如何从直播中保存和存储音频？

Question

On my website I have people use their phones as microphones, and ask a lecturer questions, which are then relayed to the surrounding audio system that is in the lecture hall. (Users connect via WebRTC)

However, I was wondering if there was a way to basically intercept and capture the audio that comes through the microphones and store it, so that students can access previous questions.

What would be the best ways to approach this? I looked at RecordRTC, but that only creates a new audio stream to play and records that, as opposed to allowing microphone access and recording automatically once the stream starts.

Answer 1

Please check out this recording library: https://github.com/mattdiamond/Recorderjs

And an implementation of it on this blog post: http://www.smartjava.org/content/record-audio-using-webrtc-chrome-and-speech-recognition-websockets