Re: [LAD] AVB not so dead after all

On Sat, 13 Jun 2015 11:31:07 -0700 (PDT)
Len Ovens <len@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.
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