At 16.35 22/03/2007, you wrote:
>Mark, you wrote:
>
> > sample rate should further extend the definition should it not?
Raimund, you wrote:
>A higher sample rate will extend the frequency range, but not the
>dynamic range. Several cheaper A/D converters even degrade the dynamic
>range at 192 kHz or 96 kHz compared to the lower rates.
increasing the sample rate may extend the dynamic range in the sense
that it reduces the quantization noise. This could be a real benefit
if not masked by other background noises due to the analog front-end.
According to theory a very high sample rate followed by a low pass
filter produces the same result of a lower rate with more bits.
When recording dolphins I usually record with 12 bits but high rates,
say 800kHz or 1MHz.
Another benefit of recording at fast rates is a more accurate
recording of all those transients and noises that, even if low in
amplitude, make a live instrument realistic, "live". I think this is
the case of cellos and other chord instruments were transients and
noises are very important even if the notes are in the low end of the
musical notation.
Gianni
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Gianni Pavan
Centro Interdisciplinare di Bioacustica e Ricerche Ambientali
Universita' degli Studi di Pavia, Via Taramelli 24, 27100 PAVIA, ITALIA
Phone +39-0382-987874 Fax +39-02-700-32921
Email
Web http://www.unipv.it/cibra
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CIBRA organizes the XXI IBAC Congress, Pavia, 15-18 September 2007
http://www.unipv.it/cibra/xxi_ibac.html
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