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Ultimate Audio Playback / Chatter and forum related stuff / Re: Back to Basics - Noise and earthing is REALLY important
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on: September 03, 2013, 12:05:26 pm
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Hi Paul,
I use a preamp in my system and yes, I can hear some hum when I open the volume up (or should I say "reduce the attenuation").
I am thinking about a power conditioner to help me in this, but for the moment I am trying to identify the source of this noise...
Alain
Alain, Just thinking about your remarks. The hum comes when you decrease attennuation, so that will be hum on the signal side. If you want to know how silent your amp is, just short circuit the INPUTS (signal direct to ground). It probably is very silent. The DAC is probably also very silent if you would have the means to establish that. So I think a line filter will solve a non existent problem. I recognise this hum phenomenon, and it boils down to proper earthing, good shielded cabling and positioning of the components (no transformers or powercables next to signal cables etc). Regards, Coen Hi Coen, I will try to do some tests with these suggestions in mind. If I was to answer know, I would probably "flood" Paul's thread with "newbies" questions, so I prefer to postpone my answer. I already have a thread about my concerns ( http://www.phasure.com/index.php?topic=2690.0), even if I did that much too early (and in a clumsy fashion). Your suggestions are noted though and I will certainly appreciate your input when my working area will be better organized. And I sure hope this will happen soon Thanks and regards, Alain
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680
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Ultimate Audio Playback / Playback Tweaks and Source related subjects / Re: Batch file to use with Imdisk (ramdrive)
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on: September 03, 2013, 02:12:12 am
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Yes, that is the way I did it finally, but then I ran into another problem... The window showing the batch file execution was staying on the desktop... So I looked and found the "START" command. START A:\xxhighend-09-a9\xxhighend.exe I put it at the end of the batch file and all is good Now I wonder why I need to connect to the PC for it to really start... Maybe putting it in the public startup menu would do the trick ? Alain Edit: In fact it is logical to start only when the user access the PC, but I will do a few other tests to see with Public (Default User)... Edit2: It does not change a thing to put the batch file in Public (Default User), except maybe it will start when the first user of the Widows session logs in...
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681
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Ultimate Audio Playback / Playback Tweaks and Source related subjects / Re: Batch file to use with Imdisk (ramdrive)
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on: September 03, 2013, 01:58:18 am
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Hi Anthony, I was puzzled at first to find the startup menu, to finally realize that it was available through the Explorer 7 we use with XXHE But then I was stuck with another problem: How to determine the order of execution when Windows starts... IOW, specify that the ramdrive batch file needs to start first, then after its completion, then XXHE can start ? I found a solution, but how did you do it ? Regards, Alain
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682
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Ultimate Audio Playback / Playback Tweaks and Source related subjects / Re: Batch file to use with Imdisk (ramdrive)
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on: September 01, 2013, 02:20:55 pm
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Hi Alain, rem Creation of the "A:\" drive for XXHE and XXData ramdisk rem Replace the number "512" in the "-s 512m" with a lower or higher value if desired rem "512m" means 512MB of ramdisk. rem if you prefer to have a bigger XXHE drive, use 2g (2GB) instead IMDISK -a -m A: -s 512m -o hd,rem -p "/fs:exfat /q /a:512 /y" Strangely enough this part is dead wrong. You say "replace the 512 with a higher or lower number if desired. This is odd, because the Tutorial is all about that. Now the default will work out as wrong as it just is. So pleace replace that with 2G at least. Now people may run into too few memory problems. But that is better than letting things go wrong unnoticed. Do notice that not many people will be able to fuss around with .bat files. So they will start using it as it is, at least at first (and leave it be when it seems to work, which at first always is so ...). Peter I wrongly assumed here... I will change it and will post as soon as I can. Alain
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685
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Ultimate Audio Playback / Playback Tweaks and Source related subjects / Re: Batch file to use with Imdisk (ramdrive)
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on: August 31, 2013, 04:52:42 pm
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Oh... And I am not always in front of my PC It could take time for me to answer questions. I believe Peter will monitor this thread from time to time, but I hope it will not put a burden on him... I have been a programmer in another life, so I can do a few things, but while I did this for me first and now hope it could help our community, I will count on you to help me to resolve the different problems that could occur. So be patient please And of course, Peter will have the last word Regards, Alain
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686
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Ultimate Audio Playback / Playback Tweaks and Source related subjects / Batch file to use with Imdisk (ramdrive) part 3
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on: August 31, 2013, 04:48:32 pm
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Now some notes...
- The more you increase the capacity of your ramdisk(s), the less RAM you have available for the OS and the XXHE processes... It is a trade-off... - Peter's post in another thread really has to be read to understand that what I wrote is not invariable forever. There will be modifications to come, like what Peter wrote about XXdata and that I am unsure of... If Peter mentions that XXdata should not be copied, then you can remove the following line from the batch file: XCOPY %XXDRIVE%:\XXdata A:\XXdata\ /E /Q /Y XXdata will not be copied, but you will then need to specify "C:\XXdata" in XXHE settings (the physical XXHighEnd that sits on your hard drive, not the one in the ramdrive). - You need to specify the playback drive. Notice that I have taken the liberty to create a folder in the playback drive. It should be written like this: "B:\xxdrive\" - You should ensure that the "Copy to xx-drive by standard" is turned OFF. - If you want to modify something permanently, I suggest that you do so with the physical XXHE, then reboot the computer. This will prevent unwanted error messages... - If you modify the batch file and want to restart it, you should reboot your system first - Of course, it is necessary to execute the batch file each time you reboot (for the moment). When you reboot, the ramdrive(s) disappear since RAM if emptied from its contents each time. - 2013/09/02: After doing some tests, I advice to define your ramdrives in Gigabytes (1g, 2g, 3g, etc) instead of Megabytes (MB). Some values work, some others don't. If this happens, a windows will pop and ask to format a drive, confirming something is not right.
You can of course create 2 shortcuts: - One that points on the batch file - One that points on the copied (in ramdrive) XXHighEnd.exe file the first time. Of course, to do this, you need at least the first time to execute the batch file (to create this shortcut)...
I should point out that if something seems to be wrong and you are unsure it could be about the ramdrive, I would suggest that you reboot and try to re create this situation with the physical XXHE drive. This will help separate ramdrive related situations with situations that would otherwise not happen...
Remember to read what Peter posted prior to this. If there are contradictions, please report them. I did this post quite fast and will modify it with fellows comments, suggestions and corrections.
Regards,
Alain
2013/09/03: for the moment the window that appears when the batch file is executing displays a lot of lines (quite rapidly), but I will make it more "silent" soon (will display a lot less) and maybe into a file (for support).
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687
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Ultimate Audio Playback / Playback Tweaks and Source related subjects / Batch file to use with Imdisk (ramdrive) part 2
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on: August 31, 2013, 03:53:10 pm
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Now the printing... (Shown here is the revised version 2013/09/03)
(start of the batch file) -------------------------------- @ECHO OFF rem Creation of the "B:\" drive for playback ramdisk rem Replace the number "2" in the "-s 2g" with a lower or higher value if desired rem "2g" means 2GB of ramdisk IMDISK -a -m B: -s 2g -o hd,rem -p "/fs:exfat /q /A:2m /y"
rem Creation of the folder "xxplay" in playback ramdisk drive MD B:\xxplay
rem remove the word "REM" from the following line if you do not want any ramdisk for XXHE rem EXIT
rem Creation of the "A:\" drive for XXHE and XXData ramdisk rem After the "-s ", what follows is the size of the ramdisk rem "m" after a number means amount of MB (Megabytes) of ramdisk rem "g" after a number means amount of GB (Gigabytes) of ramdisk IMDISK -a -m A: -s 3g -o hd,rem -p "/fs:exfat /q /a:512 /y"
rem -- At the right of the "=" in the following lines: rem -- Specify the source drive where XXHE is located (JUST a LETTER) SET XXDRIVE=C rem -- Specify the XXHE directory to copy FROM (no "\" to begin or end) SET XXHE=XXHighEnd-09-z9
rem Copying the content of physical XXHighEnd and XXData in ramdrive XCOPY %XXDRIVE%:\%XXHE% A:\%XXHE%\ /E /Q /Y XCOPY %XXDRIVE%:\XXdata A:\XXdata\ /E /Q /Y
START A:\%XXHE%\XXHighEnd.exe (end of the batch file) ---------------------------------
This batch file creates 2 ramdrives: - One for the playback (drive B:) = 2GB of ramdrive space - One for XXHE and XXData (drive A:) = 3GB of ramdrive space
I have put emphasis on 5 parameters:
A) There are 2 lines that begin with "IMDISK". The bold parameter indicate the size of the ramdrive. "2g" means 2GB "3g" means 3GB
B) REM EXIT If someone does not want to go further than creating a ramdrive for the playback drive, just remove the word "REM ". This will simply exit the batch file without doing what follows that line.
C) The paremeters in RED colour indicate where you specify the information needed to copy XXHE from your hard drive into ramdisk. "C" is the letter of the hard drive where XXHighEnd and XXdata are located. If "C" is not the correct letter of the drive, you replace it with the right hard drive letter (D, E, R, Z...). Only one letter of course ! "XXHighEnd-09-z9" points to the directory of that hard drive that will be copied into ramdrive. For the moment, only this exact name will be copied into ramdrive. For the moment, I will leave this suggestion: do not allow spaces in the title of the folder... "XXHE version 9" would not work, but "XXHEversion9" will...
2013/09/03: Implemented from Anthony's idea about starting XXHE at user's login, the following line has been added to allow the start of XXHE from the batch file: START A:\%XXHE%\XXHighEnd.exe If you don not want this line to execute, simply insert a "rem" at the beginning of this line: rem START A:\%XXHE%\XXHighEnd.exe
Alain Edit: Every line that begins with "rem" is a comment line. It does nothing. Edit2: Please read the 3rd post to complete these informations.
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688
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Ultimate Audio Playback / Playback Tweaks and Source related subjects / Batch file to use with Imdisk (ramdrive)
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on: August 31, 2013, 03:40:28 pm
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Hi,
This is the batch file I have written to allow 2 ramdrives. As Peter mentionned, my scope was quite too narrow and it could bring inconveniences as it could bring benefits.
This is assuming that one has installed Imdisk prior to anything that will follow...
I will do 3 things: - Post the batch file as an attachment - Print it in the next post with some precisions. It will be possible to "copy" and "paste" it as desired. - Post my recommendations, adjusted to Peter's warnings (I hope).
First the attachment...
As you will see when unzipped, it does not carry the right extension. You need to remove the "NEW" from the ".batNEW" to have it workable. I did that to allow me to send it through email, since it was blocked...
Alain (Date format is yyyy/mm/dd) 2013/09/02: The following has been changed in the batch file: - Replaced "512m" (512MB) to "3g" (3GB) for XXHE and XXdata drive. - The compressed batch file is XXRamDrv20130902.zip
2013/09/03:: - Added a line that starts XXHE (from the ramdrive) - The compressed batch file is XXRamDrv20130903.zip
NOTE: for the moment, I leave all the versions as they evolve, but this will surely change.
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