Re: Multichannel audio interface
- From: Roman Rumian <rumian.wytnij.@xxxxxxxxxx>
- Date: Tue, 27 Oct 2009 09:44:09 +0100
The products from RME are a good place to start; they cover both cards and Firewire/USB, and beyond Windows and OS X they also have good Linux support. The cards use AES, MADI etc; and you will therefore need separate analog converters too; which is where much of the cost will lie.
Many soundcards support external clocking, so one option that ~might~ be cost-effective is to use mid-price devices that can be clocked together; but I can't think of examples offhand. For recording a mic array you will of course need to guarantee sample-accurate timing across all channels. So you can only use multiple "cheap" 8 channel cards if you can slave them together to an external clock.
Noet that many devices advertised as, san 32channel cards, arrive at that figure by adding up all the different types of i/.eo - analog, ADAT, AES, etc. So the Firewire/USM devices from RME may offer up to 56 channels, but perhaps only 10 analogue inputs.
Basically, you will have to decide what i/o bus format to go for - ADAT(s), multiple AES/SPDIF, MADI, and so on.
This is probably a good question to send to the sursound mailing list; it is well-subscribed by people involved, one way and another, with lots of audio channels.
many thanks for information - that is what I was looking for ! :-)
We think about our own multichannel audio interface (AKM AK5388 device is a good candidate), but we want to build a prototype measurement system first.
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