try to make code performant, lets see if this will work.

src/engine/EqProcessor.h

@@ -1,11 +1,13 @@
 #pragma once
+
 #include "AudioBuffer.h"
+#include <array>
 
 namespace engine {
 
 class EqProcessor {
 public:
-    static constexpr int   BANDS = 10;
+    static constexpr int BANDS = 10;
     static constexpr float FREQS[BANDS] = {
         32, 64, 125, 250, 500, 1000, 2000, 4000, 8000, 16000
     };
@@ -14,12 +16,9 @@ public:
 
     void  setBand(int band, float dB);
     float band(int band) const;
-
-    void process(AudioBuffer &buf);
-
-    void reset();
-
-    void setSampleRate(int sr);
+    void  process(AudioBuffer &buf);
+    void  reset();
+    void  setSampleRate(int sr);
 
 private:
     void recomputeBiquad(int band);
@@ -28,22 +27,21 @@ private:
     float m_gainDb[BANDS] {};
 
     struct BiquadCoefficients {
-        float b0 {};
-        float b1 {};
-        float b2 {};
-        float a1 {};
-        float a2 {};
+        float b0 { 1.0f };
+        float b1 { 0.0f };
+        float b2 { 0.0f };
+        float a1 { 0.0f };
+        float a2 { 0.0f };
     };
-
     BiquadCoefficients m_coeff[BANDS];
 
     struct BiquadState {
-        float z1;
-        float z2;
+        float z1 { 0.0f };
+        float z2 { 0.0f };
     };
-
+    
     static constexpr int MAX_CH = 8;
-    BiquadState m_state[BANDS][MAX_CH] {};
+    BiquadState m_state[BANDS][MAX_CH] {}; 
 };
 
 } // namespace engine