Hotspot and general triggering issues

[Piezo]

Well, one thing I found out is that in the case of my diy-drum I have to set threshold pretty low (around 1 or 2) in order to get the trigger-sensitivity-results that I want. Problem is that dyn-time and dyn-level are already put to max level. So I'm forced to decide between unwanted double-triggering and bad sensitivity...

[dmitri]

How bad is sensitivity? On my Drumtec sliding a stick (or a finger nail) over mesh surface causes low level triggering across the hole area - more in the centre, less by the rim. Yet I don't get false double triggering and I have DynLevel at 12 and DynTime at 32. On Drumtec I do use a 10k resistor in line on the signal wire to "cool" it down.

[Piezo]

Hard to describe. Do you own a Roland mesh-head? When I slightly tap the head with my stick (really slightly) I only start to get an appropriate response when I move behind the Roland logo saying "Head made by Remo". Up to that point many taps do not trigger a signal.

I know drummers don't tap their drums. But I want my drum to be configured perfectly. Today I again tested a Roland PD 105 connected to a TD-20 module: Sensitivity was just spot on. On every part of the rim.

[dmitri]

I had PD-125 for testing a year ago and it was triggering perfectly fine. I don't have any other Roland pads but I have a Drumtec 14" and a Pintech 10".

1. So, are you testing PD-105 with MegaDrum again?
2. When you slide your finger nail over the mesh, does it trigger low velocity notes?

[Piezo]

1. Nope I am not. I just brought it back to the music-store I rent it from and then plugged it into a TD 20 to see how it triggers.
2. Only around 3 cm away from the rim. http://cms.rolandus.com/assets/images/p ... nt_gal.jpg

Around when it says "head made by Remo": this is where I start to get a finger-nail-scratch-signal. Threshold is set to 1 currently.

[dmitri]

1. Is your DIY pad not too "hot"?
2. Can you make a video showing what light hits in the centre produce triggering and which do not produce near the rim?
3. Are comparing triggering the PD-105 on TD-20 with triggering the DIY pad on MegaDrum?
4. Can you take your DIY pad to the shop to see how it triggers with TD-20?
5. Are the curves on TD-20 and MegaDrum set equally, especially near low velocity range? If you compare by ear, double triggering may be masquaraded by exponential or S-type velocity curve. Default curve on MegaDrum is logarithmic.
6. When you have double triggering with the Threshold set low, what is the velocity of the main note and what is the velocity of the false second note?

[angr77]

5. Just a comment. On Roland gears...the default is linear, but the fact is that it is absolutly not linear. This is based on deep tests comparing MD with TD. What we have seen from these test trying to compare the algoritms is that raising the shiftlevel to 16-24 and even the compression level to 2-3 will copy the Rolands curve especially for the low type of hits.

I would argu that the TD's has a more of a S type curve type even if they claim and say it is linear. So creating a custom made s curve where the lowest hit starts at e.g. 24 could also be a solution. Anybody ready for creating a complete Roland Curve?

Anders

[Piezo]

1.) Don't know. Its around 900-1000. However Anders said Roland pads are not known to be too hot. (I'm scared of the diagnose "too hot". I really don't have the skills to cool my pad down.)


2.) http://www.youtube.com/watch?v=bo3ewszt ... e=youtu.be - sorry for bad quality. When you turn your speakers up, you will hear me tapping the meshhead before it starts to trigger a drum-sample. That's the dead zone near the rim I'm talking about.
Also, when I start to hit the drum a little harder you can hear false double-triggering.


3.) I don't get what you're trying to ask there.


4.) Not before next week....unfortunately...


5.) I don't know what the curve is on a TD 20. My diy-pad currently is set to "linear".

6.) Will have to look into that a little later


Thanks again for your great willingness to help!!

Anybody ready for creating a complete Roland Curve?

I would if I had the skills. This would be so awesome!!!! I think many users would profit from such a thing!




As for the pd-105 settings:


They're the same as the ones you have for your 682-Drum. Except for Hilevel being set to around 880 and Threshold being set to 4.

This is what I did and it seemed to work for me. Didn't have the pad long enough to optimize it, though...

[dmitri]

1.) Don't know. Its around 900-1000. However Anders said Roland pads are not known to be too hot. (I'm scared of the diagnose "too hot". I really don't have the skills to cool my pad down.)

If it's going over 900 it is too "hot"

2.) http://www.youtube.com/watch?v=bo3ewszt ... e=youtu.be - sorry for bad quality. When you turn your speakers up, you will hear me tapping the meshhead before it starts to trigger a drum-sample.

Sorry, but I don't see tapping without a sound. It looks like every tap triggers.

That's the dead zone near the rim I'm talking about.
Also, when I start to hit the drum a little harder you can hear false double-triggering.

Was it the same with PD-105? Also, as I said it many times, if the pad is too "hot" you have to "cool" it down otherwise you won't be able to get rid of double triggering and you won't get the full dynamic range.

3.) I don't get what you're trying to ask there.

I'm talking about comparing likes for likes.

[Piezo]

It's hard to make out. But putting sensivity-issues aside - Is there an easy way (and I mean easy for unskilled dumb-ass people like me, not a genius like you) to cool the pad down?


Well I was hoping, that I would get similar trigger-results with my diypad connected to megadrum as I would get with a pd-105 connected to a TD 20. That's at least what everybody says of megadrum...


With the pd-105 it wasn't the same. I have to say, however, that the pd 105 is 10" whereas my pad is 12".

I'm using the same piezos as the PD 105 has. How come the pd 105 wasn't too hot?