hello there, this is my first message on this board, so please forgive any errors i make etc. I am creating a project that capture sound and uses this to alter the image of a live input (web cam)using the video library and sonia

Here is the code-
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import pitaru.sonia_v2_9.*;
import processing.video.*;

Capture cam;

void setup(){
 size(640,480);
 background(0);
   cam = new Capture(this, 640, 480);
   loadPixels();
 
 frameRate(10);
 Sonia.start(this);
 LiveInput.start(32);
 
}

void draw(){
 background(0);
 LiveInput.getSpectrum();
 
   for(int a=1;a<32;a+=1){
     circleStrip(a*20, LiveInput.spectrum[a]);
     
   }
}

void circleStrip(int stripLoc, float spectrumData){
   
   for (int i = -20; i < height ; i+=20){
     int j = stripLoc;
   
     noStroke();

     int intspectrumdata = int(spectrumData);
 
     noStroke();
     
     cam.read();
     color d = cam.get(j, i);
       
      fill(d, 50);
      rectMode(CENTER);
     rect (j, i , 30 + intspectrumdata, 30 + intspectrumdata);
   
   }
}
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My major problem is that it i am only receiving an image every 7 seconds, and i would preferably have two every second, in order to speed it up i can use less channels (16 instead of 32), or use a faster computer, but i was wandering if anybody knew of a way to speed it up in other ways such as code structure, retaining the image quality,  any help would be greatly appreciated ,

many thanks