# Getting amplitude of multiple p5.Oscillators without using multiple p5.Amplitudes

**URL:** https://discourse.processing.org/t/getting-amplitude-of-multiple-p5-oscillators-without-using-multiple-p5-amplitudes/21503
**Category:** Libraries
**Created:** [June 2, 2020, 3:02pm UTC](https://discourse.processing.org/t/getting-amplitude-of-multiple-p5-oscillators-without-using-multiple-p5-amplitudes/21503 "2020-06-02T15:02:46Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![umutreldem](https://avatars.discourse-cdn.com/v4/letter/u/e5b9ba/32.png) [@umutreldem](https://discourse.processing.org/u/umutreldem)
#### Post date: [June 2, 2020, 3:02pm UTC](https://discourse.processing.org/t/getting-amplitude-of-multiple-p5-oscillators-without-using-multiple-p5-amplitudes/21503/1 "2020-06-02T15:02:46Z")

</div>

I would like to create multiple oscillators, and tie the current amplitude of each to a color dimension. Oscillator 1’s amplitude is scaled to 0-255 Red value, 2 to Green, and so on.

The problem is, setting multiple p5.Amplitude objects creates lag and audio clipping. It gets noticeable with three p5.Amplitude objects and **very** noticeable with more than that.

Is there any way I can get the amplitude of a p5.Oscillator or the current amplitude of a p5.Envelope without having to use p5.Amplitude?

```auto

var tone1;
var tone2;
var tone3;

var env1;
var env2;
var env3;

var amp1;
var amp2; 
var amp3;

function setup() {
createCanvas(windowWidth, windowHeight);

tone1 = new p5.Oscillator(440);
tone2 = new p5.Oscillator(261.63, 'triangle');
tone3 = new p5.Oscillator(391.995, 'sawtooth');

env1 = new p5.Envelope(0.2, 0.7, 0.2, 0.5, 0.5, 0);
env1.setInput(tone1);

env2 = new p5.Envelope(0.2, 0.7, 0.2, 0.5, 0.5, 0);
env2.setInput(tone2);

env3 = new p5.Envelope(0.2, 0.7, 0.2, 0.5, 0.5, 0);
env3.setInput(tone3);

amp1 = new p5.Amplitude();
amp1.setInput(tone1);

amp2 = new p5.Amplitude();
amp2.setInput(tone2);

amp3 = new p5.Amplitude();
amp3.setInput(tone3);

}

function draw() {
r = map(amp3.getLevel(), 0, 0.7, 0, 255);
g = map(amp1.getLevel(), 0, 0.7, 0, 255);
b = map(amp2.getLevel(), 0, 0.7, 0, 255);
background(0, g, b);
}

function windowResized() {
  resizeCanvas(windowWidth, windowHeight);
}

function mousePressed() {
tone1.start();
env1.triggerAttack();
console.log('attack1');
}

function mouseReleased() {
env1.triggerRelease();
}

function keyPressed() {
  tone2.start();
  tone3.start();
  console.log(key);
  if (key == 'b') {
    env2.triggerAttack();
  } else if (key == 'a') {
    env3.triggerAttack();
  }
}

function keyReleased() {
  console.log(key);
  if (key == 'b') {
    env2.triggerRelease();
  } else if (key == 'a') {
    env3.triggerRelease();
  }
 }

```