Remove crackle from voice

I’m running Audacity 2.2.2 on Windows 7 Professional. I need to remove a static/crackle sound from a voice recording, but the crackle happens ONLY when someone speaks. So Noise Reduction isn’t helping because a couple seconds of background noise don’t give audacity the sound that needs removal.

Is there a way to get this crackle from the voices?

If you zoom-in you’ll see small sections have been chopped out: it’s a jigsaw with pieces missing.

The original has it too.

Not fixable even with paid-for software as there are bits of audio missing …