IPB

Welcome Guest ( Log In | Register )

Anti-jitter RAM buffer in DACs, Which have one ?
Pio2001
post Aug 3 2003, 10:00
Post #1


Moderator


Group: Super Moderator
Posts: 3936
Joined: 29-September 01
Member No.: 73



In, http://www.tc.umn.edu/~erick205/Papers/pap...html#principles we can read about RAM buffers :

QUOTE
This process is referred to as timebase correction and as stated before, any quality piece of equipment will implement it.


That has been the ritual answer to jitter concerns since I'm on the Internet.

But... if "any quality piece of equipment will implement it", then some non-quality pieces of equipment don't implement it. My question is : which ones ?

The statement "quality piece of equipment" is completely subjective and doesn't give any information. For my grandfather, a "quality" CD reader will be a portable radio-cassette-CD-speakers combo for 100 $ in the supermarket. The "non-quality" one will be the Fisher-Price toy for children from 3 to 7.
For an audiophile friend, the "quality" CD player will be the 25,000 $ Wadia CD Transport+DAC, while any player under 1,500 $ is just worthless crap.

So, do a 200 $ CD Player always have a RAM buffer ? Or is it not considered a quality piece of equipment ? What about a 300 $ CD Player from 1990 ?
Go to the top of the page
+Quote Post
 
Start new topic
Replies
ChristianHJW
post Aug 7 2003, 16:01
Post #2


Matroska developer


Group: Members
Posts: 922
Joined: 29-September 01
Member No.: 74



This thread confirms a couple of opinions i have since quite some time now :

1. A well tuned CD player, with drive speed controlled by the DAC timer/buffer does always ( say, in most cases ) sound better then external drive / DAC combo's, however expensive they might be

2. SPDIF sucks in terms of preserving highest possible quality ( its practical, easy to handle, but thats about it )

3. MISSION people knew what they were doing when inventing a new digital interface ( no SPDIF on these devices ) for their hi-quality CD drive / DAC combo's , with good old handshake signals to sync the timing wink.gif ....


--------------------
Support matroska - the bestest vapourware project ! http://www.matroska.org
Go to the top of the page
+Quote Post

Posts in this topic
- Pio2001   Anti-jitter RAM buffer in DACs   Aug 3 2003, 10:00
- - Patsoe   Since it's the cheapest thing, I can't ima...   Aug 3 2003, 19:58
- - F1Sushi   All CD players contain buffer memory between the E...   Aug 3 2003, 21:13
- - Halcyon   QUOTE As far as jitter at the DAC stage is concern...   Aug 4 2003, 09:36
- - 2Bdecided   Pio, I agree with the importance of your question...   Aug 4 2003, 11:27
- - F1Sushi   QUOTE (Pio2001 @ Aug 3 2003, 05:00 AM)So, do ...   Aug 4 2003, 12:53
- - F1Sushi   QUOTE (Halcyon @ Aug 4 2003, 04:36 AM)Does th...   Aug 4 2003, 13:44
- - Patsoe   Those are interesting side notes, F1Sushi. Could ...   Aug 4 2003, 14:05
- - F1Sushi   QUOTE (Patsoe @ Aug 4 2003, 09:05 AM)Those ar...   Aug 4 2003, 14:25
- - Patsoe   QUOTE (F1Sushi @ Aug 4 2003, 02:25 PM)http://...   Aug 4 2003, 14:44
- - Pio2001   Thanks, all of you for the answers. There was a pa...   Aug 4 2003, 14:54
- - F1Sushi   QUOTE (Patsoe @ Aug 4 2003, 09:44 AM)QUOTE As...   Aug 4 2003, 15:01
- - Pio2001   Sorry, I completely lost the link. It was an old s...   Aug 4 2003, 21:13
- - F1Sushi   QUOTE (Pio2001 @ Aug 4 2003, 04:13 PM)Sorry, ...   Aug 4 2003, 21:21
- - Pio2001   No sorry, there was no color, it was all about jit...   Aug 4 2003, 22:02
- - F1Sushi   QUOTE (Pio2001 @ Aug 4 2003, 05:02 PM)No sorr...   Aug 4 2003, 22:13
- - Halcyon   F1Sushi, thanks for the clarification! More ...   Aug 5 2003, 08:52
- - F1Sushi   QUOTE (F1Sushi @ Aug 4 2003, 04:21 PM)QUOTE (...   Aug 6 2003, 03:23
- - F1Sushi   QUOTE (Patsoe @ Aug 4 2003, 09:05 AM)Those ar...   Aug 6 2003, 04:10
- - Pio2001   QUOTE (F1Sushi @ Aug 6 2003, 05:23 AM)Could t...   Aug 6 2003, 12:49
- - TrNSZ   There is a device available from most high-end aud...   Aug 6 2003, 13:24
- - F1Sushi   QUOTE (TrNSZ @ Aug 6 2003, 08:24 AM)There is ...   Aug 6 2003, 14:17
- - F1Sushi   Found it - actually it's from Monarchy Audio, ...   Aug 6 2003, 14:36
- - Patsoe   Actually, from the description I'd suspect it ...   Aug 6 2003, 15:22
- - F1Sushi   QUOTE (Patsoe @ Aug 6 2003, 10:22 AM)Actually...   Aug 6 2003, 15:34
- - TrNSZ   To clarify on the "Monarchy Audio" DIP D...   Aug 6 2003, 15:57
- - F1Sushi   QUOTE (TrNSZ @ Aug 6 2003, 10:57 AM)To clarif...   Aug 6 2003, 16:20
- - 2Bdecided   In the current (September!) issue of Hi-Fi New...   Aug 6 2003, 16:32
- - F1Sushi   QUOTE (2Bdecided @ Aug 6 2003, 11:32 AM)The o...   Aug 6 2003, 16:42
- - Halcyon   2Bdecided, do you know of studies/measurements an...   Aug 6 2003, 19:25
- - F1Sushi   QUOTE (Halcyon @ Aug 6 2003, 02:25 PM)However...   Aug 6 2003, 19:44
- - Pio2001   You can always record an SPDIF output with an SB l...   Aug 6 2003, 21:19
- - Patsoe   QUOTE (F1Sushi @ Aug 6 2003, 03:34 PM)QUOTE (...   Aug 7 2003, 08:30
- - F1Sushi   My take on it is that the statement about "ab...   Aug 7 2003, 12:46
- - Patsoe   QUOTE (F1Sushi @ Aug 7 2003, 12:46 PM)Thought...   Aug 7 2003, 15:23
- - 2Bdecided   QUOTE (Patsoe @ Aug 7 2003, 02:23 PM)QUOTE (F...   Aug 7 2003, 15:36
- - F1Sushi   QUOTE (2Bdecided @ Aug 7 2003, 10:36 AM)QUOTE...   Aug 7 2003, 15:42
- - ChristianHJW   This thread confirms a couple of opinions i have s...   Aug 7 2003, 16:01
- - Patsoe   QUOTE (ChristianHJW @ Aug 7 2003, 04:01 PM).....   Aug 7 2003, 18:56
- - Halcyon   Shhh... don't tell them. It's reserved for...   Aug 7 2003, 20:09
- - F1Sushi   Just came across this link, which raises several t...   Aug 7 2003, 20:42
- - 2Bdecided   This thread should be in the FAQ! Cheers, Dav...   Aug 8 2003, 09:51
- - F1Sushi   Here's a Monarchy Audio DIP on a chip: http:/...   Aug 8 2003, 16:36
- - d_kay303   QUOTE (ChristianHJW @ Aug 7 2003, 07:01 AM)Th...   Aug 14 2003, 08:44
- - Patsoe   You're pointing out the exact reason why a two...   Aug 14 2003, 09:25
- - Pio2001   As 2Bdecided explained, this is only valid for che...   Aug 14 2003, 12:17


Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 



RSS Lo-Fi Version Time is now: 20th April 2014 - 15:22