Archimago;689023 Wrote: > Hi all, > It's one of those questions I don't recall much discussion about. It > comes about because of music like Kent Poon's Audiophile Jazz Prologue > III (where the hi-res material looks like upsampled 44/48! yet he > claims it was natively recorded at hi-res but presumably a filter added > in postprocessing). > > If I'm recording some audio in PCM that contains no frequency >20kHz, > is there any benefit to recording this at 88kHz or more? That is, does > sampling theory suggest that the improved temporal resolution will add > anything once the signal is reconstructed in the DAC? > > I've always assumed that the improved temporal resolution should give > us better transient response (ie. the slam of the kick drum might just > arrive slightly quicker and more precisely, whether the ear/brain > detects it is another matter). I'm thinking it might not be so obvious > once we go through the science of it all... > > Regards, > Arch
Shannon/Nyquist theory is by clear... To "perfectly"reconstruct a signal of Frequency F you need a sampling frequency of 2F. The are of course some subtle provisos to this theory. however there is definitely no improved temporal resolution to be had - that is an audio myth, just like the classically misleading (indeed poisonous) staircase diagram that implies a need for lots more samples/bits... Coz you know 16/24 @ 44.1 just ain't enough to capture the subtleties... :--> The real question is is 20khz enough? I reckon that for 99.999% of people who even care about this question, 15khz is plenty! :-) -- Phil Leigh You want to see the signal path BEFORE it gets onto a CD/vinyl...it ain't what you'd call minimal... Touch(wired/W7)+Teddy Pardo PSU - Audiolense 3.3/2.0+INGUZ DRC - MF M1 DAC - Linn 5103 - full Aktiv 5.1 system (6x LK140's, ESPEK/TRIKAN/KATAN/SEIZMIK 10.5), Pekin Tuner, Townsend Supertweeters,VdH Toslink,Kimber 8TC Speaker & Chord Signature Plus Interconnect cables Stax4070+SRM7/II phones Kitchen Boom, Outdoors: SB Radio, Harmony One remote for everything. ------------------------------------------------------------------------ Phil Leigh's Profile: http://forums.slimdevices.com/member.php?userid=85 View this thread: http://forums.slimdevices.com/showthread.php?t=93483 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/audiophiles
