Apologies in advance for not knowing the correct terminology in some areas…newbie.
I’ve noticed in my learning of Mixxx that when loading some tracks into either deck, the beat grid isn’t hitting anywhere near the ‘whomp-whomp-whomp’ of a bassline. I know how to adjust the beatgrid so not a biggy, just wondering how it works.
The second thing I’m interested in is why some tracks gradually fall out of alignment with the beat grid…I’m finding this in particular with Phuture’s ‘Acid Tracks’…main bass line slips right off the beatgrid within about 8 beats of the drum and gradually gets worse until it later aligns with the beatgrid for another 8 beats or so, so I’m constantly nudging it. There are a couple of others like that. I realise that some tracks have changing BPM (L’il Louis ‘French Kiss’ I’m looking at you) which I guess would cause this, but AFAIK, Acid Tracks is a steady BPM.
Could it be something like digital files made from analogue (vinyl) sources where the turntable has slight, phonically imperceptible changes in tempo?
Thanks for any advice.