Extra Menu: Scriptables I
The Select Time, Select Frequencies and Select Tracks options all are used to select audio. There is also a Select dialog that combines all three.
- Start Time and End Time are times.
- Normally they are times in seconds as shown by the ruler.
- However setting Relative To to a value other than 'Project Start' will give other behaviour.
|Project Start||Start and end times are both relative to the ruler, starting at 0.|
|Project||Start time is relative to the ruler time 0. End time is relative to the end of the project.|
|Project End||Both times are relative to the end of the project and are measured right to left.|
|Selection Start||Start and end times are both relative to the start of the selection.|
|Selection||Start time is relative to the start of the selection. End time is relative to the end of the selection.|
|Selection End||Both times are relative to the end of the selection and are measured right to left.|
- High and Low are for spectral selection.
- They select a frequency range which is relevant in certain effects.
- First Track is the number of the first track, starting at 0.
- Track Count is the number of tracks. The default is 1.
- You can set Track Count to 0 to select no tracks (there can still be a time selection in that case).
- Very occasionally useful, First Track and Track Count can both use fractional values, like 0.5, which can be used to select a channel of a stereo track.
- One use of selecting a channel rather than a whole track, is in a script to resize the two channels of a stereo track to different heights.
- The Mode parameter allows arbitrary track selections, e.g adding or removing tracks from the current track selection.
Set Track <Something>
The Set Track Status, Set Track Audio and Set Track Visuals dialogs all set properties of the currently selected tracks. There is also a compound version of the dialog that combines all three.
Set Track Status
Set Track Audio
Set Track Visuals
Sets properties for a track or channel (or both). Setting one channel of a stereo track can lead to interesting results. That's most used when setting relative sizing of the two channels.
SpectralPrefs=1 sets the track to use general preferences, SpectralPrefs=0 per track prefs. When using general preferences, SetPreference can be used to change a preference and so affect display of the track.
Name is used to set the name. It is not used in choosing the track.
Gets a single preference setting.
Sets a single preference setting. Some settings such as changing the theme require a reload (use Reload=1), but reload takes time and slows down a script.
Modify a clip by stating the track or channel and a time within it.
Color and start position can be set.
Try to avoid overlapping clips, as Audacity will allow it, but does not like them.
Modify an envelope by specifying a track or channel and a time within it.
You cannot yet delete individual envelope points, but can delete envelopes (that contain the chosen time) using Delete=1.
Modifies an existing label. You must give it the label number.
Sets the project window to a particular location and size. Also sets the Project Rate. Can also change the caption - but that is cosmetic and may be overwritten again later by Audacity.