Problem with low piezo signal

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Re: Problem with low piezo signal

Postby ignotus » Fri Sep 26, 2014 1:13 pm

Glad you got it sorted. Now... enjoy!
If it ain't broken... fix it until it is.
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Re: Problem with low piezo signal

Postby privatex » Mon Sep 29, 2014 8:56 pm

Thank you, your tips was priceless.
I built couple of cymbals (old acoustic to electronic) and they work pretty good. They are one zone with choke option (piezo + m.switch).
I set head/bow pin as piezo and rim/edge as switch and it just don't work, neither ''dual or 3way Yamaha'' or ''3 way roland''. I set h/b and r/e both as piezo and still wont work. On the end I had last option head/bow as single piezo and it works.
Ok my cymbals work now but I just dont know how this happened and does someone have similar behavior of MD!?
One more thing, yesterday I uploaded latest firmware and have couple of problems with MD. Some inputs give me some very strange signals, I never saw MD to behave like that so I downgrade my MD to the previous version which work without any problems.
My megadrum slowly reveals his potential :) There's bunch of questions in my mind now, but hey I will crush them.

Update: Does anyone set up snare pad positional sensing in AD2/?/map window/positional?
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Re: Problem with low piezo signal

Postby ignotus » Tue Sep 30, 2014 3:27 pm

privatex wrote:I set head/bow pin as piezo and rim/edge as switch and it just don't work, neither ''dual or 3way Yamaha'' or ''3 way roland''. I set h/b and r/e both as piezo and still wont work. On the end I had last option head/bow as single piezo and it works.
Ok my cymbals work now but I just dont know how this happened and does someone have similar behavior of MD!?

To get the edge switch to choke, set it to switch and then you need to find the right threshold value. This could be anywhere between 20 - 40. I just raise the value 1 by 1, pressing the edge every time until I see the midi activity LED lighting up when you press it and again when you release it, and leave it there.
privatex wrote:Update: Does anyone set up snare pad positional sensing in AD2/?/map window/positional?

Are you asking if anyone uses it, or about how it's done?
If it ain't broken... fix it until it is.
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Re: Problem with low piezo signal

Postby privatex » Tue Sep 30, 2014 6:09 pm

I tried and it works but for one zone crash-splash cymbals with choke I decided to stay with one piezo on head/bow and conductive material on rim/edge pin ( I had some problems with switch again, aftertouch, non consistent...), and dont need switch, set rim/edge as piezo too and it work without any mistakes. For ride today I done some tests and it work but with regular setings in MD ofc (piezo,piezo,switch).
For AD2, no I mean how do they do that and is there any benefit for ps? I tried and AD2 learn only center, sidestick and rimshots but there's bunch of notes.
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Re: Problem with low piezo signal

Postby ignotus » Tue Sep 30, 2014 6:38 pm

Yeah, I used to set the edge as piezo (using just a strip of conductive material, not a switch) but it was unreliable and now have it set as switch with the threshold at 36, works great as a touch switch - whatever works for you is just fine I suppose.

As for positional sensing, I use AD1 but I suppose it's similar in AD2: in the map window, scroll down to Snare CCPos Op<->Sha, click on 'learn' and tap the head. That's it. You then have to set or 'learn' the notes for rim and rimshot.

I have PS on but to be honest with my (crappy) playing style I don't really make much use of it, apart from the fact that AD doesn't really change the pitch of the sound that much - it's noticeable, but maybe not as much as on a real snare. Still, if it's part of your playing style to move the sticks around the head, you'll appreciate the feature - I reckon it's very, very cool for a DIY project to be able to pull it off as well as it does.
If it ain't broken... fix it until it is.
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Re: Problem with low piezo signal

Postby privatex » Tue Sep 30, 2014 8:32 pm

Yeah I tried and finaly got diferent sounds with ps but it work good with single strokes and very slow (single stroke) roles, on higer speeds comes problems so at the end I back to the previus config. When I play buzz rolls on the edge of mesh head I got big change in sound but when I start to move to the center sound stays same on higer speeds, with just single strokes it work perfect, ps for true (but hey even td30 cant bring reall snare drum sounds and zones).
I like all sounds of snare drum and you are right I need to explore all posibilities of this device to learn once for all.
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Re: Problem with low piezo signal

Postby privatex » Wed Oct 01, 2014 10:15 am

Well last night I wrote post in hurry without good old 'couple of hours test', after fine tuning it work better. However you are right, ps is not crucial in this moment so I'll 'get over'.
Last edited by privatex on Mon Jan 05, 2015 10:37 am, edited 1 time in total.
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Re: Problem with low piezo signal

Postby dmitri » Wed Oct 01, 2014 2:32 pm

If a new hit is within Note Off delay then MegaDrum uses the last calculated position. The reason for this is that in fast rolls signal waveforms are affected by the the signal from a previous hit and so position can be reliably calculated only on the first hit of a roll.
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Re: Problem with low piezo signal

Postby privatex » Thu Oct 02, 2014 9:25 am

dmitri wrote:If a new hit is within Note Off delay then MegaDrum uses the last calculated position. The reason for this is that in fast rolls signal waveforms are affected by the the signal from a previous hit and so position can be reliably calculated only on the first hit of a roll.

Exactly, that's precise explanation. I notice that when I broke a roll on the moment and hit just single fast stroke before next roll it work perfect. I hope that this will be overcomed in the future somehow.
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Re: Problem with low piezo signal

Postby privatex » Sat Oct 04, 2014 1:12 pm

Why noteoff cannot be set lower? From my experience positional sensing add on board is waste of money and time. Is is just a project in try, I was excited in first wave but after few days I figured out it is totally useless. It just make mess on my snare drum and without buzz's, pressed roles and double stroke roles I won't even consider for further usage.
Also I find on forum that in official MD manual jack wiring is not right, topic is from 2008 I think and you told than that you will fix it dmitri. Now all my jacks are wrong wired and I have to solder them all again, hmmm.
Forum is in mess, its so hard to find infos so for new owner of this device its very hard to do all little tricks and start to play.
I dont know maybe someone like to mess with megadrum configurations from month to month but for me my practice drum routine is much more important, as I said its very hard to put all things together.
In few easy steps all problems for MD users will disappear.
First a little bigger MD manual with all details and new chapter of how to successfully configure device.
Than better explanation of ps add on board (I was read almost all forum and never find that infos about note off, rols and useless part of your offer). I was able to find high branded machine and get a real picture of what I get here, nothing...khm.
No offense, I just honestly express my thoughts and experience with megadrum so far.
Dont get me wrong I'm ok with megadrum, I buy one and I play on one and its ok (electronic drum as any other machine, good for quiet practise but acoustics are THE papa!).
And what the hell happened with dates of new posts and with calendar on entire forum? o.O
No misunderstands please just facts from real life!
Regards
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