Re: [LAD] [OT] DIY Trigger - Piezo to MIDI to PC
On Sat, 2008-10-18 at 02:29 +0800, Ray Rashif wrote: > Yes, I'm sticking the piezo onto the skin/head internally. As for the > beater hitting directly, I don't know if that's harmful but it's worth > a try. > While you are at it, would you mind doing a small experiment for me? and put the piezo on the moving pedal rather than on the resonant skin. The idea here being that the pedal is always acoustically dead whereas in the worst, most jazzy case the skin may vibrate for quite some time. ___ Linux-audio-dev mailing list Linux-audio-dev@lists.linuxaudio.org http://lists.linuxaudio.org/mailman/listinfo/linux-audio-dev
Re: [LAD] [OT] DIY Trigger - Piezo to MIDI to PC
Oh wow, every single one of you starting from Nedko have just saved me hours of research! Thanks so much guys, extra points to Andy for his walkthrough with bonus code, Folderol for citing the exact reference material and Josh for landing the correct device (eroktronix) =P Yes, it's obvious yet I didn't contemplate the piezo-DI-soundcard route. I feel so stupid now, but thanks to the prompt response here I have something to work on right away. Initially, and also the reason why I was so lost with this is because, I wanted to bypass a full-fledged microcontroller eg. Arduino (since I'm only dealing with one channel) but still have MIDI via a very simple breadboard _before_ reaching the computer. Credit this to my lack of understanding. Yes, I'm sticking the piezo onto the skin/head internally. As for the beater hitting directly, I don't know if that's harmful but it's worth a try. I'm positioning it behind the skin opposing the surface area where the beater hits, instead of placing it "off-axis" somewhere else nearer to the rim (common when triggering externally). In any case, I've got to get the signal up and running before I can actually toy around. I like the threshold-detector-software suggestion, but as mentioned, it'll be a safer bet going with Arduino as most of the electronics are taken care of. This list is awesome. ___ Linux-audio-dev mailing list Linux-audio-dev@lists.linuxaudio.org http://lists.linuxaudio.org/mailman/listinfo/linux-audio-dev
Re: [LAD] [OT] DIY Trigger - Piezo to MIDI to PC
On Fri, 2008-10-17 at 18:09 +0300, Nedko Arnaudov wrote: > I know a way to implement this. I've read it somewhere in > Internet. piezo output is limited using zener diode (you want to do this > anyway because next electronic components may get burned out). Then you > can measure width of the impuse. Wider the impulse is, more "attack" you > have. In midi terms drum attack becomes midi note on velocity parameter. > > > > > I understand the concept and design roughly and I can move on by reading the > > construction manual (refering to edrum's DIY guide), but at the moment I'm > > looking for a quick way to build a trigger as I need it asap (and no $$ for > > a real trigger kit/module). This might be terribly obvious but: Plug the piezo into the microphone input on your computer? ___ Linux-audio-dev mailing list Linux-audio-dev@lists.linuxaudio.org http://lists.linuxaudio.org/mailman/listinfo/linux-audio-dev
Re: [LAD] [OT] DIY Trigger - Piezo to MIDI to PC
"Ray Rashif" <[EMAIL PROTECTED]> writes: > And regarding MIDI, if I want to take into consideration dynamics, and let > the piezo trigger MIDI messages with varying attack information, how would > it be done? So depending on the voltage generated, it'd be a MIDI-ON but the > final message to the computer (audio interface) would be a "MIDI-ON && > ATTACK == 75" sort of logic. Sorry for the noobish description, have just > started to dabble into (audio/midi) electronics. I know a way to implement this. I've read it somewhere in Internet. piezo output is limited using zener diode (you want to do this anyway because next electronic components may get burned out). Then you can measure width of the impuse. Wider the impulse is, more "attack" you have. In midi terms drum attack becomes midi note on velocity parameter. > > I understand the concept and design roughly and I can move on by reading the > construction manual (refering to edrum's DIY guide), but at the moment I'm > looking for a quick way to build a trigger as I need it asap (and no $$ for > a real trigger kit/module). > ___ > Linux-audio-dev mailing list > Linux-audio-dev@lists.linuxaudio.org > http://lists.linuxaudio.org/mailman/listinfo/linux-audio-dev -- Nedko Arnaudov pgpaYycTdWo8K.pgp Description: PGP signature ___ Linux-audio-dev mailing list Linux-audio-dev@lists.linuxaudio.org http://lists.linuxaudio.org/mailman/listinfo/linux-audio-dev
[LAD] [OT] DIY Trigger - Piezo to MIDI to PC
Sorry for the very random subject, but I figured I'd need all the help I can get. I've read about this for a _little_ while (time constraints..arghhh) on the WWW, and I've posted on www.edrum.info too. In case anyone here has better/fast/helpful suggestions/advice/shizznit, I'm sort of cross-posting: I just want one trigger, which I'll use for the kick drum. As such, I'm interested to know if there are premade boards for the MIDI conversion. Basically all I need is something which can take the vibrations and convert them to electrical signals (piezo), and then fed to something else that will convert that electrical signal to a MIDI-ON message, after which I can plug it into the MIDI input of an audio interface or use a MIDI-USB adapter to plug in to a USB port. And regarding MIDI, if I want to take into consideration dynamics, and let the piezo trigger MIDI messages with varying attack information, how would it be done? So depending on the voltage generated, it'd be a MIDI-ON but the final message to the computer (audio interface) would be a "MIDI-ON && ATTACK == 75" sort of logic. Sorry for the noobish description, have just started to dabble into (audio/midi) electronics. I understand the concept and design roughly and I can move on by reading the construction manual (refering to edrum's DIY guide), but at the moment I'm looking for a quick way to build a trigger as I need it asap (and no $$ for a real trigger kit/module). ___ Linux-audio-dev mailing list Linux-audio-dev@lists.linuxaudio.org http://lists.linuxaudio.org/mailman/listinfo/linux-audio-dev
