Hi When your "sound source" is a thumper truck, you do indeed care about some pretty low frequencies.
Bob -----Original Message----- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Hal Murray Sent: Monday, December 10, 2012 1:33 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] 31bit ADC, 1000 samples per second rlajeune...@sbcglobal.net said: > Nonetheless 20 bits indicates a matching reference would have to hold 1PPM > over temperature, no simple task. The initial post called it "TI's ADS1282 geophone ADC". I'm pretty sure that the geologists using geophones don't care about super low frequencies so they probably won't care if the reference changes due to temperature shifts. Some geologists do care about super low frequencies. That would be continental drift. -- These are my opinions. I hate spam. _______________________________________________ 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. _______________________________________________ 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.
