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HTML5 웹에서 마이크 녹음 기능
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>마이크 테스트</title>
</head>
<body>
<input type=checkbox id="chk-hear-mic"><label for="chk-hear-mic">마이크 소리 듣기</label>
<button id="record">녹음</button>
<button id="stop">정지</button>
<div id="sound-clips"></div>
<script>
const record = document.getElementById("record")
const stop = document.getElementById("stop")
const soundClips = document.getElementById("sound-clips")
const chkHearMic = document.getElementById("chk-hear-mic")
const audioCtx = new(window.AudioContext || window.webkitAudioContext)() // 오디오 컨텍스트 정의
const analyser = audioCtx.createAnalyser()
// const distortion = audioCtx.createWaveShaper()
// const gainNode = audioCtx.createGain()
// const biquadFilter = audioCtx.createBiquadFilter()
function makeSound(stream) {
const source = audioCtx.createMediaStreamSource(stream)
source.connect(analyser)
// analyser.connect(distortion)
// distortion.connect(biquadFilter)
// biquadFilter.connect(gainNode)
// gainNode.connect(audioCtx.destination) // connecting the different audio graph nodes together
analyser.connect(audioCtx.destination)
}
if (navigator.mediaDevices) {
console.log('getUserMedia supported.')
const constraints = {
audio: true
}
let chunks = []
navigator.mediaDevices.getUserMedia(constraints)
.then(stream => {
const mediaRecorder = new MediaRecorder(stream)
chkHearMic.onchange = e => {
if(e.target.checked == true) {
audioCtx.resume()
makeSound(stream)
} else {
audioCtx.suspend()
}
}
record.onclick = () => {
mediaRecorder.start()
console.log(mediaRecorder.state)
console.log("recorder started")
record.style.background = "red"
record.style.color = "black"
}
stop.onclick = () => {
mediaRecorder.stop()
console.log(mediaRecorder.state)
console.log("recorder stopped")
record.style.background = ""
record.style.color = ""
}
mediaRecorder.onstop = e => {
console.log("data available after MediaRecorder.stop() called.")
const clipName = prompt("오디오 파일 제목을 입력하세요.", new Date())
const clipContainer = document.createElement('article')
const clipLabel = document.createElement('p')
const audio = document.createElement('audio')
const deleteButton = document.createElement('button')
clipContainer.classList.add('clip')
audio.setAttribute('controls', '')
deleteButton.innerHTML = "삭제"
clipLabel.innerHTML = clipName
clipContainer.appendChild(audio)
clipContainer.appendChild(clipLabel)
clipContainer.appendChild(deleteButton)
soundClips.appendChild(clipContainer)
audio.controls = true
const blob = new Blob(chunks, {
'type': 'audio/ogg codecs=opus'
})
chunks = []
const audioURL = URL.createObjectURL(blob)
audio.src = audioURL
console.log("recorder stopped")
deleteButton.onclick = e => {
evtTgt = e.target
evtTgt.parentNode.parentNode.removeChild(evtTgt.parentNode)
}
}
mediaRecorder.ondataavailable = e => {
chunks.push(e.data)
}
})
.catch(err => {
console.log('The following error occurred: ' + err)
})
}
</script>
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