Re: What is the difference between speech volume l… – Adobe Support Community

I don’t know where you got the idea from that they’re doing the same thing, because they most certainly aren’t!

The speech volume leveler takes a single file of speech, and alters its dynamics according to the parameters you set – so you can set the target volume for it, and how much you level it by, and you can set the dynamic range. It does this for speech, quite specifically.

Match loudness does something different, though. It takes any number of files, and matches them to a preset target loudness – but only by altering the volume of the file and in some cases, peak limiting it – it doesn’t touch the dynamics of the body of the file at all.