Music Style EQ Settings

These settings are "default" Yamaha MU80 values.

          50Hz  125Hz  900Hz  3.2kHz  6.3kHz
Jazz     -06dB  +02dB  +04dB   -04dB   -06dB

         125Hz  315Hz  1.0Hz  2.0kHz  5.0kHz  
Pops     +04dB  -04dB  +03dB   -04dB   +06dB

         125Hz  200Hz  1.2Hz  2.2kHz  6.3kHz
Rock     +07dB  +04dB  -04dB   +04dB   +02dB

          80Hz  315Hz  1.0Hz  6.3kHz  8.0kHz
Classic  +03dB  +04dB  +00dB   +02dB   -03dB

For conversion to the Roland JV/XP, the EFX 5:Spectrum 
is the closest parametric like band equalizer available.
Whereas the MU80 allows 5-band variable but fixed style 
frequency attenuation from +/- 12dB, the Spectrum EFX
allows 8-band fixed frequency attenuation with no "style"
variation.

The available Herz (Hz) frequency bands are, with their
closest MU80 equivalents:

JV/XP   MU80
250     50, 125, 200   
500     315
1k      900, 1k
1.25k   1.2k
2k      2k, 2.2k
3.15k   3.2k
4k      5k
8k      6.3k, 8k

A method for consolidating/merging MU80 decibel (dB) data
from upto three bands into one for the JV/XP synths, is to
use proportional representations of values favoring the
frequency closest to the closest frequency band. For example,
in the first case, use 1/3, 2/3, and 1 ratios for each
of the 50, 125, and 200 Hz associated dB values and scale
the result to fit the +/- 12 dB range. Since the worst case
would allow 12 * 1/3 + 12 * 2/3 + 12 * 1 = 24, dividing the
result by 2 in ALL cases would allow the full range to be
converted. Similarily, the cases for two dB frequency values
needing conversion into one dB frequency value, i.e. a worst
case would be 12 * (perhaps) 1/3 + 12 * 2/3. The actual
relative conversion facters could be weighted toward favoring
those bands closer to the merging band's value.

To do one such conversion for you, of the Jazz "style"
settings, we would convert their values from and to:

[MU80]    50Hz  125Hz  900Hz  3.2kHz  6.3kHz
Jazz     -06dB  +02dB  +04dB   -04dB   -06dB

[JV/XP]   250   500    1k     1.25k   2k  3.15k  4k   8k
EFX:5     +02     0    +04       0    0   -04    -02 -04

The last two conversion values were weighted between close
frequency bands favoring the closer band. 

The affect of the EFX "Bandwith" from 1 to 5 is also important
to consider.