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About MIDI
Appendices
How the Internal Sequencer
Operates
A sequencer is an electronic instrument used for recording
and playback of performances. The HPD-15 features such a
sequencer function. The HPD-15 comes with built-in
performance patterns (Preset patterns) which can be used for
drum practice and other purposes. You can also create your
own patterns.
fig.7-27.e
For playback, the performance data that has been recorded to
the sequencer is sent to the sound generator, which produces
the sound. The data for each of the sequencer’s parts causes
the corresponding part in the internal sound generator to be
played. When performance data is recorded, the
performance data from pads and MIDI keyboards is sent to
the sequencer; the data recorded here is then sent to the
sound module for playback.
Percussion Part 1
Percussion Part 2
Melody Part 1
Melody Part 2
Internal sequencer
HPD-15
Internal sound generator
External sound module
Pad
MIDI keyboard