Loading Wavetables - Expert Sleepers Disting mk4 User Manual

Loading wavetables

All wavetable files need to be in a top-level folder on the SD card called 'wavetables'.
Within the 'wavetables' folder, wavetables can take of one two forms: a single WAV file containing
all the waveforms concatenated, or a folder of WAV files, one per waveform.
By default the disting will consider all WAV files and folders of WAV files in the 'wavetables'
folder as wavetables. Optionally (say if you want to reorder the tables) you can specify a playlist:
the wavetables are then listed in the standard playlist format as above, but with the dedicated name
"playlist-wavetable.txt". Each entry is either a WAV file (as in the other playlist formats), in which
case the file is assumed to contain all the waveforms concatenated, or a folder name.
If a folder is specified in "playlist-wavetable.txt", the folder contains the individual WAV files that
represent one waveform each. The algorithm does not use any 'playlist.txt' file within the folder –
any files found files are used in alphabetical order.
Waveform WAVs must be in 16 bit mono format. The sample rate is unimportant, since the file is
assumed to contain exactly one cycle and so can pitched arbitrarily.
When using a single concatenated WAV file, the disting needs to be know how many frames in the
file make up one waveform. This is specified in the playlist via the -wavelength setting (default
600). There are no settings that apply to wavetable folders, nor to the individual files inside the
folders.
To reiterate – the use of playlists is entirely optional if your wavetables are in the form of folders of
individual waveform files. 17
A typical SD card might look like this:
17 This applies from firmware version 4.11 onwards.
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