TonalDynamics
Active member
I understand where you're coming from, and agree with your conclusions...but not necessarily how you got there. It's true Alan Blumlein used the word "binaural" in the 30s. But unfortunately the audio industry does not have a style guide, and the meaning has changed in the past 90 years. In "modern" usage, binaural recording has come to represent what that Neumann dummy head does - mics placed at ear positions, intended for headphone playback, and capable of capturing HRTF cues, ear shadowing, and pinna filtering. So given that the Blumlein pari is designed to produce a realistic stereo image for speakers or headphones, it's considered a stereo technique, not a binaural one. Then again, we're in an industry where aftertouch has five different names that all mean the same thing...
I listen to my binaural mixes on headphones when I take walks, and prefer them to the stereo mixes. But, they're 48 kHz uncompressed WAV files. I guess I'd need to get them on Tidal or do downloadable FLAC files or something to be able to demo them properly. I've learned my lesson about binaural and YouTube. It has added a 256 kbps option for music videos if you subscribe to YouTube premium, but the free tier is typically 128 kbps for stereo on iOS and older devices, so you have 64 kbps per channel. No wonder there's a problem. Their Opus codec is most common for desktop and Android, and it runs around 160 kbps - in theory. But, YouTube changes the bitrate dynamically based on the device and network connection. So who knows what you're really getting...I don't.
BTW thumbs up to the Swedien comment. We did some seminars together in Mexico and he was your basic humble superstar, with humor added into the mix. We got to hang at various times and it was always educational. Fortunately, I didn't suffer any lasting physical injuries from laughing too hard![]()
Yes, he was quite a lovable figure indeed apparently... one of my buddies actually got to be an assistant for him on some projects back in the day and personally learned a lot of miking techniques from him. Yes, I am jealous.
Super cool that you got to meet him.
So Youtube is utterly nuking the binaural bitrate somehow eh? That's so weird that it isn't ruining the stereo mix as well...
Aaand I just realized I forgot to link the music for that choir... woof.
Here goes, true binaural goodness in the choirs a la Bruce:
Choir so close I can smell it!
I'll push back a bit and contend that while Blumlein might not fit the modern criteria for binaural (didn't want to get into HRTF etc.), binaural is certainly still just a stereo technique since we basically hear in stereo.
You're basically saying what I'm saying though vis a vis the Neumann mic vs. a binaural 'rendering' pipeline...
If you want true binaural, you gotta record in binaural.
I realize YT is mucking up the binaural mix, but here was my original comparison to the stereo below
The analysis might change a bit if you get a HI-Q re-up somewhere (don't worry if it's too much trouble)
But the general sentiments and impressions for binaural rendering pipelines is all there:
To be clear, none of this is me trying to educate you Craig, I realize you know all this stuff.
It's just intellectual discussion of various impressions for the folks at home (if anyone's interested).
Thanks for posting those Craig... as I am a huge nerd for comparative listening, I plopped those two mixes into HOFA Blind A/B for a quick shootout. Cool song btw.
Intro: The reason the upmix sounds immediately better is because this pad is virtually mono/straight up the middle in the stereo mix, which unironically doesn't sound stereo at all. You can achieve this with simple M/S processing during mixing (I assume the binaural upmix is just some type of M/S matrix in general). I would have either double-tracked the pads, panned 50-100 with a stereo slapback in the opposite channel, and applied some kind of stereo verb after the fact regardless of what else was done. In any case it sounds like a bell cut around 300 and 700-1000hz would have left a lot more room for the lead vocal, the center is simply too crowded for both.
Vocals: When the Lead VOX enters here the MONO Pad is a double whammy, because since there's no space in the center of the mix the pad frequencies mask out the lead vocal leaving it sounding muddy and lacking clarity, as pads/strings have a tendency to do.
Chorus:
Again, the guitars here are a bit too narrow for my taste, adding to that center-congestion. This is why the binaural render seems to be helping so much.
Funny enough the snare drum sounds BETTER/punchier in the chorus because those tack-piano sounding keys that double the guitars on the DMaj-AMaj-Emin chords at the start of the bar are pushed out to the sides along with the guitars, making space for a snare drum that was being strangled a bit. But it seems that only the HI end of those keys is pushed right in the BiA mix, which separates them from their low end components and makes it sound smeared.
Lead vocal... this is the double-edged sword of this kind of plugin/preset based upmixing process: In the chorus the Lead Vocal gets completely un-centered compared to the stereo MIX. To my ears it sounds like a MONO vocal is being taken and having it's frequencies distributed across the stereo field. This traditionally leads to a lot of phase-smear which ruins our brains ability to echolocate the origin of a sound (lead vox in this case) and presents a confusing point-source to the listener. It's basically just HAAS effect (doubling+time/pitch-shift) being introduced onto a mono source to make it wider at the expense of ruining its phase coherency... does more harm than good in almost every situation IME.
Oh, and it tends to ruin transients as well which often leads people to try to overcorrect for it with slower compression to emphasize attack, where they should simply remove the HAAS effect or M/S processing and fix the problem at its source.
Generally the low end of the entire song (which is quite good in the stereo mix honestly) is diminished by whatever's happening with the binaural processing. 'Stereoizing' BASS instruments is less of an aesthetic restriction than a matter of energy distribution, i.e. if you have one speaker with +3dB more of bass energy, the mix simply won't be turned up as loud by the listener.
Bass instruments don't have to be centered, but BASS energy must be balanced across both channels or it will not be comfortable to listen to. You also have tons of imaging problems in venues with such mixes where one side of the audience doesn't have bass in their ears...
The BASS in the binaural mix has the same panorama-smearing going on as the lead vocal, making it confusing to localize and diminishes the perception of PUNCH.
It also sounds to me like there is some kind of HI-shelving going on in general with the upmix, it's just generally more present. This also should have been done during the stereo mix. (EDIT: Apparently this was due to Youtube?)
I like to call these various rendering solutions 'stereo+'. The 'stereo+' upmixing pipeline is just a Wal-mart version of what Bruce did his whole career. It's a simulation of depth and width at the expense of phase smear/coherency and destruction of the existing pan scheme. You can only achieve that in earnest with a Blumlein pair/DUMMY-mike (for true 'binaural'), or just record XY/ORTF/AB and mix it properly, it will sound WAY better than casually performed M/S processing on an existing stereo MIX.
Binaural 'upmixing' -- regardless of which plugins are being used -- is nothing that can't be achieved by a half-decent mix engineer/producer and in my view isn't really worthy of being called a true 'binaural' experience. This has to be done at the recording, engineering and mixing stage.
Honestly any great stereo recording technique will yield far better results than a binaural rendering workflow. I do agree it's a nice post-trick/band-aid for fixing a poor stereo mix, though. And while the song itself in this case is pretty good, we sadly not only have a lot of poorly written and recorded music these days, much of it is horrendously mixed due to cost-cutting, or to be perfectly fair, just mixed at home by hobbyists with rather poor monitoring solutions that can't be helped.
Abstract/TLDR: Binaural rendering/post-processing generally improves tracks that were poorly mixed for stereo, and tends to ruin tracks that were mixed well which already possess adequate width and depth. Regardless of the quality of the source mix, phase-coherency and instrument placement is largely destroyed in the process.
If you want 'real' binaural, you gotta record in binaural... no shortcuts.
But as we were discussing, even binaural is child's play compared to what Atmos is capable of... being surrounded by speakers enables you to eliminate masking from almost every sound source by several orders of magnitude compared to stereo. It's just that no artist/producer combo have taken advantage of it yet. Too expensive, too complicated, not enough ROI, etc...
Binaural rendering will no more give the sound of a binaural recording than listening to an Atmos/Spatial tagged-track in headphones/earbuds will reproduce the sound of an Atmos setup.
I will gladly eat a large portion of crow if you upload a HI-Q version that YT doesn't destroy (or not, no pressure!)
As someone who's heard a lot of binaural upmixes though, I doubt my impressions would change very much and this shootout reflects my general take on the subject.
JB