Varispeed - Akai DD1500 User Manual

VARISPEED

Although it is possible to use SPOOL to play back a project at different speeds, you may
wish to varispeed just one cue or region. This can be achieved using the VARISPEED
function. Unlike TIMESTRETCH which makes a recording longer without changing pitch or
PITCH SHIFT which will transpose a recording's pitch but keep the length the same,
VARISPEED makes the recording longer and lower in pitch or shorter and higher in pitch.
Selecting VARI in the main DSP select page will give this screen:
Operation is the same as TIMESTRETCH. You mark an IN and an OUT point to mark the
region you want to varispeed (or use SELECT CUE to select an entire cue) and you use
the VARISPEED AMOUNT parameter to set the amount by which the selected region/cue
will be affected (the range is 50% to 200%).
NOTE: Please note that although the process seems to be identical to timestretch, the
VARISPEED AMOUNT percentage has a different effect on the processed cue. With
timestretch, a value of 110.00% will make the new cue LONGER but, with varispeed, the
same value will make the new cue SHORTER (and higher in pitch).
Because the processed version will be longer or shorter in length, the same LOCK TO and
SLIP TYPE fields that we saw in TIMESTRETCH are provided. LOCK to allows you to
select SOURCE IN or SOURCE OUT. Depending on your selection, the results would be
something like this:
The SLIP TYPE parameter selects whether cues before/after the processed cue will move
in time or not:
ORIGINAL
VARISPEED = 150%
VARISPEED = 150%
Version 2.00 - March, 1996
IN OUT
ORIGINAL
VARISPEED = 150%
LOCK TO IN
LOCK TO = SOURCE IN
LOCK TO = SOURCE OUT
UTILITIES - DSP FUNCTIONS - 20
IN
ORIGINAL
VARISPEED = 150%
LOCK TO OUT
ORIGINAL TRACK
SLIP WHOLE TRACK
SLIP ONLY CUE
ORIGINAL ORIGINAL TRACK
VARISPEED = 150% SLIP WHOLE TRACK
VARISPEED = 150% SLIP ONLY CUE
OUT
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