I'm analyzing an audio recording made on a newish MacBook Pro in Logic, using the internal mic. Looking at the spectrogram, there's nothing above 11025 Hz, which is disturbing— if it were, say, 15kHz I wouldn't be as worried, but this makes me feel like I'm not getting the sample rate I signed up for at some stage in my ADC.
Any idea what's going on here? Have you seen anything like this? File is definitely 44100 and sounds normal.
File was converted (original bit depth/sample rate/format, so should be literally the same file) using
Cmd-click->Save As New Audio File(s) in Logic's Arrange window. Looking at the originally-recorded files shows normal content up to the expected 22050Hz.
Submitted a bug to Logic on bugreport.apple.com...
Can anyone reproduce this?