I just want to make the sound fade out when the  pixels get closer to white and have it fade back in as there is more color(movement)


THANKS.

1. import processing.opengl.*;
   
   import ddf.minim.*;
   import ddf.minim.signals.*;
   import ddf.minim.analysis.*;
   import ddf.minim.effects.*;
   
   import hypermedia.video.*;
   
   OpenCV opencv;
   PImage trailsImg;
   float threshold = 80f;
   Minim minim;
   AudioPlayer player;
   
   
   
   void setup() {
    
     // size(512, 200, P3D);
     minim = new Minim(this);
     // load a file, give the AudioPlayer buffers that are 2048 samples long
     player = minim.loadFile("01 Space Maker 1.mp3", 2048);
     // play the file
     player.loop();
   
   
   
       size( 800, 600 );
     
   
       // open video stream
       opencv = new OpenCV( this );
       opencv.capture( 800, 600 );
       trailsImg = new PImage (800, 600);
   }
   
   void draw() {
   
       opencv.read();                               // grab frame from camera
       //image( opencv.image(), 0, 0);                // show the original image
   PImage camImage;
   
       opencv.absDiff();  
      
      
      
      
       filter(INVERT);
   camImage = opencv.image();
    
       opencv.blur (OpenCV.BLUR, 3 );
      
      
       trailsImg.blend( opencv.image(), 0, 0, 800, 600, 0, 0, 800, 600, SCREEN);
      
       image( trailsImg, 0,0 );             // display the result
      
      //opencv.read(); //do i need this?
       int imgSize = opencv.height * opencv.width;
       for(int i = 0; i < imgSize; i++)
      
       color currColor = camImage;
       
         // Extract the red, green, and blue components from current pixel
         int currR = (currColor >> 16) & 0xFF; // Like red(), but faster
         int currG = (currColor >> 8) & 0xFF;
         int currB = currColor & 0xFF;
       
         colorSum += currR + currG + currB;
      
        if ( colorSum > 200)
       { player.shiftGain(0, -40, 5000);}
       else {player.shiftGain(-40, 0, 5000);}
      
      
       filter(INVERT);
      
       opencv.copy (trailsImg);
       opencv.blur (OpenCV.BLUR, 4 );
       opencv.contrast (0);
       opencv.brightness (-2);
       trailsImg = opencv.image();
      
        opencv.remember();  // store the actual image in memory
   }
   
   void keyPressed() {
      
      
   }
   void stop()
   {
     // always close Minim audio classes when you are done with them
     player.close();
     // always stop Minim before exiting
     minim.stop();
    
     super.stop();
   }