[LAD] AVB not so dead after all

[Will Godfrey]

On Sat, 13 Jun 2015 11:31:07 -0700 (PDT)
Len Ovens <len at ovenwerks.net> wrote:

> On Sun, 7 Jun 2015, Jesse Cobra wrote:
> 
> > Just a few notes, not sure if this is of any use:
> > Motu and Presonus are now shipping some semi-affordable AVB audio devices and
> > switches. The Motu switch is $295.
> 
> Here is an even cheaper switch:
> http://www.dsp4you.com/products/avb-oem-series/avb-sw
> 
> It is not Gb, just 100M, but less than half the price and possibly "good 
> enough" for testing, development, smaller channel counts (32ish?)
> 
> It appears that at the same time as being a switch it could also be set up 
> as an endpoint. There is I2S connections on it. So it could be a good 
> starter set up with switch and 8audio i/o. I think, the spec just says:
> 
> "Internal 20pin 0.1” pitch connector with TDM/I2S input & output streaming
> AVBTP (IEEE 1722) talker listener mode
> Up to 8ch per stream
> Sample rate of 44.1/48/88.2/96/176.4/192kHz
> Sample width of 20/24bit
> Automatic hardware locking to stream’s media using the IEEE 1722 
> presentation time"
> 
> And last of all, This looks like a ready to run AVB interface that will 
> work on Linux:
> http://www.dsp4you.com/downloads/AV2USB%20Datasheet.pdf
> I could not find the price though. It is limited to 8/8 i/o and looks to 
> Linux as a class compliant USB 2.0 8channel audio card. Of course those 8 
> channels can be any of the available AVB channels on the AVB network. More 
> than one of these could be used on the same computer for 16 channels (or 
> more) as they are by default synced. I would suggest a variant of zita-a2j 
> with no resample to connect 2nd and more units rather than making a 
> "multi-device". This would allow plugging and un-plugging without stopping 
> jackd. Also, if your "internal" AI has external sync capability (s/pdif or 
> word clock) it could be used by the jack back end and av2usb boxes added 
> as clients if at least one of the AVB audio IF boxes had a similar sync 
> out.
> 
> This may also be an inexpensive way of using network for audio transport 
> from one computer to another in the same LAN with low latency. Two 
> ethernet ports means a switch may not be needed. (aside from audio 
> streaming a net port would be needed to control routing too unless that is 
> somehow incorperated in the USB line)
> 
> 
> --
> Len Ovens
> www.ovenwerks.net

Better and better :D

I don't suppose anyone has written an AVB -> jack module?

-- 
Will J Godfrey
http://www.musically.me.uk
Say you have a poem and I have a tune.
Exchange them and we can both have a poem, a tune, and a song.