I wanted Andy Bernard’s Rockin Robin ringtone on my phone so I found it online. It sounded horrible. So I used eMastered’s Stemify to isolate Andy’s voice. This removed most of the other noise like the A/C. I then mastered it in Logic Pro. It sounds pretty good. You are welcome.
iPhone Users:
Download the M4r file and save to your Mac. Connect your iPhone to your Mac with USB cable. Drag M4r files to iPhone in Finder.