Accumulator Events
All the events looked at so far have had one thing in common – their effects only apply to the
individual steps that they are enabled on.
The “Accumulator ” event group provides another set of events which can alter pattern values, but
they do so in a way that continues to affect the pattern even once it moves on to other steps.
These events are able to make lasting changes to the way a pattern plays because they give you access
to some hidden values that affect pattern playback.
These hidden values are the accumulators.
What Is An Accumulator?
According to the dictionary, an accumulator is simply something that accumulates – that is, it
increases gradually in quantity or number.
In the ways that the accumulators are typically used in P3, this is exactly what they do.
There are three accumulators for each track:
• note accumulator
• velocity accumulator
• aux D accumulator
What they do is very simple.
The three accumulators are each named for one of the pattern values – note, velocity or aux D.
Whenever the note and velocity values are used to send a MIDI note:
• the number held in the note accumulator is added to the note value
• the number held in the velocity accumulator is added to the velocity value
So you can really think of the note accumulator as just another transpose setting – with the same effect
as part transpose (PXPos) or a playlist step transpose.
The velocity accumulator is similarly just a “transpose”, or a numerical offset, for the velocity.
When the aux D value is used to send a MIDI controller, or if aux D is used for an aux event:
• the number held in the aux D accumulator is added to the aux D value
Like the other accumulators, it’s just a numerical offset that applies to the aux D value.
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