User guide

Tracktion 4 Reference Manual
125
To manually adjust the loop start and end markers, drag the vertical loop marker bars (typically these
will be pale yellow lines located at either end of the audio le display) to the desired point in the audio le
(Fig. 4.7.5).
Beat points: Setting beats points helps the time stretch
algorithms accurately maintain the feel of the source
material, and produce a natural sounding time/pitch shift.
Clicking this button displays a pop-up menu (Fig. 4.7.6) with
the following tools for setting and editing beat points. You
can also manually edit these points.
•
Auto detect beat points: When this option is
selected, Tracktion will attempt to detect transients in the audio le that suggest beat points.
For each detected beat, a beat marker will be inserted. These beat markers can be moved and
deleted manually, if needed. You can also add custom beat points for ner control over the beat
markers. Auto-detected beat points will be shown as orange coloured arrows above the wave le
view. Manually moving an auto-detected beat marker will change its color to green.
•
Beat sensitivity: This control denes how large a transient is needed for Tracktion to detect a
beat. By moving the slider to the left, you are instructing Tracktion to ignore small transients. The
further you move the slider to the left, typically the fewer beat points will be found. Correspond-
ingly, moving the slider to the right makes Tracktion progressively more sensitive to transients.
•
Add beat points at each beat: When this option is selected, rather than attempting to nd tran-
sients, Tracktion will instead create beat markers at each tempo beat position. If the material is
not rhythmic in nature, this is generally the best approach to adding beat marks. Beat points cre-
ated by choosing this option will be shown as green arrows above the wave le view.
•
Clear all beat points: All currently set beat points will be cleared.
To manually adjust detected beat points, you can drag the green or orange marker arrows (Fig. 4.7.7)
left and right to set them to a new position. If you drag one downwards, the marker will be removed.
The green arrow icon above the preview level control to the right of the wave view can be dragged over
the wave to create a new maker. This allows you to ne tune the auto-detection process if desired.
Figure 4.7.5
Figure 4.7.7
Figure 4.7.6