By ssyniu
Sun Sep 10, 2017 7:12 am
tapedeck wrote:ssyniu wrote:All right so this trick is affecting sample rate I would never thought about it.
Thanks dude.
yes. think about it this way - if you sample one second of audio at 44.1k, that 1 second of audio has 44.1k samples in it. if you then slow that down by half, those same 44.1k samples have to spread out across 2 seconds now.
44100 / 2 = 22050 samples per second .... effectively half the sample rate.
that is a pretty simplified version, and the way each machine 'interpolates' the new samples (filling in the gaps from stretching 44.1k samples from 1 second to 2 seconds) is usually pretty unique, and contributes a lot to the sound of the machine. this is why pitching things sounds different across different samplers (emu's are very noticeable for example).
this also explains why sampling at a lower frequency is not the same as sampling at a higher frequency and then pitching down - because there is no need for interpolation if you sample at low rate to begin with.
nerdalert
Nerd alert continue
Last edited by ssyniu on Sun Sep 10, 2017 7:17 am, edited 2 times in total.