all of the changes

include/FluidSim/OutdoorExhaustReverb.hpp

@@ -19,6 +19,7 @@ public:
     explicit OutdoorExhaustReverb(int sample_rate = 44100);
     AudioFrame process_stereo(float input);
     float process(float input);
+    void set_decay_times(float low_seconds, float mid_seconds, float high_seconds);
 
 private:
     class DelayLine {
@@ -40,7 +41,7 @@ private:
     };
 
     int sample_rate_{};
-    float dt_{}, gain_low_{}, gain_mid_{}, gain_high_{};
+    float dt_{}, average_delay_seconds_{}, gain_low_{}, gain_mid_{}, gain_high_{};
     std::vector<DelayLine> fdn_;
     std::vector<OnePoleLowPass> low_filters_, mid_filters_;
     std::vector<float> read_buffer_, mix_buffer_;
@@ -49,6 +50,7 @@ private:
     float fast_envelope_{}, slow_envelope_{}, bloom_{};
     float fast_attack_{}, fast_release_{}, slow_attack_{}, slow_release_{}, bloom_decay_{};
 
+    void update_feedback_gains();
     static std::size_t delay_samples(int sample_rate, float milliseconds);
 };