Want to read Slashdot from your mobile device? Point it at m.slashdot.org and keep reading!


Forgot your password?

Comment Response from CDParanoia author (Score 5, Insightful) 330

> Stop using cdparanoia - it isn't very good, at all. It tests poorly, we're sad to say.

Really! As the author, I'd love to hear hard specifics. or maybe a bug report.

> You want to use Secure Mode with NO C2, accurate stream, disable cache.

You can't disable the cache on a SATA/PATA ATAPI drive. The whole point of cdparanoia's extensive cache analysis is to figure out a way to defeat the cache because it can't be turned off. There is no FUA bit for optical drives in ATA or MMC.

The 'accurate stream' bit is similarly useless (every manufacturer interprets it differently) and C2 information is similarly untrustworthy.

Plextors are not recommended for error free or fast ripping. They try to implement their own paranoia-like retry algorithm in firmware and do a rather bad job about it. They also lie about error correcting information (you do not get raw data, you get what the drive thinks it has successfully reconstructed). Plextors often look OK on pristine disks, but if you hit a bit error (like on just about any burned disk), you don't know what it's going to do. Plextors are, overall, among the more troublesome drives _unless_ you're using a ripper that does no retry checking (ie, NOT cdparanoia and NOT EAC). If you use iTunes, you want a Plextor. Otherwise, avoid them.

Comment Re:General Consensus (Score 2) 330

That was true ~15 years ago. Since then, Plextor's firmware gets along very badly with the rippers that try to be frame accurate, because Plextor tries to implement a much lighter-weight more error prone version of the same algo on the drive. The drive still doesn't do a realiable job, and it seriously mucks up the ripper.

Comment Re:who records 'expensive movies' at 48k? (Score 1) 255

Regarding hte first point, that 120dB broadband noise figure is giving you at least 140dB of SFDR, probably much better, and the depth of any critical band is going to be even better yet. Even 16 bit data with a decent noise shaper is going to be 120dB deep in the 2-4kHz critical bands. (all of which doesn't disagree with anything you said of course)

Comment Re:An exercise for the reader (Score 1) 255

Oh! I remember this one :-) I'll be honest here-- this particular debate is outside my core expertise. I have enough background to say "this is all plausible" (I'm an electrical engineer after all), and I've discussed it in person with an author of a few papers on the same subject, but I'm only a dilletante when it comes to building amps.

>I guess my point is that it's too easy to make an error when seeing an "interesting idea and no data" and dismissing it.

I agree with you completely. Interesting ideas should be published; no paper is born in the state of being independently verified. I object to those who take these papers as evidence to support a position when no such validation has taken place. Thinking aloud is useful, but thinking aloud != hard data.

Comment Re:An exercise for the reader (Score 1) 255

Well, for the record, I've not been rejected, but I've only published within AES once.

It's not an attack, it's more a statement of truth. The AES publishes all sorts of things. Papers with interesting ideas and no data (eg, the J. Dunn 'equiripple filters cause preecho' paper, which presents a fascinating insight, even if it doesn't work out in practice), papers with data that are effectively WTFLOL (the famous Oohashi MRI paper) and papers that are more careful controlled studies. It runs the whole gamut on both sides, just as I said.

Do you deny that a substantial portion of the membership, including many elders of the group, are not 'bigger numbers are always audibly better' audiophiles? It was Andy Moorer himself who, with no hard data, kicked off the insane sampling rate race that now has some hardcore audiophiles wondering if 192kHz is enough.. they're holding out for 384kHz!

Is the AES a worthless cesspool? Oh heck no. Never said that. But treating its publications as more than a good industry rag (where it's sometimes hard to tell the research from the advertisements).. or perhaps an advanced debating club... is probably not a very good idea. Treating any one AES paper as gospel is just insane.

Comment An exercise for the reader (Score 1) 255

Assuming from the press release that this is an apodizing filter that 'removes' Gibbs effect preringning... how many peer reviewed studies can we compile here below my post that indicate anyone can hear these 'artifacts'?

Ready, on your marks, go!

Be careful of publications from the businesses that are pushing these filters (eg, Meridian audio / J. Robert Stuart). AES papers count only if the results have been independently reproduced (the AES is in the business of publishing 'interesting ideas', and the papers run the gamut of careful science to raving lunacy).

"I listened and _totally_ heard a rounder, fuller sound with better staging" is not data. It's what audiophiles have said of every nonsense breakthrough of the past 40 years. The one true breakthrough, digital audio, they generally still roundly pan and feel the need to 'fix' by sprinkling fertilizer all over it. It's like holy penguin pee, only it smells bad.

'Proofs' and explanations are nice, I indulge in them myself, but the blind listening data is the final authority.

Comment So long and thanks for all the fish (Score 1) 320

We had about six years where Linux wasn't the unsupported red-headed stepchild of the Web. It was nice while it lasted.

Firefox is losing market share, so it's understandable that they want to avoid the following: "We notice you have an unsupported browser. Please download Safari or IE to view this content". That wouldn't really serve anyone's interests.

Unfortunately, this just pushes the problem onto Linux as a whole: "We notice you have an unsupported OS. Please use Mac OS or Windows to legally view this content."

Comment Re:The article writer is a deaf idiot (Score 1) 841

If you turn the samples up until you can hear the noise floor, you can easily hear the difference. Of course, at those levels, a full range signal would launch your speaker cones out of the cabinets. So is that a fair comparison of 16 vs 24?

There are any number of ways to cheat an ABX test to your own satisfaction. If the goal is to delude yourself, you'll probably succeed.

Slashdot Top Deals

ASCII a stupid question, you get an EBCDIC answer.