When I record an MP3 or any other source all visual indications indicate normal recording (visual grid jumps). But when I play back the recording it sounds like it’s coming through a tin can (nothing like the original when I was playing it). I’m unsure whether the fault is with the recording options I have selected or the playback options. In Preferences I tried all Host options plus all Playback and Recording options.
I had to reinstall Windows on this computer after a crash and Audacity worked fine before, so I know it’s something to do with the settings.
In Audacity I was selecting recording devices other then the microphone, but in the computer sound properties, the Mic remained highlighted as the default recording device. Once I chose Stereo Mix the problem was solved.
Now the recorded sound is almost identical to the original - just a very slight higher pitch.
If the mic was Windows default, choosing “Microsoft Sound Mapper - Input” or “Primary Sound Capture Device” in Audacity would still record the mic because those two Audacity inputs record whatever is the current Windows default device.