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Connecting External Devices — Step up with MIDI
Please read this section if you are planning to use the
HP 145's MIDI functions, connecting it to another
MIDI device.
When connected to one of Roland's MT Series devices
or other such instrument, you can play the many MT
Series internal tones with the HP 145's keyboard, as
well as record the performances.
About MIDI
MIDI, short for "Musical Instrument Digital Interface,"
was developed as a standard for the exchange of per-
formance data between electronic instruments and
computers.
The HP 145 is equipped with MIDI connectors to allow
such exchange of performance data with external
equipment and devices. Connecting the keyboard to
other devices with these jacks provides you with an
even greater variety of ways to use your keyboard.
MIDI__-__ —
Out
In
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MID! Connectors on the rear panel
MIDI Out Connector
Performance information such as the output from the
keyboard or pedal is sent out here to the MIDI connec-
tors of external equipments.
MIDI in Connector
MIDI messages sent from connected external equip-
ment are input here, then HP 145 can output sounds,
exchange tones, and perform other operations.
Sending and Receiving Program
Change Messages
When you press the HP 145's [Piano] button or [Tone]
button to change tones, a Program Change Message
with the corresponding Program Number is sent via
the MIDI Out connector. Furthermore, a Program
Change Message received via the MIDI In connector
changes the tone to the one with the corresponding
Program Number.
Switching Tones with Program Change
Messages
Here, with the HP 145 connected to an external MIDI
sequencer, when recording and playing back songs, if
after pressing the sequencer's Record button to start
you press the HP 145's [Tone] button and then begin
to play, a Program Change message for that tone is
recorded by the sequencer. When you then play back
using the sequencer, regardless of the HP 145's mode,
the tone is changed in accordance with the Program
Change messages recorded by the sequencer, allowing
you to play back with the tones used during record-
ing.
In addition, Program Change messages from tone
changes made while the recording is in progress are
also recorded, meaning you can also record songs with
tone changes made during the performance.
Program Numbers for each of the HP 145's tones are
shown below.
Program Number
Tone
1
Piano
4
Harpsichord
6
Electric Piano
9
Strings
1
Piano + Harpsichord
13
Piano + Electric Piano
16
Piano + Strings
24
Harpsichord + Electric Piano
27
Harpsichord + Strings
34
Electric Piano + Strings
* Any Program Number other than those listed above that
are received by the HP 145 are ignored.
* 71-34 are in Dual Play mode.
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