Dr. AIX's POSTS HD-AUDIO NEWS — 28 December 2019


As we creep closer to the end of another year, I thought I would string together a few words reflecting some of the issues, trends, and observations that occurred during the past 12 months. As I see it, the audiophile world is being propelled by two opposing trends. The first is the irrational but continued growth and popularity of vinyl LPs and all of its associated paraphernalia — I have read that sales of vinyl will outpace compact discs for the first time in 2019. And second, the migration from physical optical, digital discs to high fidelity music streaming (notice I avoided saying high-resolution!).

Audiophiles had a choice in 2019. We could look backwards and embrace a highly compromised, expensive, inconvenient, sonically flawed format or revel in the reality of having access to any tune or album, anytime, anywhere, in CD quality for pennies a day. In spite of the marketing hyperbole, misinformation, and outright falsehoods put forth by this new. high quality streaming industry, the era of physical media is all but over. Vinyl LPs may be outselling CDs but that not because their numbers are overwhelming. It’s because no one is buying CD, DVD, or Blu-rays.

These two opposing trends are starkly represented in the marketplace ballrooms of every audiophile trade show. I attended and exhibited at almost every audio show over the past 12 months. Booth after booth were populated by vendors offering boxes full of vinyl LPs, expensive ultrasonic cleaning systems for discs, turntables, tone arms, exotic cables, rice paper sleeves, and specialized step transformers for exacting the last microdynamic of fidelity from the groove of an analog vinyl pressing. How many more times do we need a seminar on how to setup and align a turntable?

The Marketplace at AXPONA 2019

I have no doubt that advocates for vinyl LPs, turntables, and moving coil cartridges get great personal and musical satisfaction from their systems and luxuriate in the ritual of playing a favorite vinyl album. However, their preferred sound is at odds with the greatly increased potential represented by the newest audio technologies of our digital age. This is not an argument about which is better: subjective vs. objective listening. I would argue that it’s about what’s familiar and friendly. Specifications do matter!

Close friends of mine believe expensive power cords alter the fidelity of their systems, they continue meaningless rants about digital interconnects and isolation platforms being worthwhile expenditures for fidelity improvements, and they cling to the same tired excuses when challenged online or in editorials. How many times have I been told my hearing is failing, my system doesn’t have sufficient resolution, or I have a closed mind. My response is always that same. I’ve made my living as a professional audio and mastering engineer for over 40 years, headed the Audio Recording program at CSU Dominguez Hills for over 30 years, built and worked in a state-of-the-art multimillion dollar studio, and have willing to accept that my position on the merits of “high-resolution” (even my own bona fide examples) was most likely incorrect — and have changed my mind.

Services like Tidal, Pandora, Spotify, Qobuz, and Amazon Music HD represent the future of music listening. They may never appeal to traditional audiophiles — the mostly middle aged men that flock to the audio shows — but these new services have reached a level that makes them very attractive alternatives to physical media digital or analog. And they will only continue to improve. It’s time to move forward.

“Pre Hi-Res” Music

A few weeks ago, I noticed a comment on a submission request for the HD-Audio Challenge II form. The individual wrote:

“I’m not interested in your listening ‘challenge’, I’m just writing to explain how very very wrong you are in your assertions about ‘pre-hi res’ albums.

It is literally this simple: If the original analog master tape of a Jimi Hendrix album sounds better than a RedBook CD of that same (untouched) master (and only a tin-eared dolt would bother to argue that it WILL), then hi res DOES do a service to “pre-hi res” recordings by getting us closer to the sound of that master tape. PERIOD.”

I didn’t see the second sentence because the spreadsheet wasn’t wrapping multiline text, so I wrote and asked the individual for a little further clarification.

MW: I noticed your comment on the HD-Audio Challenge Submission form. I’m not sure I’m clear regarding your assertion that I’m “very very wrong” in my assessment of “pre-hi-res” albums. Can you state your objections more clearly? I’m always open to contrary opinions or facts…but need to understand what you’re contending.

I received the following:

RW: I think I was pretty clear in my message, but I’ll reiterate. You make the assertion that “hi res” is not a designation appropriate to albums recorded “before the era of hi res recording” (not actually a quote, but paraphrased here). You complained about sites like HD Tracks touting new issues of older albums as “high resolution” and “Ultra HD” that were recorded and released in an era before we had albums with a more “hi res” sound (I can only assume you mean sound of a certain frequency range that became substantially wider in commercial music in the late 70s), and that those earlier albums don’t merit their digital download files being designated as “high resolution” or “Ultra HD” because improving the quality of the digital version won’t give any additional fidelity to those albums.

You know what you were getting at. You articulated it quite clearly. And you were, and are, dead wrong.

High resolution playback is about getting us as close as possible to the experience of listening to the Master tape of an album — indeed, any and all such developments in playback technology aim for that target regardless of medium. The better the playback technology, the better that experience is replicated, and it makes no difference whatsoever whether a given recording needs ultra HD sound to deliver its sound in and of itself — it’s not about that. The limited dynamic and frequency ranges of commercial music of the early 70s (for example) are not what necessitate the HD technology; it’s about the playback technology being advanced enough to disappear from the equation entirely, leaving nothing but the (sometimes) stark reality of the music unfettered. 

So there absolutely IS a reason for those records to be issued in the highest resolution and most advanced formats possible, and any issued versions produced with that goal in mind should absolutely be designated as such.

Proof? If any Master tape of any record sounds better than the vinyl records of it that were issued to the public, and better than the CDs of it that were eventually issued, then the same is true of ALL records ever produced in the entirety of post-WWII history — not just the ones you think sound really good.

I hope that was as clear as it was verbose.

A Reasoned Response

I asked the writer if I could post his emailed comments. He promised to edit some of it down but I never received a followup so I’m moving ahead. I was intrigued by the idea of “pre hi-res” music releases and his application of the prefix “pre” to indicate a period of album releases that existed prior to high-resolution capable recording equipment and release formats.

I think we can all agree that audio consumers want and deserve to have the very best sounding version of any album — including those recorded in the “pre hi-res” period. Digitizing older analog masters using PCM digital with sample rate higher than 48 kHz and word lengths longer than 16-bits guarantees that the capture container far exceeds the fidelity of the original analog master. However, I support archiving these aging masters at 96/24 PCM. Moving any further is pointless and a waste of storage space and bandwidth.

This is where my experience and expertise differ with the writer. He wrote:

If the original analog master tape of a Jimi Hendrix album sounds better than a RedBook CD of that same (untouched) master (and only a tin-eared dolt would bother to argue that it WILL), then hi res DOES do a service to “pre-hi res” recordings by getting us closer to the sound of that master tape. PERIOD.”

This statement seems to contradict itself. Or perhaps I’m misunderstanding. I think the writer wanted to say “and only a tin-eared dolt would bother to argue that it WON’T” . I’m reading the “it” in his statement to refer to the original master tape.

Let’s accept that the 2-channel master tape of a Jimi Hendrix delivers the ultimate listening experience for that album (never mind that in many cases the original master cannot be located and safety copies or dupe masters are used instead). The writer seems to infer that a straight, digitized version at 44.1 kHz/16-bits wouldn’t capture all of the fidelity of the original tape and therefore moving to 96/24 — so called “hi-res” — gets “us closer to the sound of the master tape” than the standard-resolution CD capture. This statement just isn’t supported by the facts. A good digital transfer of the original master tape to 44.1/16-bits would sound identical to the original master tape! If you believe otherwise, take the HD-Audio Challenge II and prove it you can “easily pick out” the hi-res versions as some have claimed.

All preliminary indications from the current HD-Audio Challenge II results would argue that no one can “easily” pick out a hi-res music selection over a CD “Redbook” version of the same master (There still time to participate. Please visit this article to get started.” The submissions thus far are well below 50% success.

Hi-res audio is NOT an adjective to be used to describe recordings captured so as retain as much of the original fidelity of the master tape as possible. In the years I spend on the high-end audio board of the CEA and the NARAS meetings, the goal was to define “hi-res” audio as an absolute measure of recording quality — kinda of like HD-Video or Ultra HD-Video. The definition agreed to by the organizations, labels, and consumer equipment manufacturers established recordings made using equipment “better than CDs” — 48 kHz/20 bits or greater — as deserving of the hi-res audio logo.It was this flawed definition that prompted me to introduce the concept of provenance with regards to audio production. Recording from the “pre hi-res” era will never meet the specifications established by the organization behind the standard — and logo. The fidelity of the original Jimi Hendrix master tape will never be “better than CD fidelity”. It just won’t because the equipment and processes used to produce it weren’t high-resolution. Does that diminish the value of Jimi’s work or the work of the engineers and producers that crafted those classic albums? Certainly not. But they will never be hi-res music. They are “pre hi-res” and will forever remain so.

This from a gentleman that is not interested in participating in the HD-Audio Challenge II.

A Last Minute Special Discount on the Paperback Version of the Book – 60% OFF

It’s been an incredible year? My Music and Audio: A User Guide to Better Sound was lauded as the “new gold standard” for books on high-end audio. Thousands of copies have sold to audiophile eager to learn more about the art and science of high-end audio. Listeners that want to maximize their listening pleasure without breaking the bank. For the next four days, I repeating the 60% Cyber Monday sale on the paperback version of the book. Take advantage of this unique opportunity. Use COUPON CODE MAAG60Percent during checkout.

And as an extra incentive, I’ll throw in a free downloadable album from the AIX Records catalog (samplers are not available as downloads) to the first 25 customers that take advantage of this offer. I’ll reach out to those that qualify by email.

Forward this post to a friend and help us spread the word about HD-Audio Forward this post to a friend and help us spread the word about HD-Audio


About Author


Mark Waldrep, aka Dr. AIX, has been producing and engineering music for over 40 years. He learned electronics as a teenager from his HAM radio father while learning to play the guitar. Mark received the first doctorate in music composition from UCLA in 1986 for a "binaural" electronic music composition. Other advanced degrees include an MS in computer science, an MFA/MA in music, BM in music and a BA in art. As an engineer and producer, Mark has worked on projects for the Rolling Stones, 311, Tool, KISS, Blink 182, Blues Traveler, Britney Spears, the San Francisco Symphony, The Dover Quartet, Willie Nelson, Paul Williams, The Allman Brothers, Bad Company and many more. Dr. Waldrep has been an innovator when it comes to multimedia and music. He created the first enhanced CDs in the 90s, the first DVD-Videos released in the U.S., the first web-connected DVD, the first DVD-Audio title, the first music Blu-ray disc and the first 3D Music Album. Additionally, he launched the first High Definition Music Download site in 2007 called iTrax.com. A frequency speaker at audio events, author of numerous articles, Dr. Waldrep is currently writing a book on the production and reproduction of high-end music called, "High-End Audio: A Practical Guide to Production and Playback". The book should be completed in the fall of 2013.

(5) Readers Comments

Leave a Reply

Your email address will not be published. Required fields are marked *

three × 2 =