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Compress all the bits

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This commit is contained in:
ehpersonal38
2022-05-29 13:29:44 -04:00
parent a2715ddc14
commit 278227f559
1 changed files with 61 additions and 10 deletions
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scripts/spectrogram.php
+61 -10
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@@ -177,6 +177,32 @@ window.setInterval(function(){
loadDetectionIfNewExists();
}, 500);
var compressor = undefined;
var SOURCE;
var ACTX;
var ANALYSER;
function toggleCompression(state) {
//var biquadFilter = ACTX.createBiquadFilter();
//biquadFilter.type = "highpass";
// biquadFilter.frequency.setValueAtTime(13000, ACTX.currentTime);
if(state == true) {
SOURCE.disconnect(ANALYSER);
SOURCE.disconnect(ACTX.destination);
SOURCE.connect(compressor);
compressor.connect(ANALYSER);
compressor.connect(ACTX.destination);
//biquadFilter.connect(ANALYSER);
//biquadFilter.connect(ACTX.destination);
} else {
SOURCE.disconnect(compressor);
compressor.disconnect(ACTX.destination);
compressor.disconnect(ANALYSER);
SOURCE.connect(ANALYSER);
SOURCE.connect(ACTX.destination);
}
}
function initialize() {
document.body.querySelector('h1').remove();
const CVS = document.body.querySelector('canvas');
@@ -184,21 +210,34 @@ function initialize() {
const W = CVS.width = window.innerWidth;
const H = CVS.height = window.innerHeight;
const ACTX = new AudioContext();
const ANALYSER = ACTX.createAnalyser();
ACTX = new AudioContext();
ANALYSER = ACTX.createAnalyser();
ANALYSER.fftSize = 2048;
try{
process();
} catch(e) {
console.log(e)
window.top.location.reload();
}
function process() {
const SOURCE = ACTX.createMediaElementSource(player);
SOURCE = ACTX.createMediaElementSource(player);
SOURCE.connect(ANALYSER);
SOURCE.connect(ACTX.destination)
SOURCE.connect(ACTX.destination);
compressor = ACTX.createDynamicsCompressor();
compressor.threshold.setValueAtTime(-50, ACTX.currentTime);
compressor.knee.setValueAtTime(40, ACTX.currentTime);
compressor.ratio.setValueAtTime(12, ACTX.currentTime);
compressor.attack.setValueAtTime(0, ACTX.currentTime);
compressor.release.setValueAtTime(0.25, ACTX.currentTime);
document.getElementById("compression").removeAttribute("disabled");
console.log(SOURCE);
const DATA = new Uint8Array(ANALYSER.frequencyBinCount);
const LEN = DATA.length;
const h = (H / LEN + 0.9);
@@ -263,12 +302,19 @@ h1 {
<img id="spectrogramimage" style="width:100%;height:100%;display:none" src="/spectrogram.png?nocache=<?php echo $time;?>">
<div id="gain" class="centered">
<label>Gain: </label>
<span class="slidecontainer">
<input name="gain_input" type="range" min="0" max="255" value="128" class="slider" id="gain_input">
<span id="gain_value"></span>%
</span>
<div class="centered">
<div style="display:inline" id="gain" >
<label>Gain: </label>
<span class="slidecontainer">
<input name="gain_input" type="range" min="0" max="255" value="128" class="slider" id="gain_input">
<span id="gain_value"></span>%
</span>
</div>
—
<div style="display:inline" id="comp" >
<label>Compression: </label>
<input name="compression" type="checkbox" id="compression" disabled>
</div>
</div>
<audio style="display:none" controls="" crossorigin="anonymous" id='player' preload="none"><source src="/stream"></audio>
@@ -285,4 +331,9 @@ slider.oninput = function() {
output.innerHTML = this.value;
gain=Math.abs(this.value - 255);
}
var compression = document.getElementById("compression");
compression.onclick = function() {
toggleCompression(this.checked);
}
</script>