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回覆 (736): CAS studies
 
 
Thanks doctors, give me some time to digest the idea. Right now I am busily working on the display panes and tags........  
 
 
limage
13-01-31
21:02:39
回覆 (735): CAS studies
You can also look into squeezelite. Does the same thing with much less pverhead Linux platform
ackcheng
13-01-31
19:50:28
回覆 (734): CAS studies
Since my present HP is already used solely as a program source, what difference does it make to have another pc as controller?  
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the idea is that you can have a pc dedicated to outuput to dac. nothing more. your other pc will run the jriver and disk access, decoding etc are done on this pc. this eliminates any possiblity of interference. this is model i'm going to use for my CAS.
drwkng
13-01-31
16:37:53
回覆 (733): CAS studies
 
 
Since my present HP is already used solely as a program source, what difference does it make to have another pc as controller?  
 
limage
13-01-31
16:24:23
回覆 (732): CAS studies
but with the new streaming capability, you can dedicate a pc just for output and have another pc to manage the music files etc. the connection can be either WIFI or hard wire.
drwkng
13-01-31
14:35:26
回覆 (731): CAS studies
 
 
One of JPlay's secret weapons is its ability to override Window OS to ensure the lowest latency and I have also set the computer to give top priorities to Audio applications using ASIO driver. This HP of mine is now a dedicated music source. All other functions including internet access are disabled.  
 
Using ASIO alone without JPlay may often result in listening fatigue. This fatigue manifests itself in a crisp and yet slightly dry character which I guess is very typical of digital sound and which may often be mistaken for extended frequency range.  
 
There are quite a number of ways to fine tune JPlay settings like buffer level, output methods, volume etc. for bit perfect streaming. I've tried each and every one of them for a week and by making use of the prodigious 16G RAM, I have now settled on what I consider the best compromise which can be surprisingly musical.  
 
^‿^  
 
 
limage
13-01-31
13:38:59
回覆 (730): CAS studies
the new jplay has a streaming capability. it might change the way you organise your pc.
drwkng
13-01-31
11:41:55
回覆 (729): CAS studies
 
 
JRiver is just the media player, the hero is in fact JPlay. The two together make a perfect match. JRiver costs less than 50 bucks US, but JPlay costs 100 Euro!  
 
 
limage
13-01-29
20:23:43
回覆 (728): CAS studies
Seems its time for me too to board the CAS train...and seems Jriver gets the spotlight and approval from a few who know this matter well.  
 
Welborne
13-01-29
18:57:42
回覆 (727): CAS studies
 
 
Yes Dominic, the analogue artifact still rules supreme in terms of musicality. No doubt about it, but then digital has made leaps and bounds in recent years. I remember when I had the first CD player by Sony back in early 80s and its sound was nothing more than a joke despite its bewildering spec.  
 
While analogue cannot possibly have any more breakthroughs in the foreseeable future, digital is accelerating at a pace that we have trouble just catching up. Judging by the performance a newbie like me is getting out of CAS, the futures looks more than promising!  
 
limage
13-01-29
16:30:01
回覆 (726): CAS studies
Stay w/ the turntable when comparing w/ CAS. :-)  
Super table still kick their claim to be super CAS today ... Old lady LP-12 still sings over CAS just missing the omph (supper top & super bottom ... which means nothing left ... ?! :-) )  
 
My expeirence was (i have a shitty CD player anyway Linn Genki) if I compare my CD player w/ CAS, I will lose very quickly because there are so many parameters in CAS that will excite me over my borning Linn. I suspect it will have the same effect on many digial front end today :-) You could get fatique but that's a different discussion.
Cadiver
13-01-29
15:06:11
回覆 (725): CAS studies
 
 
No, the Ensemble is fine as a bench mark. It's interesting to see the difference with various settings on the CAS.  
 
limage
13-01-29
14:45:49
回覆 (724): CAS studies
aren't you using the dac for your cd transport as well?
drwkng
13-01-29
14:34:26
回覆 (723): CAS studies
 
 
king,  
 
I am very busy already. The GUI (graphic user interface, btw I never understand what interface is) alone is good enough to keep me fully engrossed for quite a while. The JRiver player is indeed powerful in that its organizing power is almost without bounds. I am trying to make better use of its capabilities to create my own index system, a system I have told you more than a year ago.  
 
It may not be worth the while at the moment since my CAS is primarily for recordings I have missed plus a few dozen high res files which are not yet available. The built in hard disc has 1T memory bank which ought to be sufficient for something like 500 albums.  
 
limage
13-01-29
14:29:17
回覆 (722): CAS studies
No, not yet. The V-Cap is likely to be too bulky to stow into the two tier PC board.  
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don't worry. i'm sure we can keep you busy.
drwkng
13-01-29
09:57:16
回覆 (721): CAS studies
 
 
No, not yet. The V-Cap is likely to be too bulky to stow into the two tier PC board.  
 
limage
13-01-28
12:08:58
回覆 (720): CAS studies
have you tested the Vcap yet?
drwkng
13-01-28
11:20:04
回覆 (719): CAS studies
 
 
A thousand thanks to mdlover who helped me (a near computer idiot) to set up the JRiver player along with JPlay control on the new HP console. It took less than an hour, much easier than I would have envisaged and after a few steps of adjustments on the operation settings for the super fast HP, everything seemed to work flawlessly.  
 
Further fine tuning is on the way but I have to study the manual in detail and providing I may understand the computer language in its true context, this step is likely to take a week or two. Hopefully it is going to bring me performance at least one step upward of the red book CD.  
 
^___^  
 
 
limage
13-01-28
10:49:40
回覆 (718): CAS studies
The material of the USB cable do sound different too...
accphoto
13-01-28
10:29:31
回覆 (717): CAS studies
 
 
Try different lengths of USB cables, seems 2 meter is okay.  
 
 
limage
13-01-27
14:53:56
回覆 (716): CAS studies
 
 
Well you are damn right, there is a limitation on the length of the cable. Wikipedia here expresses the industry standard:  
 
 
"The data cables for USB 1.x and USB 2.x use a twisted pair to reduce noise and crosstalk. USB 3.0 cables contain twice as many wires as USB 2.x to support SuperSpeed data transmission, and are thus larger in diameter.[43]  
The USB 1.1 Standard specifies that a standard cable can have a maximum length of 3 meters with devices operating at Low Speed (1.5 Mbit/s), and a maximum length of 5 meters with devices operating at Full Speed (12 Mbit/s).[citation needed]  
USB 2.0 provides for a maximum cable length of 5 meters for devices running at Hi Speed (480 Mbit/s). The primary reason for this limit is the maximum allowed round-trip delay of about 1.5 μs. If USB host commands are unanswered by the USB device within the allowed time, the host considers the command lost. When adding USB device response time, delays from the maximum number of hubs added to the delays from connecting cables, the maximum acceptable delay per cable amounts to 26 ns.[44] The USB 2.0 specification requires cable delay to be less than 5.2 ns per meter (192,000 km/s, which is close to the maximum achievable transmission speed for standard copper wire).  
The USB 3.0 standard does not directly specify a maximum cable length, requiring only that all cables meet an electrical specification: for copper cabling with AWG 26 wires the maximum practical length is 3 meters (9.8 ft)."  
 
 
To stay within a comfortable margin, therefore, 2 meter length should present little problem running on USB 2.0 or 3.0 !  
 
Would test it out with different lengths.  
 
limage
13-01-25
14:29:07
回覆 (715): CAS studies
This is rather puzzling. I had some of the music files down-loaded from overseas whose signal bits had to travel across the Pacific and yet in terms of sonic quality, they are no different from the CDs I have.  
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that's a completely different issue.for download what you are interested is the content ie data integrity. that is never the issue. but when your pc is connected thru usb to your dac, it becomes more than data problem. it is part of an electrical system.  
 
What then makes the difference for longer USB cables? Could it be RF interference? Would a shielded cable be better?  
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to start with USB spec has limitation of the cable length. it is designed for long distance connection.
drwkng
13-01-25
13:05:53
回覆 (714): CAS studies
 
 
USB cannot be too long, it influence significantly the sound quality. Our testing is about 1-1.2M max  
_______________________________________________  
 
 
This is rather puzzling. I had some of the music files down-loaded from overseas whose signal bits had to travel across the Pacific and yet in terms of sonic quality, they are no different from the CDs I have.  
 
What then makes the difference for longer USB cables? Could it be RF interference? Would a shielded cable be better?  
 
I have an EMT tri-axial cable (double shielded) connecting the CD player to the DAC and this cable does have a slight edge over ordinary shielded cables.  
 
 
limage
13-01-25
12:24:34
回覆 (713): DSD DAC
When the time comes, please allow me to show you where the CAS is up to  
___________________  
 
Good morning, Limage,  
 
My million thanks for your invitation. I buy SACD / CD software and machines today but digital music still remain as a compromise to me.  
 
All music from digital sound? ...... glad to hear this one day and truly a judgement day I have been longing for.  
dkyyu
13-01-25
10:15:08
回覆 (712): DSD DAC
......we can make sure the CAS performance is close!
ackcheng
13-01-25
00:18:05
回覆 (711): DSD DAC
"That's a bit of headache for me. My usb digital cable has to run 2 meters unless I swap places with the LP turntable.. "  
 
Oh no! Your CAS will take the place of your LP turntable!!!!!!  
 
"Most CAS users just don't have good recordings to start with"  
 
That's why you should rip your LP so we can make sure the CAS close!
ackcheng
13-01-25
00:10:29
回覆 (710): DSD DAC
 
 
Dominic,  
 
Yes you have a very good point, but no, we are not dealing here with philistines. They are audio freaks, an idiotic species, hopelessly overwhelmed with cost-no-concern ambitions.  
 
 
limage
13-01-24
16:49:49
回覆 (709): DSD DAC
But CAS is extremely inexpensive that achieve level of performance exceeded most inexpensive analogue. Once we put $ factor into it, it's no longer the same comparison.
Cadiver
13-01-24
16:41:10
回覆 (708): DSD DAC
 
 
Dennis,  
 
When the time comes, please allow me to show you where the CAS is up to. No, it's not going to blow away the LP with nose in the air but it certainly gives you all the music you crave.  
 
The blame lies not with the digital technology but with the original recording. Most CAS users just don't have good recordings to start with!  
 
 
limage
13-01-24
16:29:09
回覆 (707): DSD DAC
I recommend Kuro demonstrate his Legato, i was amazed how good 44.1 red book CD could sound via that. Ops, I just put him on the spot .....
Cadiver
13-01-24
15:55:30
回覆 (706): DSD DAC
 
 
Quite to my surprise, I've found DSD could hardly beat 24 /96 with the same piece of recording. It looks going extreme on one direction may not prove worthwhile.  
 
 
limage
13-01-24
15:38:48
回覆 (705): DSD DAC
 
What about optical fiber, would it be a good choice?  
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there is no optical input for your dac. you can try some optical repeater for usb but i don't know how good it is.and they are not cheap for usb 2.0. of course it would be nice to have a lan connection to your dac but that is not going to happen.
drwkng
13-01-24
15:29:16
回覆 (704): DSD DAC
That's mdlover's business! My job is to make sure it sounds no worse than the LP  
______________________________________________________  
 
 
DSD no worse than LP (is). I guess we can only dream of it unless we are still using our grama 70's Sansui turntable + cartridge with heavy wow and flutter problem..  
 
I bet even the latest DXD, the futuristic DYD or DZD can hardly close to this requirement.  
 
dkyyu
13-01-24
15:21:44
回覆 (704): DSD DAC
 
 
That's a bit of headache for me. My usb digital cable has to run 2 meters unless I swap places with the LP turntable. I hate to do that because the turntable has taken me 2 weeks to fine-tune.  
 
What about optical fiber, would it be a good choice?  
 
 
limage
13-01-24
15:13:38
回覆 (703): DSD DAC
USB cannot be too long, it influence significantly the sound quality. Our testing is about 1-1.2M max..
accphoto
13-01-24
15:00:59
回覆 (702): DSD DAC
 
 
but you need to turn off a lot of stuff  
_____________________________  
 
 
That's mdlover's business! My job is to make sure it sounds no worse than the LP.  
 
I hate to add "is" after LP. To hell with grammar.  
 
 
limage
13-01-24
14:31:11
回覆 (701): DSD DAC
 
Well, I only use this pc for CAS exclusively, things cannot be any worse. That's the simple logic I have in mind.  
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rumours have it that it is better 7 but you need to turn off a lot of stuff otherwise it might studder druing playback. i also have 8 installed for my notebook.
drwkng
13-01-24
13:09:09
回覆 (700): DSD DAC
 
 
It's a pity that the pc comes with Window 8 (64) pre-installed, or else I would have opted for 7. I know how bad (or good) the seven is, but god knows how bad or flawed the 8 may turn out.  
 
Well, I only use this pc for CAS exclusively, things cannot be any worse. That's the simple logic I have in mind.  
 
limage
13-01-24
12:03:43
回覆 (699): DSD DAC
The HP is now running. It's as quiet as I could desire, except that Window 8 is truly a pain in the ass!  
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that's good news.
drwkng
13-01-24
11:42:47
回覆 (698): DSD DAC
 
 
The HP is now running. It's as quiet as I could desire, except that Window 8 is truly a pain in the ass!  
 
 
^__^
limage
13-01-23
22:25:55