Hi all,
I would share some tech information about audio interfaces.
the E-MU Tracker Pre is a USB powered audio interface with 192kHz
sampling. It costs less than 150$ and offers pretty good performances.
The frequency range is flat up to 90 kHz and the anti-aliasing
filtering is good. I tested it up to 200 kHz at full level and it
produces aliased components for input signals in the range 96 to 105
kHz; resulting aliases lie in the range 96 to 87 kHz. Graphs will be
shown soon on our website.
This interface has only analog I/O. At max gain the mic inputs accept
levels up to 18mVpp (measured between pins 2 and 3 of the XLR input).
By comparison, the Edirol UA 25 EX has greater gain: at full gain
(knobs fully turned clockwise) it overloads with input level greater
than 10mV.
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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