Akai MPC 5000 Reference Manual page 106

The part between the start/end points will be saved as a new sample.
The Sample Edit window will be displayed.
The following options are available:
The Conversion will only use the left channel for conversion.
The Conversion will only use the right channel for conversion.
The conversion will combine the left and right audio channels to a single mono channel.
The current sample will be copied to a new sample, and converted to MONO. It may take some time to process depending on the length of the
sample.
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The Sample window will open.
For more information for setting the name, see the 'Setting Names' section on Page
18.
It closes the window and goes back to TRIM page.
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The Sample window will be displayed.