[linux-audio-dev] Open firewire audio interface: A back-of-an-envelope prototype plan

Bob Knight bk at minusw.com
Fri Nov 26 17:52:54 UTC 2004


smoerk wrote:
> somehow a nice idea, i only see one problem:
> 
> firewire and usb audio devices are mainly used with laptops, whih 
> normaly have only one ethernet port. if you have a desktop, you could 
> also use a pci audio card.

A multi port wire speed switch would probably set you back about $20.

In a remote recording environment, you probably would not be doing
anything else on the lan.  The pc is going to be hella busy dumping
frames onto disks.

> what about usb 2.0 audio cards? has firewire any advantage? big 
> disadvantage with firewire for x86 laptops: they mostly have 4 pin 
> firewire port, so always need external power for the firewire audio device.

> 
> Bob Knight wrote:
> 
>> I want an open ethernet audio device.
>> I do not want or need to deal with pci, firewire, usb.
>>
>> Use one of many controllers out there with a good embedded
>> linux port and build in ethernet.  Use a TDM or GPIO type
>> interface for the analog side of the world.
>>
>> TDMoE would work just fine for audio.
>> One thing that linux does well these days is ethernet.
>>
>> I need a minimum of 32 channels for live recording.
>> The idea would be to just suck in the ethernet frames and write them
>> to disk.  Then mix them down back in the studio after the show.
>>
>> I am a noop (programmer) with a EE back ground and would glad to
>> help anyone build something like this.
> 
> 
> 


-- 
Bob Knight
[-w] the work option
bk at minusw.com
925-449-9163



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