Jonathan, I demand that you do a patch that records the first 8 bars from “And your bird can sing” from beatle`s revolver album, sampling @ < 1 hz in more than 12 hours of that loop in the speaker with a mic close to it. Salutti :)Lucarda. Mensaje telepatico asistido por maquinas.
> Date: Sun, 5 Jun 2016 13:15:27 -0700 > From: m...@ucsd.edu > To: jancs...@yahoo.com > CC: pd-list@lists.iem.at > Subject: Re: [PD] high-frequency birdsong > > Strange kinda bird you've got there... > > If you use a standard 44K1 audio interface, everything above Nyquist gets > filtered out before conversion. You could in principle use a 1GhZ-bandwidth > sample/hold clocked at 44K1 - this would effectively alias everything down > to audio frequencies (folded over 1e9/44100 times). At that point, IF the > S/H is clocked at a rate that's incummensurable withth erepetition rate of > the signal you've got, you can then reassemble a non-uniformly sampled > collection of points, leaving no space between them greater than 1/(2E9) > seconds - then the sampling theorem says that you can theoretically > reconstruct trhe original signal. > > Don't forget a 1gHz low-pass filter, else if the bird hits higher pitches > they will fold over :) > > M > > On Sun, Jun 05, 2016 at 04:47:51PM +0000, Jonathan Wilkes via Pd-list 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 > > > _______________________________________________ > Pd-list@lists.iem.at mailing list > UNSUBSCRIBE and account-management -> > https://lists.puredata.info/listinfo/pd-list
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