Withdrawn: No more blurry album covers!

[Miss Sissy Princess]

Ok, now you're getting into semantics of random text book authors, and I don't even mean the one you cited.  "Nyquist's Theorem" as a name was a Bell Labs term applied after Shannon wrote his theorem, citing Whittaker's work.  At least according to wikipedia, with references, but still wikipedia (so not the most authoritative).  I'm happily not a theorem name historian.  It seems you understand sampling.  Good for you.  Most people don't and think < fs/2 is THE RULE.  Sad.  But hey it's your question so fine I won't pick your album art size.  You win.

I hope in the future you will cite the Nyquist-Shannon theorem so that you can help spread knowledge of the more nuanced and correct limit.  Then maybe more people will answer correctly when I ask them how fast they have to sample the bandpass signal I draw for them.  Too many textbooks get hung up on the semantics of "Nyquist's Theorem" and beat incomplete information into people's heads.

seashell, you're a good guy and a lot smarter than almost any I run across on the 'net.  I started my engineering career in the very early 1980s developing firmware and software for NIR spectrophotometers, so embedded systems and DSP are not new to me.  

The problem with citing Shannon when it comes to audio is that it's hard enough to get most people to understand Nyquist's theorem without throwing in concepts of undersampling and having the ADC serve a dual role in which it also acts as a downconverter or mixer.  Eyes just glaze over since many of them think that the analog waveforms coming out of CD players have stairsteps.

P.S. If we're really going to be pedantic, your question should use kHz, not KHz.

You are, of course, correct.  I've become sloppy on that and appreciate the reminder.  

P.S.  Robert Oshana is more than a random textbook author and you should check out his bio.  He's been in senior engineering positions at NXP, Freescale, TI, Raytheon, etc.  If you're an embedded systems person, you may well have read something by him at some time.