bakker_be wrote: > Hi there, how could this (http://www.minidsp.com/products/dirac-series) > be integrated into the signal chain without losing the benefits of > John's DAC?
This is an issue I am very interested in. Dirac is a very special room correction suite, I think it is quite a bit better than the others and would very much like to get it into the CSOS flow. Dirac is a software package (NOT free) which comprises two pieces, the analysis part and the runtime part. The analysis takes the measurements and figures out what the filter should look like, and the runtime implements the filter in real time in your playback chain. Theoretically these two could be on different OS's and machines. So you analyze the room with your laptop and put the runtime on the wandboard. The dirac company has said that the runtime has been optimized to not use very much processing horsepower so it should run on a wandboard. They do have linux versions available which run on ARM processors. So the fun part is how this runtime gets integrated into the flow. Does it get somehow attached to sqeezelite, or is it a plugin for LMS etc. The off the shelf linux version creates a virtual ALSA device for your application to send samples to, and it talks to the actual ALSA hardware output device. This could easily be implemented in current CSOS flow. There may be a problem though, we are using squeezelite to implement a really good upsampling filter, if we keep this in place dirac would then be given a 352.8 or 384 stream and I'm pretty sure that is not going to work. I would prefer that dirac gets plugged in before the upsampling and I'm not sure how to do that. I need to get some discussions going with the developers to find out what they do about sample rates etc. If they can do the upsampling with a custom upsampling filter that would make things much easier. John S. ------------------------------------------------------------------------ JohnSwenson's Profile: http://forums.slimdevices.com/member.php?userid=5974 View this thread: http://forums.slimdevices.com/showthread.php?t=97881 _______________________________________________ discuss mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/discuss
