20
MIDI
What is MIDI?
MIDI (Musical Instrument Digital Interface) is a world-wide standard
for exchanging performance-related data between electronic musical
instruments and computers.
You can use the HT-70 to play other MIDI-equipped instruments. When
you do so, your sound selections and damper pedal operations etc. will
also be transmitted as control data.
You can also use another MIDI keyboard or sequencer (automatic play-
back device) to control the HT-70 and play its internal tone generator. By
combining multiple MIDI instruments you can enjoy creating more
sophisticated ensembles. You can also save the HT-70’s recorder data on
an external storage device via MIDI.
This section explains the MIDI-related operations and functions of the
HT-70. If you would like to learn more about MIDI, please consult one of
the many available introductory books on this subject.
Making MIDI connections
Commercially available MIDI cables are used to transfer MIDI data.
Connect these cables from the MIDI connectors of the HT-70 to the MIDI
connectors of the external MIDI device with which you want to
exchange data. There are two types of MIDI connector.
MIDI IN connector
This connector receives MIDI messages.
The MIDI IN connector lets you play the HT-70’s sounds from an exter-
nal MIDI device (e.g., MIDI keyboard or sequencer). Use a MIDI cable to
connect the HT-70’s MIDI IN connector to your external MIDI device’s
MIDI OUT connector.
MIDI OUT connector
This connector transmits MIDI messages.
The MIDI OUT connector lets you control an external MIDI device using
the MIDI messages transmitted from the HT-70. Use a MIDI cable to con-
nect the HT-70’s MIDI OUT connector to your external MIDI device’s
MIDI IN connector.
MIDI channels
When you’ve finished making connections, set the HT-70 to the same
MIDI channel as the MIDI device to which you’ve connected it. There
are sixteen MIDI channels, numbered 1–16.
The channel setting returns to “C01” when the power is turned on.
1. Hold down [
FUNC.
] for about one second.
The switch’s LED begins flashing.
2. Press [DISPLAY] several times, until “Ch” appears on the multidis-
play.
When you release the switch, the multidisplay shows the current set-
ting. (The factory setting is C01).
3. Press [▲] or [▼] as necessary to change the setting.
4. Press [FUNC.] to complete the setting.
The setting is stored and the [FUNC.] LED goes dark.
The HT-70 can record MIDI data coming in over the selected MIDI chan-
nel.
Using the HT-70 as a multi-timbral
sound module
When you turn on the power of the HT-70, its internal sound generator
is operating as a 16-part multi-timbral sound module that can be played
from an external MIDI device.
1. Use a MIDI cable to connect the HT-70’s MIDI IN to the MIDI OUT of
your sequencer or similar device.
2. Receive MIDI messages from the connected sequencer etc.
For details on how to transmit data from the sequencer you’ve con-
nected, refer to the owner’s manual for the equipment you’re using.
If the HT-70 is receiving program change messages together with perfor-
mance data, it will change the sound (timbre) to accord with incoming
program numbers as the performance proceeds. Note that this can occur
only if the program change filter is off for the relevant MIDI channel.
Note, however, that the selected MIDI channel (☞p.20) ignores program
changes.
Filtering resets to OFF when the HT-70 power is turned on.
1. Hold down [FUNC.] for about one second.
The switch’s LED begins flashing.
2. Press [DISPLAY] several times, until “16t” appears on the multidis-
play.
When you release the switch, the multidisplay shows the current set-
ting. (The factory setting is on).
3. Press [▲] or [▼] as necessary to change the setting.
4. Press [FUNC.] to complete the setting.
The setting is stored and the [FUNC.] LED goes dark.
The sound selector cannot be used to change sounds while the HT-
70 is playing externally supplied MIDI data. But note that it is pos-
sible for the selected MIDI channel (☞p.20).
Local on/off setting
You should turn the HT-70’s Local setting “off” if you want the keyboard
of the acoustic piano to which the HT-70 to play only an external MIDI-
connected sound module and not the HT-70’s internal sound generator,
or to prevent duplicate notes from sounding when you’ve connected the
HT-70 to a sequencer that echoes-back (re-transmits) the incoming data
back to the HT-70.
Normally you will leave the HT-70’s Local setting “on” so that it will
produce sound when you play the keyboard.
Immediately after the power is turned on, the Local setting will
automatically be turned on.
1. Hold down [FUNC.] for about one second.
The switch’s LED begins flashing.
2. Press [DISPLAY] several times, until “L.ct” appears on the multidis-
play.
When you release the switch, the multidisplay shows the current set-
ting. (The factory setting is on).
3. Press [▲] or [▼] as necessary to change the setting.
4. Press [FUNC.] to complete the setting.
The setting is stored and the [FUNC.] LED goes dark.
Display C01 ... C16
Channel 1 ... 16
Display on oFF
Multi timbra on off
Display on oFF
Local on off
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