Driftel

Echoes that wander as they fade.

Warm, wandering echo. Repeats bend in pitch, soften and saturate as they fade.

● Freeorg.sournd.delay.driftel

Hear it

Hear its studio demo. The live engine, with every parameter, is in your download.

Details

Engine id: org.sournd.delay.driftel
Category: Delay
Type: Tape
Licence: Free, closed library (use it in any plugin)
Version: 1.0.0
Parameters: 9
Latency: none
Tail: 60 s
Sidechain input: no
Channels: mono or stereo

Parameters

The id is the C ABI parameter id and the JUCE parameter id (as a decimal string).

Id	Key	Name	Min	Max	Default	Unit	Taper
0	`time_ms`	Time	20	1000	340	ms	log
1	`feedback`	Feedback	0	0.98	0.45	-	linear
2	`wow`	Wow	0	1	0.3	-	linear
3	`flutter`	Flutter	0	1	0.25	-	linear
4	`drive`	Drive	0	1	0.35	-	linear
5	`tone_hz`	Tone	800	12000	3800	Hz	log
6	`low_cut_hz`	Low cut	20	800	110	Hz	log
7	`spread`	Spread	0	1	0.3	-	linear
8	`mix`	Mix	0	100	30	%	linear

How it is made

Original sOURnd design: modulated fractional delay (sinusoidal wow with band-limited random drift, sinusoidal flutter with jitter), soft tanh saturation on record, two-pole low-pass tone and one-pole low cut on each repeat inside the feedback loop.

CMake

cmake

juce_add_module(path/to/sournd_engine)
target_include_directories(MyPlugin PRIVATE path/to/include)
target_link_libraries(MyPlugin PRIVATE sournd_engine path/to/libsournd_cabi.a)

Three lines. Full steps: JUCE quick start.

C++ (JUCE)

cpp

#include <sournd_engine/sournd_engine.h>

sournd::SourndEngine engine { "org.sournd.delay.driftel" };
juce::AudioProcessorValueTreeState parameters { *this, nullptr, "Parameters",
    sournd::SourndEngineParameters::createLayout (engine) };
sournd::SourndEngineParameters bridge { engine, parameters };

// prepareToPlay
engine.prepare ({ sampleRate, (juce::uint32) maximumBlock, 2 });
bridge.prepare (sampleRate);
setLatencySamples ((int) engine.latency());

// processBlock
bridge.apply ((uint32_t) buffer.getNumSamples());
juce::dsp::AudioBlock<float> block { buffer };
engine.process (juce::dsp::ProcessContextReplacing<float> { block });

// get/setStateInformation: hold getCallbackLock() around saveState / loadState,
// so state work never overlaps processBlock (full example: /docs/juce/)

Plain C

sournd_engine *e = NULL;
if (sournd_engine_create("org.sournd.delay.driftel", &e) == SOURND_OK) {
    sournd_engine_prepare(e, 48000.0, 512);
    sournd_engine_set_param(e, 0, 340); /* Time */
    sournd_engine_process(e, in, out, 2, frames);
    sournd_engine_destroy(e);
}

Ask your AI

Paste this into your coding assistant:

Prompt

Add the sournd engine org.sournd.delay.driftel to my JUCE plugin. Follow https://sournd.com/docs/juce/index.md
and the engine reference at https://sournd.com/engines/driftel/index.md. Expose every parameter through APVTS.