evdplancke;689106 Wrote: > Nyquist theorema tells there is no benefits but is based on the > following assumptions: > 1) sampled signal is made of perfect dirac pulses... practically they > will look like square pulses resulting in a quite bad low pass sin x/x > filtering that zeroes at 1/T where T is the width of the pulse > (staircase sampled signal being the worst with 1/T equals to sample > freq) > 2) sampled pulse has a constant time period... but in reality time > period is varying due to jitter > 3) signal reconstruction is using perfect brickwall filters... but in > practice it is very difficult to have steep filter slope without > artifacts > > In conclusion, there might be a (big?) gap between theory and > practice. > > According to the 3 assumptions above, here are the (audible?) benefits > of 96khz: > 1) higher sample freq is reducing the low pass effect of square pulses, > rejecting the resulting zeroes to higher freq > 2) doubling the number of pulses adds redundancy to the signal that > increases immunity to jitter > 3) less steep brickwall filters are needed for signal reconstruction, > reducing artifacts and improving linearity > > So hi res might technically improve the accuracy of reconstructed > signal even if baseband signal does not contain any freq above 20 khz. > > The question remains however: are those benefits audible or not? I'd > say it makes it at least more robust against less than optimal receiver > implementation.
There's still no irrefutable evidence that anyone can hear the difference - you'd think by now the Net would have at least a few conclusive studies....? -- 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 audiophiles@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/audiophiles
