Repairing a poorly recorded voice

[Guest]

Hey. I have a voice recording in very poor quality. Speech is in Polish. I use this language on a daily basis, but the recording is not so clear that I will not understand any words.
Is it possible to fix a recording so that it can be understood?
The recording is long, so the link below is just a sample.

Sample.wav - Google Drive

[SteveG_AudioMasters_ · Accepted solution]

I'm afraid that's simply not fixable. It sounds as though it's been copied several times, and the record levels have been set incorrectly. And then saved at a low bit rate...

Please don't believe all the stuff you see on CSI - it simply isn't real; you can't rescue something that is this severely distorted at all.