Importing DPCM samples

It is possible to import PCM wave files and convert to 1-bit DPCM samples. The format of the samples must be raw PCM, no compressed formats are supported. Sample rate, sample size and channel count doesn't matter, the file will be resampled according to the quality setting. However you might get better results if you resample the file manually before importing it, sample rates are described here.

Choose import in the DPCM instruments dialog, select a file and a new dialog will come up where you choose quality and volume:

Max size of one DPCM sample is 4 kB, at quality 15 (33 kHz) it's a little less than one second and lowest quality (4 kHz) about eight seconds.