User Manual

Chapter 31: Beat Detective 643
To generate Bar|Beat Markers with Beat
Detective in a session with tick-based tracks:
1 In the Edit window, make an audio or MIDI se-
lection.
2 In the Beat Detective window, select Bar|Beat
Marker Generation.
3 Define or capture the selection as described
in“Defining a Beat Detective Selection” on
page 638.
4 Set the Resolution to Bars or Beats.
5 Click Generate.
6 Do one of the following:
• In the Realign Session dialog, choose Pre-
serve Tick Position if you want to let the
tick-based material shift in absolute time.
– or –
• Choose Preserve Sample Position if you
want to have the tick-based material main-
tain its absolute position. This option can
be useful when adding a meter and tempo
map to a freely played performance.
7 Click OK.
Tips for Getting Useful Beat
Triggers
Use the following tips to verify beat triggers:
 To focus on a particular area in the selection,
unlink the Timeline and Edit Selections and set
the playback range by clicking or dragging in
any Timebase ruler.
 Check the thickness of the beat triggers to see
if they align properly with the audio material.
Thick triggers fall on barlines, medium triggers
fall on beats, and thin triggers fall on sub-beats.
 Select the option for Show Trigger Time and see
if the (assumed) metric locations of the triggers
align with the material. A false trigger should be
moved or deleted because it can cause subse-
quent triggers to appear in the wrong locations
(see “Editing Beat Triggers” on page 644).
 Consider whether lengthy selections should
first be broken down into smaller selections,
which could be more easily managed. For exam-
ple, working in 8- or 4-bar sections might yield
better results more quickly.
 Beat triggers are preserved when switching be-
tween audio and MIDI modes. This allows using
MIDI triggers for editing audio, or collecting
triggers from combinations of MIDI and audio
tracks.
 For selections across multiple tracks, consider
whether it may be easier to work with them in-
dividually, or in Collection mode. See “Detec-
tion (Normal) and Collection Mode” on
page 655.