From Scott Jackson Sent Fri, Feb 19th 1999, 20:30
From Scott Jackson Sent Fri, Feb 19th 1999, 20:30
>Excerpts from mail: 15-Feb-99 Re: (idm) 24bit 96kHz format by >xx@xxxxxxxx.xxx >> i am not versed in the science of sound, but can >> humans hear over 20 khz? > >From what I understand, it's not the sound itself, but the waveform the >data is encoded in... digital. > >Aaron Humans have been known to hear up to 22khz. A few studies that the old soviet union did proved humans can hear much higher if the transducer was placed directly on the skull... but that's not the point. For digital recording the sampling rate needs to be AT LEAST twice the highest frequency that will be recorded. This is so that nothing will be aliased which is something bizarre that happens when you record digitally at too low of a sampling rate. New frequencies which didn't previously exist are being created. Aphex Twin uses TONS of aliasing in his songs on purpose. The come to daddy EP, at least three songs have it in there that i can hear. 44.1khz will record frequencies up to 22.05khz, anything above that gets chopped off with filters. They've done studies and supposedly even though we can't hear any higher than that, humans can detect aesthetic qualities in music that only exist in higher harmonics. It's mostly an audiophile thing, not something joe six-pack will much care about when playing his new digitally remastered Foghat CDs. -scott