✨ Secret Voice Keyboard Power on audio(browser requires a click) Test Sound Test Sample Master Volume Attack Decay Sustain Release Echo Time Feedback Sustain (hold) Press Space or this toggle. Key Map White keys: A S D F G H J + next row Sharps: W E T Y U O P (function(){ const root=document.getElementById('vk'); const ui={u:root.querySelector('[data-u]'),beep:root.querySelector('[data-beep]'),test:root.querySelector('[data-test]'),msg:root.querySelector('#msg'), keys:root.querySelector('[data-keys]'),g:root.querySelector('[data-g]'),a:root.querySelector('[data-a]'),d:root.querySelector('[data-d]'), s:root.querySelector('[data-s]'),r:root.querySelector('[data-r]'),echo:root.querySelector('[data-echo]'),et:root.querySelector('[data-et]'), ef:root.querySelector('[data-ef]'),hold:root.querySelector('[data-hold]')}; let ctx,master,delay,fb,mix,sample=null,active=new Map(),sustain=false; const ROOT=parseInt(root.dataset.root||'69',10); const LOW=48,HIGH=72; function isBlack(m){return [1,3,6,8,10].includes(m%12);} function rate(target,root){return Math.pow(2,(target-root)/12);} function showMsg(t){ui.msg.textContent=t;} async function ensureAudio(){ if(!ctx) ctx=new (window.AudioContext||window.webkitAudioContext)(); if(ctx.state!=='running') try{await ctx.resume();}catch(e){} if(!master){ master=ctx.createGain(); master.gain.value=parseFloat(ui.g.value); master.connect(ctx.destination); sample