分析声音流而不复制它 [英] Analyze sound stream without duplicating it
本文介绍了分析声音流而不复制它的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我有一个通过WebRTC获得的音频流.我想对其进行分析,并结合以下代码以直观地显示垃圾箱.
I have an audio stream that I'm obtaining via WebRTC. I want to analyze it, and put together the following code to visually show the bins.
<div id="bins">
</div>
<style>
#bins {
position: fixed;
top: 20%;
width: 100%;
height: 40%;
-webkit-transition: 0.1s ease all;
}
.bin {
background-color: blue;
height: 100%;
width: 2px;
float: left;
}
</style>
<script>
function mediaAnalyze () {
var audio = webrtc.localStreams[0];
audioCtx = new AudioContext();
analyzer = audioCtx.createAnalyser();
source = audioCtx.createMediaStreamSource(audio);
source.connect(analyzer);
analyzer.connect(audioCtx.destination);
analyzer.fftSize = 128;
var frequencyData = new Uint8Array(analyzer.frequencyBinCount);
var bins = [];
frequencyData.forEach(function(e) {
var e = document.createElement('div');
e.classList.add('bin');
document.getElementById('bins').appendChild(e);
bins.push(e);
});
function renderFrame() {
analyzer.getByteFrequencyData(frequencyData);
frequencyData.forEach(function (data, index) {
bins[index].style.height = ((data * 100) / 256) + "%";
});
requestAnimationFrame(renderFrame);
}
renderFrame();
};
mediaAnalyze();
</script>
分析仪可以按预期工作,但激活后会听到反馈.我猜这是由于我正在创建的AudioContext.如何在保持原始音频启用的情况下禁用重复的音频/反馈(因为我需要通过WebRTC传输音频/反馈)?
The analyzer works as expected, except that I'm hearing feedback as a result of activating it. I'm guessing it's due to the AudioContext I'm creating. How can I disable duplicate audio/feedback while still keeping the original enabled (since I need to transmit it over WebRTC)?
推荐答案
不要将分析器连接到目标.只是评论
don't connect analyser to destination. just comment
//analyzer.connect(audioCtx.destination);
它应该停止反馈
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