Get your own fonts.

modulo sound

// Steve Lambert 2020-04-14
// Modulo sound
// v0.1

import processing.sound.*;

SinOsc sine;

int interval; // how often changes
int xPos; // circle location
int yPos;
int circleW = 50; // circle width
int stage = 0;

// sound variables
float sineFreq = 220; // sound frequency
float sineAmp = .75; // sound amplitude

// FONT SETUP
PFont LeagueGothicBig;
PFont LeagueGothicSmall;
int fSizeBig = 34; // size of big font
int fSizeSml = 24; // size of small font
int textHeight = height/2;
String line1 = "PRESS ENTER TO START";

void setup() {
  frameRate(8);
  size(600,600);
  smooth();
  noStroke();
  background(255);

  LeagueGothicBig = createFont("LeagueGothic-Regular", fSizeBig, true);
  LeagueGothicSmall = createFont("LeagueGothic-Regular", fSizeSml, true);
  
  sine = new SinOsc(this);
  sine.play();
  
} // end setup

void draw(){
  background(255);
  if (stage == 0){
    startScreen();
  } else if (stage == 1) {
    moduloSketch(); 
  }
}

void keyReleased() {
  if (key == RETURN || key == ENTER) {
    println("Hit Return stage 0");
      if (stage == 0){ // if on the start screen
        stage = 1;   // advance to the next stage
      } else { // otherwise do nothing

      } // end else
  } // end CODED
  else if (key == '0') { // if it's not coded, and it's 0
    stage = 0;         // reset
  }
    
}

void startScreen() {
  sine.amp(0); // turn off sound
  fill(255);
  background(255, 0, 0);
  textAlign(CENTER, CENTER); 
  textFont(LeagueGothicBig);
  //textLeading(80);  // Set leading to 10
  text(line1, width/2, height/2);
}

void moduloSketch() {
  
  sine.freq(sineFreq);

  ellipseMode(TOP);
    
  if (interval % 16 == 0)  {
    sine.freq(220);
    fill(51);
    ellipse(xPos,yPos+(circleW*1),circleW,circleW);
    sine.amp(sineAmp);
    
    } else if (interval % 4 == 0)  {
    sine.freq(440);
      fill(200,10,10);
    ellipse(xPos,yPos+(circleW*2),circleW,circleW);
    sine.amp(sineAmp);
    
    } else if (interval % 1.5 == 0)  {
    sine.freq(random(125,2000));
      fill(10,10,random(0,255));
    ellipse(xPos+200,yPos+(circleW*2),circleW,circleW);
    sine.amp(sineAmp);
    
    } else  {
      
       sine.amp(0);
    }
    
      interval = interval+ 1; // count each loop!
   println("interval: "+interval);
    
}