no, he's exactly right... it _is_ a finer resolution picture. just normally, you don't need that, because it doesn't change the output when simply played back. which is why we need to differentiate playback and processing.Vathek wrote:This is actually plain false and a lot of the confusion about this topic stems from exactly this misleading analogy. 96kHz does NOT lead to a finer resolution of audio than 44.1kHz or whatever...[jur] wrote:it's like taking a picture with a higher resolution... pixels are smaller and thus you can zoom in deeper while keeping lots of detail.
even with the finer resolution, the output waveform will be exactly the same (*) for a 96KHz signal as for 48Khz (keeping 2:1 for simplicity).
however, if you take a simple 4.8KHz sinewave, this will be described in 10 samples for the 48KHz, and 20 samples for the 20 KHz signal.
in many cases this doesn't matter, in some cases, having that extra detail can make the processing more exact; if you have feedback for instance, you can calculate feedback 2x as often, which because of the wild nonlinearities in feedback may make for a significantly different output waveform.
it's very analogous to taking pictures with e.g. 12 megapixels. a 5x7 picture at 300dpi resolution is only ~3.15 million pixels; anything over that is wasted. but there still may be reasons to capture at 12MPS; for starters, it may help autofocus. but the output image will be exactly the same.
(*) assuming band-limiting to 20KHz, avoiding changes in the sampling filters, etc. which may or may not affect the output, but aren't related to the bitrate directly.