Oberheim Matrix-12 - Pressure - After-Touch; VCF Frequency Modulation by Pressure; VCA Modulation by Pressure; LFO Amount Modulation by Pressure

Release Velocity can be applied simultaneously in negative amounts to the
RELEASE times of these same Envelopes. In this instance, R VEL will
shorten the Release time of the Envelope(s) the faster the Keys are released.
The speed in which keys are released will determine how quickly the sound will be
cut off.
PRESSURE
(After-Touch) VCF Frequency Modulation by PRESSURE
Another way of modulating the Filter is through the use of keyboard Pressure or
After-Touch as it is referred to by other manufacturers. This feature is activated by
playing a note or chord on the MATRIX-12's Keyboard and pressing into the keys.
If you are playing the MATRIX-12from MIDI IN, the Master controller that you are
using must have Pressure or After-Touch. If it does not, this MIDI PRESSURE will
not work.
In this application, Pressure is used to modulate VCF FREQ. Remember to
change the initial VALUE X amount of FREQXo a setting that is lower than its
programmed amount.
VALUE X range: -63 to +63. A setting of 0 means that keyboard PRESSR has
no-effect. Using a positive Value causes PRESSR\o "open" the Filter and thus
adds more brightness to the sound. Using a negative Value "closes" the Filter
from its initial amount and causes the sound to become "dull" or muffled.
VCA Modulation by PRESSURE
Pressure can also be applied to either one of the VC As to obtain a change in the
Patch's loudness. Try using PRESSRXo modulate VCA 1, setting VCA 1's initial
amount to about 40. Or, as with Velocity, apply Pressure to the AMP of the
Envelope (in most cases ENV 2) that is controlling VCA 2. In this instance, set the
initial amount of the Envelope's Amplitude to around 35. If a much lower amount
is used, Pressure will have to be used all the time just to hear the Patch.
VALUE X range: -63 to +63. A setting of 0 means that keyboard PRESSR has
no effect. Using a positive Value causes PRESSR \o "open" the VCA and thus
adds more loudness to the sound. Using a negative Value "closes" the VCA from
its initial amount and causes the sound to decrease in loudness.
LFO Amount Modulation by PRESSURE
The initial amount of the LFOs can be increased or decreased by modulating it by
Keyboard PRESSR - pressing into the M ATRIX-12's keys after notes are
played will add LFO modulation similar to Vibrato but with a potentially wider range.
In this application, PRESSR is used to modulate the AMP of an LFO. Just
remember to set the initial AMP amount of the LFO to 0. Then apply the LFO to
the FREQ of VC01, VCO 2 or both and start with an amount of about +50. This
is yet another example of dual-level Matrix Modulation: Pressure is modulating an
LFO which is modulating one or both of the VCOs.
VALUE X range is from-63 to +63 of Pressure affecting the LFO AMP. Using
positive VALUE X numbers increase the LFO amount when Pressure is added.
Negative amounts decrease LFO modulation when the its initial amount is set to a
high value and Pressure is added. 0 setting represents no effect by PRESSR.
Matrix-12 Owner's Manual 149