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Editing tempo and signature
9. Locate the last beat that is in sync.
This would be the beat just before the position where the audio and
tempo drift apart.
10. Press [Shift] and click at that position to insert a tempo
event there.
This locks this matched position. The material to the left will not be affected
when you make adjustments further along.
11. Now match the tempo grid to the next (unmatched)
beat by clicking and dragging with the Time Warp tool.
The tempo event you inserted in step 10 will be adjusted.
12. Work your way through the recording this way – when
you find that the recording drifts from the tempo, repeat
steps 9 to 11 above.
Now the tempo track follows the recording and you can
add more material, rearrange the recording, etc.
Matching to hitpoints
If you have calculated hitpoints for the audio event you are
editing, these will be shown when the Time Warp tool is
selected.
• The number of hitpoints shown depends on the Hitpoint Sen-
sitivity slider setting you have made in Hitpoint mode.
• If you activate the Snap to Zero Crossing button on the tool-
bar, the Time Warp tool will snap to hitpoints when you drag
the tempo grid.
• You can use the Create Markers from Hitpoints function (on
the Hitpoints submenu of the Audio menu) to create markers
at the hitpoint positions. This can be useful when using the
Time Warp tool in the Project window, as the tool will be mag
-
netic to markers (if the Snap Type is set to Events).
Using the Time Warp tool in a MIDI editor
This is very similar to using the tool in an audio editor:
• When you use the Time Warp tool, a tempo event is automat-
ically inserted at the beginning of the edited part – this tempo
event will be adjusted when you warp the tempo grid with the
tool. Material before the edited part will not be affected.
• Only the default mode for the Time Warp tool is available. So
when you use the tool, the edited MIDI track is temporarily
switched to linear time base.
• The rulers in the MIDI editors can be set to “Time Linear” or
“Bars+Beats Linear” mode (see “The ruler” on page 378) –
the Time Warp tool requires Time Linear mode. If necessary,
the ruler mode will be switched when you select the Time
Warp tool.
• If Snap is activated on the toolbar in the MIDI editor, the tool
will snap to the start and end of MIDI notes when you drag the
tempo grid.
Typically, you would use the Time Warp tool in a MIDI
editor to match the Cubase tempo to freely recorded MIDI
material (much like the audio example above).
Tempo Detection (Cubase only)
Cubase offers a powerful tempo detection algorithm that
can be used on any rhythmic musical content, even if it
has not been recorded to a metronome click and/or con
-
tains tempo drift. This feature serves two main purposes:
• Analyzing the tempo of freely recorded audio so that
other (audio or MIDI) tracks can follow this tempo.
• Adjusting freely recorded audio to the project tempo,
which can be fixed or variable.
Audio requirements
• The audio event has to be at least 7 seconds long.
• Musical Mode has to be deactivated for the clip.
• The track has to be set to linear timebase (this happens
automatically).
• The audio material needs to have discernible beats.