Change panorama position of a noteOn Message

[Frankbeat]

@Christoph-Hart said in Change panorama position of a noteOn Message:

Changing the sample properties like this might lead to a few edge case issues (eg. if you load a sample map in a preset and then change the pan it might cause order-of-initialization issues), also it's a very heavyweight operation so you can't automate it.

The stereo FX with scripted voice start modulator solution looks like this:

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relevant code (you might need to scale the range according to what you want):

function onVoiceStart(voiceIndex)
{
	// Fetch the note position (the Message class will hold a reference to 
	// the note on that started the voice) and scale it to -1 ... 1
	local normPos = (Message.getNoteNumber() - 64.0) / 64.0;
	
	// Apply the spread
	normPos *= SpreadKnob.getValue();
	
	// the function needs to return a modulation value between 0 and 1
	// that will be applied as constant to the stereo position of the voice.
	return (normPos + 1.0) * 0.5;
}

With this solution, does the knob have to be added inside the Script Modulator? So I have to add the same knob to each of my Samplers?

[Christoph Hart]

Yes and it might make sense to connect it to an external script if you have more than two samplers to keep the redundancy low.

[ulrik]

@Christoph-Hart this seems to be a better way, and cleaner!

[ulrik]

@Christoph-Hart And using this way, would it be possible to set up a mixer for just one sampler, gain and pan for each note?

[Frankbeat]

Wow, this works like a charm! Thank you very much!
This way, it is even easier to set the right spread amount across the mapping range. I helped myself a little by printing it to console, since you wrote it has to return values between 0 and 1.

function onVoiceStart(voiceIndex)
{
	local normPos = (Message.getNoteNumber() - 45) / 45;
	normPos *= spreadKnob.getValue();
	local newNormPos=(normPos) * 3.21;
	// dev state only: Console.print(newNormPos);
	return newNormPos;
}

The noteNumber 45 is my lowest mapped key here, but I don't know how I came to end up with this modified formula omitting the +1. But not to complain – it works.