p5.js | setVolume() Function

Last Updated : 12 Jul, 2025

The setVolume() function is an inbuilt function in p5.js library. This function is used to control the volume of the played audio on the web. This function has a range of between (0.0) which means total silence to (1.0) which means full volume. This volume also can be controllable by a slider var by dividing that in different ranges.
 

Syntax:  

setVolume( volume, rampTime, timeFromNow )


Note: All the sound-related functions only work when the sound library is included in the head section of the index.html file.
Parameter: This function accept three parameters as mentioned above and described below.  

  • volume: This parameter holds a float number that defines the volume of the playback.
  • rampTime: This parameter holds an integer value of time in the second format after that the sound will be fade. It is optional.
  • timeFromNow: This parameter holds an integer value of time in the second format after that define event will happen.


Below examples illustrate the p5.setVolume() function in JavaScript: 
Example 1: In this example, we set the fixed volume in the code which is 0.5.  

javascript 
var sound; 

function preload() { 

    // Initialize sound 
    sound = loadSound("pfivesound.mp3"); 
} 

function setup() { 

    // Playing the preloaded sound 
    sound.play();
    //stopping the played sound after 5 seconds
    sound.setVolume(0.5);
}

Example 2: In this example, we will create a slide that will help the user to increase the volume by 0.2, and the starting volume is set to 0.2. 

javascript 
var sound; 
var slider;

function preload() { 
 
    // Initialize sound 
    sound = loadSound("pfivesound.mp3"); 
} 
 
function setup() { 
 
    // Playing the preloaded sound 
    sound.play();
    //creating sound rocker
    slider = createSlider(0, 1, 0.2, 0.2);
 
} 
 
function draw() {
    sound.setVolume(slider.value());
}

Online editor: https://editor.p5js.org/ 
Environment Setup: https://www.geeksforgeeks.org/javascript/p5-js-soundfile-object-installation-and-methods/
Supported Browsers: The browsers are supported by p5.js setVolume() function are listed below:  

  • Google Chrome
  • Internet Explorer
  • Firefox
  • Safari
  • Opera 
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