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Page 268 CD3000XL OperatorÕs Manual
EDITING A TAKE FOR SYNCHRONISED PLAYBACK
When you make a recording that needs to be synchronised to other audio material (such as
sequenced programs, etc.), providing you make the recording referenced to the other audio,
there should be no need to worry about synchronisation and the CD3000XL will follow exactly.
There may be instances, however, where some adjustments need to be made and this can be
done in the following ways.
1 If the selection is , you may adjust the DELAY parameter in millisecond
steps to achieve accurate playback start times.
2 If the selection is , you may shift the note or track within your
sequencer.
3 Whatever the selection is, you may use the EDIT page to trim a take for better
playback start synchronisation.
4 If the take ‘wanders’ during playback, this will be because the external reference’s clock is
not stable. For example, if you record a take referenced to an external sequencer playing
programs in the CD3000XL but, after recording has been done, the take wanders out of
sync after a few minutes, it is most likely that the sequencers clock is not entirely accurate
and so, eventually, the two will drift apart. In this case, use the parameter to
adjust the takes playback speed by minute amounts. Unfortunately, there are no
guidelines on setting this up. You will have to make an adjustment, see if it improves - if it
does not, you will have to try again with a new value. All being well, however, this is only
likely to occur if you use a different sequencer to that which was used during the record
process.
NOTES ABOUT SYNCHRONISING TO EXTERNAL AUDIO
In most cases, there should be no problems in synchronising takes to external audio material
because the playback response time of the CD3000XL is extremely fast and sync accuracy is in
the region of a few milliseconds. Also, the take editing and parameter adjustments described
above should overcome any discrepancies you may encounter.
You will note, however, especially when running takes alongside sequenced material that if
you change the tempo of the sequence, the takes will be completely out of sync, even if the
tempo change is very small. Of course, you can use the VARISPEED control to bring them
back in sync but then, of course, they will be out of tune with each other unless you transpose
or re-tune all the sequenced material. Be sure to only make recordings once you have finally
settled on the tempo of your sequencer.
Similar considerations must be borne in mind when syncing takes to other audio material such
as material off tape. If you use varispeed on the tape machine, you will have to set a suitable
varispeed setting on the CD3000XL to accommodate this. Another consideration is that tape
transports are rarely 100% stable so if you are running a sequencer synchronised to code on
tape and also running takes from the CD3000XL’s disk, you may find that takes will wander
slightly out of sync, especially if that are long recordings.