Kurzweil Forte SE - Page 155

Program Edit Mode
KB3 Editor: The Tone Wheels (TONEWL) Page
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Upper Tone Wheel Keymap
Use this parameter to indicate the keymap (and thereby the samples) to use for the upper
tone wheels. You can use any keymap, though you must specify a keymap that uses looped
samples for KB3 Mode to work correctly.
Upper Volume Adjust
Since sample volumes can vary, while the volume of DSP-generated waveforms will remain
consistent, you may nd it necessary to adjust the level of the sample-based tone wheels. is
parameter lets you adjust the amplitude of the upper (sample-based) tone wheels relative to
amplitude of the DSP-generated tone wheels.
Number of Tone Wheels
is parameter lets you specify the number of tone wheels used by a KB3 program. e
classic tone wheel organs used 91 tone wheels, though the lowest 12 were for the pedals
only. erefore, you may nd 79 a good number of tone wheels to specify for realistic organ
emulations. is would leave you 88 voices for other programs. You can specify up to 91
tone wheels. e number of Forte SE voices used by a KB3 program is (number of tone
wheels + 1) / 2, rounded to the next highest whole number if the result is a fraction. So, for
example, with 79 tone wheels specied you would use 40 voices. Keep in mind that these
voices are permanently allocated and running while the KB3 program is selected, and cannot
be stolen. e additional voice used by KB3 programs is for keyclick.
Organ Map
e organ map controls the relative amplitude of each key, per drawbar. Like the wheel
volume maps, these maps are based on measurements we’ve made on actual organs. Equal
uses the same volume for each key and drawbar, and is not based on a real B3. Peck’s is a
good normal map, from a B3 in good condition. Eric’s is a bit more idealized; it’s smoothed
out, but less realistic. Bob’s is more uneven, based on an old B3.
Wheel Volume Map
e wheel volume map determines the volume level for each tone wheel. We’ve provided
several tone wheel volume maps here, based on measurements we’ve taken on dierent
organs. Equal is a map with all tone wheels at the same volume. It’s not based on a real B3.
Bright is a good normal map, based on a B3 in good condition. Junky is based on a B3 with
an uneven, rolled-o response. Mellow is somewhere between Bright and Junky.
You can also apply EQ to control wheel volumes based on the frequencies of each tone
wheel. See KB3 Editor: The EQ Page on page 7-94.