WebRTC Acoustic Echo cancelation

Question

我目前正在从事 webrtc 项目，并且在不使用耳机或外部麦克风时遇到音频回声问题，是否有任何解决方法或解决方法

Answer 1

Echo cancellation is supposed to be on by default in WebRTC. You can turn it off to hear the difference:

 navigator.mediaDevices.getUserMedia({ audio: { echoCancellation: false } }) .then(stream => audio.srcObject = stream) .catch(e => log(e)); var log = msg => div.innerHTML += msg + "<br>";

 <audio id="audio" controls autoplay></audio><br> <div id="div"></div> <script src="https://webrtc.github.io/adapter/adapter-latest.js"></script>

Echo cancellation technology can exist at many levels - software in the browser, in the OS, and sometimes even in your hardware mic - sometimes these technologies can interfere with each other.

Not knowing your system, I would recommend checking out your system's sounds settings to make sure you don't have helpful processing happening at too many levels.

For example, on OSX, there's a use ambient noise reduction feature under Sound Settings that unintuitively works better for me with WebRTC when I turn off . You only want one chef attempting echo cancellation at the same time.

If you are working on a web site for other clients, then there's not much you can do in software, and I would expect most systems to work, if not perfectly, decently well, though a headset will always be better.

Answer 2

目前在 webrtc 中没有最好的回声消除解决方案，所以我发现最好的解决方案是使用 AEC 软件，或内置回声消除软件

Answer 3

I had the same trouble even with the video echoCancellation constraint

I could finally delete the echo/noise adding the property muted="true" to your local video element and set up the volume to 0 document.getElementById("localVideo").volume = 0

That will not prevent your localStream to have the sound but it'll cancel the noise you have locally.