Many third-party voice memo or call recording apps use this naming convention for active recordings.
This can sometimes bypass a corrupted header and pull the actual audio out. RecordTMP (32) m4a
If the file doesn't have a proper dot before "m4a," try renaming it to RecordTMP (32).m4a to see if your computer recognizes it. Many third-party voice memo or call recording apps
How to Recover Corrupted Audio Files
VLC Media Player can often play "broken" or unfinalized files that other players can't. Import as "Raw Data" in Audacity: Download Audacity . Go to File > Import > Raw Data . RecordTMP (32) m4a