Apply Chain ?

Hi all. I have a question and hope you guys can shed some light here. On Audacity under file menu there is a function called Apply Chain. What exactly does this Apply Chain do? just need further explanation about this. Cuz when I click on it it gives me another box that gives me 2 function clean speech or mp3 conversion ?

The CleanSpeech feature has been retired. It was a “legacy” feature from the old 1.3.x series of Audacity (now obsolete). It is no longer included or supported, so I’m guessing that you are using an old version of Audacity? The current version is 2.0.3 and it is available here:

You can find a full description of “Chains” in the manual. See these two links:

The manual is also included in the recommended “installer” version of Audacity 2.0.3. You can find it in the Help menu.

Ok, Thanks for clearing that up for me.