Hi there,


i am desperately trying to figure out, how to change the playback speed of a sample with minim.

I would like to use minim as it supports mp3s and works well with metadata.

The function setSampleRate() does not exist (as it does for Gain, Pan, etc...)

So i'm trying to directly control sampling rate like shown in the minim references (http://code.compartmental.net/tools/minim/manual-controller/).

I get the error "Cannot invoke setValue(float) on the primitive type float".

This is my Code:

import ddf.minim.*;

AudioPlayer player;
Minim minim;

void setup()
{
  size(512, 200, P2D);

  minim = new Minim(this);
  
  // load a file, give the AudioPlayer buffers that are 1024 samples long
  // player = minim.loadFile("groove.mp3");
  
  // load a file, give the AudioPlayer buffers that are 2048 samples long
  player = minim.loadFile("groove.mp3", 2048);
  // play the file

  player.play();
}

void draw()
{
 
   if (player.hasControl(Controller.SAMPLE_RATE) )
  {
    // map the mouse position to the range of the sampling rate
    float val = map(mouseX, 0, width, 0, 48000);
    player.sampleRate().setValue(val);
  }
  else
  {
    text("There is no sampling rate control for this output.", 5, 15);
  }
}
  


void stop()
{
  // always close Minim audio classes when you are done with them
  player.close();
  minim.stop();
  
  super.stop();
} 

I'm starting to believe changing playback speed is not possible with minim...

Any help would be very much appreciated!

thx, * jns  

i checked minims source code and it looks like they didn't implement sample rate control. if i have some time i might look into it, maybe it's easy enough for me to fix...

anyways, changing playback rate of a sample using sonia http://sonia.pitaru.com/ works, but there is no reverse (values below zero don't work). beads http://www.beadsproject.net/ does a great job changing sample rates and even playing samples backwards.

cheers,
jns