Triode's USB 24/192 plug in - sound quality impressions

[guidof]

No consequences other than that - I am interested though if other settings with the same period time but smaller total buffer give any difference in your mind?

Thanks. Will check it out and report back.

Guido F.

[cfraser]

^ I checked SBGK's 999.../4 buffer size, as he originally posted it, and the "Large" buffer size option. With EDO 0.6. The debug output results for both are identical to each other and to what you showed in post #54.

I am still running with 0.6 and SBGK's very large buffer size spec. Haven't changed it in more than a week, almost afraid to. I haven't tried comparing sonic results with different buffer sizes for either EDO 0.6 or 0.7.

[SBGK]

changing the device in the fab4.lua file does have an effect on the sound, think you are only going to appreciate that if you try it yourself.

setting it to be the same device as the usb device in the EDO.lua file gives a fuller sound than with it at default.

don't know why, but there is a definate effect, just as there is a change to the sound when setting the loadpriority of the EDO lua files.

[SBGK]

As I posted above http://forums.slimdevices.com/showth...l=1#post705325 this value is totally irrelevant when EDO is used - it will have no impact on sound quality.



I assume you are doing this after the box has booted and the usb device is attached? This is too late if your device is already attached - the index are assigned as linux boots.

Also this is the first usb card so I think it will use 0 from this. If you do this and then turn your usb device off and on you will find that the usb driver is unable create a card with index 0 and so fails:

cannot find the slot for index 0 (range 0-3), error: -16
cannot create card instance 0
snd-usb-audio: probe of 1-1.1:1.1 failed with error -5

In summary - none of this will have an impact on sound quality.

I really suggest you read the linux sources and understand what you are changing before you claim it impacts the sound quality. Almost everything suggested recently has no chance of impacting sound quality and is the potential consequence of expectation bias...

agree that the index change is probably expectation bias, but the other changes such as buffer sizes, fab4.lua setting etc have a definite effect in my system.

[SBGK]

I'm confused, which is untrue? The fact the the vlink 192 isn't galvanized isolated on the input or that there are others on this forum that just repeat what you say?

where's the love Jeff ?

[SBGK]

for anyone interested in jplay, there is a long thread at hydrogenaudio.org. If one is not in the mood to read the thread, the short takeaway is that "jplay" seems to be smoke and mirrors....

http://www.hydrogenaudio.org/forums/...howtopic=92856

think the frustrating thing about Jplay is that it drops out now and again and also sounds a bit processed whereas the Touch sounds natural.

[SBGK]

Triode thank you for your sterling efforts to provide something tangible and useful namely usb and 192 output capability

I'm afraid that getting involved in any discussion about subjective improvements in this area is inevitably going to get you into intractable exchanges from beyond the frontiers of reason. This forum has already seen the rise and fall of certain cults with similar leadership

Why would anyone want to use a usb to spdif converter from a device with S/PDIF? If you wish to retain your sanity I would recommend liberal use of the ignore button. Do not attempt to get into a pissing competition with a skunk.

Or to put it another way: "Bad Company is like a disease/who lies with dogs shall rise with fleas"

adamdea, that was an amazing post, have you sobered up yet ?

[SBGK]

FYI, SBGK, runs an asynchronous USB to spdif converter that doesn't have galvanized isolation. Not sure why he went with the vlink 192 it doesn't really put him any further ahead than the spdif implementation on the touch itself.

The rest of his parrot crew might be running the same device.

I beg to differ. Me and my parrot crew have found significant benefits in having a usb/spdif convertor.

[SBGK]

Sorry - couldn't resist. A simple will suffice as a sign of full agreement with your comments.

Bob

that's just pathetic, grow up.

[Triode]

agree that the index change is probably expectation bias, but the other changes such as buffer sizes, fab4.lua setting etc have a definite effect in my system.

Changing buffer size where the actual buffer size used changes could easily have an effect. Changing it beyond the point where it no long changes the actual buffer sizes will not.

As said before changing loadPriority (unless you set it so EDO is loaded later) and settings in SqueezeboxFab4.lua which are not used by EDO will not have an effect and is at best expectation bias.