Yes, exactly. But I don't know if the roll-off in the noise is
related with an overall roll-off of the frequency response of the
electronics inside the box. I should check with a high-frequency source.
In my test the EM23 is more sensitive than the NT1A, but somewhere I
read that the EM23 should be less sensitive... Any comment about this ?
Gianni
At 03.18 03/09/2006, you wrote:
>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>http://www.unipv.it/cibra
> >Email <gpavan%40cibra.unipv.it>
> <gianni.pavan%40unipv.it>
> >
> >
> >
> >"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: <telinga%40bahnhof.se>
>website: www.telinga.com
>
>
>
--------------------------------------------------------------
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
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