Oberheim Matrix-12 - Page 125

Here's an example:
A very basic and easy to hear demonstration of how the Tracking Generator
re-shapes a modulation source is to modulate the pitch of VCO1 by an LFO.
We'll use a slow UP S4lV(positive Sawtooth) waveform that will produce an
effect of the note having a smooth rise in pitch with a sharp dropoff at its peak.
We are going to use TRACK to put an audible "hump" in the rising portion of
the wave. Let's set up the patch as follows:
STEP 1: You must first be sure that the MATRIX-12 is in SINGLE PATCH
Mode.
STEP 2: To hear exactly what the Tracking Generator can do without
interference from other modulations, set up the MATRIX-12's
Basic Patch by pressing and holding STORE and pressing
CLEAR in the MODULATION SOURCE/X SELECT Section.
STEP 3: Select VCO2.
Enter Page 2.
Turn off VCO 2's S4 Wwaveform. By doing so, you have
defeated the output of this VCO because in our
experimentation with TRACK we are only interested in listening
toVCOL
STEP 4: Select VCO1.
Press the button beneath FREQ in the top display.
Select TRACK X from MODULATION SOURCE SELECT. In the
Upper PAGE MODIFIER display, TRACK Xwill appear with MX"
flashing.
Press T from X SELECT to select Tracking Generator #1 .Using
Knob #1, set its Amount value to +63.
- STEP 5: Press the LFO X button in SINGLE / MULTI PATCH PAGE
SELECT.
Press it again to select LFO1.
Set its SPEEDXo 20.
Select UP SAWas its waveform.
STEP 6: Press the TRACK X button in SINGLE/MULTI PATCH PAGE
SELECT twice to select Tracking Generator #1.
STEP 7: Using Knob #1, select LFO1. LFO1 has now been selected as
the Tracking Generator's INPUT and is our modulation source
in the Patch.
We have just set up the MATRIX-12fs Matrix Modulation to perform a slow,
deep modulation. Play a note on the Keyboard and listen to the effect of the
UP SAW on the frequency of VCO1. Notice that it sounds normal as we have
not yet altered the Tracking Generator's default settings. By experimenting
with the five Track POINTS, we will see how the Tracking Generator modifies a
modulation source to do something that it cannot do normally.
Matrix-12 Owner's Manual 125