Jeff07971 wrote: > After an "interesting" :) discussion here regarding bandwidth and sample > depth/rates in digital audio I found this interesting :- > > http://www.cco.caltech.edu/~boyk/spectra/spectra.htm
I'm not sure anybody claims that such instruments do not produce >20KHz sound, like some produce heat, light reflexion, change the % humidity in the air when you blow in them (I'm not being sarcastic) and maybe other things. The point is that these elements are under perceptual level of humans and/or irrelevant for replay. Or shall we reproduce all the environment variables of a recording when it was made? A dog barking at the other side of your town will make a noise of which some will reach you when you listen ... but you'd probably agree there are neglegible. Your hearing has a lowpass filter <20KHz, so even if the instrument has a decent amount of energy >20KHz, as long as the digitization process include as similar lowpass filter before sampling @ more than Nyquist, then there is no aliasing and your human filter versus the digitization filter have no more difference/impact than the barking dog. LMS 7.7.5 - 5xRadio, 3xBoom, 4xDuet, 1xTouch, 1 SB2. Sonos 2xPLAY:1, PLAY:3, PLAY:5, Marantz NR1603, JBL OnBeat, XBMC, Foobar2000, XBoxOne, JRiver 21, Chromecast Audio, Chromecast v1, Pi B2, Pi B+, 2xPi A+, Odroid-C1, Cubie2 ------------------------------------------------------------------------ philippe_44's Profile: http://forums.slimdevices.com/member.php?userid=17261 View this thread: http://forums.slimdevices.com/showthread.php?t=106621 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/audiophiles
