DSP Robotics Support

Hello gang,

If I wanted to control the gain of a amp (normal 0 to 1) via midi note data, how would I go about it. For example say you played middle C, make that put out a value of .5 to the amp and so on. This is just an example, NOT saying I would always want middle C to put out .5, but would rally like it to be adjustable across the keyboard. Hope this makes sense.

That's it! Thanks, BobF.....

Maybe look at the VCA primitive.

Hi RJ,

Thanks for the feedback, but I have tried that and it does NOT work.

Do you have a working example?

Later then, BobF.....

This is one idea I used for a project.


Here's the example schematic:

Hi again RJHOLLINS,

Thank is exactly what I used. Can you show me where and how the midi data controls this!

Thanks once again, BobF.....

Hi BobF,

I'm not exactly sure what you need to do ... my guess ...

You want to use MIDI data to set an audio volume. If so ...

Audio data into the knob [if you want to use it], is scaled from 0-1

MIDI data is 0-127

There are some 'scaling' modules that will correlate one range of values to a different range. That is, values from 0-127 will be re-scaled into 0-1 values.

These scalers might be on the FS forum. I know we found them on the old SM forum.

If this is what you want to do ... If you need the 'scalers', let me know and I can post here for you.

This assumes I understand your question

I think Bob wants what is called Keyboard Tracking or Key Tracking or Key Follower. Have a search with those keywords and you will find lots of info

Hi once again RJHOLLINS,

Yes you are correct, scaling is what I believe I need. If you have something, sure I would like to see it.

Really appreciate your help here.

----------------------------------------------------------------

Hi adamszabo,

THANKS ALSO, I will do a search.

Later then, BobF.....

Hi BoBF

Here are a few 'scaling' modules from my toolbox. These are User contributions that I collected.

Thanks RJHOLLINS,

I will look at these soon.

Tare care, BobF.....