You're tilting at windmills here. I have not so far mentioned anything about roll-off at 22kHz and why would I? That in the range of ultrasonics.
As for the glaring errors on that website - here's one to be going on with. The writer conflates 'multi-bit DAC' with 'R2R DAC'. So then when he goes on to claim that Philips made R2R DACs, he's in error. They didn't. They made some of the best (if not the best) multibit DACs but none were R2R. Want to argue that as a fact? Here's another - he says that the PCM1704 has 'true 24 bit noise-free resolution' - the datasheet disagrees with this claim. So are we to believe BB/TI engineers or the website author?
Wow. Isn't that just a nice insult.
I'm merely giving information. You are not. You are just stating (unfounded) facts and opinions.
The writer conflates 'multi-bit DAC' with 'R2R DAC'.
So what is the difference? What else was there other than R2R before the invention of the sigma-delta DAC? If Philips invented the dac for CD what chips did they make before?
So then when he goes on to claim that Philips made R2R DACs, he's in error. They didn't.
So what are you saying? That the TDA1543 isn't made by Philips or that it is no R2R? Then what is it? Yes, a multibit, but how does it work?
Here is another site; same content (not surprising since they are in the test). enjoythemusic.com
It is clear that mother of tone is not the first with a NOS or ZO-DAC.
I would like to compare my modded Muse 4x with that competition.
Burr Brown stateds for its PCM1704: SoundPlus™ 24-Bit, 96kHz BiCMOS Sign-Magnitude Digital-To-Analog Converter.
Here is the pdf where it states 24-bit resolution. and the noise-free you can see in the oscilloscope pictures: it still shows a sinus at -120dB compared to a flat line with a 20bit dac.
This is a quote from a developer (who seems to actually know what he is talking about and is willing to explain in plain English) that says it all imho (src).
The 1704 does work with R2R though (but keep in mind the "sign magnitude" thing which adds a little smartness to it) and for 24 bits there are no others anyway.
Just what reality isn't linear? Man, you are so confusing the issues. How can a violin IRL not sound like a violin IRL? How can reality not be reality 1:1 in normal Newtonian physics?
Yes a loudspeaker has to be linear to make a recorded violin sound lifelike. And so does a headphone. For earplugs it is different however. There the acoustics of our outer ear have to be taken in account and this give a different frequency response. I think the Etymotics website has good information on that.
Edited by ]eep - 3/7/12 at 11:02am