When keys remain unoccupied, the application will populate them with automatically generated, musically useful playback variations. The way these variations are generated depends on their sample attributes.
Variations for samples with the 'loop' attribute set, will alternate between rhythmically useful pitch frequency multiples. This includes, for example, 2x speed ups, 2x slow downs and their reversed variants.
Overlaying the variants over their original samples, can yield interesting drones and novel rythmical patterns. Overlaying higher pitched variants can further mask any loss in high frequencies in case of severe downsampling.
Variations for all other samples will alternate between slightly pitched up and pitched down variants. This also includes their reversed variants.
'Drumkit PO-33.7' will launch the application in PO-33 mode and will squeeze all samples in that folder into 7 seconds.
You do not need samples for every key; samples are automatically re-used and pitched up or down as needed for you.
Add all samples in the form of WAV files to the directory.
Playing back the sample you will hear a calibration tone followed by the sped up samples.
OP-1 / OP-Z / PO-33 sample packer 1.0 for Windows 64-bit, macOS and Linux 64-bit.
You can convert everything you see to a format you find convenient. Give it a try!