Speech Synthesis

JAVASCRIPT

const msg = new SpeechSynthesisUtterance();// 객체 선언 (브라우저에 내장 되어있는 주어진 텍스트를 소리로 바꿔주는 TTS API)
let voices = [];
const voicesDropdown = document.querySelector('[name="voice"]');
const options = document.querySelectorAll('[type="range"], [name="text"]');
const speakButton = document.querySelector('#speak');
const stopButton = document.querySelector('#stop');
msg.text = document.querySelector('[name="text"]').value;

function populateVoices() {
    voices = this.getVoices();
    voicesDropdown.innerHTML = voices
        .filter(voice => voice.lang.includes('ko'))
        .map(voice => `<option value="${voice.name}">${voice.name} (${voice.lang})</option>`)
        .join(''); // 옵션 생성 
}

function setVoice() {
    msg.voice - voices.find(voice => voice.name === this.valye);
    toggle();
}
/*소리를 설정 이벤트를 목소리를 설정하는 함수 
TTS 정보를 관리하는 msg 객체의 voice 값을 바꿔준 후 직접 작성한 toggle() 함수로 목소리를 다시 재생한다. */


function toggle(startOver = true) {
    speechSynthesis.cancel();
    if(startOver){
        speechSynthesis.speak(msg);
    }
}
/* 음성을 재생하는 toggle() 작성 인자로 startOver를 넘기고, 기본 설정 인자인 true인 경우 
  이전 음성을 취소하고 새로운 음성을 재생하며, false를 인자로 주면 음성만 취소한다. */
  
  
function setOption(){
    console.log(this.name, this.value);
    msg[this.name] = this.value;
    toggle();
}
/* 다른 설정을 바꿀 수 있는 setOption() 작성하기
   input 객체의 name을 변경할 속성의 이름과 일치시키면 input 객체의 value로 별도로 옵션을 구별하여 작성할 필요없이 한번에 사용할 수 있다.*/

// ->  함수들을 이벤트로 걸어준다.
speechSynthesis.addEventListener('voiceschanged', populateVoices);
voicesDropdown.addEventListener('change', setVoice);
options.forEach(option => option.addEventListener('change', setOption)); // 옵션이 변경될때 마다 실행 
speakButton.addEventListener('click', toggle);
stopButton.addEventListener('click', ()=> toggle(false));

HTML

<div class="voiceinator">

<h1>speak 버튼을 눌러보세요!</h1>

<select name="voice" id="voices">
    <option value="">Select A Voice</option>
</select>

<label for="rate">Rate:</label>
<input name="rate" type="range" min="0" max="3" value="1" step="0.1">

<label for="pitch">Pitch:</label>

<input name="pitch" type="range" min="0" max="2" step="0.1">
<textarea name="text">안녕하세요. 반가워요.😊</textarea>
<button id="stop">Stop!</button>
<button id="speak">Speak</button>
</div>

CSS

html {
  font-size: 10px;
  box-sizing: border-box;
}

*, *:before, *:after {
  box-sizing: inherit;
}

body {
  margin: 0;
  padding: 0;
  font-family: sans-serif;
  background-color: #3BC1AC;
  display: flex;
  min-height: 100vh;
  align-items: center;

  background-image:
  radial-gradient(circle at 100% 150%, #3BC1AC 24%, #42D2BB 25%, #42D2BB 28%, #3BC1AC 29%, #3BC1AC 36%, #42D2BB 36%, #42D2BB 40%, transparent 40%, transparent),
  radial-gradient(circle at 0    150%, #3BC1AC 24%, #42D2BB 25%, #42D2BB 28%, #3BC1AC 29%, #3BC1AC 36%, #42D2BB 36%, #42D2BB 40%, transparent 40%, transparent),
  radial-gradient(circle at 50%  100%, #42D2BB 10%, #3BC1AC 11%, #3BC1AC 23%, #42D2BB 24%, #42D2BB 30%, #3BC1AC 31%, #3BC1AC 43%, #42D2BB 44%, #42D2BB 50%, #3BC1AC 51%, #3BC1AC 63%, #42D2BB 64%, #42D2BB 71%, transparent 71%, transparent),
  radial-gradient(circle at 100% 50%, #42D2BB 5%, #3BC1AC 6%, #3BC1AC 15%, #42D2BB 16%, #42D2BB 20%, #3BC1AC 21%, #3BC1AC 30%, #42D2BB 31%, #42D2BB 35%, #3BC1AC 36%, #3BC1AC 45%, #42D2BB 46%, #42D2BB 49%, transparent 50%, transparent),
  radial-gradient(circle at 0    50%, #42D2BB 5%, #3BC1AC 6%, #3BC1AC 15%, #42D2BB 16%, #42D2BB 20%, #3BC1AC 21%, #3BC1AC 30%, #42D2BB 31%, #42D2BB 35%, #3BC1AC 36%, #3BC1AC 45%, #42D2BB 46%, #42D2BB 49%, transparent 50%, transparent);
  background-size:100px 50px;
}

.voiceinator {
  padding: 2rem;
  width: 50rem;
  margin: 0 auto;
  border-radius: 1rem;
  position: relative;
  background: white;
  overflow: hidden;
  z-index: 1;
  box-shadow: 0 0 5px 5px rgba(0,0,0,0.1);
}

h1 {
  width: calc(100% + 4vw);
  margin: -2vw 0 2vw -2vw;
  padding: 20px;
  background: #ffc600;
  border-bottom: 5px solid #F3C010;
  text-align: center;
  font-size: 2.5vw;
  font-weight: 500;
  text-shadow: 3px 3px 0 #F3C010;
}

.voiceinator input,
.voiceinator button,
.voiceinator select,
.voiceinator textarea {
  width: 100%;
  display: block;
  margin: 10px 0;
  padding: 10px;
  border: 0;
  font-size: 2rem;
  background: #F7F7F7;
  outline: 0;
}

textarea {
  height: 20rem;
}

.voiceinator button {
  background: #ffc600;
  border: 0;
  width: 49%;
  float: left;
  margin-bottom: 0;
  font-size: 1.6vw;
  border-bottom: 5px solid #F3C010;
  cursor: pointer;
  position: relative;
}

.voiceinator button:active {
  top: 2px;
}

.voiceinator button:nth-of-type(1) {
  margin-right: 2%;
}