Midi Clock - Akai MPC 60 Operator's Manual

6. MIDI CLOCK:

This is the same as "MIDI CLOCK W/SONG PNTR° above,
except that the "Song position pointer" signals are ignored. This
setting would be rarely used.
7. 1/4 NOTE CLICKS:
In the event that no sync signal exists on tape, this feature allows
the MPC60 to sync to standard 1/4 note metronome clicks. To
smooth out any variations in tempo, the playback is averaged over
time. It is possible for the MPC60 to follow slight tempo changes,
but larger changes will cause it to temporarily lag behind or lead. It
is possible to use any clean signal instead of metronome clicks, but
the signal used must be very distinct and short, such as a cowbell or
closed hihat, and there must be a minimum of background noise.
Adjusting the sync input level control will help to minimize
triggering from background noise. Since 1/4 note clicks contain no
position information, the first click received will cause the MPC60
to immediately start playing from the start of the sequence.
However, it is also possible to set the MPC60 so that the first click
received starts the sequence from a predetermined bar number.
This is described in the description of the 1/4 CLICKS START AT
field.
There is an eighth setting, OFF, which disables all syncing to external
sources.
• The SEQUENCE STARTS AT SMPTE# field (appears in SMPTE and
MIDI TIME CODE modes only): This field is used to set the incoming
SMPTE time number which must be received in order for bar 1 of the
sequence to start playing. Once the MPC60 knows which incoming SMPTE
number plays bar 1, it will automatically calculate the proper point within
the sequence to start playing when higher SMPTE numbers are received,
and it will know not to play anything if a SMPTE number is received which
is before or after the song. This field has five parts, separated by colons
(":"). The parts are:
HOURS:MINUTES:SECONDS:FRAMES.SUBFRAMES
"Frames" are the individual film or video frames. Depending on which of
the four types of SMPTE code is being received, there are either 24, 25 or
30 frames per second. "Subframes" are subdivisions of 1/100 frame, used
for very fine adjustment. At 30 frames per second, each subframe is equal
to 1/3 of one millisecond.
NOTE: This setting applies only to the active sequence - if you change
the active sequence and return to this screen, the newly selected
sequence's SMPTE start number will now appear in this
Section 8: Syncing to tape and other devices
181