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I do electro-acoustic music, and I want to use it for a lot of different application.
My first test will be a test for a circus creation. I want to try to amplify a wood floor which will vibrate under Cyr wheel’s movement.
the second test will be the string of a funambulist.–Fabien, Montreuil France
“I’m a sound designer and do a lot of sound fx recording with lots of different mics, including contact mics and hydrophones. I was on a video game shoot last week and one of the guys had one of your contact mics that he had built; of course mic junkie that I am, I had to have one but with no time before my next job decided to get the pre-built version. I’m also intrigued with the reference to hydrophones in the piezo explanation paragraph.”
— John F, Santa Monica, CA
I am trying to make a pocket size mic, preamp, amp, and speaker combo, that can be placed on a reasonably resonant wooden floor that will pick up and amplify tap dancing. As is so often said in life, it is easy to make one that works, but it is difficult to make one that works well.
A piezo disc into a 2N5457 JFET as a high impedance preamp, and an LM386 chip as an amplifier, output to the little speaker, kinda works. (Instructions are in various places on the internet.) At least it makes sounds like someone doing something with their shoes on the floor, but a tap dance amplifier, it is definitely not. Same thing when it is setting on the sounding board of a piano: like you are playing thru some weird effects.
So I ordered the Cortado mic and preamp kit today and am excited about soldering it up and seeing how it works. For the money, it will have to be better than what I’ve put together so far. It seems like properly coupling the contact mic to the floor will take a lot more trial and error to get a decent sound. I am looking forward to learning!The Tap Dance Mic project morphed quite a bit (seemed inevitable) but turned out pretty cool. The Cortado electronics are inside the case, along with a pair of LM386 amp circuits. More info in the support section of the forum.
Lloyd
[IMG]http://i226.photobucket.com/albums/dd79/loyd500/Cortado/TapMicAmp_zpsr8fy3cxj.jpg[/IMG]
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