DCAudioDIY.com

DC Area Audio DIYer's Community
It is currently September 21st, 2021, 1:59 pm

All times are UTC - 5 hours [ DST ]




Post new topic Reply to topic  [ 193 posts ]  Go to page Previous  1 ... 16, 17, 18, 19, 20  Next
Author Message
PostPosted: May 13th, 2021, 12:19 am 
Offline

Joined: June 4th, 2013, 2:39 pm
Posts: 374
TubeDriver wrote:
https://www.youtube.com/watch?v=zncAhs44sp8


That's very interesting. I'm a believer in the differences between USB cables, but I tried this at home. Now, I may not have done it right, but you only have to be off by one sample for the tracks not to cancel each other.


Top
 Profile  
 
PostPosted: May 13th, 2021, 9:08 am 
Offline

Joined: March 12th, 2013, 11:12 am
Posts: 672
So he seemed to address the issue of timing the tracks. I agree, any timing issue and the test is not valid.

To be honest, I am surprised he got such a measurable difference. -25db down would definitely be audible.


Top
 Profile  
 
PostPosted: May 13th, 2021, 4:23 pm 
Offline
User avatar

Joined: February 28th, 2013, 3:31 pm
Posts: 1581
I was amazed while at Charlie's with the difference in USB cables. Jim recently lent me one of the cables we auditioned and I put it in my system and it again reinforced the difference that USB cables make. I can't think of a reason why that should happen but I do hear the difference. "Every day beautiful theory is shattered by ugly old reality"


Top
 Profile  
 
PostPosted: May 14th, 2021, 11:59 am 
Offline

Joined: February 28th, 2013, 1:19 pm
Posts: 702
That was a fascinating video. It was surprising how much difference there was. Of course the leading/trailing edge of the square wave or pulse waveform is going to be impacted by the cable capacitance/inductance (rounding or ringing), as well as transmission line reflections. You are depending on triggers to detect a threshold voltage that constitutes a "1" or "0". I suppose this is more of a "jitter" issue, affecting the timing of when the change in state is detected. I was not expecting as much of audible difference though, that was very surprising. However I can say in my listening that USB cables have a significant audible influence on sound.

David


Top
 Profile  
 
PostPosted: May 16th, 2021, 10:45 am 
Offline
Site Admin
User avatar

Joined: February 28th, 2013, 10:38 am
Posts: 1530
If you want to build your own cheap endpoint, the Dell/Wyse 5070 thin client looks like a great start. Newegg has a bunch of different refurbished models available for <$200 with RAM & storage (OS only, not enough for music)....

Roscoe

_________________
I can explain it to you, but I can’t understand it for you.


Top
 Profile  
 
PostPosted: May 16th, 2021, 12:04 pm 
Offline
User avatar

Joined: January 15th, 2015, 7:19 am
Posts: 1514
Location: Baltimore MD
waiting for a comment from Dave R on the USB cable test


Top
 Profile  
 
PostPosted: June 3rd, 2021, 10:01 am 
Offline

Joined: March 12th, 2013, 11:12 am
Posts: 672
Interesting video:

https://www.youtube.com/watch?v=Jvu_doQfAI0


Top
 Profile  
 
PostPosted: June 3rd, 2021, 11:35 am 
Offline

Joined: June 4th, 2013, 2:39 pm
Posts: 374
TubeDriver wrote:



It certainly is. Good luck finding a Pi2AES, though. :-(


Top
 Profile  
 
PostPosted: June 3rd, 2021, 1:13 pm 
Offline

Joined: March 12th, 2013, 11:12 am
Posts: 672
I gather from the video that my Holo May DAC's USB implementation is so good that it is a non-issue. But still interesting that he can see such a difference in the DACs analogue output due to noise and jitter on input.


Grover Gardner wrote:
TubeDriver wrote:



It certainly is. Good luck finding a Pi2AES, though. :-(


Top
 Profile  
 
PostPosted: June 3rd, 2021, 1:15 pm 
Offline

Joined: June 4th, 2013, 2:39 pm
Posts: 374
TubeDriver wrote:
I gather from the video that my Holo May DAC's USB implementation is so good that it is a non-issue. But still interesting that he can see such a difference in the DACs analogue output due to noise and jitter on input.


Grover Gardner wrote:
TubeDriver wrote:



It certainly is. Good luck finding a Pi2AES, though. :-(


Yes, that was interesting too, about the Holo.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 193 posts ]  Go to page Previous  1 ... 16, 17, 18, 19, 20  Next

All times are UTC - 5 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 8 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron
Powered by phpBB® Forum Software © phpBB Group