SimontY said:Splitting hairs:
There's a difference between a "decent pc" and a fanless (with quietened hard disks) dedicated music server with network music interface. I'd have to do it well or not at all. And I fully intend to, just as soon as I can afford to!
Simon
Get a SqueezeBox. $250-300 gets the wireless networked player that plugs into your amp. You can connect an external DAC if you must. Very effective IR remote control. Completely silent. VF display that can be read across most rooms. Plays .flac files as well as lossy formats. Plays internet radio stations without a server running on PC.
Server software (slimserver) runs on almost any PC located in any room in your house (or across the web!) so PC fan noise is not an issue. Runs on Mac, Linux, and if you must, Windoze. Open source software with large community of developers. Remote control interface via web browser.
My 660 CD collection fits on a single, internal 250 GB HDD all in .flac with tags and album art. An external 250 GB HDD serves as backup (and portable party/loaner music source). I use an old tablet PC as a remote control which gives me a touch screen interface and displays cover art, disc and song title, artist, year, etc. I can also use it to browse the web for lyrics, etc. Using ubuntu linux on the server PC, it has NEVER crashed in more than a year of more or less continuous operation.
The CD is dead. I only hope windows will soon follow...
I_F
Hi, In reply to the what is changing when you make these modifications question.
What I can tell you is that the data itself is not changed, Prizm Sound did some investigation into this in the mid 90's. What they found was that the data was identical so all the 1s and 0s are correct.
What changes is the way the servo reads the disk. The servo in a CD player uses current in great big gulps and with the change to digital servos about 15 years ago this got much worse. The noise the servo introduces to the PSU then interacts with the the reconstructed clock and introduces jitter on the DAC clock reconstructing the audio samples.
Jitter levels of 150PS are audible. Systems with good linearity or 24bit playback even lower than this.
Other things that can cuase jitter are mechnical feedback from the spinning motor to the quartz crystal generating the clock and indeed the sound field in the room vibrating the crystal.
If anyone is paticullarly interested in this do a search on Julian Dunn on the web as he has done a significant amount of research into the effects of jitter and many of his papers are available free on the web. However this is extreemly technical stuff and the mathematics is complex.
Regards,
Andrew
What I can tell you is that the data itself is not changed, Prizm Sound did some investigation into this in the mid 90's. What they found was that the data was identical so all the 1s and 0s are correct.
What changes is the way the servo reads the disk. The servo in a CD player uses current in great big gulps and with the change to digital servos about 15 years ago this got much worse. The noise the servo introduces to the PSU then interacts with the the reconstructed clock and introduces jitter on the DAC clock reconstructing the audio samples.
Jitter levels of 150PS are audible. Systems with good linearity or 24bit playback even lower than this.
Other things that can cuase jitter are mechnical feedback from the spinning motor to the quartz crystal generating the clock and indeed the sound field in the room vibrating the crystal.
If anyone is paticullarly interested in this do a search on Julian Dunn on the web as he has done a significant amount of research into the effects of jitter and many of his papers are available free on the web. However this is extreemly technical stuff and the mathematics is complex.
Regards,
Andrew
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