automatically addding spaces between clippings

Hello:

I have a bunch of files, each one consists of short sound clippings (verb conjugations). I want the silence parts between the clippings be exactly .75 seconds. How do I do it automatically?,

Many thanks,

Eugene

If there is already silence* ≥ 0.75 seconds, truncate silence to 0.75 seconds.

To batch process many files in the same way use Audacity macro.

[ * silence is any sound below a user-defined threshold, not necessarily zero flatline ]

Many thanks!