Re: [LAD] AVB not so dead after all

Sounds awesome Fernando.

I have a few of the XMOS AVB endpoints I am not using if anyone wants one.

On Mon, Jun 8, 2015 at 7:14 PM, Fernando Lopez-Lezcano <
nando@email-addr-hidden> wrote:

> On 06/07/2015 07:15 AM, Len Ovens wrote:
> ...
>
>> Why is this? Linux is based on lowest common denominator hardware... we
>> call it the PC. The Linux world has gotten much better preformance out
>> of this box than it was designed for. But, in the case of audio, the HW
>> does limit performance at least with AoIP. That limit is the clock. The
>> PC does not have a HW PTP clock built in and in this case software is
>> not good enough. The way around this is with a custom NIC that does. For
>> some reason even though one can buy an ethernet chip that includes a
>> stable PTP clock for less than $5, any NICs I have found with a PTP
>> clock are closer to $1k.
>>
>
> An Intel I210 Gigabit Ethernet PCI express Card will set you back about
> $70 on Newegg, it does have the hardware support that AVB needs and a
> driver in the OpenAVB project. I have a couple and they seem to work just
> fine. A 24 output AVB Motu box is $995.
>
> I'm actually trying to get this going with one of these AO24 Motu
> "soundcards" (starting with OpenAVB). I have gotten as far as the OpenAVB
> stack talking to the Motu card and slaving its clock to it (and the Motu
> box recognizing it is now the master clock source and AVB is active). Audio
> streaming is next, I'm just not finding the free time to do this (anyone
> gotten further along on this??).
>
> First goal would be a simple jack client that can stream samples, end game
> would be a jack backend so this can be treated as a soundcard. We'll see...
>
> -- Fernando
>
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Received on Tue Jun 9 08:15:02 2015