a lot of advertisements the speed (tempo) is increased and pitch remains normal. I’ve played with many audio tracks taking them down in speed (blues tracks), explored the limits, and sometimes messed around with increasing the tempo.
generally about a -3% is no problem, and just rarely i’ve found as much as 15% to be not just alright but an improvement (for me), for example “Little Willie – Otis Taylor(15percent slower leveled etc)” that is what the file is called. I just checked that file put it through Audacity +15% and compared it with the youtube version.
to cram more into advertizements there seems to be a lot of this going on, but I think too some TV programs, which means manipulations of moving images involving the audience’s perceptions and feelings of what is natural movement, or acceptable and probably pleasurable/entertaining (unnatural) movement.
I guess there are a lot of tricks they use, and there’d be some overlap with compression algorithms used with digital TV these days which can push say five channels down one carrier. They cut a lot of data out, it’s made redundant and for this it is patched up some how to make it look alright, sometimes it doesn’t.
I mean way back with steve austin in six milion dollar man viewers got accustomed to him going slow and we all knew he was meant to be understood to be going really fast, and I felt he was going really fast when running after a speeding car, and much later there was the matrix. That involves slow = fast.
I’m wondering about the tricks to make faster (more crammed) content look, appear or feel acceptable.
anyway, my interest more is of how film and TV may influence human brains and make us both ‘hungry’ and oblivious to the speed of the cramming.