OrganoPleno wrote:Is there anything to be done about the variable high-pitched Shriek which seems to be some interaction between certain Reverb settings and the Attack on certain pipes, especially those with higher frequency components?
Concerning the adventitious sound which I referred to earlier, both here and in the "possible bugs" thread.
I have carefully investigated my settings, and determined that this is NOT any kind of overload, but is a direct result of the physical model. Checking sample rate, buffer size, polyphony, and watching the CPU/Audio load indicators, both on the main screen and in Settings.
Audio overload can easily be produced by disabling multi-core support, but this abrupt harsh sound is nothing like what I am referring to.
Rather, it is an effect of the "attack" phase in the model, which appears more strongly in certain contexts.
When many sounds (many notes and many stops) are played together, the effect is additive, and can be quite "striking". Best described as a high-pitched metallic percussive effect.
It is NOT affected by the reverb settings, but still occurs even with reverb disabled. And it occurs regardless of the temperament selected.
Playing notes at the upper end of the keyboard, the effect moves into "ultrasound" beyond what I can hear, and thus is no problem. Playing notes at the lower end of the keyboard, the effect appears at a much lower pitch and so does not sound so metallic or so percussive, hence no problem,
Playing just a few notes and stops, it can be heard as an exaggerated "chiff" in the Attack, but is not particularly a problem. Also, however, not particularly satisfactory, as romantic-style Organs eg by Cavaille-Coll do NOT have "chiff" anywhere near this prominent.
Playing LOTS of notes, big chords with LOTS of stops pulled... the beautiful Organ sounds pretty well drown out these unwanted "chirps" so the effect is once again quite satisfactory.
So there we are... an effect of mid-range notes with middle-full chords and middle-full registrations.
Interestingly... each session when I play OrganTeq, the effect appears less intrusive. Apparently, the listener's EXPECTATION seems to play into things rather strongly.
My own "expectation" for Pipe Organ sounds is based on years of listening to live instruments and good quality recordings, and on playing the Hauptwerk Program on a high-end system (console, CPU, and Audio).
The Organteq sounds are overall very nice, and as I stated earlier, it is a lot of fun to play and the Program shows tremendous potential. But it is not yet ready for the "big time", eg public performance, as various curiosities within the Model do appear from time to time, as well as the afore-mentioned "chirp" which is clearly neither authentic nor desirable.
Again, thanks for this interesting and exciting new Release, and wishing All the Best to the Development Team as they carry the program forward to its next Version.
Sincerely, -- OrganoPleno
