On Fri, 10 Dec 2021 05:31:23 +0100 Ichthyostega <p...@ichthyostega.de> wrote:
>Am 09.12.21 um 10:56 schrieb Kristian Amlie: >> At some point, I'm not exactly sure when, I think the reseeding of the RNG >> must have stopped working. I'm getting some significant differences in >> PADsynth: > >> - "features/BasicPAD.test": Performed; detect Δ 7.16249dB(RMS) > > >Hi Kristian, > >indeed, such a result is an obvious indication that the test didn't >start with the same / pristine state. Due to phase randomisation you >then get a completely different waveform, which sounds similar, but >has sonic fluctuations slightly shifted. > >There is a not yet resolved problem lurking somewhere in the code base, >causing some state to leak through PADSynth (re)initialisation. During >the last development cycle, as a follow-up of the MIDI learn revamp, >Will improved the handling of the PADSynth apply() message. This >introduced a bug (apply() didn't happen under some circumstances), >which Will quickly resolved thereafter. > >> I'm running with with the Yoshimi power branch, and latest yoshimi-test >> master branch. > >Thus the first thing we need to ensure is that we all run from the >same code base. I generated the reference waveform with a Yoshimi >built from the latest release (2.1.2.2). Can you please repeat your >test with a build from that release (and if any differences remain, >then please post the SHA1 of the exact commit your build is based on)? > >> Could it be reseeding not working? I haven't found where this actually >> happens from yoshimi-test, so maybe you could point me to it? > >Reseeding is initiated from the "TestInvoker" within yoshimi itself. >Look at Misc/TestInvoker.h, line 315 >SynthEngine::setReproducibleState(seed) not only reseeds the PRNG, >but also explicitly forces rebuilding of PADSynth wavetables. > >-- Hermann Just want to add I'm getting no such problem here with the current master, nor the new padthread branch - both come out at -119.11dB -- Will J Godfrey https://willgodfrey.bandcamp.com/ http://yoshimi.github.io Say you have a poem and I have a tune. Exchange them and we can both have a poem, a tune, and a song. _______________________________________________ Yoshimi-devel mailing list Yoshimi-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/yoshimi-devel
