AudioPlayer instead of AudioOUtput with Minim-Library and multiple mixer?

Picaroon

Hi All,

I'm trying to use multiple mixer with the Minim library. Basically, I'm using several USB-Sound Cards in order to get multiple Audio Outputs - I have several mp3's played at the same time, and each mp3 is supposed to go to another speaker.

That's what I have so far (based on the setOutputMixer-Example) and that works fine:

import ddf.minim.*;
import ddf.minim.signals.*;
import controlP5.*;
import javax.sound.sampled.*;
AudioPlayer player;
Minim minim;
Minim minim2;
AudioOutput out;
AudioOutput out2;

Mixer.Info[] mixerInfo;
SineWave sine;
SineWave sine2;

void setup()
{
  size(512, 275);

  minim = new Minim(this);
  minim2 = new Minim(this);

  mixerInfo = AudioSystem.getMixerInfo();

  for(int i = 0; i < mixerInfo.length; i++)
  {println(i + " = " + mixerInfo[i].getName());} 

  sine = new SineWave(220, 0.3, 44100);
  sine2 = new SineWave(20, 1.5, 40100);
 }

void draw()
{
  Mixer mixer = AudioSystem.getMixer(mixerInfo[2]);
  minim.setOutputMixer(mixer);
  out = minim.getLineOut(Minim.STEREO);  
  out.addSignal(sine);

  Mixer mixer2 = AudioSystem.getMixer(mixerInfo[1]);
  minim2.setOutputMixer(mixer2);
  out2 = minim2.getLineOut(Minim.STEREO);  
  out2.addSignal(sine2);
 }

Now the question: Instead of the sine, I want to play mp3's, but I can't manage to add the mp3's to the different mixers (Sorry, I'm kind of a beginner...)

Anyone knows how to do that?

Thanks! Rebecca

LittleWeiz

Hi there,

Nice project you are working on. I am trying to do something similar on Minim as well.

Have you tried this example yet?

import ddf.minim.*;
import ddf.minim.analysis.*;

Minim minim;
AudioPlayer song;
FFT fft;

void setup()
{
  size(512, 200);

  // always start Minim first!
  minim = new Minim(this);

  // specify 512 for the length of the sample buffers
  // the default buffer size is 1024
  song = minim.loadFile("songfile.mp3", 512);
  song.play();

  // an FFT needs to know how 
  // long the audio buffers it will be analyzing are
  // and also needs to know 
  // the sample rate of the audio it is analyzing
  fft = new FFT(song.bufferSize(), song.sampleRate());
}

void draw()
{}

Of course you must have a .WAV or .MP3 file in the data directory of your sketch!

Best regards, Weiliang

Picaroon

Hi Weiliang!

Thank you!

This is how I solved the problem in the end:

import processing.serial.*;
import cc.arduino.*;
import ddf.minim.*;
Arduino arduino;

PFont f;

import ddf.minim.signals.*;
import javax.sound.sampled.*;
import ddf.minim.ugens.*;


////////////////////Audio////////
MultiChannelBuffer sampleBuffer;
MultiChannelBuffer sampleBuffer2;

AudioOutput        output;
AudioOutput        output2;

Sampler            sampler;
Sampler            sampler2;

Balance balance;
Balance balance2;
Mixer.Info[] mixerInfo;


void setup() {
  size(1200, 765);
  frameRate(fps);
  background(120);
  /////////MUSIC PLAYER//////////////////
  minimONE = new Minim(this);
  minimTWO = new Minim(this);



 mixerInfo = AudioSystem.getMixerInfo();

  for(int i = 0; i < mixerInfo.length; i++)
  {println(i + " = " + mixerInfo[i].getName());} 

  Mixer mixer = AudioSystem.getMixer(mixerInfo[2]);
  minimONE.setOutputMixer(mixer);
  output = minimONE.getLineOut(Minim.STEREO);

  Mixer mixer2 = AudioSystem.getMixer(mixerInfo[4]);
  minimTWO.setOutputMixer(mixer2);
  output2 = minimTWO.getLineOut(Minim.STEREO);





  sampleBuffer     = new MultiChannelBuffer( 1, 1024 );
  songONE = minimONE.loadFile(song1); songONE.setPan(-1); songONE.loop();

  sampleBuffer     = new MultiChannelBuffer( 1, 1024 );
  songTWO = minimTWO.loadFile(song2); songTWO.setPan(-1); songTWO.loop();
}

Kind regards, Rebecca