> Apparently according to everyone there you can totally and easily tell the difference between 24 and 16 bit.Those are people who just spent a lot of money on the USB apple and have to justify their purchases. So of course they're going to hear HUGE differences between them.Nothing will affect your hearing like spending $240.
There's a somewhat enjoyable back-and-forth on this topic in one of the Amazon reviews - the only one who gave the USB box 2 stars.
It's like putting more pixels on point-and-shoot digital cameras for people to make 6x4 prints - though in that case more pixels can sometimes reduce the quality!
And besides all that, there are actual advantages to having more pixels, even when you don't gain more resolution (e.g. if you're resolution-limited by the lens). You can do leveling, rotating, perspective correction and other such interpolating procedures, without losing as much resolution.
Agreed about the comments on Amazon.I've compared the two properly now (sent to me via PM - thank you!). I've attached spectral plots to show one moment from I Saw Her Standing There. I chose a comparatively quiet bit (i.e. between drum beats, rather than on the beat!) so that the contribution of 16-bit noise shaped dither above 20kHz would be visible. You have to look carefully though!In essence, the two are the same, except for the 16-bit dither, and a 0.2dB level difference (24-bit is louder - neither hits digital full scale). I "corrected" this difference by attenuating the 24-bit version by 0.2dB before subtracting one file from the other.Strange thing is, they're not actually identical. Even when the gain of the 24-bit file it changed to match that of the 16-bit file, it doesn't match throughout. There's another ~0.01dB gain discrepancy creeps in at certain moments - not enough to be audible in itself, but it stops the two files from nulling out completely during those moments. For one moment only (after the quieter "1, 2, 3, 4" - at the exact moment the track really starts) the gain difference is greater - about -50dB down.Otherwise the difference is -64dB down, and consists of the noise shaped dither only.It looks to me like they ran the peak limiting separately for the 24-bit and 16-bit versions - using near-identical settings, but getting a non-bit-identical output.So sadly there's no greater dynamic range in these 24-bit versions - in fact there's nothing of use that isn't already there in the 16-bit version.If you try to ABX (good luck! ), be aware that a 0.2dB level difference might just be audible under some circumstances - certainly far more audible than any other difference between 16-bit and 24-bit.Cheers,David.
HA is an objectivist audio site.
I had a look at the mis-tagged files, and it looks as if Yellow Submarine had a nice error in its tags. "Pepperland Laid Waist", hah. And the filename was already correct, I think.