User manual

474
Editing tempo and signature
The Tempo Detection Panel
The Tempo Detection Panel contains the functions for an-
alyzing the tempo of an audio event. It is opened via the
Project menu.
In the top section of the panel, the name of the selected
audio event is shown. Below the name, the Analyze button
is located. Click this button to start the tempo detection
for an event.
The middle section contains several functions for correct-
ing and fine-tuning the detected tempo curve. These func-
tions are described in the section “Correcting and fine-
tuning the detected tempo map” on page 474.
The arrow buttons at the bottom right let you change the
direction in which the algorithm will analyze the audio ma
-
terial during a manual correction operation. To work back-
wards, i. e. to reanalyze the beginning of the tempo curve,
activate the left arrow button (see
“The beginning of the
tempo curve needs to be corrected” on page 475).
With the Reset button at the bottom left you can delete
the complete analysis data and start again from scratch.
Ö Any tempo events beyond the event timeline will also
be removed upon reset.
Ö The Tempo Detection Panel has to be opened specif-
ically for the event that you want to analyze. To analyze an-
other event, close the panel, select the event, and reopen
the panel.
Detecting the basic tempo of an audio event
1. In the Project window, select the audio event that you
want to analyze.
2. On the Project menu, select “Tempo Detection…”.
The Tempo Detection Panel opens.
3. Click the Analyze button.
The following happens:
• A rough tempo map based on the beat analysis is created for
the selected audio clip.
• A tempo and a signature track are added to the project.
• The project will get a 1/4 signature, because the tempo de-
tection only calculates a tempo based on beats, regardless of
a musical signature. The signature can be modified later.
• The Time Warp Tool is selected for fine-tuning or adjusting
the newly generated tempo map.
Depending on the rhythmic quality of the source material,
the tempo analysis may directly lead to a perfect result.
However, if this is not the case, you can apply the correc
-
tion and fine-tuning functions. To find out whether such
actions are necessary, activate the metronome click and
play back the project.
Correcting and fine-tuning the detected tempo
map
If the metronome click does not match the audio perfectly,
perform any of the following operations, depending on the
situation.
The detected tempo is too fast or too slow
• To double or halve the detected tempo, use the “Multi-
ply by 2” and “Divide by 2” buttons.
• To adjust the detected tempo with a factor of 3/4 or
4/3, use the “Multiply by 4/3” and “Multiply by 3/4” but-
tons.
Examples:
• If your audio is twice as fast as the detected tempo, you can
apply the “Multiply by 2” function.
• If your audio contains dotted notes or triplets and the algo-
rithm detects 3 beats where 4 are expected, you can apply the
4/3 conversion.
• If the actual signature is 2/4 and the algorithm detected 6/8
beats or vice versa, you can apply a 3/4 conversion combined
with the “Multiply by 2” function.