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        MIDI-OX >> Questions and Discussion >> Using MIDI-OX to control Equalizer APO
        
(Message started by: Jose_Hidalgo on Oct 19^th, 2022, 2:16pm)

Title: Using MIDI-OX to control Equalizer APO
Post by Jose_Hidalgo on Oct 19^th, 2022, 2:16pm

Hi everybody,

I'm thinking of getting an USB controller with 9 faders and 9 knobs, such as these ones :

https://i.ibb.co/zHTNXRz/maxresdefault.jpg

https://i.ibb.co/w0CTxX2/dfg.jpg

I'd like to use such USB controller to control Equalizer APO in the following way :

First I would define 9 parametric filters. Either using one of EAPO's GUIS (PEACE, Mega Switcher...) or using its config.txt file directly.

Then I would like to use :
- The 9 faders to control the gain for each filter (let's say from +6 to -6 dB)
- The 9 knobs to control the Q factor for each filter (let's say from 1.0 to 5.0)

I'm wondering how I could achieve this.

First I'd need to use MIDI-OX to capture information from all the faders and knobs and identify them. For example fader #1 may for example be CC#12 in MIDI terms.

Then I'd need to convert values from each fader or knob to the right interval :
- For the faders, 0...127 would need to be converted to -6.0...6.0.
- For the knobs, 0...127 would need to be converted to 1.0...5.0.

Then I'd need to pass the values to Equalizer APO in the best/easiest possible way.

Could you guys help me with this ? I'm pretty sure it can be achieved, but I could really use some insights.

Thanks in advance ! ;)

Title: Re: Using MIDI-OX to control Equalizer APO
Post by Breath on Oct 20^th, 2022, 10:47pm

Hi
A quick look at Equalizer APO shows it is only a 'library' or programming building block. You need to have an MIDI application that can hook into it.

So a map of the Midi stream would be...
Controller change -> MIDI OUT -> Midi In -> Needed Application -> Equalizer APO.
You might be able to use the MiidOx scripting (look under Help /Contents ... at the bottom Scripting) to do this.

You can use lots of tools like Python, JScript, C++ etc to create this, but it isn't simple if you are just starting out.
I would look around to see if there are other applications that connect Equalizer APO to Midi.

All the best
Royce