User manual

626
Editing tempo and signature
Tempo Detection (Cubase only)
The arrow buttons at the bottom right let you change the direction in which the
algorithm will analyze the audio material during a manual correction operation. To work
backwards, 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 627).
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 specifically for the event that you want
to analyze. To analyze another 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 detection 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
correction 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 “Multiply 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” buttons.
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 algorithm 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.
The detected tempo has jumps and spikes although it should be steady
If you get the message that the algorithm has detected irregular tempo changes, even
though you know that the material has a more or less steady tempo, you can use the
“Smooth Tempo” function.