Hi again.
You can, and you can not... I'll try to explain:
(At least in Debian world, and AFAIK) AudioScience cards can operate in
two mutually exclusive modes:
1. An AudioScience 'native' audio engine mode, driven by its proprietary
'libHPI' kernel module: In this mode, only applications programmed and
compiled with AudioScience libHPI library can use the ASI sound card
(Rivendell is such a program) directly, independently of any Linux audio
engines such as ALSA.
2. ALSA audio engine mode. In this mode, the card loads a driver that
makes it to work with the Linux 'normal' audio engine (ALSA here) ...
becoming a normal sound card, and, therefore, any audio application will
work. Notice that, Even in this ALSA mode, if you declare the card as
managed by Rivendell (something you could do, as you can use any ALSA
sound card with Rivendell, using RDAlsaConfig GUI program) in order to
use it will 'take control' of it, making it unusable for other programs
(or at least, conflicting)
I do not know for CentOS (I use Debian) , but for Debian, only one of
the AudioScince kernel module packages (either ALSA or libHPI ) can be
present/installed on a given computer. My guess is that, being something
kernel related (The actual audio card will load a different firmware
depending on which mode will it work upon booting) this limitation will
apply to CenOS too... You may need a dedicated, separated, 'production'
machine, even connected to Rivendell.
Best regards!
On 5/26/21 2:40 AM, wa7skg wrote:
We have a Rivendell workstation in the studio running Rivendell 3.5 on
a CentOS7 platform. It has an Audioscience ASI 6540 card for audio and
works fine with Rivendell.
We would like to do some production work on this machine using
Audacity, however, Audacity does not show the ASI card as an available
resource. It does show the onboard audio, however, I really don't want
to fool with that, especially since the ASI card is already wired in
and I don't have spare channels on the small mixer we are using.
So, any ideas on how to get the ASI card working with Audacity without
blowing up Rivendell?
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