I am using Audacity to annotate a large amount of data. I need to go trough each track and add labels on intervals of interest. The labels are generally composed by the track’s name and a code: e.g., “track1_C00”.
I found this thread (https://forum.audacityteam.org/t/labeling-a-label-track-from-its-name/54261/1) where a user is trying to add a label at the start of a track, and I learned that it is possible to add widgets (https://audionyq.com/nyquist-programming-variables-and-data-types/) from which to select a series of option.
Can anyone help me write a NYQUIST macro that takes the track name, opens a widget with all my codes (n = 9), and then concatenates both into a label at selection?
I know this is something I should figure out by myself but I would deeply appreciate some guidance.
Something like this?
;type tool analyze
;name "Add Custom Label"
;control code "Select code" choice "C01,C02,C03,C04,C05,C06,C07,C08,C09" 0
(defun getcode (id)
(format nil "_C0~a" (+ id 1)))
(let ((txt (get '*track* 'name))
(start (get '*selection* 'start))
(end (get '*selection* 'end)))
(setf txt (strcat txt (getcode code)))
(list (list 0 (- end start) txt)))
Exactly! Thank you so much.
Just one detail: Is there a way to have it add the label to the same label track? Every-time I create a new label it also creates a new track (screenshot attached).
To do that you need to make the selection on the audio track and the label track.
Make the selection on the audio track first, then “Shift + Click” the “Select” button on the left end of the label track.
(Alternatively, if the audio track and the label track are next to each other, you can click + drag the selection across both tracks).
That would take a lot of time because I would have to scroll down. However, when I export the labels (even when there are multiple tracks), Audacity creates a single .txt with all of them, which is exactly what I wanted. So it still works exactly as I needed even with multiple label tracks.
Thank you for your time. You just saved me many of hours of work.
If you have lots to do, then there’s a workaround, but probably not worth the effort if you can manage with the plug-in as is.
The workaround is to create another plug-in, using this code (additional headers are required to make it a full plug-in):
(defun first-label-track-id ()
(let ((tracks (aud-get-info "tracks"))
(dolist (track tracks nil)
(when (member '(KIND "label") track :test 'equal)
The above code looks for the first label track and adds it to the current selection.
Then create a (normal) Macro with the two plug-ins. (add the label track to the selection, then create the label).
Finally, make a keyboard shortcut to run the macro (See: https://manual.audacityteam.org/man/keyboard_preferences.html)
(Unfortunately it is not possible to combine both bits of code in a single Nyquist plug-in because changing the selection can only be done as a “Tools” type plug-in, and returning labels requires an “analyze” (or “tools analyze”) type plug-in.