commit c5d058b119facaf5d7d673d1fd0e186d1deb1c98
parent db902de0e6f6992dbb03674217a4a5039b172ace
Author: Matt Demanett <matt@demanett.net>
Date: Wed, 19 Sep 2018 21:56:53 -0400
NSGT: compact noise gate.
Diffstat:
5 files changed, 323 insertions(+), 0 deletions(-)
diff --git a/res-src/Nsgt-src.svg b/res-src/Nsgt-src.svg
@@ -0,0 +1,143 @@
+<svg
+ version="1.1"
+ xmlns="http://www.w3.org/2000/svg"
+ xmlns:xlink="http://www.w3.org/1999/xlink"
+ width="90"
+ height="380"
+ viewBox="0 0 90 380"
+>
+ <style>
+ text {
+ fill: #333;
+ font-family: 'Roboto', sans-serif;
+ font-weight: bold;
+ }
+ text.title {
+ font-family: 'Comfortaa', sans-serif;
+ font-weight: normal;
+ }
+ text.brand {
+ font-family: 'Audiowide', sans-serif;
+ font-weight: bold;
+ }
+ </style>
+
+ <defs>
+ <symbol id="knob38" viewBox="0 0 38px 38px">
+ <g transform="translate(19 19)">
+ <polyline points="-5,0 5,0" stroke-width="1" stroke="#00f" />
+ <polyline points="0,-5 0,5" stroke-width="1" stroke="#00f" />
+ <circle cx="0" cy="0" r="18.5" stroke-width="1" stroke="#00f" fill="none" />
+ </g>
+ </symbol>
+
+ <symbol id="knobguide-threshold38" viewBox="0 0 70px 70px">
+ <g transform="translate(35 35)">
+ <text font-size="6.0pt" transform="rotate(-240) translate(25 0) rotate(240) translate(-10 2.5)">-24</text>
+ <polyline points="0,0 3,0" stroke-width="0.3" stroke="#333" transform="rotate(-210) translate(21 0)" />
+ <text font-size="6.0pt" transform="rotate(-180) translate(25 0) rotate(180) translate(-10 2.5)">-18</text>
+ <polyline points="0,0 3,0" stroke-width="0.3" stroke="#333" transform="rotate(-150) translate(21 0)" />
+ <text font-size="6.0pt" transform="rotate(-120) translate(25 0) rotate(120) translate(-10 2.5)">-12</text>
+ <polyline points="0,0 3,0" stroke-width="0.3" stroke="#333" transform="rotate(-90) translate(21 0)" />
+ <text font-size="6.0pt" transform="rotate(-60) translate(25 0) rotate(60) translate(-2.3 2.5)">-6</text>
+ <polyline points="0,0 3,0" stroke-width="0.3" stroke="#333" transform="rotate(-30) translate(21 0)" />
+ <text font-size="6.0pt" transform="rotate(0) translate(25 0) rotate(0) translate(-2.3 2.5)">0</text>
+ <polyline points="0,0 3,0" stroke-width="0.3" stroke="#333" transform="rotate(30) translate(21 0)" />
+ <text font-size="6.0pt" transform="rotate(60) translate(25 0) rotate(-60) translate(-2.3 2.5)">6</text>
+ <text font-size="6.0pt" transform="rotate(90) translate(29 0) rotate(-90) translate(-4.7 2.2)">dB</text>
+ </g>
+ </symbol>
+
+ <symbol id="knobguide-ratio38" viewBox="0 0 70px 70px">
+ <g transform="translate(35 35)">
+ <text font-size="6.0pt" transform="rotate(-240) translate(25 0) rotate(240) translate(-2.5 2.5)">1</text>
+ <text font-size="6.0pt" transform="rotate(-193.72) translate(25 0) rotate(193.72) translate(-8 2.5)">1.1</text>
+ <text font-size="6.0pt" transform="rotate(-149.70) translate(25 0) rotate(149.70) translate(-9 2.5)">1.3</text>
+ <text font-size="6.0pt" transform="rotate(-108.93) translate(25 0) rotate(108.93) translate(-9 2.5)">1.6</text>
+ <text font-size="6.0pt" transform="rotate(-74.52) translate(25 0) rotate(74.52) translate(-2.3 2.5)">2</text>
+ <text font-size="6.0pt" transform="rotate(-47.12) translate(25 0) rotate(47.12) translate(-2.3 2.5)">2.5</text>
+ <text font-size="6.0pt" transform="rotate(-6.18) translate(25 0) rotate(6.18) translate(-2.3 2.5)">4</text>
+ <text font-size="6.0pt" transform="rotate(31.11) translate(25 0) rotate(-31.11) translate(-2.3 2.5)">9</text>
+ <text font-size="6.0pt" transform="rotate(60) translate(25 0) rotate(-60) translate(-4 2.2)">∞</text>
+ </g>
+ </symbol>
+
+ <symbol id="switch" viewBox="0 0 14px 24px">
+ <rect width="14px" height="24px" stroke-width="1" stroke="#000" fill="#ddd" />
+ <rect width="14px" height="12px" stroke-width="0" fill="#000" />
+ </symbol>
+
+ <symbol id="input" viewBox="0 0 24px 24px">
+ <g transform="translate(12 12)">
+ <circle cx="0" cy="0" r="5" stroke-width="1" stroke="#0f0" fill="#0f0" />
+ <circle cx="0" cy="0" r="10.5" stroke-width="3" stroke="#0f0" fill="none" />
+ </g>
+ </symbol>
+
+ <symbol id="output" viewBox="0 0 24px 24px">
+ <g transform="translate(12 12)">
+ <circle cx="0" cy="0" r="5" stroke-width="1" stroke="#f00" fill="#f00" />
+ <circle cx="0" cy="0" r="10.5" stroke-width="3" stroke="#f00" fill="none" />
+ </g>
+ </symbol>
+ </defs>
+
+ <rect width="100%" height="100%" fill="#ddd" />
+ <polyline points="1,1 89,1 89,379 1,379 1,1" stroke="#e4e4e4" stroke-width="0.5" fill="none" />
+ <polyline points="0.5,0.5 89.5,0.5 89.5,379.5 0.5,379.5 0.5,0.5" stroke="#ebebeb" stroke-width="0.8" fill="none" />
+ <polyline points="0,0 90,0 90,380 0,380 0,0" stroke="#f2f2f2" stroke-width="1" fill="none" />
+
+ <text class="title" x="38" y="17" font-size="9pt" letter-spacing="3px">NSGT</text>
+ <g transform="translate(5.5 374)">
+ <text class="brand" font-size="6.5pt" letter-spacing="2px">BOGAUDIO</text>
+ <rect width="1.5" height="2" fill="#ddd" transform="translate(21 -4)" />
+ </g>
+
+ <!-- <polyline points="0,0 0,380" stroke="#0f0" stroke-width="1" fill="none" transform="translate(45 0)" /> -->
+ <!-- <rect width="90" height="15" fill="#0f0" transform="translate(0 18)" /> -->
+ <!-- <rect width="90" height="15" fill="#0f0" transform="translate(0 102)" /> -->
+ <!-- <rect width="90" height="7" fill="#0f0" transform="translate(0 185)" /> -->
+ <!-- <rect width="90" height="7" fill="#0f0" transform="translate(0 232)" /> -->
+
+ <g transform="translate(0 40)">
+ <text font-size="8pt" letter-spacing="2px" transform="translate(8 0)">THRESHOLD</text>
+ <use id="THRESHOLD_PARAM" xlink:href="#knob38" transform="translate(26 12)" />
+ <use xlink:href="#knobguide-threshold38" transform="translate(10 -4)" />
+ </g>
+
+ <g transform="translate(0 122)">
+ <text font-size="8pt" letter-spacing="2px" transform="translate(25.5 0)">RATIO</text>
+ <use id="RATIO_PARAM" xlink:href="#knob38" transform="translate(26 13)" />
+ <use xlink:href="#knobguide-ratio38" transform="translate(10 -3)" />
+ </g>
+
+ <g transform="translate(40 198)">
+ <text font-size="5pt" letter-spacing="2px" transform="translate(-8 25.5) rotate(270)">KNEE</text>
+ <text font-size="5pt" letter-spacing="2px" transform="translate(-4 -1)">SOFT</text>
+ <use id="KNEE_PARAM" xlink:href="#switch" transform="translate(0 2)" />
+ <text font-size="5pt" letter-spacing="2px" transform="translate(-5 34)">HARD</text>
+ </g>
+
+ <g transform="translate(11 240)">
+ <g transform="translate(0 0)">
+ <rect width="68" height="10" fill="#fafafa" transform="translate(0 66)" />
+ <rect width="68" height="73" rx="5" fill="#fafafa" />
+ <use id="LEFT_INPUT" xlink:href="#input" transform="translate(5 4)" />
+ <text font-size="5pt" letter-spacing="2px" transform="translate(15.5 36)">L</text>
+ <use id="RIGHT_INPUT" xlink:href="#input" transform="translate(39 4)" />
+ <text font-size="5pt" letter-spacing="2px" transform="translate(49 36)">R</text>
+ <use id="THRESHOLD_INPUT" xlink:href="#input" transform="translate(5 40)" />
+ <text font-size="5pt" letter-spacing="2px" transform="translate(5.5 72)">TRSH</text>
+ <use id="RATIO_INPUT" xlink:href="#input" transform="translate(39 40)" />
+ <text font-size="5pt" letter-spacing="1px" transform="translate(39.5 72)">RATIO</text>
+ </g>
+ <g transform="translate(0 79)">
+ <rect width="68" height="10" fill="#bbb" transform="translate(0 -3)" />
+ <rect width="68" height="37" rx="5" fill="#bbb" />
+ <use id="LEFT_OUTPUT" xlink:href="#output" transform="translate(5 1)" />
+ <text font-size="5pt" letter-spacing="2px" transform="translate(15.5 33)">L</text>
+ <use id="RIGHT_OUTPUT" xlink:href="#output" transform="translate(39 1)" />
+ <text font-size="5pt" letter-spacing="2px" transform="translate(49 33)">R</text>
+ </g>
+ </g>
+</svg>
diff --git a/res/Nsgt.svg b/res/Nsgt.svg
Binary files differ.
diff --git a/src/Nsgt.cpp b/src/Nsgt.cpp
@@ -0,0 +1,115 @@
+
+#include "Nsgt.hpp"
+
+void Nsgt::onReset() {
+ _modulationStep = modulationSteps;
+}
+
+void Nsgt::onSampleRateChange() {
+ float sampleRate = engineGetSampleRate();
+ _detector.setSampleRate(sampleRate);
+ _attackSL.setParams(sampleRate, 150.0f);
+ _releaseSL.setParams(sampleRate, 600.0f);
+ _modulationStep = modulationSteps;
+}
+
+void Nsgt::step() {
+ if (!(outputs[LEFT_OUTPUT].active || outputs[RIGHT_OUTPUT].active)) {
+ return;
+ }
+
+ ++_modulationStep;
+ if (_modulationStep >= modulationSteps) {
+ _modulationStep = 0;
+
+ _thresholdDb = params[THRESHOLD_PARAM].value;
+ if (inputs[THRESHOLD_INPUT].active) {
+ _thresholdDb *= clamp(inputs[THRESHOLD_INPUT].value / 10.0f, 0.0f, 1.0f);
+ }
+ _thresholdDb *= 30.0f;
+ _thresholdDb -= 24.0f;
+
+ float ratio = params[RATIO_PARAM].value;
+ if (inputs[RATIO_INPUT].active) {
+ ratio *= clamp(inputs[RATIO_INPUT].value / 10.0f, 0.0f, 1.0f);
+ }
+ if (_ratioKnob != ratio) {
+ _ratioKnob = ratio;
+ _ratio = powf(_ratioKnob, 1.5f);
+ _ratio = 1.0f - _ratio;
+ _ratio *= M_PI;
+ _ratio *= 0.25f;
+ _ratio = tanf(_ratio);
+ _ratio = 1.0f / _ratio;
+ }
+
+ _softKnee = params[KNEE_PARAM].value > 0.97f;
+ }
+
+ float leftInput = inputs[LEFT_INPUT].value;
+ float rightInput = inputs[RIGHT_INPUT].value;
+ float env = _detector.next(leftInput + rightInput);
+ if (env > _lastEnv) {
+ env = _attackSL.next(env, _lastEnv);
+ }
+ else {
+ env = _releaseSL.next(env, _lastEnv);
+ }
+ _lastEnv = env;
+
+ float detectorDb = amplitudeToDecibels(env / 5.0f);
+ float compressionDb = _noiseGate.compressionDb(detectorDb, _thresholdDb, _ratio, _softKnee);
+ _amplifier.setLevel(-compressionDb);
+ if (outputs[LEFT_OUTPUT].active) {
+ outputs[LEFT_OUTPUT].value = _saturator.next(_amplifier.next(leftInput));
+ }
+ if (outputs[RIGHT_OUTPUT].active) {
+ outputs[RIGHT_OUTPUT].value = _saturator.next(_amplifier.next(rightInput));
+ }
+}
+
+struct NsgtWidget : ModuleWidget {
+ static constexpr int hp = 6;
+
+ NsgtWidget(Nsgt* module) : ModuleWidget(module) {
+ box.size = Vec(RACK_GRID_WIDTH * hp, RACK_GRID_HEIGHT);
+
+ {
+ SVGPanel *panel = new SVGPanel();
+ panel->box.size = box.size;
+ panel->setBackground(SVG::load(assetPlugin(plugin, "res/Nsgt.svg")));
+ addChild(panel);
+ }
+
+ addChild(Widget::create<ScrewSilver>(Vec(0, 0)));
+ addChild(Widget::create<ScrewSilver>(Vec(box.size.x - 15, 365)));
+
+ // generated by svg_widgets.rb
+ auto thresholdParamPosition = Vec(26.0, 52.0);
+ auto ratioParamPosition = Vec(26.0, 135.0);
+ auto kneeParamPosition = Vec(39.5, 199.5);
+
+ auto leftInputPosition = Vec(16.0, 244.0);
+ auto rightInputPosition = Vec(50.0, 244.0);
+ auto thresholdInputPosition = Vec(16.0, 280.0);
+ auto ratioInputPosition = Vec(50.0, 280.0);
+
+ auto leftOutputPosition = Vec(16.0, 320.0);
+ auto rightOutputPosition = Vec(50.0, 320.0);
+ // end generated by svg_widgets.rb
+
+ addParam(ParamWidget::create<Knob38>(thresholdParamPosition, module, Nsgt::THRESHOLD_PARAM, 0.0, 1.0, 0.8));
+ addParam(ParamWidget::create<Knob38>(ratioParamPosition, module, Nsgt::RATIO_PARAM, 0.0, 1.0, 0.552));
+ addParam(ParamWidget::create<SliderSwitch2State14>(kneeParamPosition, module, Nsgt::KNEE_PARAM, 0.95, 1.0, 1.0));
+
+ addInput(Port::create<Port24>(leftInputPosition, Port::INPUT, module, Nsgt::LEFT_INPUT));
+ addInput(Port::create<Port24>(rightInputPosition, Port::INPUT, module, Nsgt::RIGHT_INPUT));
+ addInput(Port::create<Port24>(thresholdInputPosition, Port::INPUT, module, Nsgt::THRESHOLD_INPUT));
+ addInput(Port::create<Port24>(ratioInputPosition, Port::INPUT, module, Nsgt::RATIO_INPUT));
+
+ addOutput(Port::create<Port24>(leftOutputPosition, Port::OUTPUT, module, Nsgt::LEFT_OUTPUT));
+ addOutput(Port::create<Port24>(rightOutputPosition, Port::OUTPUT, module, Nsgt::RIGHT_OUTPUT));
+ }
+};
+
+Model* modelNsgt = createModel<Nsgt, NsgtWidget>("Bogaudio-Nsgt", "Nsgt", "noise gate", DYNAMICS_TAG);
diff --git a/src/Nsgt.hpp b/src/Nsgt.hpp
@@ -0,0 +1,63 @@
+#pragma once
+
+#include "bogaudio.hpp"
+#include "dsp/signal.hpp"
+
+using namespace bogaudio::dsp;
+
+extern Model* modelNsgt;
+
+namespace bogaudio {
+
+struct Nsgt : Module {
+ enum ParamsIds {
+ THRESHOLD_PARAM,
+ RATIO_PARAM,
+ KNEE_PARAM,
+ NUM_PARAMS
+ };
+
+ enum InputsIds {
+ LEFT_INPUT,
+ RIGHT_INPUT,
+ THRESHOLD_INPUT,
+ RATIO_INPUT,
+ NUM_INPUTS
+ };
+
+ enum OutputsIds {
+ LEFT_OUTPUT,
+ RIGHT_OUTPUT,
+ NUM_OUTPUTS
+ };
+
+ enum LightsIds {
+ NUM_LIGHTS
+ };
+
+ const int modulationSteps = 100;
+ int _modulationStep = 0;
+ float _thresholdDb = 0.0f;
+ float _ratio = 0.0f;
+ float _ratioKnob = -1.0f;
+ bool _softKnee = true;
+ float _lastEnv = 0.0f;
+
+ SlewLimiter _attackSL;
+ SlewLimiter _releaseSL;
+ RootMeanSquare _detector;
+ NoiseGate _noiseGate;
+ Amplifier _amplifier;
+ Saturator _saturator;
+
+ Nsgt() : Module(NUM_PARAMS, NUM_INPUTS, NUM_OUTPUTS, NUM_LIGHTS) {
+ onReset();
+ onSampleRateChange();
+ }
+
+ void onReset() override;
+ void onSampleRateChange() override;
+ void step() override;
+};
+
+} // namespace bogaudio
diff --git a/src/bogaudio.cpp b/src/bogaudio.cpp
@@ -27,6 +27,7 @@
#include "Mult.hpp"
#include "Mute8.hpp"
#include "Noise.hpp"
+#include "Nsgt.hpp"
#include "Offset.hpp"
#include "Pan.hpp"
#include "Pressor.hpp"
@@ -97,6 +98,7 @@ void init(rack::Plugin *p) {
p->addModel(modelAMRM);
p->addModel(modelPressor);
p->addModel(modelLmtr);
+ p->addModel(modelNsgt);
#endif
p->addModel(modelAnalyzer);
