[time-nuts] Timestamping audio waveforms

Hal Murray hmurray at megapathdsl.net
Sat Mar 31 20:53:53 UTC 2018


tshoppa at gmail.com said:
> Or should I, say, take the PPS from a GPS, and feed it into channel 2, with
> the audio going into channel 1, and make a stereo recording?  ...

I assume the audio API is for a batch of samples.  If you get time stamps on 
a stream of batches, you can work out the frequency of the crystal the audio 
A/D is using.

I think you will need the PPS approach to calibrate the delay through the 
system.  If it's low enough, you can drop it.

-- 
These are my opinions.  I hate spam.






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