How do I play a random audio sample?

AlfieChillar

Hi there. So I'm still quite new to the coding game and I've been working on a visual code which is going really well. I'm now trying to add some sound. Using Minim audio samples I've made it so a sound plays when you click. However, I would like it to be so that when I click it plays a random 1 of, say, 5 audio samples. How do I go about doing this?

Many thanks in advance for any help

akenaton

@AlfieChillar: you can do that easily with minim (or other audio lib). Example (change the name of mp3 to yours!):::

import ddf.minim.*;
AudioPlayer player;//initialiser l'AudioPlayer
Minim minim;//initialiser minim

String[] tableau = {
  "my1.mp3", "my2.mp3"
};

void setup() {

  size(100, 100);
  minim = new Minim(this);
  int zardSon = int(random(tableau.length));
 String son = tableau[zardSon];
 player = minim.loadFile(son);
 player.pause();
 background(0);

}

void draw() {


if (player.isPlaying() == false) {
      int zardSon = int(random(tableau.length));
      String son = tableau[zardSon];
     player = minim.loadFile(son);
      player.play();

 }

}

  void stop(){

    player.close();//kill player
    minim.stop();//kill minim
    super.stop();//kill superClass audio Minim
  }

AlfieChillar

This is so almost perfect! Thank you so much! But how do I now change it so that it plays an audio file on mouseClick instead of back to back on start up?

akenaton

@AlfieChillar:: in order to do that (i am not sure to understand exactly what you want but i think you can easily adapt...) 1) add some boolean "boolean initPlayer = false" 2) in draw() before if (player.isPlaying() == false) add your conditionnal: if(mousePressed== true){ dont forget to close it with } at the end!!! 3) change the value of the boolean:: initPlayer = true;

Then add your mousePressed() method (after draw, of course)==

if (mousePressed == false && initPlayer == true){
  if (player.isPlaying() == true ) {
  player.pause();
  }
}
}

---So you can launch or stop the random sound...

AlfieChillar

I still can't quite get that bit working, but I am closer. Just to try and re-describe what I am aiming for: When you click the mouse it plays a single audio sample, but as oppose to setting just one sample, I would like it to randomly pick one from a few I have.

akenaton

@AlfieChillar== so, as long as you pressed the mouse the sound will be played...

    import ddf.minim.*;
    AudioPlayer player;
    Minim minim;
    boolean playeurInit = false;

    String[] tableau = {
      "my1.mp3", "my2.mp3"
    };

    void setup() {

      size(100, 100);
      minim = new Minim(this);
      int zardSon = int(random(tableau.length));
     String son = tableau[zardSon];
     player = minim.loadFile(son);
     player.pause();

      background(0);

    }


    void draw() {


    if (mousePressed == true) {

    if (player.isPlaying() == false) {
          int zardSon = int(random(tableau.length));
          String son = tableau[zardSon];
         player = minim.loadFile(son);
          player.play();
          player.loop();
          playeurInit = true;
     }


    if (mousePressed == false && playeurInit == true){
      if (player.isPlaying() == true ) {
      player.pause();
      }
    }
    }

      void stop(){

        player.close();//le player est tué
        minim.stop();//minim est tué

        super.stop();//on arrete la superClasse audio Minim
      }

akenaton

or if you prefer only clicking:

import ddf.minim.*;
AudioPlayer player;
Minim minim;

boolean playeurInit = false;// que leplayer n'est pas lancé
boolean stop = true;

String[] tableau = {
  "Om.mp3", "groove.mp3"
};


void setup() {



  size(100, 100);
  minim = new Minim(this);
  int zardSon = int(random(tableau.length));
 String son = tableau[zardSon];
 println(son);
 player = minim.loadFile(son);
 player.pause();

  background(0);

}





void draw() {

if (!stop) {

if (player.isPlaying() == false) {
      int zardSon = int(random(tableau.length));
      String son = tableau[zardSon];
     player = minim.loadFile(son);
      player.play();
      player.loop();//you can change that!
      playeurInit = true;
 }

}

//if (mousePressed == false && playeurInit == true){
//  if (player.isPlaying() == true ) {
//  player.pause();
//  }
//}
}

void mouseReleased(){
  if(stop == true){
    stop = false;
  }else{
    stop = true;
    if (player.isPlaying() == true ) {
 player.pause();
 }
  }
}


  void stop(){

    player.close();
    minim.stop();
    super.stop();
  }

AlfieChillar

These are awesome! Thank you so much :) Do you know how I could make it so it just plays one single file when I click? As opposed to starting a string of them?

akenaton

only one??? not random??? ---- each time in the code you see "son" (String son...) you change the random method to the name of your file; as for an example instead of String son = tableau[zardSon]; player = minim.loadFile(son); you put String son = "mymp3.mp3"; player = minim.loadFile("mymp3.mp3") or you put only one mp3 in the array and leave the code as it is!

AlfieChillar

But then it will play only one set file. I want it to play one file but for that file to be different/random each time you click.

akenaton

if you want that the random method NEVER returns a file that was already played you have to add another String[] playedFiles array (same length as the first one) and add to it the played files;( playedFiles.add[son]); then, also in the random method you add a conditionnal "if the file is present into the playedFiles, random again; it' s need a for(...){} loop with an int var which is = to the number of played file; for that you create a global int nbrePlayed files initialized to 0 at the beginning, and incremented each time a new file is played....Of course you must be aware that at some moment ALL the files have to be played, this will happen when your global nbrePlayedFiles == the length of your array of mp3...

clara_andrea

Hello ! Thanks a lot for this useful explanation. I'm not really good with english but I think your last explanation (akenaton) is exactly what I want to do with my file. But I don't really understand your explanation, do you have the exempe with the code? Thanks a lot !

kfrajer

A slightly different approach using StringList and its associated method shuffle() to generate a random list where all its items is played at least once before a new shuffled list is generated.

Kf

import ddf.minim.*;
AudioPlayer player;
Minim minim;

boolean playeurInit = false;// que leplayer n'est pas lancé
boolean stop = true;

StringList tableau;
int current=0;

void setup() {
  size(100, 100);
  minim = new Minim(this);

  //ADD sound files to your list
  tableau=new StringList();
  tableau.append("Om.mp3");
  tableau.append("groove.mp3");

  shufflePlayList();
  String son = tableau.get(current++);
  println(son);
  player = minim.loadFile(son);
  player.pause();

  background(0);
}

void draw() {

  if (!stop) {

    if (player.isPlaying() == false) {

      //CHECK we haven't exhausted the current shuffled(random) play list
      //If we have played all the songs, then re-shuffle the list
      if (current==tableau.size()-1) {
        shufflePlayList();
      }

      String son = tableau.get(current++);
      player = minim.loadFile(son);
      player.play();      
      playeurInit = true;
    }
  }
}

void mouseReleased() {
  if (stop == true) {
    stop = false;
  } else {
    stop = true;
    if (player.isPlaying() == true ) {
      player.pause();
    }
  }
}

void stop() {
  player.close();
  minim.stop();
  super.stop();
}

void shufflePlayList() {
  current=0;
  tableau.shuffle();
}