bhaagensen;379273 Wrote: > It requires an infinite summation. See: > > http://en.wikipedia.org/wiki/Whittaker%E2%80%93Shannon_interpolation_formula.
It requires in a given time a minimum number of discrete, equally spaced samples. The number of samples for perfect interpolation/recovery is determined by the bandwidth of the signal to be recovered. 44,100 samples per second are required to recover 0Hz-22,500Hz. The Sigma (sum) across +/-infinity refers to recovering information for an infinitely long period of time... because the formula in question is trying to recover a continuous result (the audio signal in this case). bhaagensen;379273 Wrote: > > Are you saying that sound is not continous? Please explain. In the ear/brain interface the vibrations of air molecules are bio-mechanically amplified and then transformed into a series of discrete electrochemical PULSES (not a continuously changing voltage or current!) - by the special inner hairs of the cochlea - which are somehow interpreted by the brain as continuous sound... hmmm. That sounds familiar! Recently digital cochlea implants have been developed that are essentially ADC's - and they work very, very well. Nerve endings (10 per ear-hair in this case) are not "analogue" in design - they respond to/generate a binary state change (on/off) not a continuously changing signal. -- Phil Leigh You want to see the signal path BEFORE it gets onto a CD/vinyl...it ain't what you'd call minimal...SB3+Stontronics PSU - Altmann JISCO/UPCI - TACT 2.2X (Linear PSU) + Good Vibrations S/W - MF Triplethreat(Audiocom full mods)- Linn 5103 - Aktiv 5.1 system (6x LK140's, ESPEK/TRIKAN/KATAN/SEIZMIK 10.5), Townsend Supertweeters, Kimber & Chord cables Outdoors: Boombox+Creative Sub (If I remember to turn it on...) ------------------------------------------------------------------------ Phil Leigh's Profile: http://forums.slimdevices.com/member.php?userid=85 View this thread: http://forums.slimdevices.com/showthread.php?t=57631 _______________________________________________ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
