web audio api changes sample rate when a working draft is released?

Question

I trying to develop a simple guitar tuner based on harmonic detection using the web audio API and js. https://github.com/lontafara/El-audio-en-la-web

I have always worked with a sample rate of 48000 Hz. Allowing me some resolution in the frequency domain. But whenever a working draft of the Web Audio API is published, this value automatically changes to 44100 for a while.

I realized for the first time in the version of 13 December, and now on April 25.

The .samplerate attribute is a readonly constant and i cant change it.

my question is, Can I continue working with a sample rate of 48000, or i've got to change to 44100? Is this change temporary, because last week the default sampling rate was still 48000?

Thank you!!!

Answer 1

The Web Audio API runs at whatever the default output device's sampling rate is. That is frequently 44.1kHz, but it is system-dependent. You shouldn't hardcode a sampling rate into your code.

Answer 2

Ok, as cwilso says the web audio API runs at the default device sample rate. In my case, I had to adjust the value of 44100 to get my application working properly. In Mac OS the output is set on Utilities -> Audio MIDI Setup.

There are no relation between the Web Audio API updates.

Thanks again cwilso