Re: gEDA-user: buzzing board

[John Griessen <john@xxxxxxxxxxxxxx>]

DJ Delorie wrote:

>> Rather than trying to find out what is buzzing, can you find out
>> what is not buzzing, or make the problem worse to make it esier to
>> find?
> 
> So far, I haven't been able to affect the sound in any useful way,
> just a few useless ways.

The buzzing's audible, you said.  You could put small rattly things on 
surfaces to detect where the motion is largest by making other harmonics 
suddenly apparent.  Sound power is coming from motion...   Think snare 
drum.   What have you got that's like glass beads suspended on 
monofilament line?  That would have a snare drum effect when lightly 
dragged across your board.

Like an ultra-low-tech microphone-preamp-FFT-display-analysis chain
that uses your eyes-ears-brain and a simpler snare drum tool instead.

If you have on old Victrola with bamboo needles, you could take the head 
off and feel around with it for some amplification of the local 
vibrations...  Steel needles might be trouble...

John Griessen

-- 
Ecosensory



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