Peavey DPM V3 Owner's Manual page 88

the sound generator will play middle C, regardless of the manufacturer. However, note
that not all instruments implement all aspects of the MIDI specification.
Example: Not all instruments send or receive keyboard pressure data.
Each of MIDI's 16 available channels can carry a unique set of MIDI data. Since all
this data travels over one cable, each piece of data includes its appropriate channel
ID so that MIDI receivers can "tune in" to a particular channel and accept only that
data. The DPM V3's Multi mode allows different sounds to be tuned to different chan-
nels for this purpose.
A keyboard transmitting over channel 2 will stamp all its data as belonging to channel
2. This is particularly helpful when sequencing, since each recorded "track" can be
assigned to a unique MIDI channel, and the associated pieces of gear can tune in to
a particular track. Example: If track 1 (set to MIDI channel 1) carries bass and track 2
(set to MIDI channel 2) contains drum data, you would tune a bass sound generator to
receive the data on track 1 and the dfum machine to receive the data on track 2.
7.4 MIDI MESSAGE BASICS
The are two main types of MIDI messages. Channel messages, which are channel-
specific, consist of Voice and Mode messages. System messages, which do not have
a channel number and are received by all units in a system, include Common, Real
Time, and Exclusive messages.
7.5 CHANNEL MESSAGES
7.5a Voice messages
A synthesizer's voice is the most basic unit of sound generation. Usually, each voice
plays one note at a time (although a DPM V3 voice can consist of two oscillators), so
the number of notes you can play at one time will be limited by the available number
of voices. MIDI messages that affect voices include:
Note On Corresponds to a key being pressed down; values range from 000 (lowest
note) to 127 (highest note). Middle C is 60.
Note Off Corresponds to a key being released; values are the same as note on.
Velocity Corresponds to dynamics; values range from 001 (minimum velocity) to 127
(maximum velocity). A velocity of 000 is equivalent to a note-off message.
Pressure Indicates the pressure applied to a keyboard after pressing a key; typically
used to introduce vibrato, open a filter, etc. There are two kinds of pressure. Mono (or
channel) pressure represents the average pressure of all keys held down, whereas
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