OK, latest news on this.
I set up the appropriate equalizer settings in custom-convert.conf and am happy to report that: 1. They work - the bass response is smoothed out as required. Not quite perfect yet, but I can try a bit of fine tuning. 2. Re-encoding to FLAC works just fine. The peak CPU usage on the RPi3 I've seen is about 25%, and that is only during the initial phase when playback is starting up. Once it's going, CPU usage typically sits around the 3% - 5% mark. With re-encode compression level set to 0, there is no significant latency. So I probably won't bother messing about trying to stream PCM. 3. Most importantly of all: there are no audible bass artefacts. Hooray! It would seem that the filtering code used by the HiFiBerry DSP card must have some kind of flaw which is responsible. I did wonder if perhaps the card itself had a hardware fault, but when the card is installed and all filters disabled, the bass artefacts disappear. So it has to be something to do with the filter processing. Anyway, all is now well without the DSP card installed and I'm a happy bunny. Until recently: Transporter -> ATC SCM100A, now sold :-( House move forced change to: piCorePlayer(RPi2/HiFiBerry DIGI2 Pro/HiFiBerry DSP) -> Meridian 218 -> Meridian M6 ------------------------------------------------------------------------ cliveb's Profile: http://forums.slimdevices.com/member.php?userid=348 View this thread: http://forums.slimdevices.com/showthread.php?t=114824 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/audiophiles
