Move tone stack params to OnParamChange()

Author: sdatkinson

NeuralAmpModeler/NeuralAmpModeler.cpp

@@ -326,30 +326,6 @@ void NeuralAmpModeler::ProcessBlock(iplug::sample** inputs, iplug::sample** outp
   sample** toneStackOutPointers = gateGainOutput;
   if (toneStackActive)
   {
-    // Translate params from knob 0-10 to dB.
-    // Tuned ranges based on my ear. E.g. seems treble doesn't need nearly as
-    // much swing as bass can use.
-    const double bassGainDB = 4.0 * (GetParam(kToneBass)->Value() - 5.0); // +/- 20
-    const double midGainDB = 3.0 * (GetParam(kToneMid)->Value() - 5.0); // +/- 15
-    const double trebleGainDB = 2.0 * (GetParam(kToneTreble)->Value() - 5.0); // +/- 10
-
-    const double bassFrequency = 150.0;
-    const double midFrequency = 425.0;
-    const double trebleFrequency = 1800.0;
-    const double bassQuality = 0.707;
-    // Wider EQ on mid bump up to sound less honky.
-    const double midQuality = midGainDB < 0.0 ? 1.5 : 0.7;
-    const double trebleQuality = 0.707;
-
-    // Define filter parameters
-    recursive_linear_filter::BiquadParams bassParams(sampleRate, bassFrequency, bassQuality, bassGainDB);
-    recursive_linear_filter::BiquadParams midParams(sampleRate, midFrequency, midQuality, midGainDB);
-    recursive_linear_filter::BiquadParams trebleParams(sampleRate, trebleFrequency, trebleQuality, trebleGainDB);
-    // Apply tone stack
-    // Set parameters
-    mToneBass.SetParams(bassParams);
-    mToneMid.SetParams(midParams);
-    mToneTreble.SetParams(trebleParams);
     sample** bassPointers = mToneBass.Process(gateGainOutput, numChannelsInternal, numFrames);
     sample** midPointers = mToneMid.Process(bassPointers, numChannelsInternal, numFrames);
     sample** treblePointers = mToneTreble.Process(midPointers, numChannelsInternal, numFrames);
@@ -462,6 +438,46 @@ void NeuralAmpModeler::OnUIOpen()
   mCheckSampleRateWarning = true;
 }
 
+void NeuralAmpModeler::OnParamChange(int paramIdx)
+{
+    switch (paramIdx)
+    {
+    case kToneBass:
+    {
+      const double sampleRate = GetSampleRate();
+      const double bassGainDB = 4.0 * (GetParam(kToneBass)->Value() - 5.0); // +/- 20
+      const double bassFrequency = 150.0;
+      const double bassQuality = 0.707;
+      recursive_linear_filter::BiquadParams bassParams(sampleRate, bassFrequency, bassQuality, bassGainDB);
+      mToneBass.SetParams(bassParams);
+    }
+      
+      break;
+    case kToneMid:
+      {
+      const double sampleRate = GetSampleRate();
+      const double midGainDB = 3.0 * (GetParam(kToneMid)->Value() - 5.0); // +/- 15
+      const double midFrequency = 425.0;
+      // Wider EQ on mid bump up to sound less honky.
+      const double midQuality = midGainDB < 0.0 ? 1.5 : 0.7;
+      recursive_linear_filter::BiquadParams midParams(sampleRate, midFrequency, midQuality, midGainDB);
+      mToneMid.SetParams(midParams);
+      }
+      break;
+    case kToneTreble:
+      {
+      const double sampleRate = GetSampleRate();
+      const double trebleGainDB = 2.0 * (GetParam(kToneTreble)->Value() - 5.0); // +/- 10
+      const double trebleFrequency = 1800.0;
+      const double trebleQuality = 0.707;
+      recursive_linear_filter::BiquadParams trebleParams(sampleRate, trebleFrequency, trebleQuality, trebleGainDB);
+      mToneTreble.SetParams(trebleParams);
+      }
+      break;
+    default: break;
+    }
+}
+
 void NeuralAmpModeler::OnParamChangeUI(int paramIdx, EParamSource source)
 {
   if (auto pGraphics = GetUI())

NeuralAmpModeler/NeuralAmpModeler.h

@@ -216,6 +216,7 @@ class NeuralAmpModeler final : public iplug::Plugin
   void OnUIOpen() override;
   bool OnHostRequestingSupportedViewConfiguration(int width, int height) override { return true; }
 
+  void OnParamChange(int paramIdx) override;
   void OnParamChangeUI(int paramIdx, iplug::EParamSource source) override;
   bool OnMessage(int msgTag, int ctrlTag, int dataSize, const void* pData) override;