"rotating audio 90 degrees" is the most insane thing ive seen a producer do

@trgrgtgrtgr7724

2 ай бұрын

What about using photoshop to vocode something ?

@idiotinium

2 ай бұрын

@@trgrgtgrtgr7724 photoshop vocoder sounds so silly lmao

@haydengullins6505

2 ай бұрын

@@idiotinium”bro def used photoshop on this beat I can hear it”

@trgrgtgrtgr7724

2 ай бұрын

@@idiotinium lmao It's actually a thing tho

@SomeRandomGerman

2 ай бұрын

photoshop@@trgrgtgrtgr7724 ? i just use "Photosounder Demo"

I will die on this hill: FL users are either the newbiest producers, clipping their masters at +5dB, or they are borderline NASA scientists. There is no in between😂

@idiotinium

2 ай бұрын

lmao this is true

@XXXPUBLICENEMY

2 ай бұрын

wonder where i am With my 10db master but okay music

@GrvMUSIC4U

2 ай бұрын

Fax

@gnosis33-real

2 ай бұрын

Truest 😅

@currentcontentco

2 ай бұрын

love it

Other producers been flipping samples for decades now but you are not like those other producers... you got your samples doing fucking cartwheels!

@bananabus.

2 ай бұрын

literally flipping samples rn

most insane part of this is seeing it done in FL studio and not matlab or something

@disivni

2 ай бұрын

Nice matlab shoutout. Never see these 2 worlds combine... well, not out in the wild

@vikenemesh

2 ай бұрын

@@disivni any csv file with one column can be a wav file. any wav file can be a csv with one column. there IS common ground, someone just needs to put it to use.

this is the craziest bit of sounddesign i have seen in ages

you have no goddamn idea how ecstatic i am to learn that something i randomly conceptualized a long time ago is now actually possible ive found myself making more IDM, glitch, noise, and botanica music and this is such an insane gamechanger for me

@idiotinium

2 ай бұрын

yoooo sick

This is a geometric explanation of why taking the Fourier transform twice gives you the time domain back, only reversed. It's great to see another way of looking at it.

@vinceb8123

2 ай бұрын

I do not produce music (yet) and this comment sounds like the most made up insider BS talk imaginable 😂

@vinceb8123

2 ай бұрын

Like what are you gonna do to the time domain, space wizard?

@Firepal3D

2 ай бұрын

@@vinceb8123 This is only really relevant if you like messing with frequencies. Fourier's transform is the best way to map time-domain bins into sine-space for further analysis

@unrealenginerr5372

2 ай бұрын

@@vinceb8123 if you just don't know how stuff works then just shut up and sit quiet

@vinceb8123

2 ай бұрын

@@unrealenginerr5372 Yeah, your comment had way more value to the discourse! 🤡

Even engineering classes won't teach you this, hats off

@idiotinium

2 ай бұрын

formal education is silly

@skrunglywungkus

2 ай бұрын

the classical formality really is silly; i’m actually hoping to develop a syllabus to teach introductory applied signal processing with music/audio. A lot of people seem to benefit much more from seeing something applied and trying it out before learning all the math behind it.

@idiotinium

2 ай бұрын

@@skrunglywungkus hell yeah thats awesome

sincerely congrats for figuring this stuff out, simply brilliant, maybe it seems to you that its goofy and gimmicky, or not very useful right now, but youre tapping in unexplored territory here and this could be the beginning of something bigger! ❤

@vxbrxnt

2 ай бұрын

This technique would work great for melodic riddim/color bass

@Ne1gh_

2 ай бұрын

agreed

wow, the 270 degree one was cool. loved how it faded in all of those sounds

This takes "sample flipping" to the next level

@idiotinium

2 ай бұрын

hell yeah im out here rotating samples

you can create some crazy distortion if you rotate it once, add some kind of delay, and then rotate it back. Could probably do some crazy sound design with this

@iamsushi1056

2 ай бұрын

Harmonics, yeah, that’s a great idea to explore

@NZsaltz

2 ай бұрын

That's actually genius! What other effects could be useful swapping out the frequency domain for the time domain? Reverb to make stuff into weird white noise, I guess? Would EQ be like a particular volume automation curve over time? I'm not even sure what a flanger or phaser would I'm not even sure what a flanger or phaser would sound like, messing with all the frequencies in a sweep? Really cool idea to use the rotation like that!

@Kaixo

2 ай бұрын

@@NZsaltz perhaps this can be used to create distortion/saturation without aliasing? You'd just need a way to apply conventional 'distortion' in the time domain somehow... Wouldn't really be useful in a realtime setting, but probably useful in some way.

@idiotinium

2 ай бұрын

delay would be like layering a sound on itself with a frequency shifted version of itself multiple times in a stack

@iamsushi1056

2 ай бұрын

@@NZsaltz a flanger is actually caused using delay. Rotating it would sound pretty similar. A phaser, on the other hand, would depend on how many bands it had, but would be a weird comb-filtered delay I believe.

Please make more videos like this

@idiotinium

2 ай бұрын

lmao sure if i discover anything equally or greaterly funky

i want to try to turn this into a program so that it renders without latency and is lossless

@idiotinium

2 ай бұрын

that would be absolutely awesome

@TheEspressoMachine

2 ай бұрын

Yes please!

@ekut1922

2 ай бұрын

put an update here if you do this, because this is so sick but I don't have the software to do even this method myself rn

@davidzaydullin

2 ай бұрын

@@ekut1922 i started doing it. right now im looking into ways of making spectrogram. started with fft at first, but switched to Constant Q bcs its logarithmic (maybe ill make it possible to switch between them in the final version)

@SlyceCaik

2 ай бұрын

i have a MIGHTY NEED

This is so cool, I was so surprised that so little was lost after four rotations?! You could use this to hide a sneaky easter egg or ARG clue in a song :3

@idiotinium

2 ай бұрын

haha yeah it would be perfect for that

I was so bummed when you said it was purely a visual thing i cant believe you got this working

@idiotinium

2 ай бұрын

well it is a visual thing, youre seeing it do the thing in the spectrum lol if its up to everyone to figure out uses for it yesterday i thought of "oh you can hide a vocal watermark in a beat with this without it sounding too ass if you layer it with other stuff and speak very clearly"

@Multi-Waves_Sketchbook

2 ай бұрын

@@idiotinium ohhhhh

Absolutely insane, so cool to see you've figured it out

I actually love the sound that the convolved slided sine wave does. Kinda like an all-pass filter

I've been wondering about the possibility of flipping the frequency response of an audio source upside down for ages now but never had the know-how to do anything like this, thank you so much for satisfying that particular curiosity

using sharex like that is actually the most genius part of this video

this is so timely, I was just thinking how I wanted to do some spectrum range-shifting work (shifting, rotating, squashing, etc) the other day and have never done it before, now I have a few points to jump off at, cheers.

dude i cant get over how unique this is, it's such an otherworldly sound design idea, that's awesome!! imagine if someone made a hybrid of this spectral rotation thing with granular synthesis... like a plugin which would take each grain and rotate them to some angle. maybe with some damping on high freqs to make them more controlled, but i honestly think this idea could spark a whole new plethora of ways to do sound design...

Best video I've seen all week, my dude. Instant sub

Does copyright still apply if I rotate all my samples?

@Zetvue

2 ай бұрын

the courts cannot prove that you rotated a copyrighted song so no

@qar_ty7732

2 ай бұрын

@@Zetvue i would think the main problem would be anyone noticing, but if its noticed you could tell with enough knowledge that its just .. rotated

@idiotinium

2 ай бұрын

rotating something 90 degrees isn't a super lossy process so you aren't altering the original work THAT much, its a reversible process so its basically a novel way to store the signal weirdly

@idiotinium

2 ай бұрын

@@Zetvue yes they can

@Zetvue

2 ай бұрын

@@idiotinium if you rotated it 90deg, 180deg, or 270deg, no they can't i was assuming they were just rotating it 90deg or something and not a full 360deg

most insane thing i saw this week, congrats

subscribed so fast theres not enough people getting this nerdy with it

this is amazing! i wont ever do it but it was great to watch how it's done and know it's posible!

this is the most galaxy brain shit I've ever seen

Interesting! Im tired of videos how to compress drums… now this is new! I like it

This is crazy please do more

You could also generate a spectrogram of your audio signal, do your rotations, inversions, whatever spectrogram manipulations you want, and use the Griffin Lim algorithm to convert the modified spectrogram back to audio. The Python Librosa package has a great implementation of this.

This is what sound engineers should do 24/7, this is crazyy

great work man, makes me think producers and programmers arent too different after all 💪💪

@idiotinium

2 ай бұрын

including mathematicians and whatever else, signal processing nerds, physicists etc!!!!

at 5:25 where you do the phase shift test, the spectogram generates an eye, very cool

@av4751

2 ай бұрын

Seen that as well 😁

Thanks for showing us how to do this. I found out if you bitcrush a spectrogram rotated 90 degrees and rotate it back it creates a repeated granulized sound?? Im super confused why but it sounds cool.

@idiotinium

2 ай бұрын

hmm i guess it would do that, it'd be like if you repeated the original audio and layered that with a repeating version of it in reverse too

@TimTam69420

2 ай бұрын

If you think about it, what any distortion does is just generate harmonics, in other words they generate information that is offset in the Y-Axis of a spectrogram. But if you rotate it, that information is now offset in the X axis - meaning you've generated information that is offset in time. If I'm understanding it correctly, this means a delay plugin alongside this method could be used to generate harmonics in a novel way.

@iamsushi1056

2 ай бұрын

Harmonics become delay.

@music-zv6je

2 ай бұрын

But you would need harmonic interval spaced delay for it to work. Or, hey, a novel road for non-harmonic tones

Oh, I thought this was impossible. I actually remember thinking about it for some practical use, cant remember which one :D Great stuff!

god this is so sick, my math and music brains are both going nuts over this. I really wanna try this now, but idk if i can in reaper

@idiotinium

2 ай бұрын

if you have a convolver and a linear frequency shifter its possiblə

There's a spectralist composer's career waiting to be founded on this technique

This is super interesting. I have a few ideas with this: Harmor can actually process images to generate sound. Also, Melda’s MCabinet is a Convolver that only takes tonal information and not phase/time So it could provide a different result

Absolutely cursed, I love it

Very much like the refractions of light seen in the glass of a window, a phone. Even in a fucking fl studio, you can see the fundamentals of the universe. Man, that's fucking awesome.

@idiotinium

2 ай бұрын

lmao i never thought about it that way, thats very interesting

This is like a brand new sentence but with lore behind it. I imagine cutting away the sweeping spund at the beginning and end contributes to the quality loss

@idiotinium

2 ай бұрын

yea i agree i also think so

super slick stuff!

To anyone that wants an easier way of doing this, I recommend photosounder, with which you can edit audio as if it were a picture, which includes layering, rotating, changing contrast etc.

@idiotinium

2 ай бұрын

do not do this if you're trying to have a good outcome lol, you will have no phase spectrum and quantize your amplitude bins to the bit depth of the image you're saving. additionally think about the pixel interpolation by reading the image and the window function used to generate the spectrum image, also window overlapping etc. that process is supremely lossy

bro takes music out of it's dimensions and modifies it in 1 dimension above :D fkn great!

Trippy. No idea that could work consolver n stuff. Interesting stuff

never seen this done in realtime before, every other thing like this exports the spectrum as an image, opening it in an editor, flipping it, then importing it back in. absolutley wild

this is insane, thanks for sharing!

I never comment, but this some of the coolest shit i have seen in a long time. Somehow YT algorithm works again

you can use frequency shifter from spectral pack. it has higher range than khs iirc

@idiotinium

2 ай бұрын

do you have a link to that?

this is actually insane

oh i gotta try this sometime as another step in making cool pad samples, with some processing in the middle

@morgan0

2 ай бұрын

ok so followup, i couldn’t get it to rotate exactly 90 degrees, always a little off

@morgan0

2 ай бұрын

and the latency was testing my patience real hard lol

@morgan0

2 ай бұрын

but it was fun to play around with

I gotta learn this stuff this is crazy

That is brilliant! I imagine you could do something similar if you manipulate the spectrum with an image editor and a tools Photosounder or Coagula, but it's amazing to do it strictly in the audio domain, so to speak! A lot of potential for interesting sound design, and of course Easter Eggs :)

@idiotinium

2 ай бұрын

keep in mind the phase spectrum is a very critical part of any signal's fourier decomposition, most of those tools only export magnitude/amplitude spectra, also with no window overlap or anything (some even distort it such that it no longer has a linear frequency axis). plus the partials' amplitude will be quantized to the bit-depth of the image further losing information keeping it in audio form retains phases and stuff cus its the pure actual math on the signal

The first rotation might sound cool as a convolution. This is really cool though! Sub'd!

Awesome video thanks for sharing

That's so cool. I wish you'd played what the original audio sounded like though

i love videos like this! :)

The most insane thing I've learned on my own while playing with GNURadio Companion flowgraphs. FFT itself does EXACTLY this. In one shot. If you pass the studied signal through the rectangular-windowed FFT (I mean, a really large one, by the width of the whole audio length ceiled to 2^n instead of the default 1024 samples) and then interpret the result as the ordinary signal, you will get the spectrum rotated 90 degrees. Both the source and the result must be the I/Q signal with two channels (as we are operating with complex float32 values). ...Basically, Fourier transform just rotates the time-frequency domain 90 degrees counter-clockwise. Replaces peaks with sines, and sines with peaks. The idea is THAT simple. ...So, if you apply FFT 4 times in a row, the result will be the original signal as we just rotated the frequency domain 360 degrees.

@idiotinium

Ай бұрын

lmao yeah

This would be interesting to do at a sample rate of say 20khz or 24khz so when it's inverted and backwards after 180deg rotation the majority of the audio is still within the audiable range.

This could make sense as a technique for the soundtrack of a work about time travel.

I can think of exactly 0 use cases for this other than maybe encrypting something like someone said in a comment below, but it sounds sick. How did you even find out how to do this? I have no understanding of why what you did achieved the result. Edit: nvm, I watched your previous video about this, and it makes a lot of sense, this is insane lol.

@tukoijarrett9155

2 ай бұрын

"it sounds sick" is a use case if you think about it

@idiotinium

2 ай бұрын

i saw a recent matt parker (standupmaths) video explaining how a rotation is equivalent to 3 skews if you use specific ratios for the skews, and i also noticed that convolving with a sine sweep was one way to extremely offset phases, and a frequency shifter skews vertically when automated linearly so yeah also it would be a cool way to hide a secret in some puzzle thing for sure!

I think some of the phase shift at the end is possibly a result of imperfect frequency shifting; even if extremely accurate digitally, an ideal frequency shifter isn’t really possible afaik (at least in realtime)

It sounds really cool honestly, some stuff aphex twin would make

Bro, that's hella cool. You need to make a patcher plugin that allows you to rotate audio

these are extreeeemly neat gimmicks i will 100% be using, but what...is this track it sounds sick 👀

@idiotinium

2 ай бұрын

upcoming song, will release it under my actual artist accounts of course. still trying to think of a name for it that suits it tho

So sick 💙

@idiotinium

2 ай бұрын

Get better soon! 💛

This is similar to a thing i've had in mind that is it possible to flip the audio to a mirror image of the dynamics? When there's a peak that would be valley ect. Silence would be white noise or something. Just to have the dynamics upside down

If i have seen some hame community nowadays, I'd say that this will DEFINITELY be used for an ARG sometimes in the future.

did 6 frequency shifters instead of 5 so its equal on the macro. feel like that might clean it up a little

@idiotinium

2 ай бұрын

i think i just gotta find a clean enough linear frequency shifter vst that would let me go up to nyquist lool

you could actually do audio encryption with this. The key culd be the degrees rotated

Ahhh yes the classic right angle trick! (actually never seen this but it's awesome). Another reason that it could be lossy in the low end is that real-time frequency shifters work using allpass filters to (imperfectly) achieve a Hilbert transform, i.e. phase shifting each component by 90 degrees. But DC (0 Hz) cannot be phase shifted, and frequencies near 0 are also more poorly phase shifted by this method.

@idiotinium

2 ай бұрын

theres gotta sooooome way out there that works tho, surely

@obsessive_discipline

2 ай бұрын

@@idiotinium I think maybe if you use a frequency shifter that's not intended for real-time use (one that performs phase shifts in the frequency domain via STFT, which introduces latency), it could work losslessly.

thank you

aight that's pretty cool

awesome swag sauce

@idiotinium

2 ай бұрын

:D

imma do this for my breakcore shi ty for putting this knowledge out

HOLY SHITE THISIS SO CLEVER

this is insane

What does the 180 degrees flipped version sounds like if transposed down to a lower/normal frequency domain?

This is so insane, only complaint is that your tutorial style is absolutely adhd repellent

@idiotinium

2 ай бұрын

lmao, i have adhd

@7177YT

Ай бұрын

Untrue my friend, I have raging adhd and I had 0 problems following our boy hete do his thing.

@idiotinium

Ай бұрын

:3

phase shift might come from an anti-aliasing LPF (near nyquist) used in the rendering process

@idiotinium

2 ай бұрын

yeah and the low end dropping out too after 4 rotations i suspect

@ts4gv

2 ай бұрын

@@idiotinium right

add reverb/delay/chorus etc when 90 degrees then rotate back

this is so cool

Whhaaaaat the friiick I crapped my pants when you played the last one

THIS IS SO COOL

man sometimes I think I've seen producers do it all, but then I come across a producer doing some shit like this

Huh... Now this is interesting, it seems it's possible to reverse an audio sample _entirely in the audio domain_ which is probably useless but seems cool. Two flips gives you the reversed and frequency inverted version of the sample, so you just need to flip it on the frequency axis. I don't really know anything about convolution so I don't know if there's a simple way to use that, but you could amplitude modulate the sample with a fixed carrier frequency which will generate two mirrored sidebands as in an AM radio signal. Then you just low-pass out everything but the lower sideband and frequency shift back down by the magnitude of the carrier frequency, giving you the frequency-flipped version of the 180-degree-rotated convolved sample, which is the original sample played backwards. I have no idea what I'm talking about though.

@idiotinium

2 ай бұрын

lmao yeah i was looking into that recently actually

You're a fucking maniac I love it so much thank you

What if you did this to speech in "realish time" ? In varying number of degrees.

i was trying to figure out this a while ago and then got too lazy, guess someone did it first haha :D

youre insane man, that's fucking awesome

im speechless wft wow

Could the 180 rotation be used in combination with other effects to obtain a "negative harmony" effect?

@idiotinium

2 ай бұрын

maybe, i wouldn't count on it since it's linear instead of how notes are a geometric progression instead of arithmetic notes have an exponential scale while this thing is linear

that lit bro.

Congratulations you just created the sounds inside the event horizon of a Schwarzschild black hole (i.e. time- and space-coordinates being swapped). Though I wonder how accurate this is, because you did it in the frequency domain, but who knows if the singularity of the black hole isn't just a Fourier operator at its heart. 😄⚛🌌🌠🌑

@idiotinium

Ай бұрын

frequency is inverse time, not a spatial dimension soooo im swapping time and inverse time

i'd love to know what it would sound like if you flipped it 180 degrees, reversed it, and played it alongside the original so the frequencies are mirrored but the timing is lined up

@idiotinium

2 ай бұрын

thats equal to a very slight bitcrusher

so this is the fourth dimension of sound

Would be epic to blend back to the original instrument. Would it sound out of tune thou? Piano normal + the bass high, high low setting going forward and synced

rotating audio 270 degrees can produce some cool effects, kinda like the THX logo in a way

pure black magic