[gwbas1c]

> You've misunderstood something about Nyquist. A sample rate of, say, 44KHz, will capture ALL information below 22KHz and recreate it perfectly.

Let's do a thought experiment. Imagine a digital image where the pixels are the exact minimum size that you can see.

If a line is exactly 1-pixel-wide, it'll display perfectly when it aligns perfectly with the pixels.

But, if the 1-pixel-wide image doesn't align with the pixels, what happens?

You can see this in practice when you have a large screen TV, and watch lower-resolution video. Smooth gradients look fine, but narrow lines have artifacts. IE, I recently saw a 1024p movie in the theater and saw pixels occasionally.

The same thing happens in sound, but because a lot of us have trouble hearing high frequencies, we don't miss it as much.