Questions about equivalents of audio/video and digital/analog.
On Aug 19, 8:34 pm, "Bob Myers" wrote:
Sampled analog systems are certainly
not very common today (unless you count certain forms of
modulation as "sampling," and in fact there are some very close
parallels there), but the theory remains the same no matter which
form of encoding is used. In any event, you must sample the
original signal at a rate equal to at least twice its bandwidth (actually,
very slightly higher, to avoid a particular degenerate case which
could occur at EXACTLY 2X the bandwidth) in order to preserve
the information in the original and avoid "aliasing."
Is the CCD [Charge Coupled Device] a "sampled analog system"?
|