Akai MPC 60 Operator's Manual Page 216

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Chapter 11: MIDI Functions
Page 210
The Sequencer Input Filter section:
• The Event and Pass event? fields:
The Event field is a choice field and can be set to any one of the
following event types:
NOTES
PROGRAM CHANGE
PITCH BEND
CHANNEL PRESSURE
POLY PRESSURE
SYSTEM EXCLUSIVE
MIXER VOLUME
MIXER PAN
OUTPUT/EFFECT LEVEL
C0-BANK SELECT MSB
C1-MODULATION WHEEL
C2-BREATH CONT
.
.
.
C127-POLY MODE ON
TUNE REQUEST
While one of these event types is selected, the Pass event? field
displays either YES, indicating that the event will be recorded into
sequences, or NO, indicating that the event type will be removed from
the MIDI input data stream when encountered. To change the status of a
particular event, first select the event in the Event field, then set the Pass
event? field to the desired status—YES or NO.
COMMENT: An example of a good use of this function is to
prevent channel pressure data from being recorded into your
tracks. If you are using a keyboard that produces channel
pressure messages, all of these continuous messages will
normally be recorded into the track, whether your synthesizer
uses them or not. This will cause a lot of extra sequence
memory to be used and will cause the sequencer to work much
harder to play all of these messages, possibly causing note
delays. To avoid this, turn off the recording of continuous
controller messages unless your synthesizer is using them. To
do this, select CHANNEL PRESSURE in the Event field, then
select NO in the Pass event? field.
• The Min change field:
This field only appears if the Event field is set to PITCH, CHANNEL
PRESSURE, STEREO VOLUME, STEREO PAN, OUTPUT/EFFECT
LEVEL, or controllers 0 through 31. These are all continuous controller
event types, meaning that large numbers of these individual events are
used to simulate a gradual change in the specified parameter. For
example, when you move a pitch bend wheel on a keyboard, a large
number of pitch bend events are output from the keyboard, and all of
them are recorded into the active track. The problem with recording all of
these events is that they use a large amount of memory and they cause
the internal computer to work very hard, possibly causing timing delays if
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