50kHz pitch shifter

[Grant Richter]

Look for "Music From the Galaxies" by Dr. Fiorella Terenzi.
Dr. Terenzi took radio telescope data in the range of 0.4 to 1.5Ghz
and digitally compressed it into the 20Hz to 20Khz band.

The universe sounds surprisingly much like Del Dettmar playing a Synthi.

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>From: Martin Czech <czech at Micronas.Com>
>To: tpaddock at seanet.com
>Cc: synth-diy at node12b53.a2000.nl
>Subject: Re: 50kHz pitch shifter
>Date: Tue, Jun 13, 2000, 2:39 AM
>

> A related question:
>
> When astronomers started observation out of the visible band of light
> (ie, infra red, radio, gamma etc.) they detected a whole new universe.
>
> Now, would that be true for sub and super sonic?
>
> It would be interesting to hear, what super sonic noise is on the
> streets...
>
> I've heard of people recording sub sonic phenomena (water level of a lake)
> and play that back with higher speed. This is no problem, but some kind
> of DC sampling device is needed (most audio ADC are sigma-delta and have
> a zero at DC...)
>
> And I've heard about people recording bats. Now , tape recorders are made
> for the audio band, they will not work. Same applies for most sampling
> technology. Frequency shifting will destroy harmonic relationships.
>
> Any ideas?
>
> May be it turns out, that it is all boring.
>
> Another source of interest may be stellar sound sources (base band or
> modulated).
>
> http://www.marsmicrophone.com/pulsarsounds/crab.html
>
> I'm also looking for some nice radio galaxies...
>
> m.c.
>