How to remove clipping sound and make the audio sound better?

[keychain]

Hi,

I have a recording of about 30 minutes where the audio sounds like this: http://vocaroo.com/i/s0tmAaCwwCg1 (sample audio)
Is there a way to make the audio/voice clearer to its best so that it sounds better?

Thanks

 

[sdifox]

Try Audacity.

https://www.google.ca/amp/lifehacker.com/5732531/use-free-software-to-clean-up-noisy-audio-files/amp