User Manual

TEMPOS AND AUDIO
655
Tempo Events
Tempo events are shown superimposed over the
audio waveform. Their location is measured by the
time line ruler above. Their vertical position
indicates the value of the tempo event, as measured
by the BPM (beats per minute) ruler on the left.
The exact tempo is shown on the tempo event.
Editing Tempos in the Tempo Edit Strip
Because tempo editing is so closely tied in with the
time ruler, tempo editing is done in the tempo edit
strip (Figure 52-8) just below the ruler. Each tempo
has a circular tempo handle (Figure 52-8). Use the
tempo handles to edit tempos as follows:
You can use the snap-to-grid and snap-to-beat
check boxes to constrain your tempo edits, if
desired. Snapping to beats can be particularly
useful for quickly adjusting the tempo map to
match beats and tempo of the audio.
TEMPO MENU
The Tempo menu in the Waveform Editor
(Figure 52-8) is activated by selecting the Tempo
edit layer. The Tempo menu contains the same
commands as found in “Audio menu > Soundbite
Tempo” on page 650 (and subsequent pages),
except for the additional commands noted below.
Analyze Soundbite Tempo
The Analyze Soundbite Tempo command engages
Digital Performer’s automatic tempo analysis
features to generate a tempo map for a soundbite.
This can be applied to any audio that has been
beat-analyzed by Digital Performer’s Beat
Detection Engine; ensuring the audio file’s beats
are optimal before choosing this command can
improve results. See “Editing beats to improve
tempo detection” on page 671.
Set/Clear Soundbite Tempo
See “Set Soundbite Tempo” on page 651 and “Clear
Soundbite Tempo” on page 652.
Clear Tempos in Selection
To use this command, select a portion of the
waveform. Tempos within the selection are
removed and anchor tempos are inserted, if
necessary, at the boundaries of the selection to
maintain the tempos before and after the selection.
To do this: Do this:
To move a tempo event Drag its handle. The tempo events
immediately preceding and following
the one you drag serve as anchor
points, constraining (“rubber-band-
ing”) the results between them.
To move a tempo event
and adjust all subse-
quent tempo events
Hold down the Control/Win key
while dragging the tempo handle. The
tempo event immediately preceding
the one you drag serves as an anchor
point, but all subsequent events move
with the one you are dragging.
To insert a tempo event Click in the tempo edit strip with the
arrow cursor
To delete a tempo event Click its handle with the Mute tool.