Sync Recording - Yamaha MT8X Operation Manual

SYNC RECORDING

Normally, to dub over a previously-recorded segment you play a new part along with the previous recording, matching
the tempo of it. There is no problem with this method to overdub something like a vocal or guitar part, but a different
technique is required with MIDI instruments (such as synthesizers and rhythm machines).
To overdub with MIDI instruments, it is necessary to supply a "SYNC signal" which is the same information as the
tempo of the previously-recorded part with a format that can be decoded by the MIDI instrument.
The technique to overdub with MIDI instruments using the SYNC signal is the "SYNC recording".
The following two units of equipment are needed in order to carry out SYNC recording on this unit:
MIDI instrument: Any equipment that inputs and/or outputs SYNC signals which contain the data of "tempo", such as
a music sequencer or a rhythm machine.
SYNC signals output from MIDI instruments have an extremely high frequency and cannot be
MIDI converter:
used for recording without being converted to signals called FSK (Frequency Shift Keying).
A MIDI converter such as the YAMAHA YMC 10 can be used for this type of signal conversion.
Some MIDI instruments can output the FSK signals, in which case an external MIDI converter is
not necessary. Please read the instruction manual provided with your MIDI instrument to see if it
outputs the FSK signals.
Recording FSK Signals
1 . Connections
(Fig. 1) When using a MIDI instrument
which cannot output FSK
signals
Record FSK signals on track 8.
This instrument is equipped with the dbx noise reduction system. Leaving the dbx system on, however, can interfere
with the recording of FSK signals or cause other problems, and may also interfere with synchronization.
This instrument is designed so that, when the SYNC switch is pressed to be turned on, the dbx function is turned off
for track 8 only. Therefore, if performing SYNC recording with the dbx function left on, record the Audio signals on
tracks 1 to 7, and the FSK signals on track 8.
If the dbx switch is turned off, the FSK signals can be recorded on any track.
(Fig. 2) When using a MIDI instrument
which can output FSK signals
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