If it's purely an engineering challenge why bother designing yet another DAC?

Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
Moving on, hopefully. '-)

Why??? There are so many questions left unanswered!

Where is your rebuttal of Vanderkooy and Lipshitz contribution to the field? How do you propose Bybee devices could provide audible benefit? Are you afraid of rigour??? I welcome it, just as i would if you could find fault in my contributions, since that would lead to increasing my understanding (and possibly other contributors too).

And what does the quote say on your profile? "Condemnation without Examination is Prejudice". Might be an idea to remove that in case anyone thinks it is verging on the hypocritical...
 
Here is the LTE in AA, from over 41 years ago:
 

Attachments

  • aa1-79jc.jpg
    aa1-79jc.jpg
    780.4 KB · Views: 95
Member
Joined 2014
Paid Member
Well understood in recording, even this place explains: Reverb Tail - Soundsnap Blog

Also discussed in four different sections at:
Cheat Sheet: Reverb Parameters - EMusician

Nothing mythical about what they are.


Except your description on how different DACs handle them as if they are some unmeasurable parameter. What you have linked to there is something any sound card could resolve.



Remember you said

One of the DACs that loses low-level reverb tails is DAC-3. Measurements performed at Stereophile show ENOB = 21-bits. There are no missing bits as measured however Sterophile does it, and 21-bits is pretty much SOA.

It seems from my experiments with adjustments to dac registers and or AK4137 DSD sample rate, that reverb tail loss is linked to I2S/DSD clock jitter and or dac VCO jitter as function of DPLL bandwidth, at least for S-D dacs of the type most of the tested dacs are. Also, Allo Katana RPi hat DAC reproduces the tails pretty well


I'm afraid the links you posted don't to me tally with what you have said on here. but I admit to me decay is the 8 or so seconds the sound of a choir needs to fade out in a sizable chapel.
 
...jitter does not make a DAC output signal disappear.

One wouldn't expect so using a simple model of how jitter affects dacs. Sabre dac DPLL bandwidth has some interesting audible effects, however. No wonder ESS recommends to run it at the lowest stable value. My previously described observations and related suspicions remain unchanged. No effort to measure the effects have been done by me, either. The subject is of no further practical interest here, since a preferred (and better measuring) dac chip is now available from AKM.
 
That is an excellent pic :)

A flying bin of rubbish seemed very timely! :D (That's a flying can of trash for the non-English speaking contributors). But what do you see? A flying bin or a puddle in front of the bin? Most interesting to me is that even when you settle on one perception of reality, you can train yourself to see the other. Of more relevance to this thread, I wonder who here can state with certainty what the artist created?
 
Interestingly in thumbnail it looks to be floating as the resolution is lower. click on it and it (to me) is easier to see the reality.

But can you train yourself to see the other interpretation? Oddly looking at the screen from different directions seems to make a difference for me, so maybe there are some correlations made with the environment in which it is viewed?
 
Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.