Beta testing for a totally new sampling/triggering alg

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Re: Beta testing for a totally new sampling/triggering alg

Postby dmitri » Wed Feb 21, 2024 8:45 pm

What is your mesh pad?
Can you also please post your best settings for the old alg and the new alg for this pad?
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Re: Beta testing for a totally new sampling/triggering alg

Postby ignotus » Wed Feb 21, 2024 9:48 pm

dmitri wrote:What is your mesh pad?

It's a 10" pad with a Roland head and a DIY side-mounted trigger. Here's a pic:
trigger.jpg


Here are my settings for the beta firmware:
snare_settings.png


All I change for the old algo is to lower DynLevel/DynTime to 1/4 for the head (I leave the rim as-is because I don't need really accurate fast triggering for it) and raise the rim threshold to 14 (otherwise it auto-triggers).
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Re: Beta testing for a totally new sampling/triggering alg

Postby dmitri » Wed Feb 21, 2024 10:12 pm

With the new alg, can you please take three photos of the 'Samples Graph' from the LCD?
1. For a light hit.
2. For a medium hit.
3. For a strong hit.
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Re: Beta testing for a totally new sampling/triggering alg

Postby ignotus » Thu Feb 22, 2024 10:21 am

Here you go:

Light:
light_hit.jpg


Medium:
medium_hit.jpg


Hard:
hard_hit.jpg
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Re: Beta testing for a totally new sampling/triggering alg

Postby dmitri » Thu Feb 22, 2024 7:04 pm

ignotus wrote:This may seem strange, but I can actually set DynLevel/DynTime lower with the old algorithm than with the beta. With the old one, I can set them at 1/4. With the beta, anything lower than 1/12 causes lots of extra unwanted notes. I can also get better flams and rolls with the old algo.

This is really strange. I have completely opposite results.
Judging by the Samples Graph you posted the pad generates very good clean signals and you have a precision rectifier on this input.
I have a mesh pad with similarly good clean signals. With the old alg and DynLevel/DynTime lower than 3/36 I get double triggering for pretty much every hit.
As soon as I enable the new alg double triggering is gone and I cannot see any missed hits in pressrolls. And I can lower DynLevel/DynTime to 1/4 without introducing any double triggering.

With the bad mesh pad, which I was doing most of the testing with, I cannot lower DynLevel/DynTime so much. With the old alg it has to be at least 7/32 but with the new alg I still can lower it to 2/16.

I wonder why we get completely opposite results. I'm totally puzzle:( Do you have other type mesh pads?
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Re: Beta testing for a totally new sampling/triggering alg

Postby dmitri » Fri Feb 23, 2024 12:01 am

Updated beta firmware in the first post.
No changes to the new sampling/triggering alg but massive speed up for color LCDs handling.
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Re: Beta testing for a totally new sampling/triggering alg

Postby dmitri » Tue Feb 27, 2024 11:30 pm

Updated beta firmware in the first post.
A bit more speed up for color LCDs handling.
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Re: Beta testing for a totally new sampling/triggering alg

Postby dmitri » Thu Feb 29, 2024 10:43 pm

Updated beta firmware in the first post.
Speed increase for Samples Graph for waveform types 0-3. Waveform types for Samples Graph pages are now:
0 - pure levels as registered before Gain adjustment and normalization. For dual piezo/piezo pads signals for both zones will be overlayed with different colors.
1 - same as 0 but split between head (in the top) and rim (in the bottom)
2 - normalized against HighLevel levels after Gain adjustment. For dual piezo/piezo pads signals for both zones will be overlayed with different colors.
3 - same as 2 but split between head (in the top) and rim (in the bottom)
4-7 - same as above but with older slower refresh rate (full clear of the samples graph) just as 0-3 types were in previous versions.
0-3 types may cause samples graph corruption for very fast rolls.
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Re: Beta testing for a totally new sampling/triggering alg

Postby dmitri » Thu Mar 14, 2024 8:40 pm

Updated beta firmware in the first post.
1. 3way Roland type cymbals now should work correctly. Tested with a real 3way Roland type cymbal.
2. Changed Threshold calculations. It now uses Gain setting for calculating raw Threshold so that it now closely matches Threshold setting in the old alg.

As far as I can see I implemented all functionality from the old alg except automatic Edge/Bell switch Threshold detection.
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Re: Beta testing for a totally new sampling/triggering alg

Postby dmitri » Wed Mar 27, 2024 10:42 pm

Updated beta firmware in the first post.
Implemented Edge/Bell switch inputs Thresholds autosetting (<Set All EdgeSw> and <Set All BellSw> as per https://www.megadrum.info/content/misce ... s-settings )
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