Problem setting MD parameters

[dmitri]

Complete change of subject...
Dmitri I'd like to know how much the "All gain Low" decreases the gain.

I do have one hot pad (my damn snare of course) but since my other pads are not as hot as my snare, I'd like to know exactly how much I should increase the gain input for my individual pads in order to get a "Gain 0" equivalent.

The difference in sensitivity between the minimum gain (with 'All gain Low') and the maximum gain is about 2.5 times in voltage levels.

Also, the new AltFalseTrSupp works! I mean it did allow me to decrease the Retrigger a little, but as for the "dynlevel" I dont see the difference.

With my pads I have very clear difference between DynLevels 0 and 6. Setting it lower I improve fast rolls playability and setting it higher I improve false triggering suppression. If doesn't make difference for you then I can only presume that your pads have very short 'after hit vibration', which is obviously not the case, or that your pads have very long 'after hit' vibration and MegaDrum is not able to cope with it no matter what you set in DynLvl (and DynTime as well).

[gastric]

Some quick comments on AltFalseTrSupp via firmware 20090504.

• I'm unable to properly control double/ghost triggers without this feature enabled. That's even on my 8" DIY acoustic tom.
• With the AltFalseTrSuppfeature enabled, and with with Retrigger/DynLevel/DynTime at their absolute minimums, I'm unable to get any type of fast hits registered. For example, a simple free drop test loses most of the low velocity buzzing hits at the end. However, slow single hits now register a single trigger so it's a huge improvement there.

I've attached audio and MIDI for a quick drop test I did on my 14" DIY snare with Roland 2-ply mesh head, crossbar-and-cone piezo, and with my hand gently laid on the left side of the snare head to dampen it slightly (which helps eliminate double/ghost triggering). I can re-do without my hand on there as well.

First part of the file includes drops with AltFalseTrSupp on, then off, for comparison.

http://www.cgraham.com/chris/music/edrums/MegaDrum snare drop test - Alt on then off.MID
http://www.cgraham.com/chris/music/edrums/MegaDrum snare drop test - Alt on then off.mp3


With some direction I'd be happy to provide whatever technical details I can that would help you such as pad outputs (I have instrument inputs, line level inputs, and non-preamped insert inputs I could use to record raw piezo output), MIDI triggering, etc.

[dmitri]

Before going any further, please provide all settings for the input in question.

[kimouette]

http://www.cgraham.com/chris/music/edrums/MegaDrum snare drop test - Alt on then off.MID
http://www.cgraham.com/chris/music/edrums/MegaDrum snare drop test - Alt on then off.mp3

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[Rubis]

Highlight the whole line and copy it to a web browser. The forum broke the link because of the spaces.

[kimouette]

Highlight the whole line and copy it to a web browser. The forum broke the link because of the spaces.

I'm so damn slow! Thanks Rubis. Of course it works!

[dmitri]

Before going any further, please provide all settings for the input in question.

And also, when you list all the settings also provide a recording of 'free bouncing stick' and a fast 'right-left-right-left' roll for each set of settings.
I also presume that the pads you've built produce reasonably good signals, i.e. don't have too long 'after hit' vibration.

[gastric]

I'll try to provide this information tonight. Note I'm absolutely not a drummer. So single slow hits and drop tests are my forte at this point. But I'll do my best.

As far as the triggers/pads themselves I can make no guarantee as to their 'after hit' vibration or any other quality. But being mesh heads they do vibrate, though based on my experience the 2-ply Roland head has much less vibration than the 1-ply DIY mesh heads I have.

It would seem most ideal if we could separate the trigger/pad from MD to analyse it's raw output. However, I have no oscilator just a DAW interface with instrument/line-level/insert-level inputs. It's too bad MD couldn't somehow output some sort of additional input diagnostic data that we could use to scrutinize what's going on.

[dmitri]

But being mesh heads they do vibrate, though based on my experience the 2-ply Roland head has much less vibration than the 1-ply DIY mesh heads I have.

What is you experience based on for these particular pads?

[gastric]

My experience is only with the Alesis Trigger IO. And with that module I would have to increase Retrigger significantly to eliminate double/ghost triggering. I'm absolutely not suggestiong I want to pose any Trigger IO VS MegaDrum challenges. But I'd be happy to try to generate some data via the Trigger IO if you're at all interested.

Note I've really done nothing to my trigger/pads at all regarding taming their output. I do generate Auto HighLevels above 900, though not above 1000. I've posted a variety of questions and observations in the "gain" thread hoping to better understand the true mechanics behind gain and it's direct effect on performance.