Martin Langer wrote:
On Tue, Jun 10, 2003 at 12:24:21PM -0400, Paul Davis wrote:
I'm using a digital Hammerfall audio card and was wondering how to
which hammerfall? digi9652 or hdsp9652?
I think it's an older digi9652, I have to open the PC to check it out
the ALSA hardware parameter model doesn't include the notion of an
"external rate".
Is this is a design flaw? How to tell the input frequency? Need some additionnal hardware?
there is no way to differentiate between an ADAT signal at 32/44.1/48 kHz and a "bit/channel stream format" at 64/88.2/96 kHz. so we can't tell you that. however, on the hdsp series, the "External Rate" control (read only) can be used to check the rate. i don't know off hand whether it can be used for notifications via blocking on read/poll for the control.
Up to now, I thought ADAT was only defined for 44.1 and 48 kHz, but maybe I'm wrong in this point. Ok, I believe that the hw doesn't use a restriction in that point. But are there really any devices that can handle all those rates.
I checked it again, ADAT is only defined for 44.1/48 kHz. I mixed it up with the Hammerfall specifications in the manual. The supported frequencies ranges from 32 to 96kHz (SPDIF mode?)
Eric
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