WebRTC and Google Chrome App - microphone volume adjustment

问题

I'm trying to adjust microphone volume in Chrome App. Is is possible to do it? I'm using webrtc.

回答1:

It's possible

• to use WebAudio and a gain filter to adjust the volume
• to set the volume of an audio/video tag (on the receiving end)

Here is some sample code for the first option

var audioContext = new AudioContext();
var sourceStream = audioContext.createMediaStreamSource(yourStream);
var gain = audioContext.createGain();
sourceStream.connect(gain);
gain.value = 0.9;
gain.connect(audioContext.destination);

and then use audioContext.createMediaStreamDestination().stream. yourStream is the original stream that you got from getUserMedia().

来源：https://stackoverflow.com/questions/35361958/webrtc-and-google-chrome-app-microphone-volume-adjustment