Split A audio to

I need to reate label per 1 second
Example: label 1 from 00:00 to 00:01
label 2 from 00:01 to 00:02


Or simply split the audio file to 200, 300 smaller file has a same length (file audio length 1m40 become 100 file audio length 1m)

I need to reate label per 1 second
Example:
label 1 from 00:00 to 00:01
label 2 from 00:01 to 00:02


Or simply split the audio file to 200, 300 smaller file has a same length (file audio length 1m40 become 100 file audio length 1m)

Tools > Regular interval labels
would be what you’re looking for

See “Regular Interval Labels”: https://manual.audacityteam.org/man/regular_interval_labels.html