Instruction Manual

471
Changing the Timing of a Recording
Editing MIDI Events and Controllers
are very likely to end up with a recording that does not fit onto a fixed tempo
grid.
The Process-Fit Improvisation command lets you take a recording and
create a tempo map (with measure and beat boundaries) that fits what you
played. Your performance is not changed in any way, even though the note
start times and durations are adjusted to fit the new tempo map. This is
important if you later want to use any of SONAR’s editing features that
depend on a proper tempo map for best results.
To use this command, you must record a reference track containing a single
clip that matches your original track or tracks but has only a single note on
each beat boundary. You should make sure that the reference track has
one event for every single beat, with no extra beats or missing beats. The
first beat of the reference track should be at 1:01:000. You can use any
editing command to adjust the reference track.
If you want, you can use other types of events as markers on the reference
track, such as a sustain pedal. Remember, however, that MIDI sustain
pedals generate one event when the pedal is pressed and another when it
is released. So if you want to use the sustain pedal for the reference track,
keep this in mind. Click down, up, down, up, for one, two, three, four.
Remember that the better the quality of your reference track, the better job
the Fit Improvisation command can do. You want each of your reference
track events to be as close as possible to the beat of the music. Note that
some keyboards transmit aftertouch events when you record your reference
track. These extra events will prevent Process-Fit Improvisation from
working properly. Therefore, you should delete these events before using
this command, or filter them out when recording the reference track (using
Options-Global-MIDI).
To Fit Tempos to an Improvisation
1. Record the reference track.
2. Select the reference track.
3. If necessary, combine all clips in the reference track into a single clip
using the Edit-Bounce to Clip(s) command.
4. Choose Process-Fit Improvisation.
SONAR adds tempo changes as necessary to fit the tempo grid to the
reference track. When you’re done, you should mute the reference track,
since the reference track events are not rescaled.
Note: if the resulting tempo grid exceeds 250 beats per minute, you will see
an error message. If this happens, you can shorten the start times of each