Simplest way of adding a 1 or 2 sample delay to a trigger input?

Jaffasplaffa · December 21, 2021, 5:40pm

Hello

I am working on a hack of a module and I would like to add 1 or 2 samples delay to a trigger input, in code.

I was wondering if there is a function in the VCV “vanilla” code I could use to add this delay, without having to jump through hoops and do it “manually”?

Thanks!

Ahornberg · December 21, 2021, 6:16pm

I would say rack::dsp::RingBuffer should help here.

htLocal · December 21, 2021, 6:17pm

could take some inspiration here Fundamental/Delay.cpp at v2 · VCVRack/Fundamental · GitHub

Ahornberg · December 21, 2021, 6:57pm

Yes, it uses dsp::DoubleRingBuffer.

Jaffasplaffa · December 21, 2021, 7:20pm

Thanks I checked it out

I am no master programmer and for my level it is probably a bit too much, I am not sure I understand how to make it simple.

In the meantime I was looking a bit around and it seems like this module here offers a one sample delay, it seems a bit simpler to me:

github.com

dbgrande/GrandeModular/blob/v2/src/SampleDelays.cpp

#include "plugin.hpp"


struct SampleDelays : Module {
	enum ParamIds {
		NUM_PARAMS
	};
	enum InputIds {
		A_INPUT,
		B_INPUT,
		C_INPUT,
		NUM_INPUTS
	};
	enum OutputIds {
		A1_OUTPUT,
		A2_OUTPUT,
		B1_OUTPUT,
		B2_OUTPUT,
		C1_OUTPUT,
		C2_OUTPUT,

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Guess I have to mess a bit around and see what I can make out of both ways.

Thanks again