[HN Gopher] Auditory illusions with examples from Daft Punk
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       Auditory illusions with examples from Daft Punk
        
       Author : ugurnot
       Score  : 133 points
       Date   : 2023-08-12 20:10 UTC (2 hours ago)
        
 (HTM) web link (www.ugu.rs)
 (TXT) w3m dump (www.ugu.rs)
        
       | distantsounds wrote:
       | This article is horribly written and executed for many reasons,
       | but the primary one being that the vast majority of the music
       | credited as Daft Punk is just sampled music from other artists.
       | You can eloquently see this broken down here:
       | https://youtu.be/lBSWw7RdZLk
       | 
       | At least get the original works correct.
        
       | jonbell wrote:
       | TIL the term "brown study"
        
       | monkpit wrote:
       | First off, I love Daft Punk and I've heard all of these song
       | countless times.
       | 
       | But, sorry, I don't buy it. I am aware of the talking piano
       | effect, but even the wiki page [0] says it's a vocoder, which is
       | something entirely different.
       | 
       | Similar to other commenters here [1], I don't hear the pattern
       | described for the octave effect either.
       | 
       | [0]
       | https://en.m.wikipedia.org/wiki/Robot_Rock_(song)https://en....
       | 
       | [1] https://news.ycombinator.com/item?id=37104083
        
         | MAGZine wrote:
         | Switched on Pop dived into Daft Punk[1] and definitely
         | identified Daft Punk's robot voices as vocoder. Actually, most
         | robot voices are.
         | 
         | [1] https://open.spotify.com/episode/52t5WCspFuFkow374P88wA
         | (but also Ep 1 and 3).
        
         | ugurnot wrote:
         | It is not the vocoder but the guitar riff that sounds like
         | robot rock.
        
       | a-dub wrote:
       | my favorite are shepard tones, which literally look like the
       | barber pole illusion in a spectrogram.
        
       | beautifulfreak wrote:
       | The Brainstorm/Green-Needle auditory illusion is more noticeable:
       | https://www.youtube.com/watch?v=g88BXUhR2a4
        
         | saghm wrote:
         | When my fiancee showed me this, it took me almost a dozen
         | watches to finally hear the one I didn't initially hear. I
         | don't remember for sure which one I could hear at first, but I
         | think I only heard "green needle", which was higher pitched,
         | and it took me a lot of concentration to block that out and
         | focus on the lower pitch enough to be able to parse out some
         | semblance of speech. If my recollection is correct, my troubles
         | with the lower pitched sound is a little ironic because I play
         | bass and often try to point out bass parts I like to my
         | fiancee, but she sometimes has trouble parsing out exactly what
         | I'm referring to due to not having had any musical training and
         | it not being as obvious to her which part is the bass when I'm
         | showing her a song with lots of different guitar and keyboard
         | tracks and lots of heavy bass drum.
        
       | AlbertCory wrote:
       | Funny about them: I can hear the words _either_ as  "Mexican
       | lucky" or "to get lucky" (the correct lyrics) depending on what I
       | want to hear. Usually, once you know the right words, you can't
       | hear anything else.
       | 
       | https://boards.straightdope.com/t/who-is-mexican-lucky-and-w...
        
         | mhh__ wrote:
         | "Legend of the penis"
         | 
         | "Rob a Mexican" etc
        
         | bloopernova wrote:
         | I've always liked the incorrect lyrics "we're robot Mexican
         | monkeys". Not sure who first came up with that. I remember
         | reading it on reddit back when the short preview clip of _Get
         | Lucky_ was released to great excitement.
        
           | Hamuko wrote:
           | The version I saw early was "We'll rub a Mexican monkey".
        
         | p00dles wrote:
         | https://m.youtube.com/watch?v=qN1fVkeSUXE
         | 
         | I wonder how many people knew the correct lyrics before this
         | commercial, I certainly did not
        
         | hydrok9 wrote:
         | "we're up all night to pet puppies"
        
       | stigz wrote:
       | In a similar vein, here's an analysis of the illusion in
       | Radiohead's Videotape I found interesting.
       | 
       | https://youtu.be/p_IHotHxIl8
        
       | Waterluvian wrote:
       | I'll have to figure out which Daft Punk song I'm thinking of, but
       | there was this segment where I swear there's this really swingy
       | chord progression but when slowed down to study it turns out to
       | be the same chord repeated over and over. It's the other voices
       | that are progressing.
        
         | mergejoin wrote:
         | commenting, in case you figure it out
        
         | MAGZine wrote:
         | it sounds like you're referring to Daft Punk's "Giorgio by
         | Moroder" from their album "Random Access Memories." The segment
         | you're describing involves a repetitive chord progression, but
         | the perceived variation comes from the evolving layers and
         | elements surrounding the chords. This technique creates a sense
         | of progression while maintaining a consistent base.
         | 
         | -- by chatgpt
        
       | adamrezich wrote:
       | for the Robot Rock one, the author should've clarified that it's
       | not referring to the actual `rock. robot rock` voice part, but
       | the part where the guitar chords _sound like that_. skip to about
       | 1:50 in the linked video to hear the robot voice, then listen to
       | how similar just the guitar chords after 2:00 _sound like_ the
       | robot voice saying `rock. robot rock.`
        
         | ugurnot wrote:
         | You are right. That part seems a little bit vague, I will
         | update it.
        
         | brookritz wrote:
         | ...and the author should have clarified that this Daft Punk
         | song is copied from a 1980's single:
         | https://www.youtube.com/watch?v=5b0jWlPtP5o
        
           | spondylosaurus wrote:
           | Isn't Daft Punk pretty famous for sampling/referencing other
           | artists' songs?
        
             | rtuin wrote:
             | Yes: https://www.whosampled.com/Daft-Punk/samples/
        
             | rifty wrote:
             | Sure, but it's worth mentioning that this isn't just a Daft
             | Punk thing. Electronic music and especially House music
             | going back to its roots was shaped by sampling great
             | moments or vocals of tracks into loops and mixing them
             | together into new tracks on top of a 4/4 kick.
             | 
             | The funky/disco/french house era was particularly prolific
             | with sampling though.
        
           | veave wrote:
           | HN discovers sampling in electronic music.
        
         | glandium wrote:
         | Also, in that particular example, I don't think they made the
         | guitar emit the voice-sounding sounds, but rather generated it
         | electronically. It's not even obvious that the voice comes from
         | guitar sounds... it actually sounds like a plain voice with
         | effects.
         | 
         | As opposed to, say, Mark Rober's talking piano.
        
       | ilyt wrote:
       | This is a better demonstration of octave illusion, I had no clue
       | wtf the article meant until I listened to this:
       | 
       | https://www.youtube.com/watch?v=IMMsK9rjBWo
       | 
       | But I heard the lower tone in the middle of my head and higher
       | tone bouncing from left to right. Not the "low on one side, high
       | on the other side" article mentioned.
       | 
       | Kinda interesting to think some people might hear completely
       | different thing in same song...
        
       | wantguns wrote:
       | i have always felt some unexplained effect while listening to
       | Veridis Quo [1]. the melody start sounding different from the
       | 0:38 mark, just as the kicks come in. it seems like some
       | supporting keys are added with the kicks, to make the sound more
       | full, but at the same time it could be my brain getting tricked.
       | 
       | sorry for botching the explanation, i have never studied music.
       | 
       | [1]: https://www.youtube.com/watch?v=TCd6PfxOy0Y
        
       | samstave wrote:
       | I have a weird auditory illusion that happens to me ; I have
       | tinnitus, and a super weird auditory response thing that happens
       | to me occassionally:
       | 
       | So when I cant hear the high-pitched tinnitus squeal (very low
       | volume, but still hear it) - there is something weird that
       | happens which is that I can "hear" some sort of radio station -
       | which plays music in the really faintest and far away sounding
       | volume...
       | 
       | The other thing that happens, is that when laying in bed,
       | attempting to sleep - there are times that when the house makes a
       | "creak" sound of settling or whatever (you know how your wall may
       | 'pop' or 'creak' at times - but the weird thing is that it
       | simultaneously coincides with a pop and a flinch of my body, or
       | 'sound' in my head.
       | 
       | There are times when this happens and I get a bright flash in my
       | closed-eyes...
       | 
       | Anyone know what this is? Sodium defficiency? or aliens?
        
         | SpaceNugget wrote:
         | I don't hear radio stations, you might want to get your antenna
         | checked. But I get the same sounds when I am laying in bed
         | before I fall asleep and they also coincide with twitches or
         | flinches and sometimes visual flashes.
        
         | jrmg wrote:
         | The flash thing sounds like
         | https://en.wikipedia.org/wiki/Synesthesia
        
         | Groxx wrote:
         | Radio receivers in your head!
         | https://skeptics.stackexchange.com/questions/3638/is-it-poss...
         | 
         | Also perhaps most famously: https://www.snopes.com/fact-
         | check/lucille-ball-fillings-spie...
        
       | anArbitraryOne wrote:
       | Would someone please send him a tweet telling him that you can
       | start videos specific timestamps on YouTube by adding "&t=0s"
       | where 0 is the desired number of seconds to the URL? I'm not
       | making a new Twitter acct just to contact a person who has
       | "Contact Follow me at Twitter: @ugu_rs" as the only means of such
       | on their blog
        
       | aatd86 wrote:
       | One that mix engineers use a lot and that is not mentioned is the
       | Haas Effect. (micro delay between left and right channel that
       | gives a stereo sensation to a mono source)
        
       | jcims wrote:
       | I wonder how many folks that spend thousands of hours in front of
       | a synthesizer or making electronic music or beats have identified
       | similar illusions but don't really think of it as something
       | 'interesting'. Like, 'oh yeah if you do this it kind of sounds
       | like that'. Probably a whole catalog of tricks.
        
         | whiddershins wrote:
         | Yes
        
         | jnurmine wrote:
         | When I was 14 years old, I noticed how pure saw waves make fast
         | transient sounds go "whooshy".
         | 
         | 1. Play a pure saw wave sound for several seconds, it has to be
         | loud (use headphones), then
         | 
         | 2. hit the keyboard keys, or snap your fingers, or make other
         | sounds with fast transients, and the transient is no longer
         | snappy, it "whooshes". It's hard to describe but there is like
         | a flanging effect on it.
         | 
         | I guess there is some scientific name for this phenomenon, but
         | I don't know what.
        
         | v64 wrote:
         | Happens all the time. Most common one for me is when you're
         | making a patch on a synth and by chance dial in those
         | frequencies that align with formants (similar to the Robot Rock
         | effect the post mentions).
         | 
         | Yesterday I was working on a bass drum beat, and after adding
         | some synths playing on top of it, I started to hear the bass
         | drum echo. So, my first thought was I had accidentally enabled
         | some kind of reverb or echo effect on it while I was setting up
         | the synths. After confirming I hadn't and isolated the track to
         | ensure the bass drum was sounding as intended, I chalked it up
         | to some weird illusion between the synths and drum that was
         | making it sound like an echo. I know it's not there in reality,
         | but I can't unhear it.
         | 
         | In this case, I went back and added a little echo to the drum
         | to make the effect intentional, which turned out to sound good,
         | but sometimes I'll try to make the illusion reality and it
         | doesn't have the same effect.
        
           | mergejoin wrote:
           | would you mind sending a mp3 of that effect? just curious :)
        
           | metamet wrote:
           | I always wonder if it's some odd thing going on in the DAW.
           | 
           | Would you be willing to export that track as two tracks--one
           | with drums and one with synth? Then listen to them solo, then
           | run them together (with WAV files instead of
           | instrumentation)? Would be neat to have that illusion
           | confirmed rather than it being a DAW artifact.
        
       | Groxx wrote:
       | > _Open the song Aerodynamic and fast-forward to 2:28, start
       | listening to the passage. I hear the higher pitch on my right and
       | the lower one on my left ear. What about you?_
       | 
       | tbh I'm not sure which notes they're referring to here. There are
       | a couple overlapping high/low pairs in that segment, and I'm not
       | sure which is the octave/those frequencies.
       | 
       | One seems like higher is more in my left, but it clearly follows
       | the left speaker on my headphones. The others warble around for
       | me, though I'm pretty strongly right handed.
       | 
       | ---
       | 
       | Even after reading and listening to
       | https://en.wikipedia.org/wiki/Octave_illusion I'm totally lost as
       | to what this post or wikipedia are describing. Are people hearing
       | like:                   left ear        right ear
       | -------------------------         high
       | (nothing in right ear)                         low         high
       | low
       | 
       | or something else? I mostly hear:                   left ear
       | central       right ear
       | --------------------------------------         high           low
       | low         low            low           high         high
       | low           low         low            low           high
       | 
       | I'm definitely hearing "low" while hearing "high" on the opposite
       | ear, though it feels like there's a basically constant central
       | "low" as well. The high tone clearly moves between sides.
       | 
       | Maybe worth mentioning: I've had a hearing test in the past year
       | and I'm essentially completely balanced, so there likely isn't a
       | tone-deafness issue on one side that could cause a reception
       | imbalance. Could the illusion just be hearing damage? And then
       | handedness just follows which ear takes more damage due to more
       | noisy things happening / less protection on that side? That could
       | also explain why left-handed people are less strongly sided, as
       | they're forced to do things more balanced due to right-hand-only
       | stuff existing.
        
         | gabereiser wrote:
         | people are hearing what you hear. It's the simultaneous tones,
         | one low, one high, low in the left, high in the right. It's not
         | that it's panning (one at a time), it's together (or within ms
         | of each other when mixed with other techniques). Once you
         | understand this, then the concept of just flipping it makes
         | even more sense. Then get creative and flippity floppity the
         | high/low left/right dance.
        
           | Groxx wrote:
           | That's what the sounds are actually doing though, so what
           | would the illusion be?
        
             | gabereiser wrote:
             | the illusion is it's perceived as the "same" note/tone.
             | It's not, and when you dig, you can tell it's not, but when
             | you're casually listening, your brain here's a "fuller"
             | note for some reason. The "fuller" comes from the two
             | octaves being played simultaneously in your seperate ear
             | holes.
             | 
             | Like sleight-of-hand, you know it's there but you can't
             | quite discern it at the time and are gladly surprised by it
             | but you know it's not real magic.
        
               | Groxx wrote:
               | This sounds like it might be conflating stuff like
               | vibrato (fast variation in pitch) or even faster. The
               | illusion in the song and on the Wikipedia page involves
               | changing the tone only _four times per second_ , there's
               | no claims at all about both tones blending together.
        
           | ilyt wrote:
           | I don't hear that. I hear constant low tone in both ears with
           | only high one bouncing around (i.e the ear where high is is
           | perceiving low one even if it is not there)
        
             | Groxx wrote:
             | * * *
        
         | gizajob wrote:
         | It's the Shepard tone effect running in the background of the
         | actual notes, which produce a mild illusion that they're
         | ascending when they're not, but nevertheless they're moving up
         | and then down in pitches so it's not a brilliant example. I
         | think the author is a little confused in this short essay about
         | a few things. His "talking piano" effect is just standard
         | vocoding, which has made me think this is all fairly new to him
         | and he's not an expert.
         | 
         |  _THIS_ is a talking piano: https://youtu.be/muCPjK4nGY4
        
           | ugurnot wrote:
           | The tone I'm referring to is the alternation between F#3 and
           | F#4. I think your observation about the Shepard tone is
           | valid. For the talking piano effect, I remember trying to
           | play it on guitar to make it sound like "Robot Rock". I
           | suspect this is in relation to Tethard's example of
           | accentuation by spectral contrast, but that was a long shot
           | to include.
           | 
           | Well, the audio area is full of masters and experts. I make
           | no claim to be an expert, so you can ignore this writing as
           | you prefer.
        
             | suction wrote:
             | [dead]
        
           | suction wrote:
           | [dead]
        
         | ilyt wrote:
         | Same for me, just hearing the high tone bouncing around
         | 
         | Here is better video for that illusion:
         | https://www.youtube.com/watch?v=IMMsK9rjBWo
         | 
         | I've heard of an effect where brain synthesises lower tone from
         | the higher harmonics, might that be reason why I hear the low
         | tone in both ears at once?
        
       | sublinear wrote:
       | https://youtu.be/1oD2DWf4CjQ
       | 
       | Com Truise - Fairlight
       | 
       | I wouldn't call this an illusion as much as an interesting
       | effect. Put on a good pair of headphones and listen to the intro
       | at moderately high volume. There's a buzzing note in there that
       | seems to resonate in a way that feels like it's coming from
       | inside your head or maybe even your throat.
        
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