RtApiWasapi::getDeviceInfo: Unable to retrieve device mix format

Question

I am trying to learn how to use Processing, and so am attempting to use the sound library. When running the either of the first two example programs provided at https://processing.org/tutorials/sound/, the IDE responds with this error:

This application has requested the Runtime to terminate it in an unusual way. Please contact the application's support team for more information. terminate called after throwing an instance of 'RtAudioError' what(): RtApiWasapi::getDeviceInfo: Unable to retrieve device mix format. Could not run the sketch (Target VM failed to initialize). For more information, read revisions.txt and Help ? Troubleshooting.

Also, whenever I try to run a sketch using this library, along with that error, windows says

Java(TM) Platform SE binary has stopped working Windows is collecting more information about the problem. This might take several minutes...

Could you help me to resolve this issue? I am using a windows vista computer. This is the second example code:

 /**
 * Processing Sound Library, Example 2
 * 
 * This sketch shows how to use envelopes and oscillators. 
 * Envelopes describe to course of amplitude over time. 
 * The Sound library provides an ASR envelope which stands for 
 * attack, sustain, release. 
 * 
 *       .________
 *      .          ---
 *     .              --- 
 *    .                  ---
 *    A       S        R 
 */

import processing.sound.*;

// Oscillator and envelope 
TriOsc triOsc;
Env env; 

// Times and levels for the ASR envelope
float attackTime = 0.001;
float sustainTime = 0.004;
float sustainLevel = 0.2;
float releaseTime = 0.2;

// This is an octave in MIDI notes.
int[] midiSequence = { 
  60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72
}; 

// Set the duration between the notes
int duration = 200;
// Set the note trigger
int trigger = 0; 

// An index to count up the notes
int note = 0; 

void setup() {
  size(640, 360);
  background(255);

  // Create triangle wave and envelope 
  triOsc = new TriOsc(this);
  env  = new Env(this);
}

void draw() { 

  // If value of trigger is equal to the computer clock and if not all 
  // notes have been played yet, the next note gets triggered.
  if ((millis() > trigger) && (note<midiSequence.length)) {

    // midiToFreq transforms the MIDI value into a frequency in Hz which we use 
    //to control the triangle oscillator with an amplitute of 0.8
    triOsc.play(midiToFreq(midiSequence[note]), 0.8);

    // The envelope gets triggered with the oscillator as input and the times and 
    // levels we defined earlier
    env.play(triOsc, attackTime, sustainTime, sustainLevel, releaseTime);

    // Create the new trigger according to predefined durations and speed
    trigger = millis() + duration;

    // Advance by one note in the midiSequence;
    note++; 

    // Loop the sequence
    if (note == 12) {
      note = 0;
    }
  }
} 

// This function calculates the respective frequency of a MIDI note
float midiToFreq(int note) {
  return (pow(2, ((note-69)/12.0)))*440;
}

RtApiWasapi::getDeviceInfo: Unable to retrieve device mix format

0 Answers0