How ro record audio?

kinesthtiaSonja

Is there a way to record audio output from a sketch? I have code and library to record video that is images, but I am playing back audio and would like to record that as well.

My apologies if this question has already been asked — I have been searching for through the forum, but I could not find a relevant post.

jeremydouglass

Import the minim library, then use the AudioRecorder object and its save() method:

• http://code.compartmental.net/minim/audiorecorder_method_save.html

kinesthtiaSonja

I am trying to use the minim library to record a mp3 that is manipulated with a motion sensor. However, the recordings I am making are coming up empty. Here is my code:

import processing.serial.*;
import cc.arduino.*;
import org.firmata.*;
import processing.sound.*;
import ddf.minim.*;
import ddf.minim.ugens.*;

Arduino ardy;

SoundFile quick;
int senVal;
Minim         minim;
AudioOutput   out;
AudioRecorder recorder;

void setup() {
  fullScreen(P3D);
  noCursor();
  background(0);

  //Getting Arduino Data
  println(Arduino.list());
  ardy = new Arduino(this, "COM3", 57600); 
  ardy.pinMode(0, Arduino.INPUT);

  //sound
  quick = new SoundFile(this, "QUICKENING.mp3");
  quick.loop();

  //record sound
  minim = new Minim(this);
  out = minim.getLineOut();
  recorder = minim.createRecorder(out, "quickening_live.wav");

  frameRate(25);
}

void draw() {
  //Sensor Data
  senVal = ardy.analogRead(0);
  println(senVal);
  quick.rate(map(senVal, 70, 10, 1, 0.25)); 
}

void keyReleased(){
  if ( key == 'r' ) {
    if ( recorder.isRecording() ) {
      recorder.endRecord();
    } else {
      recorder.beginRecord();
    }
  }

  if ( key == 's' ){
    recorder.save();
    println("Done saving.");
  }
}

kfrajer

You should do everything in minim, instead of accessing audio using processing.sound. I will start with these :

http://code.compartmental.net/minim/audioplayer_method_play.html
http://code.compartmental.net/minim/minim_method_createrecorder.html

You can also skip the arduino part. Instead, you can map senVal to the mouse position in the screen to simulate the arduino part:

quick.rate(map(mouseX, width,0, 1, 0.25));

Kf

Aurelian24

Im tryng the same thing without any success.

this would be the combination of > kfrajer but is coming out empty anyway.``

`import ddf.minim.*;

import ddf.minim.ugens.*;

Minim         minim;
AudioOutput   out;
AudioRecorder recorder;
AudioPlayer sonido;
void setup()
{
  size(512, 200, P3D);

  minim = new Minim(this);

  out = minim.getLineOut();
  sonido = minim.loadFile("fijo2.wav");
  sonido.loop();

  recorder = minim.createRecorder(out, "myrecording.wav");  
  textFont(createFont("Arial", 12));
}

void draw()
{
  background(0); 
  stroke(255);
}

void keyReleased()
{
  if ( key == 'r' ) 
  {
    if ( recorder.isRecording() ) 
    {
      recorder.endRecord();
    }
    else 
    {
      recorder.beginRecord();
    }
  }
  if ( key == 's' )
  {
    recorder.save();
    println("Done saving.");
  }
}`

kfrajer

Continue here: https://forum.processing.org/two/discussion/28028/how-do-i-record-the-audio-input-to-a-new-audio-render-using-minim#latest

@koogs please close this one.

Kf