Modern soundcards using stereo DACs have very little shift between the channels. Usually much less than a sample period, probably less than m-clock period (64 to 256 X the sample period). And a high res card at 24 bits (probably 20 usable) will give you a lot of data to chew on.
Demian Martin Product Design Services Date: Fri, 21 Aug 2009 22:06:28 +0000 From: Mark Sims <hol...@hotmail.com> Subject: [time-nuts] Using cheap sound cards for measurements To: <time-nuts@febo.com> Message-ID: <blu125-w21d283c0dfe19fdb6641a7ce...@phx.gbl> Content-Type: text/plain; charset="iso-8859-1" Just because the cards have the same ADC clock does not mean that they will be sampling at the same time. There will be differences in the startup characteristics, register programming, etc. that can affect just when the input is sampled. They may be sampling at the same rate, but the cards could be an indeterminate number of cycles off from each other. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
