22 Nov
2017
22 Nov
'17
5:40 p.m.
Len Ovens <len-ODU3Ot18rIYsV2N9l4h3zg(a)public.gmane.org> writes:
On Wed, 22 Nov 2017, David Kastrup wrote:
I know on my ice1712 based D66 it is an interface shortcoming. From
what I can see of s/pdif chip sets the user info is a separate stream
that most interfaces just leave NC. The PCM stream itself does not
have anymore info than an ADC would give (it is the same
connection). So the first thing you need to do is make sure that the
user info actually makes it to the computer with your card. The D66
(and 1010) does deal with some of these extra bits (consumer/pro,
emph, etc.) but not all... but then it is not a "profesional"
interface. I know broadcast makes use of extra bits and so I would
expect interfaces made for that world to pass them through. I would
check with your card if there is any SW/drivers in the mac/win world
that deals with extra info.
Well, I don't know. I am not forced to use the RME Hammerfall Multiface
either: I do have a cheap CM106 based card somewhere as well.
The question is whether there is anything in the Linux world that would
be able to make use of this S/PDIF information for recording purposes if
I got it out. I understand that most people just read out CDs without
reverting to S/PDIF (and that's obviously faster), but I don't even know
if you can then import toc+track labels into, say, Ardour.
But in my case, I have to work with minidisks, and I have no
computer-accessible drive, just S/PDIF.
--
David Kastrup
David
Kastrup wrote:
> I have a Minidisc deck with various digital in- and outputs using
> S/PDIF. If you connect another MD deck or a CD player digitally and
> record from it, it will faithfully reproduce the titling (not sure about
> alphanumeric titles, but at least the starting points of the tracks will
> be accurate and reliable and not just based on pauses like when
> recording via the analog inputs).
Huh. Is that an ALSA shortcoming? It would seem like something worth
unifying over several drivers capable of S/PDIF. Oh, and what's the
deal with Dolby Surround via S/PDIF? That would also need some sort of
access different to PCM, wouldn't it?