Yamaha DTX-PRO Reference Manual page 65

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Screen Parameter Description
Wave Info Displays the usage of the wave memory of the DTX-PRO.
Total: Total Memory Size (MB)
Displays the total memory size in units of MB (megabytes).
Free: Free memory space (MB) (free memory space (%))
Free space is displayed in units of MB (megabytes). Also, the
free space for the entire memory is displayed as a percentage
(%). Fragmented memory may prevent importing of audio files
even when there is sufficient space. In such cases, using Opti-
mize Wave for memory optimization can resolve the issue.
Units used to denote capacity may change according to memory size (KB: kilo-
byte, MB: megabyte).
DTX-PRO Reference Manual 65