Apple MainStage 3 Instruments - MainStage 3 Instruments
Apple MainStage 3 Instruments - MainStage 3 Instruments
Apple MainStage 3 Instruments - MainStage 3 Instruments
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Vintage B3 draw bar controls<br />
Vintage B3 provides 20 draw bars, nine each for the upper and lower manuals, and two for the<br />
pedalboard. The upper manual draw bars are on the left, the pedal draw bars are in the center,<br />
and the lower manual draw bars are to the right.<br />
The draw bars behave like reversed mixer faders—the farther down you drag the draw bars, the<br />
louder the selected sine choirs will be. MIDI control of the draw bars is also reversed when using<br />
a standard MIDI fader unit.<br />
Each sine choir is a sine wave that is mixed in at a particular level, determined by the draw<br />
bar position. You add sine choirs in this way to build up the overall organ sound for the upper<br />
or lower manual. This is a basic form of additive synthesis; for more information, see Additive<br />
synthesis with draw bars on page 428. You can intuitively pick up the fundamental principles of<br />
additive synthesis by playing a little with the draw bars.<br />
Two draw bars are available for the bass pedals. The waveform used for the bass pedal sound is<br />
not a pure sine wave, like the waveforms used for the upper and lower manuals. The pedalboard<br />
sound uses a mixed waveform, which accurately emulates the B3’s bass tones. The two registers<br />
differ in pitch, with the left, 16-foot register containing more octave harmonics. The right, 8-foot<br />
register has a more prominent fifth portion (fifth harmonics are enhanced). The term foot is<br />
derived from pipe organ lengths.<br />
You can simulate the behavior of the Model A, the first Hammond organ ever made. This model<br />
had no foldback for the 16' draw bar in the lowest octave, with the bottom 12 tone generator<br />
outputs available on the first draw bar of the manuals’ bottom octave. Without foldback, the<br />
sound is more strident and similar to the pedal sound. Click the disclosure triangle at the lower<br />
left, then choose “all the way down” from the Bass pop-up menu to simulate the Model A.<br />
Chapter 15 Vintage B3 396