Combination Tones
ฝัง
- เผยแพร่เมื่อ 6 ก.ค. 2024
- The vanguard of psychoacoustic music. Tartini Tones, Combination Tones and Heterodynes play with perception and push the boundaries of music. This video essay explores what they are, how to hear them, and how they’re used on the cutting edge of the avant-garde.
Thanks to Brian Krock for helping me out with some of these examples!
Thanks to Simon Fransman for the new intro! Check it stuff out.
/ @simonfransman
⦿ Tartini (Tartini Tones)
www.istitutopalatucci.it/libri...
⦿ Acoustic Beats
soundphysics.ius.edu/?page_id...
⦿ Resultant Tones (pipe organs)
web.archive.org/web/201107241...
• The 64ft and 128ft ped...
⦿ Musical Examples of Tartini Tones being used in interesting ways
• Jon Catler, Harmonic S...
• "Tartini Tones" BEATBo...
• Sons résultants - Comb...
⦿ Otoacoustic Emissions
en.wikipedia.org/wiki/Otoacou...
emedicine.medscape.com/article...
www.sonami.net/Articles/Amache...
⦿ Maryanne Amacher
www.nytimes.com/2017/05/19/ar...
• Maryanne Amacher speak...
vimeo.com/87401740
⦿ Blake Shelton
• Blake Shelton - Came H...
Yeah, that's it! Check out as many of these links as you'd like, they're intended to send you down a rabbit hole or two.
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Peace,
Adam
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Sum and difference frequencies are at the heart of communication theory, ie, transmitting and receiving radio signals, whether it is AM, FM, SSB, QAM, etc.
The trig identity (or any of the equivalent permutations of it) is sin(x)*sin(y) = 2*[cos(x−y)−cos(x+y)] .
You might thing, hey, what causes that multiplication? That is due to the non-linearity of an overloaded receiver, your cochlea. The resulting distortion isn't a simple product -- but whatever clipping function is going on can be broken down into a taylor series, and most likely a simple product is one of the dominant terms of that function. There will be a mess of other higher order squares or cubes, but they are much weaker.
nice dude
Nice 😂
You learn something new everyday.
I was thinking that there is a convolution of two functions, one is sound from instrument and the other is response characteristic of an ear which results in physical oscillations of eardrums on that lower frequency. I'm simply paraphrasing what Adam just said))
good answer, heterodyning is essentially a technique to allow radio signals to become audible
some of us are studying for our HAM radio operator liscence, beat ocillators, RLC circuitry etc
"You will hear two piccolos"
Immediately turns down volume
Oh god same lolll
This triggered my orchestra ptsd
Only way to tune 2 piccolos? Shoot one of them
@@hemogoblin3076 I mean, piccolos are pretty atonal anyway. At least, that's what my non-deaf friends say; I sat in front of one in band.
Same lol
Well, you sure had some fun making the intro...
I love that intro!
It kindaaaa made me very very uncomfortable
Jan Minor i liked the comment, but unlike whenni realized the person before me was like number 432 lol
How did he do it?
That creepy intro gave me great Laurie Anderson vibes.
8:05
I only realized now that you edited the video into playing the lick
coercion
I’m laughing so hard at that rn 🤣
Same!
I don't get it
My speakers suck so I can't hear shit
When a screen misaligns
And you see strange designs
That's a moiré
xkcd.com/1814/
When his skin is tattooed
And he buries his food
That's a Maori....
Gtfo
boi
@@mackrac yes
I wasn't prepared for the new intro
ArchColbert
No one is prepared for the new intro!
It's also finally a new series, so a new intro makes sense. This isn't bass lessons anymore.
I've been waiting my whole life for the new intro
He's been watching stranger things 2
Dude my sister and I used to sit in the floor and like almost scream the same pitch at each other, then one of us would slowly and slightly raise and lower the pitch and we would hear these beats. This video completely made sense of what we were doing. I’ve always used it as a way to tell when something was in tune. Incredible work as usual. Keep it up!
I’m imagining your parents hearing you two do that for the first time (and the second and the third…) and I’m just cackling 😂
Me and my friend used to do this on the playground when we were little, scream basically screeching whistle tones directly at each other and the lower tones it would make in our ears were ear piercing and this makes so much sense now as those tones were literally coming from our ears. Sorry for the 6year later reply.
@@colepettit8550 just want to say I remember writing this and it shocked me a little when I read 6 yrs. I was like whatever that was like a month ago mayb….. uh what?! Ha ha
Adam is completely aware of how deep his voice is, how impressively imposing it sounds when pitch-shifting, and I love it.
I had the personal pleasure of seeing the late Maryanne Amachér give a revelatory demonstration at SFAI around 1990 ( your clip looks like the same lecture) where she played music tuned to the auditorium's acoustic signature which propagated otoacoustic pitches at the point of the listeners' ears, to disconcerting effect. She explained that performance geniuses like Mozart and Jimi Hendrix had intuitive grasp of the phenomenon which allowed them to connect to audiences in a physically intimate way that lead to the very real perception of being touched. I consciously experienced this response tone effect in church when a singer's voice set off my ear's response to her voice resonating in the church's interior (only typical American wallboard construction). It was a delightful experience that reinforced the emotional and spiritual impact of the hymn being sung.
This went back and forth from educational to shitpost so much
Arno goes Online Wat?
I think it's called infotainement. ;-)
Sir Ramshackle Makeshift infotainment*
Welcome to Adam Neely.
That's the education I signed up for
Many years ago I was with a friend in a tower, or lighthouse or something that was very resonant. She sang a high note and I sang a falsetto note to match it, but obviously not exactly the same note. As we sang I heard this woosh-woosh sound. It was weird and amazing. Now I finally know what it was.
That sounds like the flanger effect or something similar
me and my ex did something related we thought that we matched the pitch or something but the resonance was so strange it came from our ears
"Bill Clinton raises a good point."
That had me dying.
If you play a xylophone really loud in a small room, you can hear the combination tones really easily. But eventually you won't hear anything because you'll be deaf.
I assume you mean marimba? A minor second on the low notes of the marimba in a small room are insanely loud
Or a glockenspiel. even I you play single notes you still hear the combination tones
@@layz_gaming_4275 I think you're right. Glockenspiel, I'd say. It has high pitched sounds similar to those of a piccolo, but with different attack, decay and release. 99% of people mean glockenspiel when they say 'xylophone'.
that intro was incredible
Pro tip - make sure the piccolo and synth are in the same key.
I lol'd xD
This comment has too many likes for me to not understand it...
Lol, but also your eardrums should be on the same key
John Thompson It's a mockery of a comment someone posted on a cover. Adam showed it in one of his videos.
I like that this post has become obligatory on all of Adam's videos.
Come on, cartoon Adam, straighten that wrist out!
Animated Adam doesn't have tendons so he doesn't need to worry about anything
Can't unsee it now
@@27shogun58 Me too.
I can't hear it. I'm an engineer though, so assuming my ear is linear.
As an former engineering student, I appreciate your joke. Well done. Well done.
My engineering degree is summarised as: everything is linear if you're brave enough
that's what my professor always said rofl "everything is linear if you zoom in enough"
Jeff Irwin W
Good play
That felt like my eardrums were being pulled out of my skull in opposite directions, like in a tug of war.
Thats piccolo for ya
I can actually feel what feels like some sort of physical rubbing, it seems to tickle slightly at lower volumes and gets very unpleasant at higher volumes
Jamsville same, but for me it was only my right ear D:
Thats what playing in an orchestra feels like if you are sitting on the piccolo-side of the brass section.....*flashbacks intensify...*
Holy shit that intro those mad ps1 graphics
Hey! That's PS2 graphics.
Gumshon nah fair enough it looks like a model from san andreas
Those are like the graphics that were used in the Californication music video. Absolutely impeccable.
As a kid, my best friend and I used to scream towards each other at slightly different pitches to produce combination tones. True story.
I used to do this a lot when I lived in Brighton..
There are tunnels under the road that lead to the seafront..
I played flutes and whistles in there for the long acoustics..
If you played quickly in the high registers of a small whistle..
particularly in the 3 octave the lingering echoes create this effect..
I used to say it was like the air was crunching.. very fun..
What's it called when Adam Neely is emotional?
Adam Feely.
Ne oblivscaris \m/
Please stop these puns. I'm begging you... I'm on my ... Kneelys
What's it called when Adam Neely need something?
Adam Needy.
What's it called when Adam Neely rides a motorbike?
Adam Wheely.
AugustBurnsSam Dude, what's the Deely with all these puns, anyway?
okay isn't this what I did as a kid with my little brother? you would both be in a car and scream really loudly at the same tone and you hear a buzzing noise.
Combination tones, to me, really stand on the line of hearing and feeling. I can feel the combination tones in my mind, and it's fascinating
Props for really putting an effort into the italian pronunciation! ;)
Lol it makes me laugh everytime he tries to pronounce italian words!
ok, but the typo he could still save himself from doing.
I miss the intro in 4ths.
My inner ear misses the intro in subharmonic intervals.
0:58 I’ve been searching for this specific intro for over an hour. I finally found it, again!!!
I think the composer M. Amacher’s name is French so it is pronounced “Amašé”. The clip you show of her lecture is, I believe from the presentation she did at SFAI sometime around 1990, when I was a BfA student there. The lecture-demonstration was mesmerizing and spooky. She spoke cogently of how great performers like Mozart and Hendrix must have had an intuitive grasp of what she called “response tones” and their performances struck audiences as incredibly intimate because audience members’ organic response,mostly unconscious, was shocking and visceral, taking place physically inside their heads.
Dude, when I found your channel, I knew I’d love it. That was about a year ago. Every time you upload a video, I always click as soon as the notification pops up.
I can’t thank you enough for these videos. You’re awesome.
Edit: You should do a video based upon the idea that music starts in the mind, not the instrument. I look at instruments as filters that shape out what I actually hear in my head. Anyway, thank you again. You’re amazing.
Torque Bow ahh periphery nice
Les Claypool of Primus always said that the bass guitar was merely the crayon he chose out from the box to express his ideas and what he had in his head. He feels as if it could've been any instrument but he chose bass to turn what he had in his head into reality.
That bent wrist in the intro though
Only a guy who have learned animation for 3 years can do that intro.
Probably Ben Levin.
Does this work with A=432? I don't want my inner ear playing in evil 440, for reasons, or something.
Javier Benez It doesn't work with A=432 Hz because God will not allow anything satanic.
If you put a quartz crystal in your belly button and face Promima Centauri it cancels out the negative effects of A+440
Javier Benez l9l
Oh and make sure to buy natural essential oils
And sacrifice yourself to Cthulhu too
i can't believe u edited that sax player to play the lick... i .. fucking.... love you
These videos of yours are turning into a kind of art. This one made me smile, reflect about lots of things, gave me goosebumps...
Besides all that, thanks for these information!
When tuning my guitar I use harmonics to easily hear the rhythm of the two slightly out of tune notes until it becomes one clear tone
That's considered bad practice by a lot of people because harmonics don't actually follow the equal temperament system we've been using. I still do it on bass because the difference is REALLY small with fourths/fifths (and harmonics are much easier to hear than bass frequencies) but on guitar it's a pretty bad idea to tune B string 5th fret harmonic to be the same as G string 4th fret harmonic (which should be the same not but not quite). Seriously, don't do that.
(aaand now that I've finished writing this I realised you probably meant harmonics as in naturally occuring overtones, not the playing technique. Oh well)
Counterpoint, we are actually used with guitars to NOT be in equal temperament so most guitar-based music subconciously revolves around that sound.
In fact, Adam made a video with Paul DAvids about it: th-cam.com/video/-penQWPHJzI/w-d-xo.html
I've been going to school for over a year to become a producer and your videos have always been a great outlet to learn new things not covered or touched upon in some of my classes and I am glad that music continues to sound better thank you
Man, I remember some 15 years ago when I was recording a song with my band and I was playing a high pitched interval-figure on a distorted guitar and we always got these weird low notes that ruined the harmony completely. I finally recorded the notes separately and panned them slightly to get rid of the effect. Probably this very phenomenon. Very cool.
Accidently explained inverted power cords!
I think with those it's more a matter of harmonic overtones combining in such a way that it creates the illusion of the root being down there but I never did any research on it so that's just my best guess.
Super dope! Thanks for continually taking the time to go in depth on such seemingly esoteric topics :)
Adam, thank you so much for these videos. I find your approach of music to be truly fascinating; you help so much by defining precisely all those aspects of music that are often left on the side by many people.
Delving deeper and deeper into music, I often find that understanding the inner workings of sound is really a great thing when it comes to writing or appreciating a piece - and you're one of the people who sparked this interest for me. Keep up the great work, you truly are an inspiration to me.
I think I get the gist of what you're saying... you like Universal Music Group?
LOL :o)
That was mean
JoseitoEdlVodao &\\u\
I don’t seem to be able to hear this, even when I blasted it loudly on my headphones.
I think I can hear tinnitus though.
One year later, but it doesn't work with headphones
I have tinnitus,...world's worst case...it helps bring out these squealies...for me at least...
@@Sheerspeechcraft Wtf...? Yes, yes it does. I would even go so far as to say that it works *better* with headphones; as the sound source is closer to your ear, the sound transmitted to your ear is less altered by the reverb and EQ characteristics of the space you are in.
Please, can you provide *any* credible reason for why you couldn't hear combination tones with headphones? I can say from personal experience that you very much can hear combination tones with headphones - I am listening to them right now.
@@Sheerspeechcraft It very much works with headphones. I could even hear the sum tone with headphones, lol.
@@asukalangleysoryu6695 "can you provide any credible reason for why you couldn't hear combination tones with headphones?" Well I mean how do you expect someone to answer this if they don't? If you're gonna be anecdotal then I'll add that I didn't hear it with headphones and had to listen on my laptop speakers to hear it first and then once I knew what to listen out for, I could hear it with headphones
This is absolutely mind blowing. This is the first time I hear something new in ages, a totally new kind of sound. Thanks, Adam, really.
Hey, Vsause4! LOVE the new format. Super interesting topic! Hugs from Sweden
Combination tones are the bread and butter of dubstep screeches, love em. You can bring them out much easyer if you just use distortion in your Music Software rather then trying to distort in someone's ears (pro tip).
I feel like a lot of headliners start tapping into this and finding the balance towards this sound when playing in tune with their crowds
Out of interest, if the two tones are loud and above the threshhold of human hearing but should still produce a heterodyne, do we hear it?
I'm playing about with a tone generator on my laptop to try and work that out. Not sure if I really ought to be using a frequency generator, in case the soundcard is nonlinear at those frequencies.
Update: I have a headache. And I think the answer is 'no'.
Yes they use ultrasound interference to make directed beams
Actually yes. This is exactly how a theremin works (at least early theremins, not exactly sure how more modern ones work)
Only if you're alone in a forest when a tree falls.
the only way you'd be able to test this is if you had a system that could playback accurately above 20kHz, and that, I expect, would be hard to come by.
The Benn Jordan video on speech jamming got me here! really enjoyed this video and how you made the concepts so understandable as well as the little humour. Great video!
absolutely incredible video, thanks adam
You are like a Vsauce of music, great work!
Vsauce is so scattered though (at least from the videos I've seen). Adam focuses nicely.
Paul Sutherland Michael from VSauce once explained that he tries to lure you in with something clickbaity and than shoves as much information in as possible that relates in some way to that topic
Vsauce sucks if you actually want to remember any of the 100 mindblows per video quota they have to fill and that makes it especially bad for learning. It's good entertainment but they're not educating people. Makes more sense doing what Adam does, introducing a concept, then actually explaining it.
Adam is informative, sure, but if he starts popping into frame like a muppet at the start of every video and using the same repetitive vocal cadence any time he explains something, I'm never coming back.
it's "bad" for learning. But times are moving fast. Retaining information and bits of passion in doing so will help you a lot faster than learning something every month, or week, while it does create a great foundation this way some people already have that foundation. It's like a learning ADHD thing some people love to listen and learn.
"hey could you make this easier to understand"
Part III: just as difficult but with pictures instead
Thanks, Adam. You always provide good content through a practical lens. You seemed to skip over one huge application of this, however, and I can only assume it's because of your little-to-no experience with it.
Barbershop Harmony.
We do this all the time in Barbershop. It's not merely a way of checking our tuning, it is the characteristic sound of our chords and how we sing them. In the Barbershop world we fondly refer to them as "Undertones," similar to the behavior of the undertone series but not exactly the same. Performing Barbershop Harmony at a high skill level results in a very high percentage of the chords "ringing" or "buzzing" with this phenomenon.
This is a fantastic quartet that always sings at a high level. In this live performance, you can clearly experience the clean, buzzing harmony we hold dear. Don't be mistaken by the bass singer's tone, there are absolutely combination tones going on here: th-cam.com/video/K2hN6DOekAo/w-d-xo.html
Superb video. Had me on the edge of my seat from beginning to end. I've got a good reading list for the rest of the year also
I was just discussing this phenomena with my drummer this morning. Get out of my head.
lol, yeah it seems to be annoying sometimes.. I wonder if booze makes it more intense, I think so....
8:21 That Super Mario Castle Theme :D
Oh I'm glad I wasn't the only one who noticed
I saw the person dressed as Mario and though “hey it’s Mario” then I heard Mario and thought “hey it’s Mario” then Mario came into my room and hit me in the face with his cock and I thought “hey it’s Mario” then he started hitting me in the neck and a realized it wasn’t Mario it was my dad
Lol jk
What a captivating class I just had. Thank you Adam Neely.
Thanks for Introducing Mrs. Amacher to the TH-cam crowd. I always enjoy it when you bring in modern composers and their concepts
This is a really great video Adam! You should have included some examples from spectral composers that exploit this effect in their music quite frequently.
8:20 is that super mario playing the organ?
Man, I thought I was imagining things. I frequently get these "hallucinations" where I hear things that I want to hear in what is something else entirely, if it's not clear or noisy. Kind of like confirmation bias taken to the extreme.
I kept hearing the mario door-opening sound in my head when the organs started playing.
I think so. Pretty sure it was the ghost house theme from Super Mario World being played.
Vharmi No, this is the Castle Theme of Super Mario World
This is exactly how I tune my violin without even knowing it was a thing. When I tune my E string on my violin by bowing both the A and E string, I listen for a lower-octave A. When I hear that the combination tone A matches the higher A string, I know that the A and the E are a perfect fifth apart (in tune). Awesome video man. Best video I’ve watched in a while 👍
Excellent! Thank you for creating this.
THIS IS QUALITY MATE! Even though Im quite skinned I am going to become your patreon today. Thanks!
I couldn't hear the lower tone but what I did hear hurt my ears.
You need to know what you're listening for. The lower tone does not sound like it comes from the speaker but just sort of sits in your ear. Both ears construct them seperately and a bit differently so you can't locate it like the original sounds.
Todesnuss
I guess, that's why I can't really hear it. I'm trying hard to not hear the tinnitus that's in my left ear.
I can hear it in the All Star thing but not in the mess around 2:50
edit: nvm it's just breath noise I can't hear it
EclecticHillbilly You need better speakers and not being afraid of your neighbours. I heard it only the second time when I used my TV. The volume of the phone is not enough.
You need to turn up the volume
What an incredible video. Well produced, interesting, educational and freaking hilarious
I only heard the combination tone when I put my ear right up against the speaker, and even then I... 'heard'? it? coming from the physical structure of my ear, if that makes any sense. It pretty clearly wasn't actually coming from my laptop. It was trippy.
Nice!
Did you help make that intro?
nice intro fam
Wait, never mind. It said so in the description
Watching you do videos on stuff that you learn in sound design is amazing
i really like the new intro, man! really nice
Sorry but that new intro just stole all of my attention
Adam, I really like your videos but you need to be really careful when explaining phenomena like this. It seems that you are confused about the difference between beats and intermodulation distortion. Beats are just a low frequency case of two sine waves added together. Mathematically they can be explained very simply:
sin(a) + sin(b) = 2 * sin( (a+b) / 2) * cos( (a - b) / 2)
When a and b are close together, the average of the two (a+b)/2 will be roughly equal to either of them, and the difference will be a low frequency. If the frequency is low enough, it'll be perceived as a simple modulating effect - a tremolo, as is known by guitar and synth players. Note that, in the case of playing two piccolos slightly detuned together, or using recordings and playing them through 2 speakers, it is a physical process: the sound waves "add" up, because air is (for SPL we're interested in), a linear medium. Note that if you analyze the spectrum of two pure sine waves played together (which in mathematical / physical terms means summed together), assuming a linear system, you will get two peaks at frequencies a and b. There will be no other frequencies. So for your experiment at 6:04, it is obvious that you will not measure that "lower" spectrum.
So what is intermodulation frequency? IMF happens when one part of your system is non-linear. In the case we're interested in, it will be the human ear. (It often happens that transducers - like the human ear, which converts physical motion into electrical energy, but also microphones - are a source of non-linearity. This leads to all kinds of interesting problems.)
First, let's talk about what a linear system is. Roughly speaking, a linear system has the property that it will never "create" new frequencies: it can only change the relative amplitude of a signal's frequency. For example, equalizers can be thought of as stereotypical linear systems.
An equation that models a linear system if it is given the input x(t) such that
x(t) = A*x1(t) + B*x2(t)
then, its response y(t) is
y(t) = A*y1(t) + B*y2(t)
In practical terms, this means that for example, for an equalizing filter, you can add two sounds together (if you're doing this digitally, you have to have enough headrooms so that they don't saturate - clipping is a non-linear effect!) and then equalize them, or equalize them separately with the same filter and add the results, and in both cases you'll get the same sound.
Now that we know what a linear system is, we can define a non-linear system as one that doesn't follow that property. Given some mathematical conditions that hold up for the real-world phenomena that they model (sound, but also true for sound-as-voltage, digital sound, ...), we can, in particular, show that, given two sinusoidal inputs of frequency fa and fb, the response of such a system will contain frequencies at ALL linear combinations of fa and fb
ka * fa + kb * fb, where ka and kb can be any integer. This generalizes for sums of N frequencies as well.
In particular, a non-linear system can create, given input frequencies fa and fb, a *difference* tone at fa - fb. The amplitude (and phase) of such a difference depends on the system. For the human ear, for example, which is a non-linear-but-almost system, the amplitude for frequencies fa and fb will be much higher than those of the intermodulation product, which is why you need high SPL to notice the difference tone whose amplitude is lower in comparison.
As far as I can tell, the presence of intermodulation products (which is a bad name, since an IMP is really a sum - product comes from the integer factor here - NOT from a modulation of one frequency by an other!) is a *physical* property of the system.
The last effect you mentioned, "resultant tone", is another different beast. It is a psychoacoustic effect, due to the way our brain perceives tone. As you explained many times, the pitch of a sound can be said to be, to first approximation, the same as the fundamental of in the spectrum of that sound. (That is, if the spectrum of that sound is harmonic, which means that, the sound contains frequencies at multiples of the fundamental f, 2f, 3f, ... with various amplitudes for the various harmonics. A non-harmonic sound, like percussions often are [think, a clap], will not really have those sharp peaks in the spectrum at multiples of the fundamental, but will rather have a mashup of many frequencies that aren't multiples of each other.) But, the way the brain detects pitch, although the proper mechanisms don't seem to be understood fully, takes into account the harmonics AND the fundamental. And the idea behind the resultant tone technique is to use the fact that, the brain (which is the last piece of the system in terms of auditory perception), will be able to reconstruct the fundamental if you give it all the necessary overtones.
To give an example, if you play a note at frequency 2f on an organ, and its fifth, which will be at frequency 3/2 * 2f = 3f, then when you add them together, you'll get a spectrum that has components at frequency 2f, 4f, 6f, ... (harmonics of the 2f note) and 3f, 6f, 9f (harmonics of the 3f note). These harmonics, when you reorder them, give you 2f, 3f, 4f, 6f, 8f, 9f...
This is almost the harmonic series for a note at fundamental frequency f! (We're missing the fundamental f, but also 5f, 7f, ...)
The brain will be able to reconstruct this and make you perceive it as a single note of frequency f. This is called "missing fundamental".
Note that these 3 phenomena happen at different places in the chain: beats happen because the air is a linear medium, IMF happens because your ear (the transducer part that converts sound pressure into electrical energy) is non-linear, missing fundamental happens directly in the "pitch-perception" part of your brain.
It's important to distinguish between the 3.
epsyloN you lost me at “mathematically they can be explained very simply”
Nice comment i wish he actually showed proper math and physics in his videos. Music is so intertwined with math and physics its sad that not enough musicians have the math ability to go along with their musical skills.
Wow
epsyloN I see math and a wall pf text so I'm just gonna pretend like I understand you and just like your comment.
[ Applause ]
I wish you would or could do a video on this, cause a lot of people are gonna get lost on the amount of text before even having a chance to get lost on the actual content of it. Fantastic explanation, though. Adam's vid didn't make much sense to me in some places, but this does. Thanks for going to the effort of getting all of it written out.
I’ve been hearing these for ages and always wondered what they were and if it was just something wrong with my ears, so glad it’s not just my tinnitus
Great content! Keep up the good work @Adam!
So, I might be wrong here, but as many people have commented before, acoustic beat (or any other wave interference) is not a linear process because of trigonometric identities. However, the spectrum analyser algorithm, the Fourier Transform, is linear. So, unless you filter it or do some other stuff (envelope recognition, like in AM radio), the beat frequency will not show up in the spectrum. However, it is there, and if you look at the waveform recorded by the microphone, it'll be there, because wave interference is awesome.
That intro reminded me of P.T.
This episode is so GOOD!
Love the new intro. Love the Channel
Actually I had always done something alike, turning a 5th into a 4th (switching octaves) in order to not tune my guitar down.. And there you have, a power chord that sounds one octave lower
I must've replayed that new intro a hundred times. Damn. Makes me feel things.
Hey adam, just wanted to say thank you for your channel and the hard work you put into it. I find every one of your videos simply fascinating. The theoretical videos are really helping me take music theory to the next level, and these vids like this are so, so interesting, especially from a philosophical standpoint. So thank you, I can tell you put in a huge amount of time into each video, they are all as awesome as the next.
I've come across this before in my own music by accident, I don't exactly know how but it's a surreal feeling hearing notes in your music that you didn't actually put there. This gets me one step closer to understanding it, even though I can only actually comprehend a little bit of what you're saying with my current musical and frequency knowledge.
The piccolos were pulling my ears out.
gr8 intro
I've been singing into my saxophone to growl for years. How did I not know about this! Keep the videos coming dude!
Awesome!!! More of this... been waiting to see this video since Mr. Cooper told us about the thiree part duets in AP Music back in the twentieth century...
I perform Nocturnal Emissions every night. That's.......that's the same thang right?
Does that mean I can use the same towel to clean up? It is starting to get a bit stiff. There's a crackling sound when I go to fold it. This could be my inner ear making this sound tho?
John Thompson does it smell of old spaghetti carbonara?
+Twiggyay
I'd say it's more of a pungent 'cuttlefish and asparagus' odor. With just a subtle hint of saffron.
Odd, because the 6XL shirt I stole at work solely as a receptacle for "carnal desires" has a distinct creamy odor of dairy and salted pork, Italian style.
I wonder why for me, a severely ethinical Caucasian, my unwashed jizz rag has a distinctly rural East Asian olfactory influence. What, may I ask is your ethnicity, for to determine the source of its southern Europe or Italian flavoring. Quite fascinating, indeed. This.......is the most interesting thing I've ever discussed.
Adam is my favorite
Heard from a little birdie that you would soon be doing a video in SBL. I'm really hyped for that! Love what you are doing here and I love the new intro.
had never watched one of your videos with headphones before and now I have to go back and see if your background music was that badass in other videos cus I was not paying attention to you at all the first time I watched this 👌
I was really worried there for a moment that you weren't going to chant bass.
spoopy ending tho...
Much love adam! You are a great teacher and a good friend. Waiting for the next single! Sungazer!
Man thank you so much for all these videos ♥
As someone who hadn't had the access to higher class music education , your videos reveal to me a whole world of wonder with your endless knowledge explained and
touching most of the levels of each subject.
FANTASTIC!
G'day, on a didgeridoo you can do a tripple sung multiphonic.
You have the tone produced by your lips (like a trumpet), you can then sing and then you can roll your tongue. The trick is to roll your tongue fast enough that it sounds like a discernible note and not a bloody frog in a drain pipe.
Is it harmful for the ears to make them produce tones that way?
roberto campos Ears produce them everytime you hear loud sounds, so that's absolutely normal. It's just that that witch lady makes your ears produce sounds in a certain way to make music.
As long as you don't turn the sound up too loud and don't listen for too long, you're probably fibd
Hey! My comment isn't really related to this video, but I just feel the urge to say that I discovered your videos only a few months ago and I've loved each and every one. Your content, editing, teaching style, humour, authenticity, musicianship, knowledge of your subject are all second to none. I'm currently studying music in Manchester England and have shown a few other music students your videos and they have been well received.
Thank you so much for your contribution to TH-cam and keep doing what you're doing! because it's fucking awesome!
thought about the moiré one before. great vid as always!
3:46 THE LICK REIGNS SUPREME
i love all the subtle references
Your kind of the "audio" - Vsauce :)
I basically did the exact same thing Tartini did: noticing these third tones when intonating double stops on my violin! They really help me get my chords in tune yet I never knew what they were called. Thanks!
THIS WAS SO COOL!!! I never knew what these tones were. This happens when you sing sometimes, when you hit a pitch very accurately and I’ve never known how to explain it
you can do this most easily with an electric guitar on overdrive; just do a unison bend on the high E and B strings and you should hear a rather loud undertone that is always the highest pitch whose overtone series contains the actual played pitches
i know because i've played a bass solo on guitar live like this and the plebs in the audience with their untrained ears couldn't figure out what was happening lmao
Uselube at first I thought about that too, but I think that's different. It's a subharmonic because it descends while the bend ascends. It's awesome, but I think it's not the same thing...but what do I know?
I'd guess non-linearity in the guitar and or amp itself.
nah you can hear the same thing with an acoustic if you know to listen for it
Could be the bridge itself flexing or something, leading to nonlinearities.
That second paragraph was quite autistic.