Special Features

Guide To Hi-Res Audio

SV Staff | Nov 12, 2015

High Resolution-Audio is the next evolution of digital music. Just as television technolgy leaps every few years with the addition of more pixels that deliver increasingly greater detail in the image, so too has digital audio evolved from its roots in the mid-1980s with the launch of the Compact Disc. Much has changed since those days, with many of us now collecting our music online as downloads, or enjoying live streams from Internet-based music services. Initially, sound quality gave up some ground to the convenience of cloud-based media and digital music libraries stored on our computers and smartphones. Now, with advances in computer memory and processing power, and today’s faster Internet speeds, music labels, audio equipment manufacturers and their supporting retailers can deliver in Hi-Res Audio the convenience of digital music with wide-bandwidth audio frequency range and improved dynamics that exceed even CD sound quality. It’s a difference that can be heard.

This Guide, produced by Sound & Vision’s editorial staff in partnership with the Consumer Technology Association (best known as hosts of the annual CES), provides a deep-dive look at this exciting technology. It includes basic technical definitions to help you understand what’s special about HRA, information about equipment you’ll need, tips on where to find hi-res music online, and more. We hope it will help jump-start your journey into the world of Hi-Res Audio, allowing you to rediscover your favorite music of the past with a fresh ear while introducing you to new recordings from today’s popular artists that offer a whole new level of engagement.

Here’s what you’ll find in these pages:

Hi-Res Audio FAQ
Understanding Hi-Res Audio and why you want it.

Hi-Res Audio Step-By-Step
Four simple steps for hi-res newbies.

Hi-Res Audio Gear Guide
New toys to help you better enjoy hi-res music.

Recommended Hi-Res Tracks
Music labels suggest their best and most popular hi-res albums.

Where to Find Hi-Res Music
Our guide to the most popular hi-res music stores.

Hi-Res and the Art of Provenance
How the music industry is future-proofing the integrity of hi-res recordings.

Hi-Res Audio Glossary
Key terms and definitions you’ll want to know.

Quality Sound Matters
Information about QualitySoundMatters.com, an informational website powered by the Producers and & Engineers Wing of The Recording Academy and CTA.

COMMENTS

Want To Embrace This But...

Submitted by brenro on November 12, 2015 - 9:33am

I'm pretty old school. Extensive LP and CD library. I have a couple of CD's ripped from HD Tracks downloads and yes, they sound fantastic. My issue is storage. If I acquire a vast catalog of downloaded music in a high resolution format aren't I also needing a great deal of hard drive storage space? Granted it will take up less space than a CD or LP collection but aren't we still talking many many terabytes of data?

Yes, but that is cheap. I

Submitted by trynberg on November 12, 2015 - 10:12am

Yes, but that is cheap. I have two 3TB drives (one is physical backup). They're under $150 these days.

Price Isn't The Issue

Submitted by brenro on November 12, 2015 - 10:48am

Yes hard drives are selling at bargain basement prices these days. The issue for me is I would need an entire forest of them to equal several thousand CD's worth of downloads. These files are BIG!

Depends on the file sizes...

Submitted by mtymous1 on November 12, 2015 - 1:05pm

...and availability, for that matter.

If you're going to have nothing but disk-hungry, DSD 128 files, then you'll get only roughly 250 albums per 1 TB of disk space.
(See http://www.crutchfield.com/S-f83gBGf7jCd/learn/high-resolution-audio-gui...)

It's not like every digitized album is available in DSD 128.

I recently ripped 400+ CDs at 44.1/16 and it only cost me 138GB worth of space.

As noted above, you can fit

Submitted by trynberg on November 12, 2015 - 2:12pm

As noted above, you can fit about 250 high-res albums on 1TB...a 12TB WD My Book could hold almost 3000 high-res albums. Buy a 2nd one for backup purposes. True, that much storage is no longer cheap ($450x2).

This Is What I Was Looking For

Submitted by brenro on November 12, 2015 - 4:50pm

Didn't realize hard drives had gotten that big. As you say not cheap but definitely doable if I'm going to go whole hog into this. Thanks.

They're not QUITE that big..

Submitted by trynberg on November 12, 2015 - 5:17pm

They're not QUITE that big...the 12TB My Book uses (2) 6TB drives in RAID 0 or JBOD. You will need Windows 7 or more recent.

USB DAC not necessary!

Submitted by trynberg on November 12, 2015 - 10:10am

I'm a little surprised by the inference that a USB DAC is necessary. Most readers here will have a receiver with an HDMI input capable of handling multi channel high res audio.

Yep...

Submitted by John Sully on November 12, 2015 - 1:02pm

In fact many receivers will play hi-res files via their DLNA network input, so if you have a DLNA server just copy the files into the directory it indexes and away you go.

DLNA depends on...

Submitted by mtymous1 on November 12, 2015 - 1:24pm

...the server and the renderer - BOTH have to support the resolution that's been encoded and decoded. Some DLNA server solutions re-sample the files to 44.1 or 48 kHz, and some renderers can only receive up to a certain frequency via DLNA. Check your manuals FIRST, to (re)set your expectations.

Yes, my receiver can only

Submitted by trynberg on November 12, 2015 - 2:09pm

Yes, my receiver can only handle high-res stereo tracks and not 5.1. However, my Oppo BD player can accept high-res 5.1 DLNA stream from Foobar2000 and transmit over HDMI to receiver. Or I can plug in laptop directly to receiver over HDMI with Foobar2000.

USB DAC *IS* necessary if...

Submitted by mtymous1 on November 13, 2015 - 7:47am

...you're an Apple fanboy who wants to overcome the 96/24 stock soundcard limit.

This "guide" should be be renamed to...

Submitted by mtymous1 on November 12, 2015 - 8:27pm

..."The Apple Fanboy's Guide to Downloadable Hi-Res Audio (and how to overcome the limitations of the Apple ecosystem)."

My goodness - outside of the FAQ's and Glossary, I don't think SACD was mentioned anywhere else... There sure were quite a number of iTunes mentions, though!

Wooden recordings

Submitted by Alicatt on November 14, 2015 - 9:54am

Quote "Hi-Res Audio tracks capture the details, instrument and vocal timber and textures" The only wood I want to hear is that of the speakers, I would much rather hear the timbre of the voices.

There is no mention of the provenance of the recordings, if I re record a cassette tape to 192/24 does it then become a Hi Res Music file?
The whole chain from artist's performance right through to the end product should be Hi Res, not just the final container file

Provenance is important

Submitted by ezraz on April 28, 2016 - 2:02pm

there's been some advancement here on information of provenance, but a lot of it is private or lost.

in the hands of mastering 'masters', anything they are given can be taken up to 24/192 and be worthy of a listen. so yes, your statement is correct. it's the new hi-res master if they bothered.

if it's just up sampled it's a scam. no one is advocating that or selling it. when it sneaks through it's pulled and treated as a mistake. pono even offers a lifetime res upgrade.

most things aren't coming from cassette, of course. or 16/44, there's no point. if it's locked at 16/44 when recording it probably is, i don't think any label is in a hurry to get it to 24bit.

it's the old tapes and the new releases that are key here. the old tapes can be digitized again at 24/192, and then sold to consumers finally. the new sessions can be distributed that way, effectively giving the mp3 people their 10% version but still having an outlet for selling the full version.

Cost benefits?

Submitted by dommyluc on November 16, 2015 - 11:40am

Hi-res is all well and good, but I have not yet heard a major difference that would result in people like me - you know, regular people who have to worry about oh, you know, paying rent and utilities and buying food and shelter - spending a fortune to replace all the CDs we have with downloaded hi-res versions that usually cost between $25-$30 a pop. Hey, I can find great Blu-ray discs on the "A" site and other online retailers for less than $10, but if I had to pay 3 times that to download a hi-res version of the movie, I would tell them to go scratch. Why should hi-res audio be any different.

I say "Prove It"!

Submitted by Radio Randy on November 19, 2015 - 11:54am

I'll admit...I have a high frequency hearing cutoff at around 4KHz (both ears), but I still enjoy my music and can have meaningful conversations. I'll also admit purchasing a Sony HAP-S1, HRA player that I like, very much.

Unfortunately, I disagree with most of the hype about HRA. Of the "scientific" studies I've read, all indicate that the (average) human ear simply cannot discern a difference between CD quality audio and HRA. The arguments against HRA are impressive, from the inability of the human ear to hear frequencies in excess of 20KHz, to the problem with the ability to listen (without extreme pain) to audio levels that span a 24dB range (or greater).

This HRA guide reproduces (again) an audio "waveform" that has been shown to be totally inaccurate, in the attempt to relate to the listener the difference between analog and digital audio. I don't know why this information continues to be reproduced, other than to convince non-technical types of the dubious differences between the two mediums. If it weren't for the fact that I work in the field of electronics and have kept abreast of the technological changes, since the tape and vinyl era, I, too, might have been sucked in by this "sleight of hand".

On a similar note...while I might discern the difference between a long run of 28 gauge speaker wire, versus 14 gauge and likely notice a difference of 64Kbps sampled audio, versus 44.1Kbps, you cannot convince me that I will hear the difference between plain copper and solid gold wires of the same gauge. You also would be hard pressed to convince me of the audio improvements between 44.1K and 96K sampled recordings. The differences are just too slight.

I do agree that CD quality audio is WAY better than either vinyl or tape...Hell, I grew up in the 60's and 70's and have heard it all. I also agree that HDTV (on a larger screen) beats the crap out of old 420 line video. Those are major differences that are easily discerned by the human ears and eyes...even ones as old and decrepit as mine. What I have been entirely unable to realize, however, is a noticeable difference in HRA over my CD collection. It just ain't happenin' here.

My final comment is, if you are looking to move up to HRA equipment and files...get your hearing checked, first. If your hearing qualifies as average to lower than average...save your money, as you will be unlikely to appreciate what you will be spending your hard earned money on.

Oh...I mainly purchased the Sony to: a. Have a desktop player with all my music onboard and b. To prove or disprove the HRA hype. I'm good with a., but b. has totally failed to convince me.

HRA

Submitted by Craig A Peterson on December 10, 2015 - 1:57pm

The discussion of Radio Randy hit home with me. I love my music but suffer similar hearing difficulties (too much loud music in the 60's and 70's) I'll stick with my vinyl, CD's and occasional iTunes download. Thanks for the article.

Doctors advice ?

Submitted by true audio on December 13, 2015 - 9:50am

First its our girlfriends and wife's convincing us not to buy any audio-video gear cause they can't tell the difference. Now we are going in to the doctor's office and asking his advice.? If you love music and your hearing is bad (get a hearing aid)! your bound to start hearing everything again.(which could save your life !) The problem is that most of us don't really listen. If the average person sat down with a blind person and they hear the same track.. that's because their auditory senses are developed. The other problem that many of us might be suffering from is called (auditory processing disorder)its a glitch in the brains ability to filter and process sounds. If you've never played an instrument and done any studio work you ear is not developed. Unless your gifted. But really the most important thing is that everybody listens to music, in what ever format. The more you listen the better you get at listening. Get in your favorite chair, close your eyes and try to pick out every instrument. you will start hearing things you didn't know was there. Listen to Hi-res,non Hi-res, different volumes, different amps,speakers ect. That's all part of loving the gift of MUSIC !