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Old 30th April 2008, 09:45 AM   #491
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Quote:
Originally posted by jkeny
Oops, problem not solved - in Roxio there's an option to make a bootable disk - it defaults to display .img files - I change it to all files, select the ubuntustudio.iso downloaded & write disk - result is another drinks coaster - error msg when booting "missing operating system"
There must be loads of freeware out there that is capable of writing
DVD .iso files.

Under Linux you just right-click on the file and select burn to disc!
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Old 30th April 2008, 09:57 AM   #492
jkeny is offline jkeny  Ireland
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Ah, yes but this Windoze!!!!!!!!!
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Old 30th April 2008, 01:53 PM   #493
jkeny is offline jkeny  Ireland
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Got it this time - downloaded finalburner CD/DVD writing software - has option create ISO disk - it boots!

Have loaded Ubuntustudio on desktop - need to have a look at it tonight - it selected the partition size & created it when I chose "guided partition creation" - nice & easy.

Tonight, Need to load Amarok to listen to some music - & will try it with audio files on external disk connected by USB - then compare with playing same file from RAM.

Expecting great sounds based on my initial listen with the laptop trial Ubuntu which wasn't a full install but an easy install version - can't remember the name of it but it doesn't partition the disk just creates a large folder in the NTFS windows disk & gives dual boot options.

Even so it sounded much better than I experienced from my laptop before!

Soundcheck, in terms of maximising sound could you rate in some sort of sonic order the OS tweaks!

Have you tried powering the disk from an external source? I have a SMPS 12V & 5V unit for powering external disks - I wonder could I use this to power the internal disk thereby taking some of the disk access PS spikes off the main PS?
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Old 30th April 2008, 02:45 PM   #494
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Jkenny:
Congratulations, that you managed.


My setup:

My disc is not running. My GPU is off. My screen is off. ....
I got 16 wakeups per second. ( As mentioned earlier Ustudio runs with approx. 460/s)

And to get real great results all my OS tweak are needed.
Otherwise lots of information are lost in space.
(Of course the gain of quality is depending on your digital chain - some show more some less improvements)

Beside more details, more air, .... the typical jitter reduction effects - The better it gets the lower the low end gets.

Start the easy way by copying one file to /dev/shm within a terminal and then play it with Amarok. Make sure you use the raw-device as output. Something like hw0 or hw1.


Would be interesting to see how your XR55 will mirror these OS differences. That'll be a nice indication of XR55 jitter supression capabilities.

Cheers
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Old 30th April 2008, 02:51 PM   #495
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Not freeware but not expensive too.

Quote:
Originally posted by soundcheck


There must be loads of freeware out there that is capable of writing
DVD .iso files.


Isomaster
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Old 30th April 2008, 03:26 PM   #496
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Thanks Soundcheck,
I will commence the experimentation!

Yes, it will be interesting to hear the XR57's response to front end changes!

I have already reported that 2 channel HDMI sounds much better than 2 channel SPDIF from an Oppo 980H universal DVD player into the XR57

There are many reasons why this could be:
- differences in implementation circuitry between HDMI & SPDIF in Oppo - or in XR57 (indeed XR57 seems to use pulse tranformers for HDMI - based on the schematic - i can't see these as the pcb area is covered by a copper shield, whereas SPDIF implementation does not use pulse trafo)
- Could be a reduction in jitter inherent in the HDMI protocol?
- who knows

Edit: There's always another question after posting, isn't there?
Soundcheck, are all your tweaks in the Wiki or do I need to read through this thread?
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Old 30th April 2008, 03:58 PM   #497
troystg is online now troystg  United States
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Quote:
Originally posted by jkeny
Ah, yes but this Windoze!!!!!!!!!
http://isorecorder.alexfeinman.com/isorecorder.htm
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Old 30th April 2008, 04:21 PM   #498
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Quote:
Originally posted by jkeny


Soundcheck, are all your tweaks in the Wiki or do I need to read through this thread?
Actually the Wiki is to a great extent, especially the kernel hacking sections, out of date. The basics (RAMDISK, XMMS realtime asf) though are still valid.

I promised to update it as soon as Hardy is available.

But - I'll be gone now for the next two weeks. I won't manage to fix it until end of May.
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Old 30th April 2008, 05:18 PM   #499
jkeny is offline jkeny  Ireland
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I looked at printing out this thread but it totals 221 pages!!!!!!

Anywhere there is a condensed version?
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Old 1st May 2008, 07:39 AM   #500
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Quote:
Originally posted by jkeny
I looked at printing out this thread but it totals 221 pages!!!!!!

Anywhere there is a condensed version?
This is exactly why I started up the Wiki.
There are so many interesting discussions hidden in a lengthy thread
that just get lost. Beside that things earlier discussed are outdated or repeated several times. A Wiki should have IMO always up2date
information. I know it's hard to maintain and means quite some extra
effort.

I would like to see other people, e.g. you and your Panasonic XR55 Tweaking thread to gather all findings and write it down in a Wiki.
It would be very nice if some people would start taking some effort.

I would like to see that the Forum-Admins start thinking about a more
sophisticated Wiki structure. The current one is really annoying. Nobody
is using it. Guess Why?
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