Figure 6 in the link is measuring up to 20khz over about a half second, and showing some kind of step function in the spectrum halfway through. I've no idea what they're actually recording.
On Sun, Jun 5, 2016 at 8:21 PM, Jonathan Wilkes <jancs...@yahoo.com> wrote: > I'm trying to wrap my head around this: > > http://m.cacm.acm.org/magazines/2016/6/202646-physical-key-extraction-attacks-on-pcs/fulltext > > So to answer the question-- yes, the mic has to respond. So if the worry > is cellphone microphones, I simply don't see how the mic could deliver any > useful data whatsoever to the analysis software. > > -Jonathan > > > On Sunday, June 5, 2016 8:07 PM, Matt Barber <brbrof...@gmail.com> wrote: > > > Will your mic respond? Or are the physics immaterial? > > On Sun, Jun 5, 2016 at 12:47 PM, Jonathan Wilkes via Pd-list < > pd-list@lists.iem.at> wrote: > > Hi list, > Suppose a bird sings a song in a frequency range around 1gHz. (Yes, "g"Hz) > > The song the bird sings is always exactly the same. > > The bird repeats its song several million times over the course > of an hour. > > If I record at a sampling rate of 44.1kHz below the tree in which the bird > is perched, > for a duration of one hour, would I be able to recreate the bird's song? > > -Jonathan > > > _______________________________________________ > Pd-list@lists.iem.at mailing list > UNSUBSCRIBE and account-management -> > https://lists.puredata.info/listinfo/pd-list > > > > >
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