Settings Glossary
10
String Envelope Mapping
String Envelope Mapping changes how String Envelope data from String Envelope
Send is sent through MIDI. Jamstik settings programs will have some preset values to
choose from for mapping and you can also type most MIDI CC numbers in the input
box in Jamstik Creator to assign String Envelope to other values as well.
Default values and use cases:
CC11: Expression - CC11 Expression is a control that has traditionally been
triggered in MIDI systems by an expression pedal and is often mapped to
various modulations/effects/volume.
By default, the Jamstik Creator looks for CC11: Expression for a variety of
default presets that use the Oscillator's "Expression Volume Mod" control
under Envelopes.
Channel Pressure - Channel Pressure or the MPE z-axis, is used similarly to a
traditional aftertouch control in MIDI, where a midi note changes modula-
tions/effects/volume based on how hard a user presses down on a note
after the initial strike.
In the case of the Jamstik, since this is mapped to the string envelope, the
value will always decrease over time rather than increase as it would with a
harder push on other MPE controllers. Often this will create desired effects
but rarely this will not work as intended and you may want to turn off or
reassign String Envelope for certain third-party MPE patches.
CC7: Volume - CC7 is generally used for volume and in many third-party
software/hardware synthesizers will change the overall volume of a sound
being played.
While this will work for many third-party synthesizers, some will map this to
master volume in a way that will make messages from multiple strings
contradict with each other and cause rapid fluctuations in volume as volume
messages from multiple strings are being read at once.
CC71: Sound Control 2 - CC71 Sound Control 2 is a value that is used in
some MIDI synthesizers for resonance. This and the surrounding Sound
Control values (70 - 79) may already be mapped to interesting values in your
synthesizer and may produce favorable results with the Jamstik.
Octaves / Octave Transpose
This control will pitch shift the MIDI output up or down octaves (12 semitones) based
on the positive or negative value. Transposing the octave down may be helpful for
playing bass synthesizers while keeping standard guitar tuning.
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