Akai MPC X User Manual page 219

Tap the down-arrow icon at the top of the screen (next to the Program field) to open the Flatten Pad window,
which renders all samples on a pad as an audio sample and places it on the first layer of that pad. The resulting
sample is the audio signal produced by that pad at full velocity (127) after the pad channel strip, which means that it
includes any assigned pad insert effects and the results of warping the sample.
This function is useful if you need to reduce how CPU-intensive a pad or program is by essentially "embedding" the
warping and effects in the sample itself. By default, it will use the name of the first sample. This function works for drum
programs only. (This is the same as the Flatten Pad process shown in the program editing functions in Main Mode.)
To select the pad, press it or use the Pad menu.
To set the length of the audio tail, use the Audio Tail field. This will add extra seconds to the end of the resulting
audio file. This is useful if you are using effects or samples whose sounds exceed the defined audio length (e.g.,
long reverb or delay, one-shot samples with long decays, etc.). We recommend using an audio tail of at least a
couple of seconds.
To name the new sample, tap the Edit Name field, and use the virtual keyboard that appears.
To confirm your choice, tap Do It.
To cancel, tap Cancel.
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