These Musical Illusions will Make You Question Everything

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S N A P C H A T: Brettybang | Eddy.Chen

[@linkthai1995]

Eddy: *with perfect pitch* "That was obvious" Brett: *sweating* "uhh.. yeah... obvious"

[@deathbypigx3h]

I’m definite Brett on that one lol

[@jacobthemaster66]

It wasn’t obvious the second time either

[@alinagranger6757]

Same... Obvious, Right???...

[@sibbi-cw8yj]

Eddie from stranger things with a barrett m82

[@Jz-vz8ky]

@@jacobthemaster66 i don't get the illusion at all, they sound like nothing recognizable both times

[@ujicosnail]

Them : we all heard up, not an illusion, next Me, who heard down : 💀

[@j-hopesmochi2852]

Yessssss sameeeee

[@marijo268]

samee fist one was down, second was up

[@GilsonAlencarGAP]

both of them I heard down

[@stephaniegamboa3329]

I heard the first one up and the second one down 😅

[@sophieporzi6116]

Yeah! When they said no paradox here I was like 0_o

[@schleeeep]

I think the reason for why Eddie doesn't hear what Brett hears is because (and I'm not sure if I remember correctly) but people with perfect pitch have more trouble distinguishing between notes of different octaves compared to people without perfect pitch because they focus more on the pitch itself (or pitch chroma). And that could also explain why Eddie had no difficulty with the "Mystery Melody" and Brett did because the different octaves didn't really affect what pitch Eddie could hear but it did for Brett. Man this is the smartest I've felt since the start of the year.

[@saplinggirl1027]

underrated comment

[@vantannie9291]

up you go!

[@leanneclulee6787]

what happened at the start of the year

[@schleeeep]

@@leanneclulee6787 i... have no idea

[@good8lood598]

I have absolute pitch and I fucking FAILED the mystery melody one ☹️

[@nellefindlay]

That talking piano thing totally reminds me of how cochlear implants work. Basically I'm deaf and had electrodes implanted in my ear. I can only hear 22 distinct pitches and at first it sounded like a robot alien but after a while your brain adapts and you learn to hear it as speech. It's pretty cool. Basically there are thousands of people in the world who hear like the talking piano. Thanks for the subtitles BTW.

[@ElliLavender]

cochlear implants are incredibly fascinating. If I may ask, have you always been deaf and if not, can you tell how close people talking sound to you now vs how they sound naturally? (I assume you get questions like this a lot, feel free to ignore if you don't wanna answer)

[@hanthonyc]

I knew that cochlear implants helped pitch recognition, but I didn't realize it was that subconscious brain process that helps it work! My family friend's son has a cochlear implant, but as far as I remember, it mostly just helps him to lipread. The fact that you knew it sounded tinny at first- can I ask if that's because you weren't born (fully?) deaf? Would it make a difference as I'm assuming? Since I imagine you'd have to know what voices DO sound like, for your brain to fill the gaps.

[@callme_peach8018]

@@hanthonyc I believe the word you are looking for is hearing impaired when you say not fully deaf as that is what I am, if not could you elaborate?

[@nellefindlay]

@@ElliLavender Hi, I haven't always been deaf. It definitely takes some getting used to but now I sometimes still notice that things sound a bit robotic but because that's how I hear everything I just don't really notice it after a while. I actually have a lot of videos on my youtube channel about cochlear implants and I have a cochlear implant simulation if you're interested. I hope this answers your question.

[@nellefindlay]

@@hanthonyc Hi, I lost my hearing as an adult so I do know what things are supposed to sound like so it's easier for me to describe the sound as opposed to someone who has never heard anything else. The results with cochlear implants vary a lot and I think most people with them still rely on lipreading for some things especially when there is background noise. I have lots of videos about it on my channel if you're interested. Nelle :)

[@jade3519]

And yet, Eddy’s perfect pitch still shines through illusions

[@sarabensouda7422]

kzbin.info/www/bejne/m3THl6Z7hceDetE👈👈👈🎹

[@BlueMeeple]

Actually, I remember reading that perfect pitch gang can have difficulties recognizing different octaves. That would explain the differences between Eddy and Brett here.

[@ma3ahumma3ahum94]

kzbin.info/www/bejne/gniamGZ3jrV2qMk

[@vanivashisht7305]

_flexes subtly_

[@stonecoldpizza]

@@vanivashisht7305 *gets subtly flexed on

[@PuffleBuns]

Today I learn that perfect pitch tends to ruin most musical illusions.

[@jimmygennaro5693]

As someone with perfect pitch, I can verify that fact :)

[@Raffael-Tausend]

me without perfect pitch, i don't hear a few of them either

[@stevechase8522]

@@sofanofafalafel2890 Right, it's just another way to perceive sound. People with perfect tend to not be able to tell which pitch is higher than another.

[@valebliz]

@@jimmygennaro5693 i know you have perfect pitch, cause you said it.

[@youtubedeletedmyaccountlma2263]

@@Raffael-Tausend I don't believe I have perfect pitch but almost none of them work on me X(

[@BarEscm]

I found he ilusion of the scrambled notes really interesting. I revealed to me that to people with perfect pitch melodies are a succesion of notes (that's why Eddy can identify them, even with the notes in different octaves), but to most people (with no perfect pitch) melodies are recognized by being a succesion of intervals between the notes. In my case, I had no idea what the melodies were until they played them in their normal pitch. On the other hand, I saw the dalmatian instantly...

[@burgundy.v]

Same

[@Cooki_Cat]

I feel like it would be easier for me if it was an actual instrument and not synth.

[@ADarkAndSpookyNight]

it's funny because i struggled so much with the auditory pitch ones, but I saw the dog before I saw anything else in the picture, like I could see a full image when they first showed it. I'm a visual artist and I don't really play any instruments, so I think that's really interesting.

[@allinory]

Same! I'm also an artist, and I see images in pretty much any abstract blotches of color (like clouds, bark of wood, carpets, you name it) and I saw the dog (well, I thought it was a puma at first) walking in a field with a tree, a whole picture, right away. And I thought, how can the guy say it's meaningless when there's so much to see, lol

[@noone-gf5op]

exactly me. visual artist and saw the dog in a split second. was having a good laugh at them struggling to see it somehow, especially after having a mightly difficult time hearing the melodies before😭

[@franceskinskij]

shepard tone sounds like someone is readying a massive attack forever

[@yeaolon]

*Gets ready to get ready for being ready*

[@abigail40]

It sounds like me having an existential crisis

[@DemBigOlEyes]

Shepard tone sounds like someone is readying a Mass Effect forever. I'm sorry.

[@orangehaze74]

Its like an episode in Dragonball when some is about to blow up a city in 10 minutes.

[@yeaolon]

@@orangehaze74 look it’s spongy

[@lls1980]

“you are going to hear something mysterious melody” *plays ode to joy*

[@sarabensouda7422]

kzbin.info/www/bejne/m3THl6Z7hceDetE🎹👈

[@lls1980]

@@sarabensouda7422 bruh stop scamming

[@billyt8868]

that wasn’t the “mysterious” part… it’s supposed to be a familiar song. that’s quite literally the point.

[@lls1980]

@@billyt8868 ik

[@lls1980]

@@billyt8868 its a joke

[@JithinJacob333]

Fun fact: For those who don't know, the images in the first two 'illusions' are called a Mandelbrot set. Look it up. It's fascinating.

[@Unlitedsoul]

2:55, the tempo never actually changes. It's simply playing repetitive, shorter notes/beats. You can hear that beat strikes are being removed every few cycles, and less is actually happening. When it seems to reset, it's simply skipping a measure to keep the previous momentum in your head, but returns to the longer rhythm and begins anew.

[@capybaraa5206]

Eddy : hears ode to joy immediately in scrambled version Me : can't hear the melody in the scrambled version even after it showed the normal melody

[@sarabensouda7422]

kzbin.info/www/bejne/m3THl6Z7hceDetE👈🎹

[@claudialicata3821]

I knew I wasn't theonly one lol. Same 😂😂😂

[@novemberninth4392]

Glad I'm not alone

[@maurmi]

Me too

[@shawn980]

I have perfect pitch and even I couldn’t hear it.

[@yanlim18]

Alternate title: Editor-san is discovering new effects.

[@yanlim18]

Thank you for the likes！I first time got so many likes！

[@Dhanu_lol]

LMAOOOO

[@dadmitri4259]

for the octave one, i have speakers instead of headphones, and there's a really weird effect if I turn my head. I think I figured it out. both speakers are flipping between two notes in an octave, but exactly 1/2 out of phase, so both notes are always being played at the same time, just alternating ears. you can test this by only listening to one speaker at a time.

[@kiiturii]

that's pretty close to what I figured while wearing headphones, the tones are played in both ears and the clicking sound you can hear is what's switching, making the illusion

[@RandoPassingBy]

11:41 I’m hearing both. Both going up and down. Basically you just go from an octave’s distance to two octaves’ distance. For example, going from G4, G5 to E4, E6. The first one, went from Bb to E natural, is a perfect 8th going to a perfect 15th (aka from one octave to a double octave), and as a Bb to E natural AND E natural going to Bb are both diminish 5th, which are same interval (aka distance), it would sound trippy for a lot of people. Guess it doesn’t work on a perfect pitch like me >:D

[@abigail40]

“It keeps going higher” Me: if my grades could be like that it would be a dream come true

[@epsilon9724]

Woah you wrote it 10 secs ago

[@abigail40]

@@epsilon9724 ayoo haii

[@hellosonnenblume5120]

Fr💀

[@beautyboots11]

Same here 😂

[@yca4309]

me too :”””

[@oktamayosua9389]

New Character Unlocked : Vanya the Behind Camera Guy

[@windowcleaner3609]

@@Piccolo_Beats ok?

[@piperpotts1969]

Is Vanya Editor San? @TwoSetViolin ????

[@thebluest_blue1145]

@@piperpotts1969 don't think so, Editor San is a girl and we heard her voice in the among us video

[@ladym.7594]

Guys I found Vanya. Dunno if it's the same Vanya but there was a Vanya guy in a much older video.

[@JayJaymusic]

@@ladym.7594 Vanya for me was always a female name, tho. I was caught in the illusion lol

[@rockgoose]

On the one with the Bluetooth headphones I had just one ear bud on and it sounded like a solid tone. It didn't change pitch, but when I added the other one it started to change pitch. Magic

[@SuAva]

I’m left handed and heard the high pitch the ‘loudest’ on the upbeat in my left ear. Funny that Eddy’s perfect pitch is stronger than his brains tendencies as both pitches alternate equally in both ears and Eddy just literally hears it as it actually is 😂

[@DonaldFromKingdomHearts]

One that I've noticed myself is that, when you're tapping a "melody" on something with your hand, the pitch actually only changes in your head. It's because your brain sets up an expectation

[@reverseli]

That’s just a thing for everyone though? It’s like a game of charades. To the person acting it’s obvious, to the people guessing you’re trying to act out the 76th future president of capitalist Russia during the next nuclear war.

[@DonaldFromKingdomHearts]

@@reverseli yeah it's a thing that happens to everyone. But it's not just abt it being obvious, it's that you actually hear a shift in pitch when there is none

[@sugarkats21]

Exactly what I thought to myself after the last illusion. And the sounds-like-speaking effect works in a similar way. Not just with pianos but with anything that could slightly resemble speech, if you see subtitles along with it, then the words become pretty clear where there are no actual words. Good ol' brain filling in the gaps of knowledge.

[@GremlinSciences]

That depends. If you're only tapping in one spot and with constant force, the note won't actually change, but if you move the point of impact or change the force then it might, you can also change the angle you tap at. Many percussion instruments work on the same principles, you can produce higher pitches by hitting closer to the anchor/mounting point and lower by hitting further from it, you can also increase the pitch slightly by using a harder mallet or hitting harder. It is easier to just get a rhythm and match the tone in your head, but you definitely can actually tap out the melody properly so others can hear it too.

[@scribblecloud]

YESS thats exactly what i thought always too

[@dushdj8947]

I remember I accidentally discovered the tritone paradox because me and my mom got into a discussion over what sound Duolingo made when you completed a lesson (she heard a sound that went high low, but I heard low high). When I played it through headphones I found that the second note has a high and a low note at the same time, and it seems to be mostly random whether your brain will prioritize the high note or the low note.

[@juliaostowicz6501]

Whoa! I always thought it was down up? Will check next time. Cool!

[@rsaettone]

Sounds like you may be adopted if that little folk legend is true!

[@pidge8747]

This happened with me and my brother with crab rave XD

[@morganbloczy]

I heard both tho

[@akinamurasaki736]

I also hear it both ways

[@shadowcadence378]

With the tritones one I can hear both ascending and descending simultaneously, like a chord progression where the left hand (if it was on piano) is going up and the right hand is going down. I'm pretty sure that's literally how the illusion is created. With the octaves illusion, it sounds like Brett describes if I play it on my phone speakers, but through headphones I hear an octave but rather than high and low notes alternating, they play simultaneously and the order of the notes switches sides. This is actually what you will hear if you only have 1 headphone in - alternating high and low notes, with the order of the notes switching depending on whether it's the left or right channel. So in conclusion, my brain is interpreting the information 100% literally, I am immune to illusions. Muhahahaha

[@bxyhxyh]

Piano trick is like Churchil's speech. When you have subtitles, you can understand him perfectly. But without subtitles, it feels like gibberish.

[@justary_9790]

*_”We’re built different™”_* _-Twosetviolin, 2021._

[@sarabensouda7422]

kzbin.info/www/bejne/m3THl6Z7hceDetE..

[@katam6471]

Need that on some merch.

[@justary_9790]

@Sankalp Gupta done hahaha couldn’t find the symbol thing

[@diyakannan07]

The people who disliked this were the ones who went crazy listening to the Shepard tone

[@sarabensouda7422]

kzbin.info/www/bejne/m3THl6Z7hceDetE..

[@carcasapistacho]

I disliked it, because they didn't provide sources from where they got the illusions

[@sophiarosales7159]

@@carcasapistacho google is free

[@fryderyk.chopin]

@@carcasapistacho they told the names of the illusions..

[@carcasapistacho]

@@fryderyk.chopin y'all don't seem to comprehend that the problem is, the videos used to illustrate the illusions belong to someone else and need to be cited. What if that video was yours and you didn't get credit for it?

[@upplsuckimcool16]

I literally had all types of shit written about what I thought this alternating sound was, but then I finally did the smart thing and listend to the tones with only one ear phone at a time HAHAHAHAHA. it's EXACTLY THE SAME TONE IN EACH EAR but when you hear on both sides it sounds like the high pitch tone is only on the right side. And what's NUTS is that they are NOT alternating like I would have thought. If you paus the video and listen to the last tone on one ear phone, the next tone comes up on the next ear phone proving they are not alternating.... which makes this illusion even more freaky than I thought when i thought they were alternating. NOW THAT WAS AN AURAL ILLUSION NICE!!!!!

[@organist1982]

When the high tone sounds in one ear, the low tone sounds in the other ear at the same time and then they switch, so the high-low patterns are 180 degrees out-of-phase between the left and right.

[@katybeth3129]

I heard the tritone paradox going down XDD It was kind of hard to tell though tbh

[@abigail40]

“Ode to joy” Me: **jaw drops before my brain processes everything**

[@jrexx2841]

@Hamza Mzali Seriously, why do you keep on self promoting your channel here on Twoset?

[@leoslego5965]

I wish Twoset would block them

[@Kaneele_]

@Hamza Mzali dude, you realize that no one's going to respect you right? It doesn't matter how many views you'll get or if your playing is any good, you'll still be known as "the guy who spams on twoset's videos."

[@abigail40]

“Illusions don’t save your intonation” -Brett 2021

[@sarabensouda7422]

kzbin.info/www/bejne/m3THl6Z7hceDetE.?

[@DarthTwilight]

With that octave illusion, I guess they were discluding people that are ambidextrous, because I also don't know where to put the high tone. It literally feels like it's in the middle of my head

[@emilyrln]

The mixed-up melodies and pictures threw me for a total loop lmao. Love the talking piano! It reminds me of the video where what you hear depends on the words on the screen even though the mouth movements are identical.

[@jesseavila258]

*Rushes to grab headphones as to not disturb everyone at 6 in the morning*

[@DailyProjectSekai]

Yes.

[@greenclover4806]

It's night time here

[@DailyProjectSekai]

@@greenclover4806 wow! Where are you?

[@sarabensouda7422]

kzbin.info/www/bejne/m3THl6Z7hceDetE👈

[@greenclover4806]

@@DailyProjectSekai Philippines

[@ButterOps]

People with perfect pitch have a hard time figuring out octaves, this explains why he had an easy time on the ode to joy one and couldn’t hear the low and high in the alternating one.

[@sofanofafalafel2890]

Have you seen Adam Neely's video about the downsides of perfect pitch

[@youtubedeletedmyaccountlma2263]

I don’t believe I have perfect pitch but I’m still having hard time figuring out the octaves =.=

[@Ennello]

Truth is that both left and right are alternating between the low (L) and high (H) note, but in opposite ways, so it's: L: L - H - L - H - L R: H - L - H - L - H The left- and righthanded thing is a myth, really. You can be motorically dominant on one side, but equally auditorily developed on both sides.

[@joelstephenson8017]

I wander what they hear when they hear music over many octaves😮

[@lamsect]

im far from having perfect pitch but i still thought that ode to joy and the other song was obvious

[@ABaumstumpf]

For the tritone-"paradox" - there are many harmonics there, it is neither going up nor down, just all different frequencies. As an analogy - if you first have all odd numbers and then switch to all even numbers - did you add 1 or subtract 1 from all of them?....

[@organist1982]

It would be more accurate/specific to say that there are many "octaves" rather than "harmonics," but I like your odd-even analogy!

[@ilene_music]

The mystery melodies was really crazy! I was able to get the second one by pausing after each note and singing the tone in the only octave comfortable to me hahaha

[@sahanachannel]

“Right handed people hear the high tone on the right, regardless of how headphones are,positioned.” Me who only used one side of the headphones: 😏

[@hanklehu4039]

OH MY YOU ARE A TRUE GENIUS

[@sahanachannel]

@@hanklehu4039 TY but it’s just a habit :))

[@mahatmaniggandhi2898]

but....how?😰

[@ethanweimer-kopf6907]

If you listen without headphones it's just a flat sound xD

[@sushih3302]

Me who is right handed but hears the high tone on the left: 👁👄👁

[@PowerfullPC]

Fun fact: the "Talking" Piano is a demonstration of the principles behind Fourier Analysis of a signal. Fourier Analysis involves breaking down a signal, such as vocals, into the constituent frequencies (if you've ever seen a spectrogram of audio, that's a visual representation of a Discrete Fourier Transform). In one phrasing, it moves the signal from the time domain to the frequency domain. In another, things like instruments and your voice don't play a pure tone like (ideally) a tuning fork. There are overtones and as you talk, your pitch changes both drastically and subtly. Fourier Analysis tells you all the mathematically pure tones that were present in a piece of audio. If you play the pure tones you get from a Fourier Transform over each other, you will reconstruct the original audio produced. This is helpful in various compression algorithms. Anyways, each key in a piano creates a specific tone, right? There are overtones, but the fundamental is the most strong frequency present. Thus, if you know the frequencies involved for a voice clip (using a Fourier Transform), you can attempt to reconstruct it using a piano to play the various constituent frequencies. Of course, a piano doesn't have the infinite range of frequencies to play with and things like phase can't be easily controlled, so it ends up being **off**. But, with the right prompting, your brain can fill in the gaps very easily. It's even possible to hear the encoded vocals without prompting, but it can be harder. (disclaimer: there are probably some inaccuracies in my explanation of Fourier Analysis)

[@Checkmate1138]

Isn't this basically what Charles Cornell illustrated with his funny piano accompaniment to internet memes?

[@PowerfullPC]

@@Checkmate1138 I'd say that's close, but not quite. He more follows the main pitches of the cadence of what is being said or happening. This talking piano and Fourier Analysis are more about recreating the original audio waveform. Charles Cornell creates a musical interpretation that follows the events of the memes he's covering. If you took away the original audio underneath his videos, it'd be far more subtracted from the source than this is an example of. That's how I view it. Edit: another phrasing is, I think Cornell's works have more musical interpretation than straight recreation.

[@arturzmienko6096]

It deals with brain short and long term memory too that why on the internet you have something called " top images you can hear" for example we all seen so much coffin dance memes that when we see these guys we can almost hear in our minds Astronomia track

[@lilibella8471]

The talking piano reminded me of PAMA from Minecraft story mode if anyone knows what I’m talking about lmao

[@aa-jh3gc]

Fourier analysis is the right one to explain this talking piano ilusion. While the piano has limited tones compared to our vocal cords, if we imagine a piano that has unlimited range of tones we can simulate everything we said correctly using that piano only based on the spectrogram.

[@Gnurklesquimp]

If you like the Shepard tone, Mario 64's infinite stair theme is an example where notes try to achieve this illusion, instead of just rising/falling pitches I didn't bother putting on headphones, but I also heard the flat in the same octave 11:07 There's another one btw., combination tones: a psychoacoustic phenomenon where two simultaneous tones create a fake one in your ear/brain (Can't remember), iirc it's particularly strong or at least easiest to pick out with pure sine waves.

[@DynamiteProd]

The talking piano is like metal music. A lot of people can’t understand the growling but once you read the words you clearly can hear the them during the growling.

[@cevune-8652]

"right handed people will hear the high tone to the right side" brett: "oh that's messed up" me: 'okay but it doesn't sound left to me, it just sounds like the sound is center...?' "left handed people won't have a consensus on which side the high tone is coming from" me: "oh that's messed up"

[@joekrafft7125]

i’m right handed and i just heard one tone not two separate

[@LOS18]

I'm right handed, heard the lower tone on the right

[@georgiadavies147]

I'm left handed and heard low tone on the right.

[@hisnameshallbesqishyandhes9672]

Yeah, I'm right handed and hear a loud high tone continuously on both ears and a comparatively silent low tone on and off on my right ear...

[@rievenailo]

I'm ambidextrous and I heard notes

[@abigail40]

“The bluetooth doesn’t work” *Return of twoset boomers 2021*

[@sarabensouda7422]

kzbin.info/www/bejne/m3THl6Z7hceDetE🎹👈🎹

[@celineee4513]

what a roastt XD

[@piperpotts1969]

What’s really trippy is that if you take one of your earphones out during the octaves you just hear a single note

[@brennangum6236]

The talking piano without subtitles I couldn't understand most of it but I could make out some words without help such as "protected.". That was crazy

[@matthewreed8036]

Twoset: “this isn’t an illusion it goes up” Me: “… that definitely just went down”

[@lonewaer]

Yep, I could hear it both ways. I think it's got to do with the harmonics of the notes we hear, and how the initial note's harmonics are filtered. If I had to guess the note that's actually being played, I would guess it's none of the two that we hear, but the one 2 octaves lower than the higher of the two (or the one 1 octave and a fifth lower than the lowest of the two). And the two that we hear are respectively harmonics #4 and #5 of the fundamental.

[@adhithirajesh9685]

Glad I’m not the only one lol

[@ftumschk]

Same here. Definitely down!

[@evelynparker6200]

SAAAAME I WAS LIKE "WHAAAAAA"

[@rome8180]

Yep. It annoyed me that they assumed they heard it the "correct" way simply because they both heard it the same way. It's definitely a paradox. I was able to hear it both ways. There are clear harmonics or overtones.

[@ethanotto5062]

That up or down tritone illusion is the same as the yanny/laurel illusion. There are notes going down and notes going up laid on top of each other. Also, the reason some of these didn't work on Eddy is because of his perfect pitch. His brain recognizes what the note is over what octave it's in, so he isn't thrown off as easily by jumping octaves. One more thing, I couldn't tell what the scrambled songs were before hearing the regular versions, but I immediately could see the picture of the dog. I guess my brain is more visual-based than audio-based.

[@day9811]

I was going to say the same thing! I'm definitely more wired to analysing visual illusions rather than auditory. This is so cool

[@ethanotto5062]

@@day9811 I love your profile pic btw

[@edithhubner7097]

The first time I heard the up or down tritone it went up for me but the second time they played it it went down… what does that mean?? Am I…… Built different?? Lol

[@joelstephenson8017]

I saw the dog in reverse, and assumed it was some kind of big cat that I'd see if the pic changed its angle😐

[@joelstephenson8017]

@@edithhubner7097 samme.

[@zekepowers]

Great video. Got here looking up Shepard Tone. Subscribed

[@misterdinner3648]

The thing with the alternating octaves eddy couldnt hear because he has perfect pitch. People with perfect pitch have a really hard time intuitively distinguishing between notes on different octaves.

[@alyssejazz]

Ehm... The paradox thing when they said it's not a paradox... Well it actually is, cause Brett and eddy heard the pitch going higher, but I heard it was going lower. So I do think it is a paradox

[@CJ-rx5fi]

Me too!

[@rekal7775]

Yes, same here

[@eldris37]

yeah me too

[@aleksinuutila2315]

I can hear both, depending on which Im anticipating to hear. The same goes for the relatively recent TSV video about Charlie Puth and his perfect pitch. He hummed a tone bending less than a semitone up, and Eddy hears him go from E to a lower C#. I can hear him go from E to slightly above E or from E to C# depending on what Im expecting to hear.

[@alex_squeezebox]

I’m not entirely sure but I think the Tritone note was an octave so it could technically be both up and down depending on how you hear it

[@dharmamuthalagappan5157]

As a mathematician and a musician, this is brilliant 😂😂 for those who don’t know, the first illusion was the Mandelbrot set

[@EwanMarshall]

this mathematician recognised that immediately :D

[@stephensirait5146]

and the talking piano is some big brain application of discrete fourier transform lol

[@HarvestRidgeHomestead]

I love the Mandelbrot set! So cool to explore! I’m not a mathematician though 😄

[@lhemz2366]

Aha. The Mandel-broccolli of Mathematicians brought about by the imaginary numbers (squareroot of negative one) that were so despised by many during their Algebra days. Fractals (like Mandelbrot and Julia sets) are so fun that I pursued graphic design instead of Digital Signal Processing. It is now used in textures of most of our favorite CG games and movies. And in forensics when decoding that blurred photo of criminal's faces and plate numbers.

[@leroysanchino]

Calling yourself a mathematician is about the most cringe thing I’ve heard all week

[@megalodongle]

The shepard tone is multiple rising notes being played, but just as the highest note fades out, a new low note fades in. It won't get incredibly high-pitched, it's just continuously rising.

[@PteropusAlecto]

The shepherd tone, if it is how you described it, is a lot like how an accordion with standard bass works. When you press a bass button, the note sounds in multiple octaves, and usually the octaves start on different notes, so when you play a major scale over and over it sounds like you keep going up when in reality your ear just starts tracking a lower octave at some point without you realizing it.

[@ninjasheep8722]

Day11 of asking Twoset for another charades video.

[@sarabensouda7422]

kzbin.info/www/bejne/m3THl6Z7hceDetE..

[@bluedanoob7494]

@Ninjasheep would also love for this to happen again! But if they were, what criteria can you suggest?

[@ninjasheep8722]

@@bluedanoob7494 Honestly don't know, feel like they've already done all possible charades. Maybe they can just start from the beginning again xD

[@auniramlee6406]

@@bluedanoob7494 maybe guess the different fast food chains?

[@jankisi]

How about Landmarks but they must not play a piece that's from the country the landmark is in. Movies (they have done anime so why not) Classic childhood cartoons Prodigies (though they might just accidentally insult them) Centuries but they can't play pieces written during that century Decades, same restriction Shows/Movies/Dramas they have roasted in the past *Bubble tea brands* Famous conductors ...

[@abigail40]

“Forced to listen to that 24/7” Me: **flashbacks to learning about sound torture in prison**

[@mariaanmo]

Either you went to prison and learned about sound torture there or you learned about the sound tortures used in prisons lmao

[@abigail40]

@@mariaanmo HAHA yes I did think about my phrasing but y’all get it so doesn’t matter XDDD

[@user-uw2nr5rk6y]

@Hamza Mzali I reported spam

[@user-rg8et4nq5m]

@Hamza Mzali Yes

[@nigerundayo]

this is so funny!! you see i have perfect pitch as well and i thought it is just G in quaver pulsing, i thought the question will be about if the rhythm is even or dotted. and Eddy's reaction is my exact reaction

[@jamesheinz6325]

loved the shepard tones and those kinda things. the headphones needed for the low high pitch thing was weird. i listened without headphones and could hear the octave like sounds alternating but when i put them on, i only heard one pitch sound also. was really weird

[@lukeschroeder4688]

Brett and Eddy: Australians Me: YANKEE DOODLE, YANKEE DOODLE!!!

[@kristinam4178]

Me too I couldn't help telling them out loud 😂

[@tanzidamim5481]

Right?! I was yelling yankee doodle at my laptop

[@jupitia51]

Me: The Barney song

[@kristinam4178]

It actually is the Barney Song

[@aviaesthetic4252]

YANKEE DOODLE WENT TO TOWN RIDING ON A PONEEEEEE

[@savvysounds6063]

No one: Eddy: I’m just built different 🤪

[@sarabensouda7422]

kzbin.info/www/bejne/m3THl6Z7hceDetE..

[@frefly6774]

6:17 “Barney was a dinosaur with pure imagination” and so on am I the only one who noticed that

[@soulofartorias9928]

i definitely heard down on the tritone paradox and it made me smile since they both heard up :')

[@franzdevedeux5411]

"If I'm in a simulation, can't my simulation at least play in tune." that hurts

[@cypherbrittainnethegodofsl4988]

Drummers : *Blas beats so fast that it create afterimages*

[@yeaolon]

Beats so fast that the beats create a pitch of their own

[@ckchang-wg2lw]

@Hamza Mzali SHUT UP.

[@xandraxandra1437]

@@ckchang-wg2lw Report him. It's the only way to get rid of boots. KZbin must be aware of them.

[@user-uw2nr5rk6y]

@@xandraxandra1437 +

[@_arina_161]

on the talking piano when they were playing it without the words (the part where it says saving and protecting) i could hear saving and protecting its weird

[@maryvallettakeith6146]

Nice use of fractals and the Mandelbrot set.

[@katquintero376]

11:55 twoset: this isn’t a paradox me: but-but...it went down?!?!

[@anticloxkwised]

that's what i was thinking it went down for me and i was like "is there something wrong with me?"

[@iatesoap9441]

@Emilia Ryba Yes but for me it did the opposite - first went up and second went down

[@claytonr.young-music912]

They have spent so much time together; they speak similarly. Someone else could be different.

[@ketsiabk777]

I mean, how could we hear it differently ? It’s basically two different notes, up or down is subjective, no ?

[@mads10039]

Samme I was doubting my existence for like five seconds

[@darrenphoon5333]

Ordinary people: Freaking out over Shepard tone Mathematical me: Huh, never knew the Mandelbrot set was related to music

[@leroysanchino]

Nerd

[@xiangli9588]

Nerd

[@Tiriondil]

roflol! thanks, that really cheered up my day

[@mahatmaniggandhi2898]

where my math gang @?

[@ryanthes9133]

Nerd is cool

[@Jaszi007]

For the tritone thing if you focus on the higher note the first time you (or at least I could) can make it sound kinda like it high then low.

[@charchar2627]

11:50 if I had to choose whether I thought it was ascending or descending, I’d have to say descending. However, when I heard the first tritone is heard both of the second notes at once. I’m pretty sure there’s two octaves being played at one time and so when it goes up a tri tone you can either hear the upper note of the upper octave, or of the upper note of the lower octave. At least that’s how I’d describe it.

[@sharpfang]

The last one was in fact discovered accidentally - through an AI tasked with transcribing songs into MIDI, and given a vocal recording. The one in the video was rather poorly executed, but there are ones you can understand without subtitles. It's actually not all that "magical", it just sequences voice (vocal) into a myriad extremely short notes that when combined form the same waveform as the original. All digital audio works just the same, except you get like, 44,100 "notes" per second in typical MP3 audio. The less - the lower "sample rate" - the harder to understand the voice, and getting it low enough that a mechanical piano can play it back makes it nearly incomprehensible.

[@ItsABOUTflamTIME]

digital audio is 44100 samples per second, very different from notes. If you could somehow play 44100 notes per second on a piano (actually, you can on a digital piano), you still wouldn't ever start to sound like a real person talking.

[@DerekHise]

@@ItsABOUTflamTIME You sure? The math is pretty robust. The principle is about adding frequencies to achieve other waveform patterns. Fourier series transforms allow you to model any wave shape to achieve any result, by adding and subtracting other waves constructively or destructively. kzbin.info/www/bejne/mqSTlKB3i5KMm80

[@ItsABOUTflamTIME]

@@DerekHise Well, pianos don't play sine waves or PCM samples.

[@DerekHise]

@@ItsABOUTflamTIME Granted, but I'm not sure that means they can't still be used to approach arbitrary wave patterns. As a sanity check, It's my understanding that many synthesized pianos already construct their piano sounds _from_ sine waves, so unless I'm missing something, it stands to reason that those piano notes could be deconstructed those back into sine waves through destructive interference.

[@ItsABOUTflamTIME]

@@DerekHise Every sound is constructed of sound waves. Getting back to sine waves means that you need some combination of samples such that every part cancels except for a sine wave. I don't think that's guaranteed to exist (and it's definitely impossible on a real piano, since we don't have that kind of granular control over the sound of a particular note.)

[@KuroKisakiCovers]

Imagine your piano talking to you when you didn't practice 40 hours a day.

[@haydenmercado2909]

come here and ram ur fingers into my buttons, viroucously press on my pedals, and when ur done u can close me and get a final slam

[@Krince]

The paradox omfg, at first I heard it ascending then you asked someone now it sounds descending, but the notes are ascending according to my piano ahaha

[@vulpusgenius]

for the "octaves" one, I hear the lower note always on doing a semitone jaws thing, then the high note is going on or off, they are in both ears equally

[@yeaolon]

I could be practicing 24 hours but really it’s an illusion I’m bending the fabric of time and practicing 40

[@yeaolon]

@Hamza Mzali will you shut up

[@violinfanatickamraz1403]

@Hamza Mzali quit spamming with this and your other accounts!

[@newyearsday7304]

I'm on a boat travelling west from the international date line, aroudn the world to the other side of the international date line. There we go. 40 hours.

[@user-uw2nr5rk6y]

@Hamza Mzali I reported spam

[@AGKyran]

Me, seeing the dog in the first second. "Surely, we're build different." I was inable to reckonize the melodies earlier with notes put in the wrong order.

[@lyubovandpeace2731]

Haha I also saw the dog immediately🐶

[@smhmyhead8017]

"inable" "reckonize"

[@smhmyhead8017]

You're "inable" to speak English too by the looks of it.

[@faithdecoteau1643]

@@smhmyhead8017 be nice

[@faithdecoteau1643]

The trick is to pay attention to the rhythm

[@charliecarrot]

I heard the tritone paradox one as going down, like a "uh-oh" buzzer sound when a gameshow contestant gets a question wrong.

[@That1Knife]

What the heck for that paradox illusion I heard down first and then up, like what??? And it was very clear.

[@karthikmitta4134]

OMG I got bubble tea yesterday for the first time, and when I asked them for 'half sugar less ice' I pushed my glasses up and felt like a frickin anime character lol

[@kyliewada7415]

Them: "1,2,3,4....1,2,3,4" over and over Me: Eddy and Brett's have started a Twoset cult chant

[@Goggalor1990]

Yes! I use Shepard tones extensively in some of my game compositions. Fun stuff!

[@KitsuyuutsuR]

You want really freaky, there’s a video on KZbin, 10 hours of falling Shepard’s tone and fractals. I love that sound… it gives you the feeling that you’re falling down. Really trippy stuff.

[@musickeeper8744]

The first time they played the tritone sound, I heard it go up. The second time they played the tritone sound I heard it go down. TRIPPY

[@burnbash11]

Me too, every time

[@47skyeaab6cb]

same∼

[@mr.nerd3.142]

I could hear both at the same time. I could also pick out either one depending on which one I focused on.

[@zanderdevinci8198]

Opposite for me!

[@pebbsgamingwithsisters3428]

Same!

[@BJCMXY]

For the piano... It was actually something I could hear regardless of the subtitles...but I also have an inordinately large amount of practice in deciphering what people are saying despite the interference... So...that may be why I could actually hear words...after all...I can do vocal recognition on identical siblings... And that requires an extremely fine level of capacity to detect patterns.

[@ruslbicycle6006]

Why do you do do vocal recognition on identical siblings? What does that mean? Sounds interesting.

[@susfungus]

@@ruslbicycle6006 i think they have siblings that sound very close to same and they have to identify them from each other

[@karlboud88]

I was able to guess a couple words, despite the sentences being really weird. possible not impossible

[@john_titor1]

It sounded extremely clear (as in, i could identify nearly every word without reading) to me. Im not anything special either, no music or speech background.

[@pentachronic]

If yuo listen to Scottish people talk in a pub when they're drunk, the piano thing is easy!!

[@fetamean]

The octaves illusion is brilliant. I'm left handed and when I really focused, I couldn't figure out where the fuck the tones were going. It felt like the high pitch one would switch randomly to the left or right side. That one is crazy good.

[@AndyTheInconsistent]

With certain sound illusions you can actually in a way deter them. For the rhythm one, focus really hard on the first rhythm you hear, and it will not feel as if it is getting faster.

[@cyrissiryc5126]

Tritone paradox works. I first heard the tone going down, but when TwoSet said the tone went up, I listened to it again. You can hear two tones actually if you listen to it carefully, one going up and going down, which is why some people hear differently 😊 Great vid though! Very iNteReStIng!!!

[@sarabensouda7422]

kzbin.info/www/bejne/m3THl6Z7hceDetE..

[@allinory]

I definitely cannot understand how it can be heard as down...

[@chrischen465]

Twoset: It’s going up Me,hearing down: UHHHHH… I’m pretty sure there IS a paradox….

[@sarabensouda7422]

kzbin.info/www/bejne/m3THl6Z7hceDetE👈🎹

[@anticloxkwised]

i heard down as well-

[@user-uw2nr5rk6y]

@@sarabensouda7422 I reported spam

[@Kxngcreates]

Literally try just watch y’all videos to chill and the first thing i hear is “practice”😭😭😂

[@grekygrek]

Eddy you and that damned perfect pitch lol. Brett totes felt bad when he couldnt figure out ode to joy lolol. Btw i relate with Brett cuz he seems to have a similar attitude as i do....and his glasses are very similar to mine not in style but in prescription. I feel your pain Brett.

[@chiangweytan5937]

Having perfect pitch is kinda cheating for the scrambled illusion. He could just intellectually notarize the notes in his head and unscramble it. Not like the rest of us who have to rely on instinct

[@sj4iy]

Yeah, I had no trouble with hearing anything else, but I didn't get the mystery melody at all. I know Ode to Joy well and I don't hear it. Funnily enough, I saw the picture right away with no issue.

[@AzKaii]

Not gonna lie, Editor-san completely nailed this again.

[@mingmerci6103]

Today we are watching sound illusions, minds already blown by that statement lmfao that first one legit gave me anxiety and palpatations

[@coolskelleton95]

That auditory illusion was freaky. The first time I heard it, I heard the different octaves switching, but the second, it was just a constant note. It was freaky.

[@justary_9790]

The matching outfits is always so wholesome 🥺

[@sarabensouda7422]

kzbin.info/www/bejne/m3THl6Z7hceDetE👈🎹

[@ladym.7594]

It's the best thing really

[@DumblyDorr]

For the "talking piano" - seeing the words certainly helps - but the sounds are pretty much actually there. It's just a Fourier transformation of the speech recording (i.e. finding the amplitudes of different frequencies in the overall sample over time) mapped onto the (relatively coarsely gained) notes on a piano. Amazing stuff.

[@alexandraivanova1461]

i remember making a thing similar to the talking piano via computer program once it actually is just a recording of a person speaking turned into a midi file and played the piano will play ALL the notes so some of them will remind of human speech, but not quite, and so the words (or lyrics, if you do it with a song) are to hear only if you can read them or you know them already

[@colinbrash]

That tritone thing was nuts. I heard up for the first one, then down for the second one. Then I went back and it sound UP for the second one. Then relistening, it was down again! And the first one was always up for me! Wtf…

[@netanyasullivan1889]

The last one is the ability of your brain to fill in the missing pieces with whatever is fed to it through your different senses. That's why without the subtitles it makes no sense but once you read the subtitles, you can hear the "piano talking". To me it just shows the crazy things the brain can do just to make things make sense.

[@nazianafis]

Yes! Another crazy thing your brain did was it made you praise brains! Brains really be some next-level sentient organs. 🧠🕶

[@adhithirajesh9685]

It went up for me lol

[@VelkanAngels]

@@nazianafis - Brains are so full of themselves xD. The human brain is the most complex thing we know of... according to the human brain, lol.

[@breannab6708]

@Netanya Sullivan Exactly right, it shows the power of the human mind to fill in missing information. I was surprised by Brett's and Eddie's dismissive reaction once they couldn't hear the words without looking at the subtitles. Of course a piano can't perfectly imitate a human voice, you can't make one sound exactly like the other without losing the characteristics of one of the instruments involved (in this case, the voice), so considering that, what we see is still pretty amazing.. Just like with any instrument, when a human speaks or sings, there are overtones and undertones that not only contribute to the pitch you hear, but also to many other qualities of the sound (tone and timbre, for example). For anyone who wants to know how this "illusion" may have been pulled off, the creators involved probably took a high-quality audio clip of a speech, used a Fast Fourier transformation to analyze the frequencies (over/undertones) involved in each syllable, converted each syllable frequency component into its corresponding musical note, and then gave the info to a machine that can play any combination of notes on the piano. If you know what all of those over/undertones are and how loud they are compared to each other, and you have a device that can reproduce those exact frequencies at their exact relative volume, you can imitate any sound in the world. Flute Gang represent (～￣▽￣)～

[@RadenWA]

@@nazianafis what about people whose brain made them hurt...their own brain?

[@iliketea9678]

New character unlocked: Vanya Edit: Spelling error

[@ladym.7594]

Curiosity level: 📈📈📈

[@xandraxandra1437]

I'm so curious, she has been in another video too.

[@iliketea9678]

@@xandraxandra1437 Really? I think it's a guy.

[@mariane6199]

@@xandraxandra1437 they say he

[@cerebrummaximus3762]

@@iliketea9678 Me too, I heard a Male voice, but Vanya is a female name

[@lunarwolfcassia9435]

That octave illusion messed with my head. I am right handed, but I heard the high notes in my left ear. but then sometimes, I just heard both the notes in a single ear.

[@nayunis9289]

the one with the up/down tone is easy to decipher when you listen with headphones, and then do one ear at the time: In both ears it plays octaves, but in such a way that you always hear both notes at once. Specifically it switches between high note right low note left to high note left low note high. there fore you hear a beeping of the same note if you focus on the pitch (because you hear the same note switching between left and right) or you hear high/low up and down if you focus on one ear and try to ignore the other.