Roland SPD-SX PRO Sampling Pad with 32GB Internal Memory - Manual (Page 88)

Importing and Managing Audio Files (WAVE)
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6. Use the cursor [ г ] [ в ] buttons to select “OK”, and press the [ENTER] button.
If you decide to cancel, select “CANCEL” and press the [ENTER] button.
Wave numbers and wave names are automatically added to the waves you import.
The first 16 characters of the import source audio filename are used as the wave name.
You can check these waves in the wave list.