More > JRiver Media Center 22 for Linux
JRiver Media Center 22.0.111-5 for Debian ARM
bob:
--- Quote from: mk9pa on February 05, 2017, 08:29:53 pm ---Hi Bob, I've been working on a number of other things like trying to integrate a HiFiBerry DAC+ Pro (it has issues with WiFi) and starting on room correction, so I haven't done a thorough test. I did some quick tests and my poorly-supported conclusions are: headphone jack does not show the issue, and HiFiBerry does not either. It seems specific to USB. I did not try HDMI.
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From what I understand, the USB bus shares I/O bandwidth with the Networking on the RPi. I don't think that is too likely to be the issue though.
Can you try a beefier PS on the RPi or perhaps separate power for the USB DAC (like with a powered hub).
mk9pa:
Wait, I just measured some performance data with convolution and parametric equalizers and find that 22.0.71 is running nearly 2x the speed of the same test on 22.0.63 on a Raspberry Pi 3 B. Either that or my hardware is suddenly twice as fast which seems very unlikely. Was that an improvement in this release?
bob:
--- Quote from: mk9pa on February 11, 2017, 12:42:52 am ---Wait, I just measured some performance data with convolution and parametric equalizers and find that 22.0.71 is running nearly 2x the speed of the same test on 22.0.63 on a Raspberry Pi 3 B. Either that or my hardware is suddenly twice as fast which seems very unlikely. Was that an improvement in this release?
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Interesting, I'm not sure what that would be. You might want to check the windows changelog where the general purpose changes show up.
I have played a bit with a more cpu specific build for the Pi (2 and above) but I didn't see a very significant benchmark difference so I let it slide for now.
mk9pa:
Playing a 24/88 file now on RPi 3 with Raspbian, with 22 parametric eq filters enabled, and MediaCenter is running around 25 - 32% of one CPU core. Reasonable headroom, definitely no clicks or crackling. FYI.
bob:
--- Quote from: mk9pa on February 15, 2017, 12:56:26 pm ---Playing a 24/88 file now on RPi 3 with Raspbian, with 22 parametric eq filters enabled, and MediaCenter is running around 25 - 32% of one CPU core. Reasonable headroom, definitely no clicks or crackling. FYI.
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Thanks for the report, that sounds really good.
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