Topic: looking for help with distorted audio recording

[Iku]

Hi, I'm newbie here looking for advise. Last year I recorded rock concert, but since my recorder failed I was able to record only with a spare one which was my smartphone, so the recording is in wave format but mono. But a problem is, it is heavy distorted. I wonder if it is any way to make it better. Here is one song:
https://mega.nz/file/tUNSBbAK#MQYhSpo0SXPvtSlpJHgwr35y3tDeCfBscv92pRUI45g

Also when you record using microphones with foam your sound is... How do you call it: hollow, flat or ??

Thank you in advance

[loughney]

I use SoundForge Audio Cleaning Lab to remove clicks and crackling.I check to see if stereo widening helps to move the distortion to a place less noticible.  I then open the file in SOundForge Audio Studio and use a EQ and determine what frequencies are doing the most & least distortion, and adjust.  Sometimes some frequencies can help cover up some distiortion.  You could use your favorite audio tool, Audacity is pretty good and free.