<pre style="margin: 0em;">Here my experience withe laptop recording by using
external audio in
with mic preamplifiers and P48 powering:</pre><br>
<pre style="margin: 0em;">The Edirol UA 5, although having a USB 1 interface,
works well with
low noise and flat response. It is very cheap now. Requires external
DC power you can provide with a battery. Drivers are solid, in
demanding applications it is important to set the internal buffer (in
Control Panel) to max size.</pre><br>
<pre style="margin: 0em;">The UA25 is even better, USB 2 and self-powered, but
a bit less
flexible as it lacks line level inputs. Though be aware that some
early units have strange interferences; for example, mine has a 12 kHz
line that disappears when the unit warms up. In cold conditions I have
to put it below the laptop to keep it warm!!! A friend of mine got
back his money because Edirol service admitted it was a defect.</pre><br>
<pre style="margin: 0em;">If you like FireWire, the M-audio FireWire 410 is
excellent and very
solid. Requires external power, but I don't remember if it requires
AC or DC. (...Always check for external power requirements: some units
require 9 or 12 V AC!!!)</pre><br>
<pre style="margin: 0em;">Last solution I successfully tested is based on
CoreSound Mic2496
optically coupled (this is great to reduce any possible interference)
to CoreSound PDAudio CF card (just pure digital input without
resampling).</pre><br>
<pre style="margin: 0em;">Info on other options is welcome!
Gianni</pre><br>
<tt><br>At 19.17 10/02/2005, you wrote:
</tt><blockquote style="border-left: #5555EE solid 0.2em; margin: 0em;
padding-left: 0.85em"><pre style="margin: 0em;">Further to Jim Nollman's email
about using a laptop / sound card to
make field recordings: While this is my own preferred method, anyone
hoping to sample at 96 kHz to record up to 48 kHz should be extremely
careful about the sound card they buy. Several seem to have a low
pass filter at around 22 or 24 kHz whatever sample rate you run them
at, so you don't benefit at all from the higher sampling rate. Low
frequency response may also be a serious issue since most cards are
designed purely to capture audible sounds.</pre><br>
<pre style="margin: 0em;">Low pass filtering at around 22 kHz is definitely
the case with the
Sound Blaster Extigy and the Edirol UA-20 (USB devices). The M-audio
delta 44 (PCI interface so no good in laptops) is OK. I've not tested
any others, but if anyone has found a USB sound card which will
genuinely record to 48 kHz at 96 kHz sampling, I'd be interested to
know.</pre><br>
<pre style="margin: 0em;">Happy recording,</pre><br>
<pre style="margin: 0em;">Douglas Gillespie
[EMAIL PROTECTED]
www.ifaw.org/sotw</pre><br>
</blockquote><pre style="margin:
0em;">--------------------------------------------------------------
Gianni Pavan
Email [EMAIL PROTECTED]
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 <a href="http://www.unipv.it/cibra";
rel="nofollow">http://www.unipv.it/cibra</a></pre><br>
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