Just found this information:
http://72.14.253.104/search?q=cache:_I-BvCh6yTMJ:onno.vlsm.org/v11/onno-eng-1/network/the-indonesia-computer-network-status-report-04-1995.rtf+lutfi+itb&hl=en&gl=us&ct=clnk&cd=28&client=firefox-a
I did not remember my number is in the list as the sys-op many years ago! :-)
Sunday, January 28, 2007
Friday, January 26, 2007
Review on Sandisk's Sansa e280 MP3 Player
I got my player a few weeks ago after going through rigorous reviews posted by other users on the Internet. My decision to buy this one instead of iPod was mainly because Sansa is more open system than Apple's iPod. Also, I recalled that MaximumPC sometime ago had reviewed and made comparison between some audio formats and Real's Rhapsody audio format (*.rax) is superior than others, including Apple's AAC (*.m4p or *.m4a).
Another reason is that Rhapsody has monthly rental service plan, which allows you to listen to their files (yes, all of them which is millions of music files) on the go (on Sansa players) or through its Rhapsody software running on PC. They even allow us to indirectly transcode the files to non-DRM MP3 or WMA format. How, you may ask? It is by burning your purchased music files and then re-rip them to unprotected MP3 or WMA. The quality of this *.rax files are really good and the size is not bigger than average high quality MP3 encoded in VBR.
One thing I don't like from Sansa is the buttons on the front. The four buttons surrounding the rotating wheel are placed sunken (shallow) than the wheel hence make them harder to reach/to push.
Quality of the sound is average. Sometimes I hear some distortion, but not sure whether this is caused by the device itself or because the music was undersampled/bad encoder.
Will continue in more detail if time permits.
Another reason is that Rhapsody has monthly rental service plan, which allows you to listen to their files (yes, all of them which is millions of music files) on the go (on Sansa players) or through its Rhapsody software running on PC. They even allow us to indirectly transcode the files to non-DRM MP3 or WMA format. How, you may ask? It is by burning your purchased music files and then re-rip them to unprotected MP3 or WMA. The quality of this *.rax files are really good and the size is not bigger than average high quality MP3 encoded in VBR.
One thing I don't like from Sansa is the buttons on the front. The four buttons surrounding the rotating wheel are placed sunken (shallow) than the wheel hence make them harder to reach/to push.
Quality of the sound is average. Sometimes I hear some distortion, but not sure whether this is caused by the device itself or because the music was undersampled/bad encoder.
Will continue in more detail if time permits.
Tuesday, January 2, 2007
Comparing some Headsets
I was looking for a good and affordable headsets for to-be-mine Sandisk Sansa e280 (darn, 2 more days have to wait till it is delivered) MP3 player (will put a review on it later).
Upon searching on google, I landed on a site http://www.headphone.com that compares the 'really' technical comparisons (not just a sounds-like-a-geek-but-a-stupid reviews). The web gives a frequency response graphs, harmonic distortion graphs, isolation and impendances for the tested headsets (unfortunately, they did not test on Bose headsets).
Here I try to compare between Sennheiser's PX100, Sony CD3000, Apple's Ipod earbuds and KOSS KSC55:
Frequency Response
Harmonic Distortion Products
Isolation
Impedance
So How to pickup the best headset? The rules of thumb are:
Upon searching on google, I landed on a site http://www.headphone.com that compares the 'really' technical comparisons (not just a sounds-like-a-geek-but-a-stupid reviews). The web gives a frequency response graphs, harmonic distortion graphs, isolation and impendances for the tested headsets (unfortunately, they did not test on Bose headsets).
Here I try to compare between Sennheiser's PX100, Sony CD3000, Apple's Ipod earbuds and KOSS KSC55:
Frequency Response
Harmonic Distortion Products
Isolation
Impedance
So How to pickup the best headset? The rules of thumb are:
- Pick the headset with the flattest and widest frequency response
- With the lowest and flatest spikes in harmonic distortions
- Isolation; This is a measure of a headphone’s ability to isolate the listener from outside noise. The deepest notch for the noise frequency usually good ones.
Saturday, December 30, 2006
Recompiling my Linux
Somehow, my Xserver just hung everytime I browse some sites, especially the ones with script. That was one of the reasons I almost rebuilt all my Linux components from scratch. From kernel, XWindow, QT, KDE, DBUS, Apache and many others.
Compiling those libraries and applications are not always staright forward. Many of them are dependent each other (causing circular/loop dependencies). Others are out-of-date or too old hence would not compile with the latest GCC/kernel. I had to hand-fix them manually. You know it was not easy at all to fix these broken codes, but luckily I enjoyed it and learned a lot by doing it. Google is still my best tool to search missing components or how-tos.
Now, my machine had been running (almost) the latest libraries available at the time I wrote this blog. I also always enabled optimization with -mtune=pentium3 -msse. Also, if possible and available, I turned on POSIX threads as well. The kernel recognized my dual-processor chips as well, so I ran folding@home application and it showed (by 'top' tool) that the application uses one of the processor to do its very extensive biological chemistry computation.
I am still having problem making PHP run from Apache. Somehow it could not recognize/interpret PHP commands and just showed error. I will try again later if I have time. Oh, by the way, I could make the perl cgi work. It was just a configuration issue (fault from my side!).
I think I will take easy and relax now to concentrate more on my work, study and research (and perhaps pursuing my professional certifications). See you again in year 2007! (hopefully I still work on the same job).
Compiling those libraries and applications are not always staright forward. Many of them are dependent each other (causing circular/loop dependencies). Others are out-of-date or too old hence would not compile with the latest GCC/kernel. I had to hand-fix them manually. You know it was not easy at all to fix these broken codes, but luckily I enjoyed it and learned a lot by doing it. Google is still my best tool to search missing components or how-tos.
Now, my machine had been running (almost) the latest libraries available at the time I wrote this blog. I also always enabled optimization with -mtune=pentium3 -msse. Also, if possible and available, I turned on POSIX threads as well. The kernel recognized my dual-processor chips as well, so I ran folding@home application and it showed (by 'top' tool) that the application uses one of the processor to do its very extensive biological chemistry computation.
I am still having problem making PHP run from Apache. Somehow it could not recognize/interpret PHP commands and just showed error. I will try again later if I have time. Oh, by the way, I could make the perl cgi work. It was just a configuration issue (fault from my side!).
I think I will take easy and relax now to concentrate more on my work, study and research (and perhaps pursuing my professional certifications). See you again in year 2007! (hopefully I still work on the same job).
Saturday, November 18, 2006
Blue-Ray and HD-ROM War?
The drum has been beaten. Blue-ray capable game console from Sony called PlayStation 3 has been released to US market Nov 16. The high performance game console is equipped with Blue-Ray developed by Sony alliance. Will the same story of Betamax v.s VHS format be repeated? I don't think so.
First, the physical dimension of both discs are about the same. Secondly, it is digital era, whilst in Betamax-VHS war, there was only analog. In digital, signals are easire to manipulate, so there is not much difference in the encoding. Besides, some companies even have developed with Blue-Ray and HD-ROM capable drives.
The market will decide which one will win. But, unlike in Betamax-VHS case, the loser will not really lose and vice versa.
First, the physical dimension of both discs are about the same. Secondly, it is digital era, whilst in Betamax-VHS war, there was only analog. In digital, signals are easire to manipulate, so there is not much difference in the encoding. Besides, some companies even have developed with Blue-Ray and HD-ROM capable drives.
The market will decide which one will win. But, unlike in Betamax-VHS case, the loser will not really lose and vice versa.
Sunday, November 12, 2006
My New Linux Server
After awhile using my really-old PC (AMD K6-III) for running my personal web server, I finally replaced it with much better PC. I got this PC from trash bin/dumpster at my office (yep, it may sound crazy to some of you for a company to trash a still-good PC).
The PC is a Dell-branded "Dell Workstation 540T", a dual processor Pentium3 (Coppermine) workstation with 1 GB of RAM and a 32 GB SCSI HD. I scrapped and dismantled other PCs just to get other 2 SCSI HDs (about 15 GB each). I also moved ATPI HD (15 GB) and CD-RW (50x) from my old AMD-PC. So the total storage is 3 SCSI HDs (with total space about 80 GB space), 1 old DVD-ROM (it came with the Dell PC) and 1 CD-RW.
In the beginning of SUSE Linux installation (version 10.1), it ran in single-processor mode only. That was because the original SUSE from CD did not support SMP. After initial installation, I downloaded and compiled the latest stable Linux kernel (2.6.18.2) and enabled SMP as well as many other optimizations. I rebooted it, and...it recognized my second processor (the "top" tool showed "cpu0" and "cpu1", also the "pinguin" logo showed double telling me it was running dual processor).
The latest SUSE is really cool. A lot of improvements and fixes have been made and the GUI much stable. I also downloaded the NVIDIA driver and installed it (yes, the VGA card is NVIDIA Quadro5). Everything was running smoothly, except my apache server was somehow not able to read the folder (it showed "access denied"). After spending a few days to trace the root cause, I found out that the directory access was not granted to the folder. I then modified httpd.conf to allow apache to access the /srv/www/ folder.
I also recompiled many libraries (especially anything related to multimedia) with full optimizations. I rebuild XINE with DVDCSS enabled. Also installed MPG321, LAME, TWOLAME, etc.
After everything was done, I then configured GNUMP3D and ran it. It ran perfectly at port 8888, so now I can see all my MP3 file on the server. GNUMP3D is really cool, it displayed the files in a nice format (configurable) and when I click a file, my web browser spawn and play it automatically.
OK, enough for now. Will post it later.
The PC is a Dell-branded "Dell Workstation 540T", a dual processor Pentium3 (Coppermine) workstation with 1 GB of RAM and a 32 GB SCSI HD. I scrapped and dismantled other PCs just to get other 2 SCSI HDs (about 15 GB each). I also moved ATPI HD (15 GB) and CD-RW (50x) from my old AMD-PC. So the total storage is 3 SCSI HDs (with total space about 80 GB space), 1 old DVD-ROM (it came with the Dell PC) and 1 CD-RW.
In the beginning of SUSE Linux installation (version 10.1), it ran in single-processor mode only. That was because the original SUSE from CD did not support SMP. After initial installation, I downloaded and compiled the latest stable Linux kernel (2.6.18.2) and enabled SMP as well as many other optimizations. I rebooted it, and...it recognized my second processor (the "top" tool showed "cpu0" and "cpu1", also the "pinguin" logo showed double telling me it was running dual processor).
The latest SUSE is really cool. A lot of improvements and fixes have been made and the GUI much stable. I also downloaded the NVIDIA driver and installed it (yes, the VGA card is NVIDIA Quadro5). Everything was running smoothly, except my apache server was somehow not able to read the folder (it showed "access denied"). After spending a few days to trace the root cause, I found out that the directory access was not granted to the folder. I then modified httpd.conf to allow apache to access the /srv/www/ folder.
I also recompiled many libraries (especially anything related to multimedia) with full optimizations. I rebuild XINE with DVDCSS enabled. Also installed MPG321, LAME, TWOLAME, etc.
After everything was done, I then configured GNUMP3D and ran it. It ran perfectly at port 8888, so now I can see all my MP3 file on the server. GNUMP3D is really cool, it displayed the files in a nice format (configurable) and when I click a file, my web browser spawn and play it automatically.
OK, enough for now. Will post it later.
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