Yamaha A3000 Owner's Manual page 26

6.18. Gain...
This command modifies the overall amplitude (volume) of the selected region
of the waveform. To change the amplitude (volume), drag the Rate slider to
left or right, or type a numeric value into the box.
6.19. Normalize...
This command expands/reduces the amplitude so that the peak values within
the selected region of the waveform will be the specified ratio of the upper
limit.
After this is executed, the Gain value relative to the original data will be
displayed.
6.20. Silence
This command converts the selected region of the waveform to silence.
6.21. DC Offset...
This command modifies or eliminates any DC (direct current) portion of the
selected region of the sound data. The same value will be added to all
samples in the selected region.
If you select Auto Elimination, the average value of all samples in the
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