50kHz pitch shifter

[Scott Gravenhorst]

Hmm.  I wonder if seti at home would release any raw data?

"Grant Richter" <grichter at execpc.com> wrote:
>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.
>
>----------
>>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.
>> 
>

-- Scott Gravenhorst
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