Re: ALSA and RME Raydat troubleshooting

Vaclav Mach <vaclav.mach@xxxxxxxxxxxx> · Thu, 23 Oct 2014 12:36:23 +0200



    Does JACK cause any additional buffering/latency in the signal flow
    in comparison with pure ALSA? We have to take care of the lowest
    latency as possible.

    
    On 10/22/2014 02:17 PM, Paul Davis
      wrote:

    
          On Wed, Oct 22, 2014 at 5:39 AM,
            Vaclav Mach <vaclav.mach@xxxxxxxxxxxx>
            wrote:

            
              we have a bad experience with Jack: we were running
              jack on a computer

              with external and internal sound cards simultaneously.
              Jack was

              complaining that there is no clock sync (since there is no
              clock sync

              possibility on internal HDA / sound blaster sound cards).
            

            sure, but this doesn't have anything to do with your
              current issue or the system design you are using.

              
            JACK is perfectly capable of using any number of audio
              interfaces whether they are clock synced or not. It just
              isn't a good idea and isn't how a professional system
              would be built. It also isn't done by using the -P and -C
              arguments to the backend, because this doesn't do any
              resampling to keep the streams synchronized, but by using
              bridge clients like zita_a2j.

            
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