code-boxx/0-JS-TTS.MD

## 0-JS-TTS.MD

      
    Raw
  

              0-JS-TTS.MD
            
          
    JAVASCRIPT TEXT TO SPEECH


https://code-boxx.com/javascript-text-to-speech/
https://youtu.be/eTcGDfnY-MI

LICENSE

Copyright by Code Boxx
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

  
## 1-simple.html
<!DOCTYPE html>
<html>
  <head>
    <title>Text To Speech Demo</title>
    <script defer src="1-simple.js"></script>
  </head>
  <body>
    <button id="demoA" disabled>Text To Speech</button>
  </body>
</html>

## 1-simple.js
if ("speechSynthesis" in window) {
  let demo = document.getElementById("demoA");
  demo.onclick = () => {
    let msg = new SpeechSynthesisUtterance("fus ro dah!");
    speechSynthesis.speak(msg);
  };
  demo.disabled = false;
}

## 2-choose-voice.html
<!DOCTYPE html>
<html>
  <head>
    <title>Text To Speech Demo</title>
    <style>
    #demoB, #demoB * { padding: 10px; }
    #demoB {
      max-width: 400px;
      background: #f2f2f2;
    }
    #demoB * {
      font-family: arial, sans-serif;
      box-sizing: border-box;
      display: block;
      width: 100%;
    }
    </style>
    <script defer src="2-choose-voice.js"></script>
  </head>
  <body>
    <form id="demoB">
      <!-- (A) VOICE PICKER -->
      <label>Choose A Voice</label>
      <select id="demoB-voice" disabled></select>

      <!-- (B) SAY SOMETHING -->
      <label>Message</label>
      <input type="text" id="demoB-msg" disabled required>
      <label>Go!</label>
      <input type="submit" id="demoB-go" disabled value="Speak">
    </form>
  </body>
</html>

## 2-choose-voice.js
if ("speechSynthesis" in window) {
  // (A) GET HTML ELEMENTS
  let demo = document.getElementById("demoB"),
      vlist = document.getElementById("demoB-voice"),
      vmsg = document.getElementById("demoB-msg"),
      vgo = document.getElementById("demoB-go");

  // (B) POPULATE AVAILABLE VOICES
  // CHROME LOADS VOICES ASYNCHRONOUSLY
  // THUS THIS "STUPID" WAY TO ATTACH AVAILABLE VOICES
  var voices = () => {
    speechSynthesis.getVoices().forEach((v, i) => {
      let opt = document.createElement("option");
      opt.value = i;
  		opt.innerHTML = v.name;
      vlist.appendChild(opt);
    });
  };
  voices();
  speechSynthesis.onvoiceschanged = voices;

  // (C) SPEAK
  var speak = () => {
    let msg = new SpeechSynthesisUtterance();
    msg.voice = speechSynthesis.getVoices()[vlist.value];
    msg.text = vmsg.value;
    speechSynthesis.speak(msg);
    return false;
  };

  // (D) ENABLE FORM
  demo.onsubmit = speak;
  vlist.disabled = false;
  vmsg.disabled = false;
  vgo.disabled = false;
}

## 3-more-controls.html
<!DOCTYPE html>
<html>
  <head>
    <title>Text To Speech Demo</title>
    <style>
    #demoC, #demoC * { padding: 10px; }
    #demoC {
      max-width: 400px;
      background: #f2f2f2;
    }
    #demoC * {
      font-family: arial, sans-serif;
      box-sizing: border-box;
      display: block;
      width: 100%;
    }
    </style>
    <script defer src="3-more-controls.js"></script>
  </head>
  <body>
    <form id="demoC">
      <!-- (A) VOLUME + PITCH + RATE -->
      <label>Volume</label>
      <input type="range" id="demoC-vol" min="0" max="1" step="0.1" value="1">
      <label>Pitch</label>
      <input type="range" id="demoC-pitch" min="0" max="2" step="0.1" value="1">
      <label>Rate</label>
      <input type="range" id="demoC-rate" min="0.1" max="10" step="0.1" value="1">

      <!-- (B) SAY SOMETHING -->
      <label>Message</label>
      <input type="text" id="demoC-msg" disabled required>
      <label>Go!</label>
      <input type="submit" id="demoC-go" disabled value="Speak">
    </form>
  </body>
</html>

## 3-more-controls.js
if ("speechSynthesis" in window) {
  // (A) GET HTML ELEMENTS
  let demo = document.getElementById("demoC"),
      vvol = document.getElementById("demoC-vol"),
      vpitch = document.getElementById("demoC-pitch"),
      vrate = document.getElementById("demoC-rate"),
      vmsg = document.getElementById("demoC-msg"),
      vgo = document.getElementById("demoC-go");

  // (B) SPEAK
  var speak = () => {
    let msg = new SpeechSynthesisUtterance();
    msg.voice = speechSynthesis.getVoices()[0];
    msg.text = vmsg.value;
    msg.volume = +vvol.value;
  	msg.pitch = +vpitch.value;
    msg.rate = +vrate.value;
    speechSynthesis.speak(msg);
    return false;
  };

  // (C) ENABLE FORM
  demo.onsubmit = speak;
  vmsg.disabled = false;
  vgo.disabled = false;
}
	<!DOCTYPE html>
	<html>
	<head>
	<title>Text To Speech Demo</title>
	<script defer src="1-simple.js"></script>
	</head>
	<body>
	<button id="demoA" disabled>Text To Speech</button>
	</body>
	</html>
	if ("speechSynthesis" in window) {
	let demo = document.getElementById("demoA");
	demo.onclick = () => {
	let msg = new SpeechSynthesisUtterance("fus ro dah!");
	speechSynthesis.speak(msg);
	};
	demo.disabled = false;
	}
	if ("speechSynthesis" in window) {
	// (A) GET HTML ELEMENTS
	let demo = document.getElementById("demoB"),
	vlist = document.getElementById("demoB-voice"),
	vmsg = document.getElementById("demoB-msg"),
	vgo = document.getElementById("demoB-go");

	// (B) POPULATE AVAILABLE VOICES
	// CHROME LOADS VOICES ASYNCHRONOUSLY
	// THUS THIS "STUPID" WAY TO ATTACH AVAILABLE VOICES
	var voices = () => {
	speechSynthesis.getVoices().forEach((v, i) => {
	let opt = document.createElement("option");
	opt.value = i;
	opt.innerHTML = v.name;
	vlist.appendChild(opt);
	});
	};
	voices();
	speechSynthesis.onvoiceschanged = voices;

	// (C) SPEAK
	var speak = () => {
	let msg = new SpeechSynthesisUtterance();
	msg.voice = speechSynthesis.getVoices()[vlist.value];
	msg.text = vmsg.value;
	speechSynthesis.speak(msg);
	return false;
	};

	// (D) ENABLE FORM
	demo.onsubmit = speak;
	vlist.disabled = false;
	vmsg.disabled = false;
	vgo.disabled = false;
	}