Piezo contact mic resonance comparison
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- čas přidán 27. 01. 2021
- A comparison between a resonance of a diy piezo with no added weight (''naked'' element), diy piezo covered with hot glue, and JrF C-series piezo. All contact mics were plugged into Radial Engineering StageBug SB-4 Piezo preamps, and recorded with a Focusrite Scarlett 6i6 2n Generation sound card with the same gain on each channel.
The spring is superb with “A” tuned transducter work like an music instrument.
that was unbelievably satisfying..
same
This was a surprisingly useful presentation. I have a couple of hobby projects utilising piezzo mics (hydrophone and horror-box) and I knew bare piezzo mic overcompensates on high frequencies in regards to what i want, but there is no data on how much to insulate the mic (versus the surface versus the material versus the resonant chamber) for more balanced output. I intended to stick mine on top of the insulation tape, but from your test I prefered the audio from the hot glue backed mic better. Thanks! 👍
The "naked" and hot glued elements combined sound just like a stethoscope.
The large spring reverb sounds awesome
Second one sounds best to me
On of my fav tools is the LOM Audio Geofón I bet you would like them. They are stupid sensitive geophone sensors really go on the super low end and I bet paired with a Piezo would rock. Thanks for sharing.
I have the LOM Geofon and love it! I’ve put it on everything so far, and they do work best in combination with a good piezo.
thanks for the vid, very useful
from the video, the bare one sounds closest to human ear hearing. what's your thought?
How to turn an ordinary buzzer into the most professional surface contact microphone possible? Just a 34 mm piezo disk alone provides how many dB? How much can it amplify a sound or noise? Thank you very much.
Hey, sou in order to make a really good sounding contact mic you will have to think about these things: impedance matching (using a preamp), physical construction of the mic (to eliminate resonance), shielding from electromagnetic interference (best done with copper tape, although I never use it). You can use a regular piezo disc, or a buzzer. IDK how much dB amplification you will get, but with the right setup it will be able to amplify really quiet sounds, such as ants walking :) I would say that number one most important thing is to use a preamp, there is a few commercial piezo preamps, and a lot of DIY options. Check these links out for more information:
www.musicofsound.co.nz/blog/the-first-rule-of-contact-mic-club
www.zachpoff.com/resources/building-contact-mics/
www.logosfoundation.org/g_texts/Orfeus/preamps/piezo_disks.html
@@tindozic1221 Excellent. I'll check now. And I can't wait to get to work. Thanks for the advice.
If you use operational amplifiers as your preamp, you can select the gain as well as the input/output impedance by changing the values of resistors you use.
Nice experimentation! Phil Studio approved! ^-^
By the way, amazing piezo pre-amp. I'm thinking maybe on designing one, could be a great project!
@@ThePhilStudio hey check out logos foundation piezo preamp guide, amazing! www.logosfoundation.org/g_texts/Orfeus/preamps/piezo_disks.html
I would be very interested to do diy video where you show how you made your piezo.❤
hi, I am very late with my response, but there is a lot of videos here how to make one, or you can follow instructions such as this www.zachpoff.com/resources/building-contact-mics/
Very useful! Thank you!!!
Do you have a collection somewhere with all the sounds that you've recorded in .wav (or .aiff/.flac)?
I was hoping you’d stretch the spring out and take turns attaching the mic to the spring (daub if glue?) and then striking the spring.
Interesting hearing the sound of very long steel cable (suspended) being struck.
More please.
Dude, that's amazing! Does it really make it sound better if you cover it with glue?!
Interesting
I really dont know what to do with that information but thanks for sharing
I'm confused. What makes those taps sound so different?
are the piezzo homemade ? the second one with glue in the middle sounds great to me
yes, the first two are homemade, the third one is a JrFC-series contact mic
thanks ! (sorry, i didn't saw it was on the description)
do you consider the JrFC-series contact mic as a good / better one for the price ?
@@bbburito for sure. Jrf c series has les of handling noise and less audible resonance compared to these diy ones.
How you amplified the signal from the piezoelectric elements?
All contact mics were plugged into Radial Engineering StageBug SB-4 Piezo preamps, and recorded with a Focusrite Scarlett 6i6 2n Generation sound card with the same gain on each channel.
@@tindozic1221 Thanks for the explanation.
The middle one seems to give the fullest sound to me, what is it?
just a diy piezo with some hot glue on it