Waldorf Quantum/Iridium: write the attributes in the wording of the device

[douglas-carmichael]

The Quantum/Iridium lists four attributes next to each patch name and lets you filter the whole library by them, so for anyone converting a sizable library they are the difference between a browsable collection and a wall of names. They are written from the category, and for a part of the categories that wording does not match what the instrument's own sound sets use.

I scanned the attributes of 1855 factory and commercial patches on my Iridium to see which words are actually in use:

Synth 764, Pad 451, Atmo 400, Keys 329, FX 281, Percussive 235, Epic 228, PPG 214,
Lead 178, Bass 173, Arp 90, Noise 89, Granular 83, Strings 83, Sequenced 72,
Vocal 58, FM 53, Cinematic 47, Organ 35, Loop 31, Bells 29, Experimental 22,
Mono 16, Piano 15, Drum 15, Sample 12, World 11, Monophon 10, Pipe 8, Winds 6,
Chromatic Percussion 5, Drone 5, Pluck 5, Brass 4

Most of our categories are spelled exactly the same and are written unchanged. Thirteen are not, and those now get the device's word:

Category	written as
Keyboard	Keys
Bell	Bells
Percussion, Hi-Hat, Kick, Snare, Clap	Percussive
Loops	Loop
Acoustic Drum	Drum
Monosynth	Monophon
Orchestral	Cinematic
Ensemble	Strings
Destruction	Experimental

Before this, converting a library wrote Keyboard next to the Keys of every other patch on the device: two entries in the filter list, each finding half of the keyboard sounds.

'Unknown' is no longer written. An undetected category filled the first attribute with the literal word - my instrument has 876 patches tagged 'Unknown' from converted libraries against 3 in the entire factory content, because Waldorf leaves it empty. It is left empty now. A keyword which merely repeats the category is also no longer written into a second slot.

Reading a category back is fixed as well. Two of our own category names did not survive being written into a preset and read from it again:

• Winds was detected as FX, because the Wind sound effect is a shorter keyword and the contains-search prefers it.
• World was not detected at all - its keyword list holds only Asian, not the word itself.

The name of a category is now a keyword of its own for all of them. I verified the whole list: before the change 2 of 32 names failed the write-then-read round trip, afterwards 0 of 32. I also checked that adding the names collides with no existing keyword. This affects every format which stores the category as text, not only QPAT.

Verified by converting a 55-preset library to QPAT and reading the written headers back: every attribute is a word which the factory sound sets use, no Unknown is written, and the 11 presets whose category is genuinely unknown have an empty attribute. Each of the 13 translated words also reads back to a sensible category, so a QPAT-to-QPAT conversion keeps the category.