Asynchronous I2S FIFO project, an ultimate weapon to fight the jitter - Page 217 - diyAudio
Go Back   Home > Forums > Source & Line > Digital Line Level

Digital Line Level DACs, Digital Crossovers, Equalizers, etc.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 20th January 2013, 03:20 PM   #2161
diyAudio Member
 
iancanada's Avatar
 
Join Date: Dec 2009
Location: Toronto
Quote:
Originally Posted by bigpandahk View Post
Ian

Same problem on the coaxial input, so only the I2S backdoor is working.
That strange. Try opt input to see what's happen. lock led lighting on the spdif board means the spdif signal received without problem.

Did you make sure the digital transformer works well with the socket well?

Or connect your spdif source with coaxial cable to other dac just confirm there is music.

Ian
__________________
Ian GBV+: I2S to PCM converter board & other accessories
http://www.diyaudio.com/forums/group...ml#post4117119
  Reply With Quote
Old 20th January 2013, 03:24 PM   #2162
diyAudio Member
 
iancanada's Avatar
 
Join Date: Dec 2009
Location: Toronto
Quote:
Originally Posted by bigpandahk View Post
Ian

When I connected an optical source to the SPDIF, it has lock LED on but no sound at the BIII, both Mute and Lock LEDs on BIII on, the system works perfectly with WaveIO connected to the I2S backdoor. Please HELP.
How about coaxial source?

Ian
__________________
Ian GBV+: I2S to PCM converter board & other accessories
http://www.diyaudio.com/forums/group...ml#post4117119
  Reply With Quote
Old 20th January 2013, 04:51 PM   #2163
diyAudio Member
 
analog_sa's Avatar
 
Join Date: Aug 2002
Location: Sofia
Default Update

Some time ago i shared my impressions of the FIFO between an EXA board and a Buf 3.

The sound, in short, wasn't very nice.

Today i finally upgraded the freebie clocks to Crysteks. What a transformation! It certainly now sounds better than without the FIFO.

Of course, a nagging thought: what if the EXA's clocks were replaced instead??
  Reply With Quote
Old 20th January 2013, 04:59 PM   #2164
TNT is offline TNT  Sweden
diyAudio Member
 
TNT's Avatar
 
Join Date: Apr 2003
Location: Sweden
Inspired by analog_sa reporting I can have the following experience:

I, for some reason, bid on a 11,2896 "Low Jitter - D/A Mental" osc on ebay. It thad reference to trentlab... don't know why really. Promised -135 at 1k but no other specs really. This was bad due diligence of course but spirited by my new fifo toy. With this XO sound is clinical, maybe "clear" but it's not music. Avoid is my verdict. Maybe I'm lucky with my generic XO that came in the package but it sound really good. I run via Ians s/pdif (in and out) so that could be a reason... but I cant se why...

/
  Reply With Quote
Old 20th January 2013, 06:39 PM   #2165
Telstar is offline Telstar  Italy
diyAudio Member
 
Join Date: Dec 2007
Location: Italy
Quote:
Originally Posted by analog_sa View Post
Of course, a nagging thought: what if the EXA's clocks were replaced instead??
Only the master clock(s) count, and I guess are the FIFO ones.
__________________
"The total harmonic distortion is not a measure of the degree of distastefulness to the listener and it is recommended that its use should be discontinued." D. Masa, 1938
  Reply With Quote
Old 20th January 2013, 07:36 PM   #2166
diyAudio Member
 
analog_sa's Avatar
 
Join Date: Aug 2002
Location: Sofia
Quote:
Originally Posted by TNT View Post
Maybe I'm lucky with my generic XO that came in the package but it sound really good.
My setup was meant to verify that in the new clock domain after the fifo the sound of the EXA was at least unchanged. With the freebies it became inferior in practically any respect. Of course the EXA is a much higher quality source than any recovered from spdif signal has any hope to be.
  Reply With Quote
Old 20th January 2013, 07:37 PM   #2167
diyAudio Member
 
analog_sa's Avatar
 
Join Date: Aug 2002
Location: Sofia
Quote:
Originally Posted by Telstar View Post
Only the master clock(s) count, and I guess are the FIFO ones.
Not sure i get this. No master clock is used by the 9018...
  Reply With Quote
Old 20th January 2013, 07:40 PM   #2168
TNT is offline TNT  Sweden
diyAudio Member
 
TNT's Avatar
 
Join Date: Apr 2003
Location: Sweden
Quote:
Originally Posted by analog_sa View Post
My setup was meant to verify that in the new clock domain after the fifo the sound of the EXA was at least unchanged. With the freebies it became inferior in practically any respect. Of course the EXA is a much higher quality source than any recovered from spdif signal has any hope to be.
Hmm, s/pdif is lossless. Period. However, it's not the best timing conveyor in universe.
  Reply With Quote
Old 20th January 2013, 07:47 PM   #2169
diyAudio Member
 
analog_sa's Avatar
 
Join Date: Aug 2002
Location: Sofia
Quote:
Originally Posted by TNT View Post
Hmm, s/pdif is lossless. Period.
Did i in any way suggest otherwise?
  Reply With Quote
Old 20th January 2013, 07:49 PM   #2170
diyAudio Member
 
analog_sa's Avatar
 
Join Date: Aug 2002
Location: Sofia
Something is baffling me: there is a +5v output on the FIFO board but it looks like it is directly connected to the incoming power. This cannot possibly be right...
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
XMOS-based Asynchronous USB to I2S interface Lorien Digital Source 2243 Yesterday 04:42 PM
exaU2I - Multi-Channel Asynchronous USB to I2S Interface exa065 exaDevices 1357 3rd March 2014 09:51 PM
DAC chip selection + I2S jitter questions drwho9437 Digital Line Level 2 26th July 2010 01:50 PM
Simple FIFO to I2S CPLD, for MCU players / reclocking KOON3876 Digital Line Level 21 19th September 2008 05:00 PM
asynchronous reclocking and low jitter clocks ash_dac Digital Source 3 8th February 2005 10:22 AM


New To Site? Need Help?

All times are GMT. The time now is 05:25 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2