Organ Preference Menu Question

Under the Audio Engine tab the Random Pitch Detuning adjustment features a percentage adjustment. The function explanations are a bit thin. Can someone explain exactly what this adjustment does and the degree of actual audio change the percentage increments represent? Also, does returning to the default 100 setting undo any changes? Are changes incremental or cumulative?
Thanks,
Doug

[mdyde]

Hello Doug,

The sample set's organ definition will define how each pipe will respond to random detuning by default (mean/maximum amount of random detuning that will be applied for the pipe, and its probability distribution). The user setting you're referring to scales the result of that, i.e. the amount by which the pipe actually gets detuned randomly will be multiplied by the user setting, so if (based on the organ definition's random detuning parameters) the randomisation model randomly chose to detune the pipe by, say, 0.3 cents, and you had set the user setting to 200% then the pipe would actually end up being detuned by 0.6 cents.

Also, does returning to the default 100 setting undo any changes?

Yes.

Are changes incremental or cumulative?

No -- as with all of the percentage adjustments, it just amplifies or attenuates (i.e. multiplies) the output of the model directly by whatever you currently have it set to.

Thanks Martin,
Is there a way to detetemine what the ODF permits?
Thanks,
Doug

[mdyde]

Thanks, Doug.

Not really, I'm afraid, other than turning the user adjustment down to zero (with a temperament other than 'original organ tuning' selected) to see whether the organ then sounds in tune as whole, then turning the user setting up to the maximum so as to see whether the organ as a whole then sounds randomly out of tune overall and by broadly how much overall.

(Note that random detuning is never applied when 'original organ tuning' is selected as the temperament. Also, I understand that some sample set producers disable Hauptwerk's random detuning model entirely for their surround sample sets [to prevent any given physical pipe being detuned differently amongst the virtual pipes used for its various perspectives], in which case the user setting would have no effect.)