Rich:
I'd like to hear more about the Telinga being more "shrill". What do you
mean by that? Also, what large parabola are you using? A Roche?
Is it possible that the larger parabola is simply adding more amplified low
frequencies, resulting in a somewhat warmer overall signal? Or are you
saying that any particular high frequency signal sounds different when
recorded with the smaller Telinga? A test of this would be to record some
standard signal with both parabolas, then use a steep high pass on both
recordings, but set the high pass below the frequency of the signal being
analysed. Then see if the two recordings sound more or less the same.
Or am I missing the point?
Lang
> The things that I am fighting myself with here are:
> 1. Is it agreed that the size of the focal globe changes with
> frequency?
> 2. Why do I experience a more noticed frequency gain shelf than a
> telinga when I am using a more flat and larger dish?
> 3. Why is the Telinga so much more shrill than my larger dish?
> 4. How would one measure the pressure difference and size at focus at
> various frequencies and at various different origination points?
> 5. Why does a dish amplify a freqency at 1/8 wavelength?
> 6. How does a corner reflector work compared to a dish at 1/8
> wavelength?
>
> Rich
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> "Microphones are not ears,
> Loudspeakers are not birds,
> A listening room is not nature."
> Klas Strandberg
> Yahoo! Groups Links
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