Robb Nichols wrote:
> Is there something out there in the way of an
> audio interface that can run off of bus or battery power--preferably
> well under $500. The closest thing that I've found is the M-Audio Fast
> Track Ultra, but it will only run two mic channels off of bus power. I
> haven't really looked into whether there is recording software that will=
> run two or more USB devices simultaneously.
Hi Robb,
The Avisoft-RECORDER software (multichannel version) can simultaneously rec=
ord from up to 8 individual audio interfaces:
http://www.avisoft.com/recorder.htm
However, it's not free.
To my knowledge, there are no cost-effective and bus-powered USB audio inte=
rfaces with preamps that can record simultaneously from more than two chann=
els. These constraints are mainly caused by the maximum power that an USB p=
ort can provide (5V/500mA). Though, there are special solutions available t=
hat can be entirely powered from the USB bus:
http://www.avisoft.com/usg/usg416hb.htm
http://www.avisoft.com/usg/usg416h.htm
These units can optionally be fitted with hydrophone charge amplifiers that=
are also powered from the USB bus:
http://www.avisoft.com/usg/chargeamp.htm
Unfortunately, these units are no "budget" solutions.
Best regards, Raimund
Avisoft Bioacoustics
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