commit 3ec7f22bd727f95c5c33ce6670288c401b9881c5
parent d246972fe9bde35058ee854fc15aa5977c7194b0
Author: Matt Demanett <matt@demanett.net>
Date: Sun, 19 Nov 2017 16:27:37 -0500
Work-in-progress Noise module.
Diffstat:
6 files changed, 142 insertions(+), 0 deletions(-)
diff --git a/res/Noise-src.svg b/res/Noise-src.svg
Binary files differ.
diff --git a/res/Noise.svg b/res/Noise.svg
Binary files differ.
diff --git a/src/BogaudioModules.cpp b/src/BogaudioModules.cpp
@@ -17,4 +17,5 @@ void init(rack::Plugin *p) {
p->addModel(createModel<OffsetWidget>("Bogaudio", "Bogaudio-Offset", "Offset", ATTENUATOR_TAG, UTILITY_TAG));
p->addModel(createModel<SampleHoldWidget>("Bogaudio", "Bogaudio-SampleHold", "S&H", SAMPLE_AND_HOLD_TAG, DUAL_TAG, UTILITY_TAG));
p->addModel(createModel<ManualWidget>("Bogaudio", "Bogaudio-Manual", "Manual", UTILITY_TAG));
+ // p->addModel(createModel<NoiseWidget>("Bogaudio", "Bogaudio-Noise", "Noise", NOISE_TAG, UTILITY_TAG));
}
diff --git a/src/BogaudioModules.hpp b/src/BogaudioModules.hpp
@@ -32,6 +32,10 @@ struct ManualWidget : ModuleWidget {
ManualWidget();
};
+struct NoiseWidget : ModuleWidget {
+ NoiseWidget();
+};
+
struct Knob29 : RoundKnob {
Knob29() {
diff --git a/src/Noise.cpp b/src/Noise.cpp
@@ -0,0 +1,71 @@
+
+#include "BogaudioModules.hpp"
+#include "dsp/dsp.hpp"
+
+struct Noise : Module {
+ enum ParamsIds {
+ NUM_PARAMS
+ };
+
+ enum InputsIds {
+ NUM_INPUTS
+ };
+
+ enum OutputsIds {
+ WHITE_OUTPUT,
+ PINK_OUTPUT,
+ GAUSS_OUTPUT,
+ NUM_OUTPUTS
+ };
+
+ enum LightsIds {
+ NUM_LIGHTS
+ };
+
+ bogaudio::dsp::WhiteNoiseGenerator _white;
+ bogaudio::dsp::PinkNoiseGenerator _pink;
+ bogaudio::dsp::GaussianNoiseGenerator _gauss;
+
+ Noise() : Module(NUM_PARAMS, NUM_INPUTS, NUM_OUTPUTS, NUM_LIGHTS) {}
+
+ virtual void step() override;
+};
+
+void Noise::step() {
+ if (outputs[WHITE_OUTPUT].active) {
+ outputs[WHITE_OUTPUT].value = _white.next() * 10.0;
+ }
+ if (outputs[PINK_OUTPUT].active) {
+ outputs[PINK_OUTPUT].value = _pink.next() * 10.0;
+ }
+ if (outputs[GAUSS_OUTPUT].active) {
+ outputs[GAUSS_OUTPUT].value = _gauss.next();
+ }
+}
+
+
+NoiseWidget::NoiseWidget() {
+ Noise *module = new Noise();
+ setModule(module);
+ box.size = Vec(RACK_GRID_WIDTH * 3, RACK_GRID_HEIGHT);
+
+ {
+ SVGPanel *panel = new SVGPanel();
+ panel->box.size = box.size;
+ panel->setBackground(SVG::load(assetPlugin(plugin, "res/Noise.svg")));
+ addChild(panel);
+ }
+
+ addChild(createScrew<ScrewSilver>(Vec(0, 0)));
+ addChild(createScrew<ScrewSilver>(Vec(box.size.x - 15, 365)));
+
+ // generated by svg_widgets.rb
+ auto whiteOutputPosition = Vec(10.5, 34.0);
+ auto pinkOutputPosition = Vec(10.5, 75.0);
+ auto gaussOutputPosition = Vec(10.5, 144.0);
+ // end generated by svg_widgets.rb
+
+ addOutput(createOutput<PJ301MPort>(whiteOutputPosition, module, Noise::WHITE_OUTPUT));
+ addOutput(createOutput<PJ301MPort>(pinkOutputPosition, module, Noise::PINK_OUTPUT));
+ addOutput(createOutput<PJ301MPort>(gaussOutputPosition, module, Noise::GAUSS_OUTPUT));
+}
diff --git a/src/dsp/dsp.hpp b/src/dsp/dsp.hpp
@@ -0,0 +1,66 @@
+
+#include "rack.hpp"
+
+namespace bogaudio {
+namespace dsp {
+
+struct Generator {
+ Generator() {}
+ virtual ~Generator() {}
+
+ virtual float next() = 0;
+};
+
+struct NoiseGenerator : Generator {
+ NoiseGenerator() {}
+};
+
+struct WhiteNoiseGenerator : NoiseGenerator {
+ WhiteNoiseGenerator() {}
+
+ virtual float next() {
+ return rack::randomf();
+ }
+};
+
+struct PinkNoiseGenerator : NoiseGenerator {
+ static const int _n = 7;
+ uint64_t _g;
+ uint64_t _gs[_n];
+ uint32_t _count;
+ uint64_t _sum;
+
+ PinkNoiseGenerator() {
+ _sum = _g = rack::randomu64();
+ for (int i = 0; i < _n; ++i) {
+ _sum += _gs[i] = rack::randomu64();
+ }
+ _count = rack::randomu32();
+ }
+
+ virtual float next() {
+ // See: http://www.firstpr.com.au/dsp/pink-noise/
+ _sum -= _g;
+ _sum += _g = rack::randomu64();
+ for (int i = 0, bit = 1; i < _n; ++i, bit <<= 1) {
+ if (_count & bit) {
+ _sum -= _gs[i];
+ _sum += _gs[i] = rack::randomu64();
+ break;
+ }
+ }
+ ++_count;
+ return (_sum >> (64 - 24)) / powf(2, 24);
+ }
+};
+
+struct GaussianNoiseGenerator : NoiseGenerator {
+ GaussianNoiseGenerator() {}
+
+ virtual float next() {
+ return rack::randomNormal();
+ }
+};
+
+} // namespace dsp
+} // namespace bogaudio
