Add an RTA rack effect

- FFT-based real-time spectrum analyzer with 32/64/128 bands,
-30/-45/-60/-80 dB range modes, pink noise reference line,
and a QPainter-based renderer (RtaRenderer).

Author: juzzlin

CHANGELOG

@@ -25,6 +25,8 @@ New features:
 
 * Add a True Peak meter insert effect
 
+* Add an RTA rack effect
+
 Bug fixes:
 
 Other:

src/CMakeLists.txt

@@ -89,6 +89,7 @@ set(QML_SOURCE_FILES
     ${QML_BASE_DIR}/Dialogs/PitchBendAutomationModel.qml
     ${QML_BASE_DIR}/Dialogs/RecentFilesDialog.qml
     ${QML_BASE_DIR}/Dialogs/ReverbDialog.qml
+    ${QML_BASE_DIR}/Dialogs/RtaDialog.qml
     ${QML_BASE_DIR}/Dialogs/SamplerDialog.qml
     ${QML_BASE_DIR}/Dialogs/SamplerDialog_Global.qml
     ${QML_BASE_DIR}/Dialogs/SamplerDialog_Header.qml

src/application/application.cpp

@@ -45,6 +45,7 @@
 #include "../view/controllers/sampler_controller.hpp"
 #include "../view/controllers/synth_controller.hpp"
 #include "../view/controllers/wavetable_synth_controller.hpp"
+#include "../view/qml/Dialogs/rta_renderer.hpp"
 #include "../view/qml/Editor/line_number_renderer.hpp"
 #include "../view/qml/Editor/note_column_renderer.hpp"
 #include "models/audio_settings_model.hpp"
@@ -202,6 +203,7 @@ void Application::registerTypes()
     qmlRegisterType<MixerService>("Noteahead", majorVersion, minorVersion, "MixerService");
     qmlRegisterType<NoteColumnLineContainerHelper>("Noteahead", majorVersion, minorVersion, "NoteColumnLineContainerHelper");
     qmlRegisterType<NoteColumnRenderer>("Noteahead", majorVersion, minorVersion, "NoteColumnRenderer");
+    qmlRegisterType<RtaRenderer>("Noteahead", majorVersion, minorVersion, "RtaRenderer");
     qmlRegisterType<PitchBendAutomationsModel>("Noteahead", majorVersion, minorVersion, "PitchBendAutomationsModel");
     qmlRegisterType<PropertyService>("Noteahead", majorVersion, minorVersion, "PropertyService");
     qmlRegisterType<RecentFilesModel>("Noteahead", majorVersion, minorVersion, "RecentFilesModel");

src/common/constants.cpp

@@ -192,6 +192,11 @@ QString dbtpMeter()
 {
     return "dbtpmeter";
 }
+
+QString rta()
+{
+    return "rta";
+}
 } // namespace RackEffectType
 
 namespace NahdXml {
@@ -1677,6 +1682,36 @@ QString xmlKeyStringDetune()
     return "stringDetune";
 }
 
+QString xmlKeyBandCount()
+{
+    return "bandCount";
+}
+
+QString xmlKeyDbRange()
+{
+    return "dbRange";
+}
+
+QString xmlKeyShowPinkNoise()
+{
+    return "showPinkNoise";
+}
+
+QString xmlKeyPinkNoiseLevel()
+{
+    return "pinkNoiseLevel";
+}
+
+QString xmlKeySpeed()
+{
+    return "speed";
+}
+
+QString xmlKeyFftRate()
+{
+    return "fftRate";
+}
+
 } // namespace NahdXml
 
 } // namespace noteahead::Constants

src/common/constants.hpp

@@ -79,6 +79,7 @@ QString eq8BandParametricLegacy();
 QString allPassFilter();
 QString lufsMeter();
 QString dbtpMeter();
+QString rta();
 } // namespace RackEffectType
 
 namespace NahdXml {
@@ -432,6 +433,13 @@ QString xmlKeyStringDetune();
 QString xmlKeyLufsMeter();
 QString xmlKeyDbTpMeter();
 
+QString xmlKeyBandCount();
+QString xmlKeyDbRange();
+QString xmlKeyShowPinkNoise();
+QString xmlKeyPinkNoiseLevel();
+QString xmlKeySpeed();
+QString xmlKeyFftRate();
+
 QString embeddedDataPathPrefix();
 
 QString xmlValueFalse();

src/domain/CMakeLists.txt

@@ -35,6 +35,7 @@ set(HEADER_FILES
     dsp/oversampler.hpp
     dsp/poly_blep_oscillator.hpp
     dsp/reverb_effect.hpp
+    dsp/rta.hpp
     dsp/svf_filter.hpp
     dsp/true_stereo_panner.hpp
     dsp/waveguide_string.hpp
@@ -121,6 +122,7 @@ set(SOURCE_FILES
     dsp/oversampler.cpp
     dsp/poly_blep_oscillator.cpp
     dsp/reverb_effect.cpp
+    dsp/rta.cpp
     dsp/svf_filter.cpp
     dsp/true_stereo_panner.cpp
     dsp/wavetable.cpp