Contact Mic
Jan 21, 2011 at 19:15 | Post a Comment 
I made my first contact mic today.
I damaged it slightly when I was playing with it, but hasn't affected the sound at all. I still need to find something to house it in, and I need an easy way to attach it to vertical surfaces with out it sliding off. I read some where about someone using magnets to do it, which I may do. But what about non metallic surfaces?
Got any tips?
I've got a lot of piezo discs lying around, so I'm going to be making more of these and experimenting with them. In fact, next time I'll be building one with a FET buffer preamp, following the schematic and advice on this page (thanks to Durk Kooistra for sharing this with me). I'll also be attempting to make a hydrophone. ^.^
Here's a little recording I made with it by pressing it against a USB fan:
Download: MP3/WAV