clip so it’s easy to hook to suspension parts)
    1$ 3meters cord so you wind your wire all the way to the notebook in the cabin
    Multiple that by the amount of USB ports you have and there you go – my version of a chassis ear

    I’ve hooked up my mics to the left side hub, right side hub and right side top strut (I only have 3 USB ports for the matter)
    Just by looking at the sound waves you immediately know that the clunks are coming from the right side hub area, further investigation (I hooked them to the upper and lower control arms and shoved one mic into a hole in the hub) turned out to be a bad wheel bearing after carefully listening to each channel….

    Good luck!

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  • #836439
    Bryan
    Bryan
    Participant

    Awesome. I joined just to be able to comment on this.

    I ordered four of each.

    Curious: what program did you use? Is that a Mac screen or a Windows screen?

    #836465
    Kuku
    Kuku
    Participant

    I’m glad you found it useful, the software is called “Audacity”, You can find it here : http://audacityteam.org/

    #885126
    Steve
    Steve
    Participant

    I also thought this was awesome. I’ve purchased 4 usb sound devices and the mics and tried to set it up but audacity appears to only want to receive input from 1 device at a time. I can’t see a way to associate a device with a track to achieve what you have done. My searches on audacity suggest it needs more hardware. Any more tips?

    #885903
    Kuku
    Kuku
    Participant

    I did not use Audacity to record, Since I’m using Linux this is the command line I ran to record all three channels to different files :

    #/bin/bash
    gst-launch-1.0 -v alsasrc device=hw:1,0 ! audioconvert ! vorbisenc ! oggmux ! filesink location=/tmp/frontdiff.ogg &
    gst-launch-1.0 -v alsasrc device=hw:2,0 ! audioconvert ! vorbisenc ! oggmux ! filesink location=/tmp/transfer.ogg &
    gst-launch-1.0 -v alsasrc device=hw:3,0 ! audioconvert ! vorbisenc ! oggmux ! filesink location=/tmp/reardiff.ogg

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