Topic: Pianoteq Stage 6.1 on Raspberry 3 => xruns
Hi,
I tried about a month with PT-Stage-6.0 on a Raspberry 3 (with Hifiberry-DAC+) - really nice that MODARTT decided to release an ARM version!!! I had to set the internal sample-rate to 22050Hz and the number of voices to 32. After the changes PT runs nicely - I was excited. I wrote some code around the binary for using PT-Stage-6.0 inside our Raspi-based Synth plattform Zynthian (we are using Zynthian on stage).
But after the update to 6.1 I am getting much problems with xruns (drops). Only setting the number of voices to 24 and the internal sample-rate to 11025 does work without xruns. But with such a low internal sample-rate the sound is very bad. Also there seems to be problems with the MKII (perhaps also other instruments?), because some keys are sounding very hushed and thin (especially the upper registers). As Julien told me via email, for the update to 6.1 more CPU cycles are needed for better algorithms.
Currently PT-Stage-6.1 is not really usable for Raspberry 3. So my questions are:
- Is there a chance to get this fixed (better optimization, ...) - perhaps in further versions?
- If not: is there a way for RPi users to get the old versions (try and licensed)?
- Is the support for ARM only an addition of the main path to show that is posssible, but perhaps not usable? For me this would be a very important information, because I would drop my efforts to use PT on an RPi3 without the perspective of creating instruments for live playing.
Thanks && best regards, Holger