"Breathing and heart beat are filtered out and corrected for by the brain, otherwise we would have difficulties to hear a lot of things."
Interestingly, that works well in our natural environment, but not as well when you are somewhere else. When free diving (when there is no noisy scuba gear and breathing), you can hear your own heartbeat and so can the fish, sometimes at significant distances as it propagates well under water. Didier KO4BB Sent from my BlackBerry Wireless thingy while I do other things... -----Original Message----- From: Attila Kinali <[email protected]> Sender: [email protected] Date: Thu, 10 May 2012 23:25:50 To: Discussion of precise time and frequency measurement<[email protected]> Reply-To: Discussion of precise time and frequency measurement <[email protected]> Subject: Re: [time-nuts] Clocks for Audio gear On Thu, 10 May 2012 11:36:40 -0700 Hal Murray <[email protected]> wrote: > Heartbeats may be more interesting than breathing. Does anybody know of > spectrum domain data? It should be possible to collect position info while > also monitoring heartbeat and chest diameter and then crunch some numbers do > see how much of the position correlates with heartbeat vs breathing and then > plot each part in the frequency domain. Please do not forget that there is a quite sofisticated error correction system attached to the hear, which we usually refere to as "the brain". Breathing and heart beat are filtered out and corrected for by the brain, otherwise we would have difficulties to hear a lot of things. For more infos, please have a look at perceptual psychology. A not too bad introduction to that field is "Sensation and Perception" by E. B. Goldstein. But please do not expect mathematical rigor in that field. It's still a subfield of psychology. Attila Kinali -- Why does it take years to find the answers to the questions one should have asked long ago? _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
