Half the information on CDs is analogue


I would like to argue that one of the reasons that some transports sound significantly better than others is because much of the information on a given CD is actually analogue (analog) information.
An excellent transport does not just read digital information: 1s and 0s (offs and ons); it must be sensitive enough to pick up the other information that has been stored as a physical property of the CD medium. This 'physical' information, like the tiny bumps in the groove of a vinyl record, is analogue information.

Before I say more I'd like to hear what others think.
exlibris

Showing 3 responses by mlsstl

> TONS of equilization...

Digital music is not alone in the area of needing special equalization when CD's are produced.

Keep in mind that in the production of all standard vinyl LP records, the RIAA equalization curve has a 40 dB range of boost and cut that is applied to the signal. It is not a straight linear drop.

See http://en.wikipedia.org/wiki/Image:RIAA-EQ-Curve.svg

In playback of an LP, the phono preamp must apply perfect inverse equalization and also assumes the record production plant equipment perfectly applied the RIAA curve to start with.
Regarding CD vs vinyl...

As one who who has been actively involved in music and audio electronics since the 1960's, I get the impression that many of the modern vinyl adherents seem unaware of just how many medicore and even spectacularly bad LP records have been produced over the years. I can't count the number of just-out-of-the-shrinkwrap records that were full of noise, pops and crackles. It was always tempting for a record pressing plant to extend the life of the stampers too far and/or use lower quality vinyl to save money.

There were also records pressed using distant copies of the master tape instead of an earlier generation. It would sometimes be quite surprising to find the variance in quality between my copy of a record and someone else's.

Of course, I've heard outstanding music from LP recordings, but the shortcuts taken and inherent problems of this system are in their own way the equal of any problems I've seen in the digital arena.
> How is the average person supposed to know what "sounds
> good" or "sounds right" when those supposedly devoted to
> "high fidelity audio reproduction" don't even know what it is?

Such touching devotion to the common man! ;-)

The real question is why should audio be free of disagreements about the truth of their chosen field when the rest of the world cannot reach agreement on their passions?

I know people who people who don't think some popular comedians are funny. I know people who think the highest rated (and most expensive) restaurant in my city is "so-so." I know others who look at =very= expensive art and state "my kid could do better than that!"

Ultimately music is an emotional experience. The particular brand of speakers you are enamoured with are tops on your list because they do a good job of delivering the audio cues =you= need for your best listening experience. For me and others, they may fall short since we are looking for other triggers.

Similarly, we can be more forgiving of some of a medium's or device's shortcomings than others. The background quiet of digital material is very attractive to some while others don't care that vinyl has an inherently higher noise floor.

Or highs. Not a lot of people are aware that LP records actually lose high frequency response as they wear during play. The RIAA considers it an acceptable standard for the high frequencies on a record to drop to 18 KHz after three plays, 13 KHz after 25 plays and as low as 8 KHz after 80 plays. (However, it should be noted that a properly configured turntable of good quality is not this rough on records but some loss is still occurring due to the physical contact of the stylus with the groove walls.)

That would never be an acceptable standard for digital recordings but is a fact of life in the vinyl world.

The big problem with many music recordings these days is that it is ultimately a business driven by money. The majority of people who buy music are not audiophiles. Record companies want their tracks to stand out on radio play lists and other environments where close listening is not at the forefront. In those cases, dynamic range and a natural sound can kill a song. This is the same as the fast food and restaurant industry pursuing cost efficiencies that are at odds with fine cuisine.

That said, there is still a lot of fine music out there that can be enjoyed in spite of whatever shortcomings we encounter.