Fixing log volume curve.

MicroDexed.ino

@@ -1817,7 +1817,7 @@ float pseudo_log_curve(float value)
   // ideas from here: https://forum.pjrc.com/threads/56015-Changing-Volume-Levels-based-on-pot-wheel
 
 
-  const float _pseudo_log = 1048575 / (float)(1 << 20);
+  //const float _pseudo_log = 1048575 / (float)(1 << 20);
   /*
     #ifdef DEBUG
     Serial.print(F("value in: "));
@@ -1827,16 +1827,10 @@ float pseudo_log_curve(float value)
     #endif
   */
 
-  return (mapfloat(_pseudo_log * arm_sin_f32(value), 0.0, _pseudo_log * arm_sin_f32(1.0), 0.0, 1.0));
+  //return (mapfloat(_pseudo_log * arm_sin_f32(value), 0.0, _pseudo_log * arm_sin_f32(1.0), 0.0, 1.0));
-
+  //return (1 - sqrt(1 - value * value));
-  /*
+  //return (pow(value, 2));
-    float g = mapfloat(_pseudo_log * arm_sin_f32(value), 0.0, _pseudo_log * arm_sin_f32(1.0), 0.0, 1.0);
+  return (pow(2, value) - 1);
-
-    if (g == 0.0)
-      return (0.001);
-    else
-      return (g);
-  */
 }
 
 uint32_t crc32(byte * calc_start, uint16_t calc_bytes) // base code from https://www.arduino.cc/en/Tutorial/EEPROMCrc