diff --git a/MicroDexed.ino b/MicroDexed.ino
index 0c539b8..d43768a 100644
--- a/MicroDexed.ino
+++ b/MicroDexed.ino
@@ -425,8 +425,8 @@ void setup()
     master_mixer_r.gain(instance_id, 1.0);
     master_mixer_l.gain(instance_id, 1.0);
   }
-  master_mixer_r.gain(3, pseudo_log_curve(configuration.fx.reverb_level / 100, true));
-  master_mixer_l.gain(3, pseudo_log_curve(configuration.fx.reverb_level / 100, true));
+  master_mixer_r.gain(3, pseudo_log_curve(configuration.fx.reverb_level / 100));
+  master_mixer_l.gain(3, pseudo_log_curve(configuration.fx.reverb_level / 100));
 
   set_sys_params();
 
@@ -714,7 +714,7 @@ void handleControlChange(byte inChannel, byte inCtrl, byte inValue)
 #ifdef USE_FX
           MicroDexed[instance_id]->fx.Gain = mapfloat(configuration.dexed[instance_id].sound_intensity, SOUND_INTENSITY_MIN, SOUND_INTENSITY_MAX, 0.0, SOUND_INTENSITY_AMP_MAX);
 #else
-          dexed_level[instance_id]->gain(pseudo_log_curve(mapfloat(configuration.dexed[instance_id].sound_intensity, SOUND_INTENSITY_MIN, SOUND_INTENSITY_MAX, 0.0, SOUND_INTENSITY_AMP_MAX), true));
+          dexed_level[instance_id]->gain(pseudo_log_curve(mapfloat(configuration.dexed[instance_id].sound_intensity, SOUND_INTENSITY_MIN, SOUND_INTENSITY_MAX, 0.0, SOUND_INTENSITY_AMP_MAX)));
 #endif
           if (LCDML.FUNC_getID() == LCDML.OTHER_getIDFromFunction(UI_func_sound_intensity))
           {
@@ -797,7 +797,7 @@ void handleControlChange(byte inChannel, byte inCtrl, byte inValue)
           }
         case 106:  // CC 106: delay feedback
           configuration.fx.delay_feedback[instance_id] = map(inValue, 0, 0x7f, DELAY_FEEDBACK_MIN , DELAY_FEEDBACK_MAX);
-          delay_fb_mixer[instance_id]->gain(1, mapfloat(configuration.fx.delay_feedback[instance_id], DELAY_FEEDBACK_MIN, DELAY_FEEDBACK_MAX, 0.0, 1.0)); // amount of feedback
+          delay_fb_mixer[instance_id]->gain(1, pseudo_log_curve(mapfloat(configuration.fx.delay_feedback[instance_id], DELAY_FEEDBACK_MIN, DELAY_FEEDBACK_MAX, 0.0, 1.0))); // amount of feedback
           if (LCDML.FUNC_getID() == LCDML.OTHER_getIDFromFunction(UI_func_delay_feedback))
           {
             LCDML.OTHER_updateFunc();
@@ -806,7 +806,7 @@ void handleControlChange(byte inChannel, byte inCtrl, byte inValue)
           break;
         case 107:  // CC 107: delay volume
           configuration.fx.delay_level[instance_id] = map(inValue, 0, 0x7f, DELAY_SEND_MIN, DELAY_SEND_MAX);
-          delay_mixer[instance_id]->gain(1, pseudo_log_curve(mapfloat(configuration.fx.delay_level[instance_id], DELAY_LEVEL_MIN, DELAY_LEVEL_MAX, 0.0, 1.0), true));
+          delay_mixer[instance_id]->gain(1, pseudo_log_curve(mapfloat(configuration.fx.delay_level[instance_id], DELAY_LEVEL_MIN, DELAY_LEVEL_MAX, 0.0, 1.0)));
           if (LCDML.FUNC_getID() == LCDML.OTHER_getIDFromFunction(UI_func_delay_level))
           {
             LCDML.OTHER_updateFunc();
@@ -1364,8 +1364,8 @@ void set_volume(uint8_t v, uint8_t m)
   Serial.println(v, DEC);
 #endif
 
-  volume_r.gain(v / 100.0);
-  volume_l.gain(v / 100.0);
+  volume_r.gain(pseudo_log_curve(v / 100.0));
+  volume_l.gain(pseudo_log_curve(v / 100.0));
 
   switch (m)
   {
@@ -1448,25 +1448,25 @@ void initial_values_from_eeprom(bool init)
       MicroDexed[instance_id]->setMonoMode(configuration.sys.mono);
 
 #if defined(USE_FX)
-      //chorus_mixer[instance_id]->gain(0, 1.0 - pseudo_log_curve(mapfloat(configuration.fx.chorus_level[instance_id], CHORUS_LEVEL_MIN, CHORUS_LEVEL_MAX, 0.0, 1.0), true));
-      //chorus_mixer[instance_id]->gain(1, pseudo_log_curve(mapfloat(configuration.fx.chorus_level[instance_id], CHORUS_LEVEL_MIN, CHORUS_LEVEL_MAX, 0.0, 1.0), true));
+      //chorus_mixer[instance_id]->gain(0, 1.0 - pseudo_log_curve(mapfloat(configuration.fx.chorus_level[instance_id], CHORUS_LEVEL_MIN, CHORUS_LEVEL_MAX, 0.0, 1.0)));
+      //chorus_mixer[instance_id]->gain(1, pseudo_log_curve(mapfloat(configuration.fx.chorus_level[instance_id], CHORUS_LEVEL_MIN, CHORUS_LEVEL_MAX, 0.0, 1.0)));
       //chorus_mixer[instance_id]->gain(0, 1.0 - mapfloat(configuration.fx.chorus_level[instance_id], CHORUS_LEVEL_MIN, CHORUS_LEVEL_MAX, 0.0, 0.5));
-      chorus_mixer[instance_id]->gain(1, pseudo_log_curve(mapfloat(configuration.fx.chorus_level[instance_id], CHORUS_LEVEL_MIN, CHORUS_LEVEL_MAX, 0.0, 0.5), true));
+      chorus_mixer[instance_id]->gain(1, pseudo_log_curve(mapfloat(configuration.fx.chorus_level[instance_id], CHORUS_LEVEL_MIN, CHORUS_LEVEL_MAX, 0.0, 0.5)));
       delay_mixer[instance_id]->gain(0, 1.0);
-      delay_mixer[instance_id]->gain(1, pseudo_log_curve(mapfloat(configuration.fx.delay_level[instance_id], DELAY_LEVEL_MIN, DELAY_LEVEL_MAX, 0.0, 1.0), true));
+      delay_mixer[instance_id]->gain(1, pseudo_log_curve(mapfloat(configuration.fx.delay_level[instance_id], DELAY_LEVEL_MIN, DELAY_LEVEL_MAX, 0.0, 1.0)));
       delay_fb_mixer[instance_id]->gain(0, 1.0);
-      delay_fb_mixer[instance_id]->gain(1, pseudo_log_curve(mapfloat(configuration.fx.delay_feedback[instance_id], DELAY_FEEDBACK_MIN, DELAY_FEEDBACK_MAX, 0.0, 1.0), true));
+      delay_fb_mixer[instance_id]->gain(1, pseudo_log_curve(mapfloat(configuration.fx.delay_feedback[instance_id], DELAY_FEEDBACK_MIN, DELAY_FEEDBACK_MAX, 0.0, 1.0)));
 
       // MicroDexed[instance_id]->fx.Gain = configuration.dexed[instance_id].sound_intensity / 100.0;
       MicroDexed[instance_id]->fx.Gain = 1.0;
       MicroDexed[instance_id]->fx.Reso = mapfloat(configuration.dexed[instance_id].filter_resonance, FILTER_RESONANCE_MIN, FILTER_RESONANCE_MAX, 1.0, 0.0);
       MicroDexed[instance_id]->fx.Cutoff = mapfloat(configuration.dexed[instance_id].filter_cutoff, FILTER_CUTOFF_MIN, FILTER_CUTOFF_MAX, 1.0, 0.0);
 
-      reverb_mixer_r.gain(instance_id, pseudo_log_curve(configuration.fx.reverb_send[instance_id] / 100.0, true));
-      reverb_mixer_l.gain(instance_id, pseudo_log_curve(configuration.fx.reverb_send[instance_id] / 100.0, true));
+      reverb_mixer_r.gain(instance_id, pseudo_log_curve(configuration.fx.reverb_send[instance_id] / 100.0));
+      reverb_mixer_l.gain(instance_id, pseudo_log_curve(configuration.fx.reverb_send[instance_id] / 100.0));
 #endif
 
-      dexed_level[instance_id]->gain(pseudo_log_curve(mapfloat(configuration.dexed[instance_id].sound_intensity, SOUND_INTENSITY_MIN, SOUND_INTENSITY_MAX, 0.0, SOUND_INTENSITY_AMP_MAX), true));
+      dexed_level[instance_id]->gain(pseudo_log_curve(mapfloat(configuration.dexed[instance_id].sound_intensity, SOUND_INTENSITY_MIN, SOUND_INTENSITY_MAX, 0.0, SOUND_INTENSITY_AMP_MAX)));
 
       set_voiceconfig_params(instance_id);
     }
@@ -1757,8 +1757,8 @@ void set_fx_params(void)
   for (uint8_t instance_id = 0; instance_id < NUM_DEXED; instance_id++)
   {
     // CHORUS
-    //chorus_mixer[instance_id]->gain(0, 1.0 - pseudo_log_curve(mapfloat(configuration.fx.chorus_level[instance_id], CHORUS_LEVEL_MIN, CHORUS_LEVEL_MAX, 0.0, 1.0), true));
-    //chorus_mixer[instance_id]->gain(1, pseudo_log_curve(mapfloat(configuration.fx.chorus_level[instance_id], CHORUS_LEVEL_MIN, CHORUS_LEVEL_MAX, 0.0, 1.0), true));
+    //chorus_mixer[instance_id]->gain(0, 1.0 - pseudo_log_curve(mapfloat(configuration.fx.chorus_level[instance_id], CHORUS_LEVEL_MIN, CHORUS_LEVEL_MAX, 0.0, 1.0)));
+    //chorus_mixer[instance_id]->gain(1, pseudo_log_curve(mapfloat(configuration.fx.chorus_level[instance_id], CHORUS_LEVEL_MIN, CHORUS_LEVEL_MAX, 0.0, 1.0)));
     //chorus_mixer[instance_id]->gain(0, 1.0 - mapfloat(configuration.fx.chorus_level[instance_id], CHORUS_LEVEL_MIN, CHORUS_LEVEL_MAX, 0.0, 0.5));
     chorus_mixer[instance_id]->gain(1, mapfloat(configuration.fx.chorus_level[instance_id], CHORUS_LEVEL_MIN, CHORUS_LEVEL_MAX, 0.0, 0.5));
     switch (configuration.fx.chorus_waveform[instance_id])
@@ -1789,14 +1789,14 @@ void set_fx_params(void)
 
     // DELAY
     delay_mixer[instance_id]->gain(0, 1.0);
-    delay_mixer[instance_id]->gain(1, pseudo_log_curve(mapfloat(configuration.fx.delay_level[instance_id], DELAY_LEVEL_MIN, DELAY_LEVEL_MAX, 0.0, 1.0), true));
+    delay_mixer[instance_id]->gain(1, pseudo_log_curve(mapfloat(configuration.fx.delay_level[instance_id], DELAY_LEVEL_MIN, DELAY_LEVEL_MAX, 0.0, 1.0)));
     delay_fx[instance_id]->delay(0, constrain(configuration.fx.delay_time[instance_id] * 10, DELAY_TIME_MIN * 10, DELAY_TIME_MAX * 10));
     delay_fb_mixer[instance_id]->gain(0, 1.0);
-    delay_fb_mixer[instance_id]->gain(1, pseudo_log_curve(mapfloat(configuration.fx.delay_feedback[instance_id], DELAY_FEEDBACK_MIN, DELAY_FEEDBACK_MAX, 0.0, 1.0), true));
+    delay_fb_mixer[instance_id]->gain(1, pseudo_log_curve(mapfloat(configuration.fx.delay_feedback[instance_id], DELAY_FEEDBACK_MIN, DELAY_FEEDBACK_MAX, 0.0, 1.0)));
 
     // REVERB
-    reverb_mixer_r.gain(instance_id, pseudo_log_curve(configuration.fx.reverb_send[instance_id] / 100.0, true));
-    reverb_mixer_l.gain(instance_id, pseudo_log_curve(configuration.fx.reverb_send[instance_id] / 100.0, true));
+    reverb_mixer_r.gain(instance_id, pseudo_log_curve(configuration.fx.reverb_send[instance_id] / 100.0));
+    reverb_mixer_l.gain(instance_id, pseudo_log_curve(configuration.fx.reverb_send[instance_id] / 100.0));
   }
 
   // REVERB
@@ -1804,8 +1804,8 @@ void set_fx_params(void)
   freeverb_r.damping(mapfloat(configuration.fx.reverb_damping, REVERB_DAMPING_MIN, REVERB_DAMPING_MAX, 0.0, 1.0));
   freeverb_l.roomsize(mapfloat(configuration.fx.reverb_roomsize, REVERB_ROOMSIZE_MIN, REVERB_ROOMSIZE_MAX, 0.0, 1.0));
   freeverb_l.damping(mapfloat(configuration.fx.reverb_damping, REVERB_DAMPING_MIN, REVERB_DAMPING_MAX, 0.0, 1.0));
-  master_mixer_r.gain(3, pseudo_log_curve(configuration.fx.reverb_level / 100.0, true));
-  master_mixer_l.gain(3, pseudo_log_curve(configuration.fx.reverb_level / 100.0, true));
+  master_mixer_r.gain(3, pseudo_log_curve(configuration.fx.reverb_level / 100.0));
+  master_mixer_l.gain(3, pseudo_log_curve(configuration.fx.reverb_level / 100.0));
 #endif
 }
 
@@ -1819,7 +1819,7 @@ void set_voiceconfig_params(uint8_t instance_id)
   MicroDexed[instance_id]->doRefreshVoice();
 
   // Dexed output level
-  dexed_level[instance_id]->gain(pseudo_log_curve(mapfloat(configuration.dexed[instance_id].sound_intensity, SOUND_INTENSITY_MIN, SOUND_INTENSITY_MAX, 0.0, SOUND_INTENSITY_AMP_MAX), true));
+  dexed_level[instance_id]->gain(pseudo_log_curve(mapfloat(configuration.dexed[instance_id].sound_intensity, SOUND_INTENSITY_MIN, SOUND_INTENSITY_MAX, 0.0, SOUND_INTENSITY_AMP_MAX)));
 
   // PANORAMA
   mono2stereo[instance_id]->panorama(mapfloat(configuration.dexed[instance_id].pan, PANORAMA_MIN, PANORAMA_MAX, -1.0, 1.0));
@@ -1843,14 +1843,18 @@ void _softRestart(void)
   SCB_AIRCR = 0x05FA0004;  //write value for restart
 }
 
-float pseudo_log_curve(float value, bool type)
+float pseudo_log_curve(float value)
 {
   const float _pseudo_log = 1048575 / (float)(1 << 20);
 
-  if (type == true)
-    return (_pseudo_log * arm_sin_f32(value));
-  else
-    return (_pseudo_log * arm_cos_f32(value));
+#ifdef DEBUG
+  Serial.print(F("value in: "));
+  Serial.print(value, 3);
+  Serial.print(F(" value out: "));
+  Serial.println(mapfloat(_pseudo_log * arm_sin_f32(value), 0.0, _pseudo_log * arm_sin_f32(1.0), 0.0, 1.0), 3);
+#endif
+
+  return (mapfloat(_pseudo_log * arm_sin_f32(value), 0.0, _pseudo_log * arm_sin_f32(1.0), 0.0, 1.0));
 }
 
 uint32_t crc32(byte * calc_start, uint16_t calc_bytes) // base code from https://www.arduino.cc/en/Tutorial/EEPROMCrc
diff --git a/UI.hpp b/UI.hpp
index 74d611b..4c38525 100644
--- a/UI.hpp
+++ b/UI.hpp
@@ -56,7 +56,7 @@ extern void eeprom_update_sys(void);
 extern void eeprom_update_performance(void);
 extern void eeprom_update_fx(void);
 extern void eeprom_update_dexed(uint8_t instance_id);
-extern float pseudo_log_curve(float value, bool type);
+extern float pseudo_log_curve(float value);
 extern uint8_t selected_instance_id;
 
 #ifdef DISPLAY_LCD_SPI
@@ -992,8 +992,8 @@ void UI_func_reverb_level(uint8_t param)
 
     lcd_display_bar_int("Reverb Level", configuration.fx.reverb_level, 1.0, REVERB_LEVEL_MIN, REVERB_LEVEL_MAX, 3, false, false, true);
 
-    master_mixer_r.gain(3, pseudo_log_curve(configuration.fx.reverb_level / 100.0, true));
-    master_mixer_l.gain(3, pseudo_log_curve(configuration.fx.reverb_level / 100.0, true));
+    master_mixer_r.gain(3, pseudo_log_curve(configuration.fx.reverb_level / 100.0));
+    master_mixer_l.gain(3, pseudo_log_curve(configuration.fx.reverb_level / 100.0));
   }
 
   if (LCDML.FUNC_close())     // ****** STABLE END *********
@@ -1211,8 +1211,8 @@ void UI_func_chorus_level(uint8_t param)
 
     lcd_display_bar_int("Chorus Lvl.", configuration.fx.chorus_level[selected_instance_id], 1.0, CHORUS_LEVEL_MIN, CHORUS_LEVEL_MAX, 3, false, false, false);
 
-    //chorus_mixer[selected_instance_id]->gain(0, 1.0 - pseudo_log_curve(mapfloat(configuration.fx.chorus_level[selected_instance_id], CHORUS_LEVEL_MIN, CHORUS_LEVEL_MAX, 0.0, 1.0), true));
-    //chorus_mixer[selected_instance_id]->gain(1, pseudo_log_curve(mapfloat(configuration.fx.chorus_level[selected_instance_id], CHORUS_LEVEL_MIN, CHORUS_LEVEL_MAX, 0.0, 1.0), true));
+    //chorus_mixer[selected_instance_id]->gain(0, 1.0 - pseudo_log_curve(mapfloat(configuration.fx.chorus_level[selected_instance_id], CHORUS_LEVEL_MIN, CHORUS_LEVEL_MAX, 0.0, 1.0)));
+    //chorus_mixer[selected_instance_id]->gain(1, pseudo_log_curve(mapfloat(configuration.fx.chorus_level[selected_instance_id], CHORUS_LEVEL_MIN, CHORUS_LEVEL_MAX, 0.0, 1.0)));
     //chorus_mixer[selected_instance_id]->gain(0, 1.0 - mapfloat(configuration.fx.chorus_level[selected_instance_id], CHORUS_LEVEL_MIN, CHORUS_LEVEL_MAX, 0.0, 0.5));
     chorus_mixer[selected_instance_id]->gain(1, mapfloat(configuration.fx.chorus_level[selected_instance_id], CHORUS_LEVEL_MIN, CHORUS_LEVEL_MAX, 0.0, 0.5));
   }
@@ -1373,7 +1373,7 @@ void UI_func_delay_level(uint8_t param)
 
     lcd_display_bar_int("Delay Lvl.", configuration.fx.delay_level[selected_instance_id], 1.0, DELAY_LEVEL_MIN, DELAY_LEVEL_MAX, 3, false, false, false);
 
-    delay_mixer[selected_instance_id]->gain(1, pseudo_log_curve(mapfloat(configuration.fx.delay_level[selected_instance_id], DELAY_LEVEL_MIN, DELAY_LEVEL_MAX, 0.0, 1.0), true));
+    delay_mixer[selected_instance_id]->gain(1, pseudo_log_curve(mapfloat(configuration.fx.delay_level[selected_instance_id], DELAY_LEVEL_MIN, DELAY_LEVEL_MAX, 0.0, 1.0)));
   }
 
   if (LCDML.FUNC_close())     // ****** STABLE END *********
@@ -1426,8 +1426,8 @@ void UI_func_reverb_send(uint8_t param)
 
     lcd_display_bar_int("Reverb Send", configuration.fx.reverb_send[selected_instance_id], 1.0, REVERB_SEND_MIN, REVERB_SEND_MAX, 3, false, false, false);
 
-    reverb_mixer_r.gain(selected_instance_id, pseudo_log_curve(configuration.fx.reverb_send[selected_instance_id] / 100.0, true));
-    reverb_mixer_l.gain(selected_instance_id, pseudo_log_curve(configuration.fx.reverb_send[selected_instance_id] / 100.0, true));
+    reverb_mixer_r.gain(selected_instance_id, pseudo_log_curve(configuration.fx.reverb_send[selected_instance_id] / 100.0));
+    reverb_mixer_l.gain(selected_instance_id, pseudo_log_curve(configuration.fx.reverb_send[selected_instance_id] / 100.0));
   }
 
   if (LCDML.FUNC_close())     // ****** STABLE END *********
@@ -1879,7 +1879,7 @@ void UI_func_sound_intensity(uint8_t param)
     }
 
     lcd_display_bar_int("Voice Level", configuration.dexed[selected_instance_id].sound_intensity, 1.0, SOUND_INTENSITY_MIN, SOUND_INTENSITY_MAX, 3, false, false, false);
-    dexed_level[selected_instance_id]->gain(pseudo_log_curve(mapfloat(configuration.dexed[selected_instance_id].sound_intensity, SOUND_INTENSITY_MIN, SOUND_INTENSITY_MAX, 0.0, SOUND_INTENSITY_AMP_MAX), true));
+    dexed_level[selected_instance_id]->gain(pseudo_log_curve(mapfloat(configuration.dexed[selected_instance_id].sound_intensity, SOUND_INTENSITY_MIN, SOUND_INTENSITY_MAX, 0.0, SOUND_INTENSITY_AMP_MAX)));
   }
 
   if (LCDML.FUNC_close())     // ****** STABLE END *********
diff --git a/config.h b/config.h
index 8e8f338..50c4280 100644
--- a/config.h
+++ b/config.h
@@ -47,7 +47,7 @@
 // amidi -p hw:2,0,0 -d -r /tmp/bkup1.syx
 //
 
-#define VERSION "0.9.9g"
+#define VERSION "0.9.9h"
 
 //*************************************************************************************************
 //* DEVICE SETTINGS
@@ -84,7 +84,7 @@
 //*************************************************************************************************
 //* DEBUG OUTPUT SETTINGS
 //*************************************************************************************************
-//#define DEBUG 1
+#define DEBUG 1
 #define SERIAL_SPEED 230400
 #define SHOW_XRUN 1
 #define SHOW_CPU_LOAD_MSEC 5000