Schwerin Dom sample set conversion not useable

[larspalo]

Out of curiosity I tried downloading the free demo (Vol. 1) of Schwerin Dom from https://www.sonusparadisi.cz/en/organs/germany/schwerin-dom-ladegast-organ.html or also available at https://www.sonusparadisi.cz/en/organs/germany/schwerin-dom-ladegast-organ/schwerin-dom-ladegast-organ.html.

The 2.19 version of OdfEdit doesn't produce a playable conversion because no stops or even switches are created for controlling the ranks. I also tried with 2.18 but with no change.

This screenshot shows that the stops/switches are not created as expected:

While this shows that the ranks are available:

So it seems that only the stops with samples/pipes are actually created. Of course this can be due to some changes with the latest HW format, but I guess that it should be handled better in a conversion to GO than it currently is.

The resulting ODF from the conversion is loadable in GO without any issues/warnings but nothing's really useable except that the manuals are connected correctly and the key noises play back correctly.

[eturpault]

Hi @larspalo, this sample set is using the version 7 of the Hauptwerk organ file format. So far all or most sample sets tested with OdfEdit where using the version 4.2. OdfEdit is not converting the Stops because it does not find in the HW ODF how they are controlled. I will analyze this HW ODF to adapt OdfEdit to this controlling switches organization.
Thanks for the report.

[eturpault]

In this sample set, switches controlling a stop are linked together by two switch linkage sections, one for the switch engagement action and the other for the switch disengagement action. This is a way to do, not linked to the version 7, which was not taken into account by OdfEdit. Usually only one switch linkage section is linking two switches, for both the engagement and the disengagement actions.
Here is the GO ODF generated by OdfEdit v2.20dev taking into account this switches linkage manner. Now stops can be controlled.

Schwerin Dom, Ladegast Organ, Demo.zip

[larspalo]

@eturpault Thanks a lot, now it kind of works. It seems that the controller "Ventils" are kind of functioning backwards so that I have to disable them to get sound instead of having them active.

[eturpault]

About the blower' switch effect, the HW ODF is defining :

• the attack sample to play on switch engagement is ruchy/mech/03-dirMk22-Mech.wav
• the release sample to play on switch disengagement is ruchy/mech/rel/03-dirMk22-Mech.wav

You are right the attack sound in mech/03-dirMk22-Mech.wav is a blower release sound actually, with a switch sound at 41 seconds, and having 3 loops defined inside (set by LoopAuditioneer). The sound in mech/rel/03-dirMk22-Mech.wav is a blower release sound as well (shorter), without loops.

[larspalo]

@eturpault Sorry, the problem currently is that the "ventlis" are working backwards - that is, when disabled they allow sound through, while when active they don' t. Which I suppose is "backwards".

[eturpault]

I misunderstood your comment, sorry.
Isn't "ventil" a disabling rather than enabling button ?
If I understand well what is written in this website : https://organhistoricalsociety.org/OrganHistory/history/hist056.htm#ventil, it is explained that the ventil is made to "shut off the wind to a chest". So I suppose that when a ventil button is engaged, the wind is shut off.

I have checked in the HW ODF, there is actually an invertor linkage between the "ventil" switches and the activation state of the linked drawstops. These switches should not be engaged by default as they are in the HW ODF.

[larspalo]

@eturpault No problem. I of course think that the conversion should stay as close to the original as possible, however the original is done.

The "ventils" work by either letting air into the windchests or not. Which drawstop state that corresponds to air on or off could potentially vary depending on how it's engineered, but at least in the Norrfjärden replica and all other instruments I've seen with such features the drawstop for the "sperrventil" needs to be out (active) for letting air into the windchest.

Seeing that all screenshots on https://www.sonusparadisi.cz/en/organs/germany/schwerin-dom-ladegast-organ.html show the "ventils" as active (and I'd suspect them to be on by default) it's likely that the current conversion logic for them used by OdfEdit is "backwards".