moi621 (imported) wrote: Fri Apr 15, 2011 8:28 pm
Consider the movie, Gone With The Wind.
Although currently quite digital, its' colors are so much more vibrant as movies of that era that were "filmed".
There has been no apparent loss with transfer to digital storage. Why can't audio be as capable?
Moi
Moi,
Keep in mind that with movies like Gone With The Wind, the cinematography was planned to make maximum use of the then-new color film technology, so the colors *had* to be rich and vibrant! Same thing with TV in the mid-60's; watch some old shows from about 1965-70 or so, and you'll notice that there's a *lot* of bright colors used! The reasons are *exactly* the same; making the best use of the new color technology!
As far as audio goes, it *can* be as capable; it has to be *practical*, too, though, and that's where we run into problems...
In analog recording, the signal itself is recorded onto tape; in digital, the signal is converted into digital data first. Digital conversion is done by capturing the level of the soundwave 44,100 times per second (if you see "44.1 kHz" used wrt a CD, that's what it means), kind of like taking a picture of the waveform, then another, and another, not unlike the frames in motion picture film.
The problem, though, is that you're limited to audio signals of 22.05 kHz; it's above the range of human hearing, but those frequencies can affect the sound to a degree. Plus, there's always a 'step' between samples; that can make the sound less smooth on playback.
CDs use 16-bit audio at 44.1 kHz; higher-end recording systems use 24-bit audio at 48 kHz, 96 kHz, and even 192 kHz. The problem is that those higher rates use a *lot* more disk space!
So both analog and digital have their advantages and drawbacks...
-YPA