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Maarten

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  1. Hi I assume you're on windows? Foobar2000 is my favourite player on windows. It integrates nicely with windows explorer: rightclick on a directory and you can add all music under that directory to its playlist. I like it much better than using music libraries. Cheers Maarten
  2. - ok, I'll give you there might be a few errors on pressed cds. However, compared to reading errors their number is completely negligable. - If you've got scratches on the cd, nothing is going to give you the same output as the master. The error correction on cd players is there to correct the odd bit of reading errors, not something major like scratches. If it were a data cd, the system would just tell you the disk is bad and refuse to read anything. That it tries to read the audio disk anyway and prevents your audio equipment and ears from overload (by interpolating instead of outputting garbage), that's great. I don't agree with Barry in calling that error "correction" though. Call me a nitpick if you wish. - If I have a bad rip of a audio cd, I can hear small (single bit?) errors. Using good drives and software, I don't get such errors. By the way, does it matter to you whether a change was purposefully created to test something or whether it was created by a reading error from disk? A flip of a single bit is still a flip of a single bit and effects you in the same way. 'Bit perfect' usually means the audio has not been changed to a different sample-rate, bit-depth etc. and does not have to do with (reading or other) errors. Conversion, especially to different sample rates, can produce smaller or larger distortions to the sound according to the algorithm used. How audible that is depends on your equipment and ears. I agree that in general folks are probably fretting too much about many things, but discussions can still be enlightening ;-).
  3. "Take 'bit perfect' for example. How many bits are there on a 750Mb CD? Lots and lots. CDs are pressed so thats not perfect to start with, error correction may be used that could introduce interploation which isnt strictly perfect. Then a 'bit error' occurs, how much of a time is that? 0.00001 of a second? I dont know. Could we really notice 1 bit error on a 70 minute recording? 10? 1000? 100000 strewn at random through the data?" I'm sorry, but that's quite a few misconceptions in there. Let me correct you - pressed cd's _are_ perfect. Ever tried installing software from a cd? Even if one bit is incorrect, the software will crash. Never happened to me. - error correction does _not_ introduce interpolation. It finds and corrects errors. Data on a cd is stored with many more bits than there is data. The extra bits are used to identify and correct errors. After correction, the drive returns the exact data that was recorded on it. Many of the patents for the original cd actually deal with this subject. Did you ever burn a document on a cd and get a different document back on reading? - Philips once produced a cd player which would display the amount of corrected errors. They thought this would be a cool cadget. Most players were returned as people thought they were faulty. Typically they'd show the number of corrected bits between 10-25% iirc. Of course, the actual output was exactly correct, after error correction. All cd players have to do so much error correction. - Whether one wrong bit is audible depends on where the bit is. If it's the most significant bit in a sample, yes, that's certainly audible. Just grab your favourite music editor (e.g. audacity) and edit one sample in a file. Maarten
  4. Hi, My planning at the moment is to get the bios replacement to work with the pc emulator over christmas. In the new year I will actually order the pc and, if everything works in the emulator, start building the softare for the actual system. I don't expect a working system before februari, march next year. I'll post here if I make major steps forward. Maarten
  5. I'm actually looking at something even more radical for my next music pc: I'll remove the bios as well. Using coreboot (www.coreboot.org) it is possible to replace the bios with a small (tiny) linux distribution. I should be able to get a small music player in there along with a home-brewn distro (as from www.linuxfromscratch.org). No fancy graphics, but fast and efficient, it will probably boot faster than my amplifier :-P At the moment I am just playing with this software in a pc emulator though, it's not something quite standard and straightforward to do...
  6. Hi, google for vlite (for vista; I believe there's a similar tool for xp). I have heard good things about this, no personal experiene as I have a couple things too important on my laptop now to mess with it (it's from work and the only one where I have windows). This tool allows you to create a new dvd from an original windows installation medium, but with only the components you actually choose to have installed. Much cleaner than removal after installation and windows should complain less as now it never knew about some things. Something else I am using nright now is an alternate shell, instead of explorer: bblean. This uses much less resources, although you might have to get used to the shell, it's really minimalistic. No idea if those things are what chris is talking about though Cheers Maarten
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