Change sample rate of AudioContext (getUserMedia)

Question

Im trying to record a 48000Hz recording via getUserMedia. But without luck. The returned audio MediaStream returns 44100Hz. How can i set this to 48000Hz?

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Answer 1

You can use an OfflineAudioContext to essentially render your audio buffer to a different sample rate (but this is batch operation).

So you would record your recording using the normal audio context, and then use an OfflineAudioContext with a different sample rate to render your buffer. There is an example on the Mozilla page.