[Gllug] multiple mic-in [VERY OT]

[Steve Goodwin]

> what i feel that i need is a sound card with 5 or more 
> mic-in's or a special
> mic-in card that works under linux.
> 
I've managed multiple (2) sound cards under Windows, but found the IRQ usage
prohibitive wrt other hardware (esp true if you're looking at 5+). You might
be able to get away with one card if you have a line in and mic in sockets
by using one stereo input as two mono ones, and splitting the signal
internally! This _could_ give you four inputs. Steal the cable off your CD
drive, and you've got another two. (not sure of the format this sends in
though).

Additional question: how many input streams do you need to differeniate
between at any one time? Assuming all your mics run back to node zero you
could have a noise gate in reverse that filters the loudest one (possibly
two) signals to give the soundcard. Then use the joystick port to indicate
which ones they are.

Steev

p.s. Depending on the amount of DIY you want to do, you could mix
out-of-phase copies (and/or biased versions) of 3 input waves into 2
channels, and split them in software. Or run them through an ADC and pipe
them into your parallel port. Or multiplex (as I've already heard mention). 



The information in this Internet Email is confidential and is intended
solely for the addressee. Access, copying or re-use of information in it by
anyone else is unauthorised. Please immediately notify the sender if you are
not the intended recipient and have received this mail. 
Any views or opinions presented are solely those of the author and do not
necessarily represent those of Bits Corp plc or any of its affiliates. 

Tel. +44 (0)20 8282 7200 
Fax. +44 (0)20 8450 9966

-- 
Gllug mailing list  -  Gllug at linux.co.uk
http://list.ftech.net/mailman/listinfo/gllug