Not sure who's doing the torturing here..fishmonkey wrote:i think you are still torturing the analogy.
a 50 Hz sine wave (not just any 'wave') can be perfectly captured with a sampling frequency of just over 100 Hz because it is a slow and simple wave to reconstruct mathematically.
analogously, a very long straight line can be perfectly sampled with just a few data points.
It doesn't matter what kind of wave it is, anything not containing any frequencies above 50Hz can be perfectly captured with a sampling frequency of 100Hz. Now that's of course not a very practical example, because pretty much any sound at 50Hz will have harmonics above that, so let's increase the sampling rate to 20kHz. Now every sound not containing anything above 10kHz can be perfectly captured.
But we both know that, this is really becoming a question of semantics. I find the analogy misleading because it makes many people believe that increasing the sampling rate somehow makes for more detailed sounding recordings which is simply not true.
I agree that in music production with a lot of number crunching, it may (or may not depending on the situation) make sense to increase the sampling rate. I'm only arguing against the myth of a somehow more accurate and truer recording when doing so, which is sadly kept alive by such analogies. And people like Neil Young (whom I respect very much otherwise) sell that crap to ignorant consumers.