请问js如何检测麦克风输入音量？比如指示麦克风中捕获到声音，给个提示音量大小
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<script type="text/javascript">
// navigator.mediaDevices.getUserMedia({
// audio: true, video: true
//})
navigator.mediaDevices.getUserMedia({
audio: true
})
.then(function(stream) {
audioContext = new AudioContext();
analyser = audioContext.createAnalyser();
microphone = audioContext.createMediaStreamSource(stream);
javascriptNode = audioContext.createScrip...点击查看剩余70%
by thinkfuture
我知道答案，我要回答
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