Audio visualizer 2d

Developer
Yoichi Kobayashi
Size
3,199 Kb
Views
44,528
  1. Audio visualizer 2d Previews
  2. Audio visualizer 2d HTML Codes
  3. Audio visualizer 2d CSS Codes
  4. Audio visualizer 2d JS Codes

How do I make an audio visualizer 2d?

What is a audio visualizer 2d? How do you make a audio visualizer 2d? This script and codes were developed by Yoichi Kobayashi on 26 August 2022, Friday.

Audio visualizer 2d Previews
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Audio visualizer 2d - Script Codes HTML Codes

<!DOCTYPE html>
<html >
<head> <meta charset="UTF-8"> <title>audio visualizer 2d</title> <link rel="stylesheet" href="css/style.css">
</head>
<body> <h1>audio-visualizer-2d</h1>
<canvas id="canvas"></canvas> <script src="js/index.js"></script>
</body>
</html>

Audio visualizer 2d - Script Codes CSS Codes

* { margin: 0; padding: 0;
}
html { height: 100%;
}
body { height: 100%; overflow: hidden; font-family: 'source code pro'; background-color: rgba(0, 30, 40, 1);
}
h1 { position: absolute; right: 0; top: 10vh; left: 0; z-index: 2; color: rgba(0, 210, 200, 1); font-size: 4vw; text-align: center;
}
canvas { position: absolute; top: 0; right: 0; bottom: 0; left: 0;
}
p { line-height: 1.5; position: relative; z-index: 2; padding: 1em; color: #00ee00; word-wrap:break-word;
}

Audio visualizer 2d - Script Codes JS Codes

(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
module.exports = function(object, eventType, callback){ var timer; object.addEventListener(eventType, function(event) { clearTimeout(timer); timer = setTimeout(function(){ callback(event); }, 500); }, false);
};
},{}],2:[function(require,module,exports){
var Util = require('./util');
var debounce = require('./debounce');
var body = document.body;
var body_width = body.clientWidth * 2;
var body_height = body.clientHeight * 2;
var canvas = document.getElementById('canvas');
var ctx = canvas.getContext('2d');
var audio_ctx = new (window.AudioContext || window.webkitAudioContext)();
var audio_analyser = audio_ctx.createAnalyser();
var audio_buffer = new XMLHttpRequest();
var audio_url = 'https://api.soundcloud.com/tracks/89297698/stream?client_id=0aaf73b4de24ee4e86313e01d458083d';
var fft_size = 512;
var init = function() { renderloop(); resizeCanvas(); initAudio(); debounce(window, 'resize', function(event){ resizeCanvas(); });
};
var initAudio = function() { audio_analyser.fft_size = fft_size; audio_analyser.connect(audio_ctx.destination); loadAudio();
};
var loadAudio = function() { var request = new XMLHttpRequest(); request.open('GET', audio_url, true); request.responseType = 'arraybuffer'; request.onload = function() { audio_ctx.decodeAudioData(request.response, function(buffer) { audio_buffer = buffer; playAudio(); }); }; request.send();
};
var playAudio = function() { var source = audio_ctx.createBufferSource(); source.buffer = audio_buffer; source.connect(audio_analyser); source.start(0);
};
var drawSpectrums = function() { var spectrums = new Uint8Array(audio_analyser.frequencyBinCount); var str = ''; var length = 0; audio_analyser.getByteTimeDomainData(spectrums); length = audio_analyser.frequencyBinCount; ctx.fillStyle = 'rgba(0, 210, 200, 1)'; ctx.lineWidth = 4; ctx.beginPath(); for (var i = 0; i < length; i++) { var x = i / fft_size * body_width; //var y = spectrums[i] / 256 * body_height; var y = (Math.log(256 - spectrums[i]) / Math.log(256)) * body_height * 0.9; if (i === 0) { ctx.moveTo(x, y); } else { ctx.lineTo(x, y); } } ctx.lineTo(body_width, body_height); ctx.lineTo(0, body_height); ctx.fill();
};
var render = function() { ctx.clearRect(0, 0, body_width, body_height); drawSpectrums();
};
var renderloop = function() { requestAnimationFrame(renderloop); render();
};
var resizeCanvas = function() { body_width = body.clientWidth * 2; body_height = body.clientHeight * 2; canvas.width = body_width; canvas.height = body_height; canvas.style.width = body_width / 2 + 'px'; canvas.style.height = body_height / 2 + 'px';
};
init();
},{"./debounce":1,"./util":3}],3:[function(require,module,exports){
var exports = { getRandomInt: function(min, max){ return Math.floor(Math.random() * (max - min)) + min; }, getDegree: function(radian) { return radian / Math.PI * 180; }, getRadian: function(degrees) { return degrees * Math.PI / 180; }, getSpherical: function(rad1, rad2, r) { var x = Math.cos(rad1) * Math.cos(rad2) * r; var z = Math.cos(rad1) * Math.sin(rad2) * r; var y = Math.sin(rad1) * r; return [x, y, z]; }
};
module.exports = exports;
},{}]},{},[2])
Audio visualizer 2d - Script Codes
Audio visualizer 2d - Script Codes
Home Page Home
Developer Yoichi Kobayashi
Username ykob
Uploaded August 26, 2022
Rating 3.5
Size 3,199 Kb
Views 44,528
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