Originally posted by Zhang Fei:
Paranoid raised a few points that I'm not to sure about, mainly that mini-discs are vulnerable to magnetic fields.
The laser reads but does not write, but the "read" is through a screen that is magnetically altered. Check your sources again. Better yet, send me a a MD and I'll use my bulk tape eraser and I'll show you it *is* vulnerable. To quote:
"Recordable MiniDiscs use a variation on conventional magneto- optical methods that Sony calls "Magnetic Field Modulation", in which data is recorded using a 4.5mW semiconductor laser together with a magnetic head. As the disc sweeps past the laser, a tiny area on the MD's magnetic recording layer is heated to its Curie temperature* while the field of the magnetic head in contact with the other side of the disc is switched back and forth to write a data pattern. When the area the head has magnetized moves away from the laser spot it cools below the Curie point to become ``cast'' in a string of N and S magnetized regions on the disc, spaced 60 millionths of a centimeter apart, and corresponding to the stream of bits being recorded. Playback is accomplished using the same laser at about 1/10th power, taking advantage of the Faraday effect, in which the polarization angle of reflected laser light is affected by whether it was reflected from an N or S magnetized region. The MD optics detect these polarization differences to reconstruct the recorded bit stream. (*The Curie temperature is the point at which a material can be magnetized by a very weak field. For the MD's recording layer which is a compound of Terbium, Iron, and Cobalt, this temperature is 180C)"
http://www.minidisc.org/part_MD_technology.html
It's not a tape, it's a mini cd and sould be no more vulnerable than a regular cd or one you burned at home. Also, I haven't checked prices on CD-RW's lately, but mds are in the sub-2 dollar category, depending on where you live and who you buy from.
I regulary buy CD-R's for 12 to 20 cents a piece. I pick up R/W's for anywhere from 75 cents to $1.15. Economies of scale may differ from where you live at the moment. I know that MD is tremendously popular in Japan and the appeal in the USA in gaining.
Sony's come out with the md-lp which boosts the time to 320 minutes from an 80 minute disc. As far as sound quality, I've been unimpressed with mp3. Downloaded some songs off napster, liked them so I bought the disc. The difference seemed like the difference between tape and cd. Most people have a hard time detecting the difference in sound quality between md and cd.
I can tell the difference but regarding compression, you know MD uses ATRAC compression which deletes music data whose frequencies range from below 20Hz and higher than 20kHz which a lot of people say is beyond the normal range of hearing for adults.
And as far as 10 hours of music on one cd - sounds good, but it sounds pretty damn compressed and possibly pretty degraded too.
Actually using variable bitrate at the lowest level of compression, I still am able to place 10 hours of music on a single 650 mb disc. Now if i use the highest degree of compression, then one can put far more than 10 hours of music on a single 650.
Could be just talkin out my ass, though.
No comment
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"How sharper than a serpent's tooth it is to have a thankless child.", King Lear, Act I, Scene 4.
[This message has been edited by paranoid9999 (edited 05-29-2001).]
Originally posted by Size15s:
Some other advice:
Get yourself the best pair of headphones you can. I use the top of the line Sony in-ear ones.
I prefer Grado SR-60's for about $70. Not cool looking in the conventional sense but easy to drive and produce far better sound than ANY sony earbud.
http://www.gradolabs.com/frameset_main.htm
If you must have earbuds try the Etymotics but then you'd be spending a lot of money.
http://www.etymotic.com/
Also, to record from an analogue source, get yourself a nice gold plated cable. Especially if you want to play the MD back through a HiFi...
For a analog signal, I prefer a cable that uses silver conductors instead of copper. Perhaps Kimber KCAG
http://www.kimber.com/kcag.htm
In my opinion, MD & MP3 only really show the compression when played on a good HiFi. Listening to a high quality CD recording or DTS DVD beforehand can often show up the lack of "life", "heart" and "soul" that compression usually removes or destroys.
Al
Yes, I agree, that's what my PSB Stratus Golds, Aragon 4004/18k and D2A with IPS is for
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"How sharper than a serpent's tooth it is to have a thankless child.", King Lear, Act I, Scene 4.
[This message has been edited by paranoid9999 (edited 05-28-2001).]
<font face="Verdana, Arial" size="2">Originally posted by KillerMan:
Paranoid and ZF:
Thanks for the guidance thus far. I don't have a burner, but friends do. However, the MD format allows me to use it as a portable "note taking machine." As ya'll stated, there are pros and cons to each format. Guess this just means more research
Thanks!
KM</font>
Originally posted by Size15s:
I'll check out thoughs other links. There's a cool pari from B&O. I don't know about the sound quality though. The reason I like the Sony ones is cos you can drive them hard and no one can tell you're playing at higher volumes.
If you like the Sony's then the Etymotics will better them in every aspect except price. Cheapest I've seen is $225 plus shipping. I'm sure that you will get quite uncomfortable before you run out of milliwatts. BTW, I recognize B & O as Bang & Olufsen but what is a "Pari"?
I've heard their mini system (Beosystem 2500) which sounded quite decent and their corded telephone is the only phone that I can discern anyone's voice, even when they try to disguise them!
I'm no expert in headphones though.
Hey, I'm no expert either...just an enthusiast.
I've over 200 MDs - and I've never had a "magnetic" problem. So many loudspeakers are shielded now-a-days anyway, and other sources don't really get too close to my MDs.
That's really quite nice. I think my point was that cd-'s are totally inert to magnetic forces. I guess vulnerable might be too strong a word. How 'bout "not impervious".
I would suggest you also buy a MD cleaner disc. Use it. Especially if you're out and about a lot...
Very good advice, since the MD has the little slide door to allow the read laser to access the disc. Like our beloved folders, lint tends to collect in those things.
Your MD is going to be used maybe more than enjoyed, which is different again from an Audiophile approach to music.
I will concede the point and say that MD's sound a little better than MP3 files (with the lowest level of compression) but most pop music isn't recorded that well to begin with. I once let a friend listen to Rebecca Pidgeon's rendition of "Spanish Harlem" and he asked me why most pop artists don't record at Chesky or Water Lily Acoustics. I told him that perhaps most pop artists do not care to have their voices so truthfully rendered. I had a friend who had $10,000 to spend on hifi and he took his favorite Depeche Mode CD and played them on Wilson WATT/Puppies and the 'Mode couldn't have sounded worse. Popped in the Jennifer Warnes "Famous Blue Raincoat" and it sounded much better. Go figure. Anyway, he ended up buying a home theater system.
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"How sharper than a serpent's tooth it is to have a thankless child.", King Lear, Act I, Scene 4.
[This message has been edited by paranoid9999 (edited 05-29-2001).]
<font face="Verdana, Arial" size="2">Originally posted by Zhang Fei:
Paranoid -
Yes, apparently I was mistaken about the magnetic part. Killerman - if you're constantly bombarded by magnetic tape erasers or magnetic fields that could erase or alter the md or somehow raise it to it's Curie temperature, then maybe it's not for you. In the likely event that none of this is going to happen to you or your md's, you will probably greatly enjoy the medium.
As for the rest ... ahh f*** it. Nevermind.
ZF</font>
<font face="Verdana, Arial" size="2">Originally posted by MikeD60:
CD-R and RW's (MP3-coded or otherwise)have a tendency to "erase" in direct sunlight as the photo-sensitive ink can be affected.
Neither MD nor MP3 are quality sources of audio.
[This message has been edited by MikeD60 (edited 05-29-2001).]</font>