I’ve started having a weird problem - I’ve used Audacity for years with an old Tascam USB audio interface (US-428) to record into various computers - my current computer being a fairly recent-vintage Windows 10 machine. Last week I attempted to record several minutes of audio from my keyboard into Audacity, and on playback I found that partway through the recording, the pitch shifted down about 3/4 of a pitch (input was in the key of D, and the recording had shifted to the crack between C and C#). On another try I got the first stereo track to record correctly, but now every time I try to lay an additional audio track, the new audio is pitch-shifted down. I can reproduce this by starting a new project, recording a “D” from my Tunity app (playback plays “D”), adding a new track, recording “D” on the new track (during recording I hear the original “D” and the new one) - when I playback I hear two distinct pitches. On the current version of Audcity, the second recording shows a bunch of “dropout points” after it is recorded. I tried all kinds of things to fix it:
- Toyed with various controls in Audacity
- Plugged USB cable into a different USB port
- Checked every control on the US-428
- Researched audio latency
- Uninstalled unrelated but unused software
- Ran dpclat and LatencyMon to see if they could find a latency problem (they didn’t)
- Tweaked sample rates between 44100 and 48000
- Checked the battery in my mic direct box (!) (Hey, it was worth a shot!)
- Uninstalled and reinstalled Audacity using “reset my preferences” (so now I’m on 2.2.2)
Nothing helps! I should mention that I have Anvil Studio installed, and I can record multiple audio tracks in that without seeing this behavior. It seems like Audacity is the only common denominator, but like I said, I’ve used Audacity literally for years and never seen anything like this.