Building a cheap hydrophone
I’m planning to make a hydrophone. A quick search on Google and I’ve got an interesting document entitled “A cheap sensitive hydrophone for monitoring cetacean vocalisations“.
A piezo ceramic disk, 2 polycarbonate sheets, a ‘o’ ring seal, a few nylon screws, a coaxial cable, some epoxy adhesive and you’re done! The critical step is definitely the soldering of the cable to the piezo disk.
tokoloten » Waterproof test said,
May 7, 2007 @ 7:10 pm
[…] In a previous post, I said I was planning to make a hydrophone… Eventually I built it yesterday! It’s nothing else as a contact microphone embedded into a box actually. It just passed the waterproof test successfully. I haven’t yet checked the sound it produces. I’ll have to find out which are the best post-effects to use on it… resonator, granulator… we’ll see. […]
VilenessFats said,
May 19, 2008 @ 10:11 pm
or you could just dip the piezo in latex coating that you can buy at a hardware store…
… not sure what the quality diference would be