At 23:58 2006-09-02, you wrote:
>At 12.41 02/09/2006, you wrote:
> > >...snip...
> > >
> > >The EM23s appear to be 4.5dB more sensitive than the Rodes.
> > >The AKG appear to be 2.5dB more sensitive than the Rodes.
> > >Then I analyzed the recording in the spectrum window of Adobe
> > >Audition 2.0 with a large FFT size (65536) and by averaging across
> > >few seconds of recording.
> > >
> > >After compensating for the different sensitivities, at 12kHz I get a
> > >noise level of -112 with the Rodes, -101dB with the EM23 and -97dB
> > >with the AKG. But a significative difference is that the noise floor
> > >is flat for the AKG and Rodes, while in the EM23 is not flat: -96dB
> > >at 6 kHz and -110 at 40 kHz.
> >
> >I'm not sure that I understand....
> >
> >Klas.
>
>To compare the recordings I normalized all to a same arbitrary peak
>level (-6dB); this way all recordings have been processed. Then I
>simply made the global spectra of each of them and overlaid all the
>graphs. On the graphs I see the noise plateau of each recording. The
>EM23 don't have the traditional white noise floor of many mics, but
>something more similar to a pink noise.
>Klas, I'll send you the graph privately.
>Gianni
So what you mean is that the EM23 has a "softer" or "smoother" noise? Less =
HF??
Klas.
>--------------------------------------------------------------
>Gianni Pavan
>Centro Interdisciplinare di Bioacustica e Ricerche Ambientali
>Universita' degli Studi di Pavia
>Via Taramelli 24, 27100 PAVIA, ITALIA
>Tel +39-0382-987874
>Fax +39-02-700-32921
>Web http://www.unipv.it/cibra
>Email
>
>
>
>"Microphones are not ears,
>Loudspeakers are not birds,
>A listening room is not nature."
>Klas Strandberg
>Yahoo! Groups Links
>
>
>
>
Telinga Microphones, Botarbo,
S-748 96 Tobo, Sweden.
Phone & fax int + 295 310 01
email:
website: www.telinga.com
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