Hi Erik,
Although I did say that sndfile-resample sounded ever so slightly better,
I also indicated that it was also ever so slightly less accurate.
The sndfile-resample sounded ever so slightly better than either the
original or the FFT-overlap resampled version (which sounded identical
to each other). I detected almost-imperceptible smoothing. It was
very difficult to hear any difference at all, so I think it did a very
good job on the voice. I have not attempted to evaluate the clicks and
pops wherein one might expect to hear more differences.
Best regards,
Dave.