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7/50 (LottoMax) Numbers From Sound as Source of Entropy (Vietnamese Version)

7/50 Numbers From Sound as Source of Entropy (Vietnamese Version)

This program was written with help of
ChatGPT (for the most part).
Tested/Played Around in Microsoft Edge.
Sublime - Text Editor that was coded in.

Disclaimer: This progam is not endorsed or affiliated with Products/Names mentioned.
Intended to be used to get random numbers from ambient sound around us for LottoMax since that game is 7/50
Sounds are recorded from your microphone and used as source of entropy.
Here's the code for coders to play with or use (It was mostly chatGPT's work, I just prompted it back and forth to get the right logics in place)

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>7/50 (LottoMax) Numbers From Sound as Source of Entropy</title>
</head>
<body>
  <h1>7/50 Numbers From Sound as Source of Entropy</h1>
  <button id="start">Start</button>
  <button id="stop">Stop</button hidden>
  <div id='output' style="font-size:26px"></div>
  <div id='outputlive' style="font-size:20px"></div>
</body>
</html>
<script>
// Get the buttons from the HTML
const startButton = document.getElementById('start');
const stopButton = document.getElementById('stop');
let audioContext;
let analyser;
let microphone;
let javascriptNode;
let isSpeaking = false; // Flag to indicate if the program is currently speaking
// Array to store the generated numbers
let nums = [];

startButton.addEventListener('click', startRecording);
stopButton.addEventListener('click', stopRecording);
started = 0;

function startRecording() {
  audioContext = new (window.AudioContext || window.webkitAudioContext)();
  analyser = audioContext.createAnalyser();
  analyser.fftSize = 2048;

javascriptNode = audioContext.createScriptProcessor(2048, 1, 1);
  javascriptNode.connect(audioContext.destination);
  analyser.connect(javascriptNode);

navigator.mediaDevices.getUserMedia({ audio: true })
    .then(stream => {
      microphone = audioContext.createMediaStreamSource(stream);
      microphone.connect(analyser);
      javascriptNode.onaudioprocess = processAudio;
    })
    .catch(error => {
      console.error('Error accessing microphone: ', error);
    });

}

function stopRecording() {
  if (microphone) {
    microphone.disconnect();
    analyser.disconnect();
    javascriptNode.disconnect();
  }
}
let totalBuffer = new Uint8Array(0); // Initialize an empty buffer
function chooseIt(){
  const sumOfFrequencies = totalBuffer.reduce((acc, val) => acc + val, 0);
  
  const res = (sumOfFrequencies % 50) + 1;

if (!nums.includes(res)) {
    nums.push(res);
    speakNumber(res);
    if (nums.length == 7){
      document.getElementById('output').innerHTML += nums.join(" ") + " => ";
      nums.sort();
      document.getElementById('output').innerHTML += nums.join(" ")+ "<br/>";
      nums = [];
    }
    document.getElementById('outputlive').innerHTML = nums.join(" ") + "<br/>";
    totalBuffer = new Uint8Array(0); // Reset the buffer
  } else {
    speakNumber(res);
  }
  started = 0;
}
function processAudio() {
  if (isSpeaking) return; // Skip processing if speaking

const bufferLength = analyser.frequencyBinCount;
  const dataArray = new Uint8Array(bufferLength);
  analyser.getByteFrequencyData(dataArray);

// Concatenate the new data with the totalBuffer
  let newBuffer = new Uint8Array(totalBuffer.length + dataArray.length);
  newBuffer.set(totalBuffer);
  newBuffer.set(dataArray, totalBuffer.length);
  totalBuffer = newBuffer;
  if (started == 0) {
    started = 1;
    setTimeout(chooseIt, 1618); // Schedule the first call to chooseIt
  }
}

function speakNumber(number) {
  isSpeaking = true;
  const utterance = new SpeechSynthesisUtterance(number.toString());
  utterance.lang = 'vi-VN';
  utterance.onend = () => {
    isSpeaking = false;
  };
  speechSynthesis.speak(utterance);
}

function speakText(text) {
  isSpeaking = true;
  const utterance = new SpeechSynthesisUtterance(text);
  utterance.lang = 'vi-VN';
  utterance.onend = () => {
    isSpeaking = false;
  };
  speechSynthesis.speak(utterance);
}
</script>
<br/><br/><br/>
This program was written with help of <br/>
<b>ChatGPT</b> (for the most part).<br/>
Tested/Played Around in <b>Microsoft Edge</b>.<br/>
<b>Sublime</b> - Text Editor that was coded in.<br/>
<br/>
<b><u>Disclaimer</u></b>: This progam is not endorsed or affiliated with Products/Names mentioned.<br/>
Intended to be used to get random numbers from ambient sound around us for <b>LottoMax</b> since that game is 7/50<br/>
  Sounds are recorded from your microphone and used as source of entropy.<br/>

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LottoMax with Sound as Entropy

7/50 Numbers From Sound as Source of Entropy (Vietnamese Version)

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