Get the vibrato table used by ProTracker
Gets the vibrato table as used by ProTracker in vibrato effects.
proTrackerVibrato(x)
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As the old Commodore Amiga computer didn't have built-in mathematical functions, many programs on that machine used their own data tables. As did ProTracker for vibrato effects for which a sine function was used. As there was no sine function that could be called, sine values were stored in a table.
This function returns the integer sine values (ranging from 0 up
to 255) as a function of the table index (ranging from 0 up to 31).
Returns an integer sine value ranging from 0 up to 255
when a valid table index (x) is provided. It will otherwise return
a sine value ranging from -255 up to 255.
Pepijn de Vries
## this will return the table as used in ProTracker proTrackerVibrato(0:31)
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