More > JRiver Media Center 29 for Windows

DSP Change Requests

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Matt:
Is adding an A/B switch like asked for here important:
https://yabb.jriver.com/interact/index.php/topic,131945.0.html

Thanks.

JimH:

--- Quote from: Matt on February 04, 2022, 12:57:27 pm ---Is adding an A/B switch like asked for here important:
https://yabb.jriver.com/interact/index.php/topic,131945.0.html

Thanks.

--- End quote ---
No.  Let Mitchco have the business.

mwillems:

--- Quote from: Matt on February 04, 2022, 12:57:27 pm ---Is adding an A/B switch like asked for here important:
https://yabb.jriver.com/interact/index.php/topic,131945.0.html

Thanks.

--- End quote ---

So there's two related issues in that thread: there's interest in a new feature (a/b buttons) and a longstanding bug/issue in the convolution DSP user interface (listed in mattkhan's link above).

In re: the bug, the current behavior of the convolution UI is kind of counterintuitive in that unlike most of JRiver's DSP (which can be changed on the fly during playback) the convolution block doesn't detect changes to the config files on the fly.  Currently when changes are made to the underlying convolution configs or filters MC silently ignores changes until you completely restart MC, which is unexpected (stopping and starting playback is not enough).  This has the practical effect of making convolution configs or filters very hard to test or tune on the fly because MC silently ignores changes to the configuration until MC is restarted. 

So I think the issue with convolution configs or filters requiring a restart of JRiver to pick up changes is important to fix.  Especially because the fact isn't obvious from the interface at all so it leads to confusion/frustration.  Like mattkhan mentioned in the A/B thread, either watching the underlying file so that when it changes JRiver respects the changes, or including a manual "reload" button would probably resolve the issue. 

As to the feature request, I think a seamless DSP A/B switch (whether convolution specific, or more general) would be very nice to have for testing or critical listening.  But I suspect (as mattkhan alluded to in the A/B thread) fixing the convolution reloading behavior might need to happen first, and would help get people closer to being able to do some limited A/Bing on their own using the tools available.

Matt:
I added a reload button to the Convolution DSP for the next build.  I've done one of the requests in this thread!  Thanks.

mattkhan:
I think it is a valid feature request but I think it is hard to see that as important to jriver unless you were going to seriously go after that sort of market.

I think there are steps in this direction you could take, probably quite cheaply, and which would be more generally useful. Two spring to mind

1) LoadDsp mcws call does result in an audible gap as the new config takes over, eliminate this
2) allow for a some keyboard shortcut to switch between DSPs quickly (e.g ctrl+some other keys+Fnn)

I know that 2 could be done through zones, but i think that does not play nicely with zoneswitch (NB: generally speaking I would overhaul zones, zoneswitch and DSP configs but I realise that is a big, disruptive, lift) so some hotkey based system for a single zone would still be useful.

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