Does Music Play BACKWARDS At High Speeds?
Vložit
- čas přidán 15. 06. 2024
- Attempting to tackle life's important questions (and CZcams comments)
💗 Support this channel and join an amazing community: / bennjordan
👀 Stalk me on social media for more frequent updates: linktr.ee/BennJordan
🔴 Subscribe To My Streaming Channel. I stream weekly! • Lambient
⚡Those lovely custom acoustic panels in the background: psyacoustics.com - Věda a technologie
![Moog, Retailers, And Clones [Op-ed]](http://i.ytimg.com/vi/PyA7XnqdufI/mqdefault.jpg)
Can't believe Benn replaced the Earth's atmosphere with corrosive gas for a video.
I know, right? But can we get a vinyl copy of his albums? nooooooo, too dangerous... X-D
Meh... we were going to dobit ourselves eventually.
My children still can’t breathe but it is well worth it!
Well then let’s move 2x the speed of light to watch this video backwards…assuming Einstein was wrong, of course, and there is no upper “speed limit” of causality.
@@markc4176 Superman (1978) is a documentary. So, should work.
Of course music plays backwards after mach 1... it was the SR71 pilots who clued Uri Geller in to all the hidden messages in the Beatles recordings.
Lmao
You shit posting but a wheel spins backwards... matecheck
Paul is dead. We miss Paul
Low-key top comment. 👍George Harrison was the best, most wholesome Beatle. (I said that so the public record reflects my thoughts after societal collapse) 🙃
😂😂😂 Yeah man that's it
You're becoming like the Captain Disillusion of the audio world.
he should paint his ears silver
@@alex0589 😂
I think this is the first time I've ever seen another soul even speak about Captain D's existence
@rodimusmaximus3912 tons of people know Captain D. He's kind of the least well known CZcams royalty... there just isn't a ton of content that begs comparison to his, which is truly a compliment.
never heard of this channel but your comment made me subscribe :D
If I understand correctly, the reason this works is that the sound that was emitted by the speaker later reaches you first on the ground because the point it’s being emitted from a point so much closer to you that it takes less time to reach you than the earlier part when the speaker was further away.
Thank you. You just explained this better than the 9 minute video.
If you're near a gun range and closer to the target than the guns, you can hear the bullets whistling by before the bang of the gun (as most rifles shoot at supersonic speeds). I think the issue (which was also heard in your simulation) is that the hypothetical plane continues to fly and make sounds, therefore interfering with the "backwards" music produced earlier. A bullet ends at the target and thus stops making sound, so the effect is more noticeable, even in the real world. You could improve the effect in the simulated world by having the plane stop playing music once it passes over the observer
The question should be: After hitting the target can you hear the whistling wind from the bullet (which should be in reverse, so I guess it would start loud and fade away). I mean the rifle is not traveling faster than sound, it's the bullet.
Your scenario might be a perfect way to test it because the bullet stopping inside the target would cease all sound coming from it.
Not having spent any time sitting next to a target myself, I couldn't say but it sure sounds like fun :)
This is wild! Thank you so much for all the mathematical atrocities I'm sure you had to endure in making this video, I'll be sure to deploy my newly weaponised audio physics fact straight into the ears of anyone I can!
Bro read this and said:
-I'm gonna do this but I'll add art to it too.
So then he deployed his newly weaponized audio physics art&fact straight into the ears of anyone he could've.
@@Ewr42 you better believe it!
I’m a musician/audio engineer turned ultrasound tech and I am not math-y. Amazing job demonstrating concepts like Doppler shift and thanks for exploring questions like this and sharing with the rest of us.
Now I’m waiting for Benn’s new sample pack where he replace the air with the densest gas and build a tiny sonic boom proof drone attached to a loud speaker and sample an entire pink floyd album, or vst is even better
It's the next audio engineer meta: how would reverb behave on f*kin Venus? Put it on the next hit vocal track!
That's interesting! One caveat of this would be that you hear two versions of the drone after the sonic boom - one version as it's approaching (but backwards, as though it were flying away from you the way it came) and the other flying away from you normally but at half-pitch.
It did show it but it was too quiet to hear
@@melody3741
Agreed.. he did say something about it being a super quiet NASA drone.
If the parameters are changed slightly and a "normal" drone was used, the sound might be more audible.
I was thinking the same, you'd actually hear both the reversed and pitched down version only once the drone has passed and they'd start simultaneously. So it would sound like it's moving forward and backward at the same time as you say
The thing is though, if the source of the sound is traveling faster than the sound, then there will be no more sound once the source has past you. The sonic boom should be the last thing you hear from anything like a plane or a bullet for example (except if the bullet hits the target near to you).
@@musicbro8225 Well, no - the source is still emitting sound, and that sound will travel backwards toward you at the normal speed of sound. It's just that the sound waves will be spaced further apart than if you were standing still. At Mach 2, that's 3x as far as they usually would be.
Your attention to detail keeps me laser focused and continuously entertained. Plus I learn stuff too!
There's a really cool point in there that was literally just a little note on the visualisation: the sound waves invert in the 4th dimension. It isn't that they're just 'flipped' in the traditional sense; it would be closer to say the waves turned inside out, which is only possible because they don't have any tangible mass. In that sense, the sonic boom just is the interference pattern of the sound waves interacting with themselves as they get inverted.
You may have just helped me figure out the double slit experiment.
@@troywhite6039umm. Whats that?
@@lourdespachla6516 So, if you make a card with two slits in it that light can shine through and you shine a laser at it and put a screen behind, you don't see two lines of light on the screen, instead you will see bands, a fat bright one in the middle and fainter and narrower the further out. The effect can be produced with just one slit but having the two interfering lights accentuates it. The wavelength of the light interacts with the width of the slits causing a ripple effect and when the two ripples effects come together in the middle they interfere with each other, adding and subtracting rather like in phase and out of phase or harmonics.
That was back when scientists were trying to prove whether light is a wave or particles; it turns out light can behave like both waves and particles. I wish I could help troywhite but my knowledge is old and sketchy.
@@lourdespachla6516 It's an experiment that shows how different kinds of observations impact the outcomes of certain phenomena on atomic and/or subatomic scales. In particular, the double slit experiment demonstrates that photons exist as both a wave and a particle.
Rather than explaining more than that, I'd recommend finding a video on here to explain more if you're interested. It's a lot of complex physics, and it's easier to understand with visuals.
I have been waiting for this video for ever! Thanks so much Benn for your incredibly high quality vids. Your physics / audio deep dives are my fave. Nobody else does it like you :D
The amount of work on research, editing and explanation is much appreciated! Great video!
Just a few days ago I was out on a really quiet hill at night and saw a plane flying silently on my right overhead, and a full 30 seconds or more later I could hear the sound of the plane on my far left, on the edge of the horizon. Really interesting to have any of this explained, it’s fascinating!
Well, that is simply due to the fact that sound takes time to travel. It could have been moving much slower than the speed of sound, but it was so far away that it took longer to reach you than it did to pass your position. It's the same reason why echoes have a delay.
who cares
This was a great video! For me and my own hyperfixations it's great to have such a plane explanation for why the V12/V10 F1 cars sounded like they do to the crowds relative to how much they scream at a near static pitch from the driver perspective.
I'm a dev & musician, and this one was tricky to wrap my head around. Your video does a great job of answering the question and breaking it down, thank you!
These videos are better at teaching physics than regular classrooms! Keep making them! 🙂
If I ask you about this video you won't remember a thing.
@@vjrei hehh go ask
@@vjrei Regardless, I listened to him, in my free time. It was impossible to listen to the physics teacher while being forced to go to school. So I definitely learned more about this topic here than in school.
@vjrei probably true for me too but if I take away one thing I want to remember that sonic booms are when the water vapor caused by a decrease in temperature cavitates like in a bottle. I didn't know that and it's very interesting so I had to tell someone.
@@Yoshi92 unfortunately he got several bits of physics wrong though, so you should continue trying to pay attention in your physics lectures :)
Great video! Love these complex hypotheticals explained simply
I love these science/physics vids cause you do a wonderful job of breaking it down and make the learning fun.
science is FAKE!! fake news, all fake..THE MIGHTY POWER OF JEBUS CAN EXPLAIN THIS
Seems like the conceptually easier way to look at this is to put the sound source at rest in the atmosphere and then move through the pressure-wave field at high velocity. Then listen to the music from the rest frame of the aircraft. This would remove or limit some of the confounding issues and it would be pretty easy to see that you encounter the waves in reverse order.
To be fair, that was the original question as well. The observer was moving at twice the speed of sound and the emitter was stationary. This does allow for the problem to be trivialized; it's far more controlled as you could then assume the observer had zero drag.
This was awesome! Not only music but also scientific content. Love it! 👍
Fun fact: You can use the Doppler equations and the recording of the drone to calculate the aircraft velocity with a fairly significant degree of accuracy.
that wasn't fun, it was just a fact.
what a cool video :) i love how u took it so many places to get at what was interesting about the question, rather than just answering it to the letter
1:50 this is why i like hearing about concepts I already know, and that is someone will explain it in a new way and give me a whole new perspective and way of modeling how our universe works. comparing sound waves to arrows and talking about them losing energy.
this one is gonna be fun. Just finished compressible fluids class
Oof. That's some deep maths. 🤕😅
@@BennJordanThe video was great and managed to not give me ptsd. Good stuff man.
Curious viewer here. Are there types of compressible fluids other than gases?
I must admit I asked myself the same question when hearing passing sirens and thinking of the doppler effect, glad you chose this subject :)
I LOVE this! I started off studying the scalar science as I'm a sound healing dj looking for unique methods to improve my platform. This is really opening another world for me!
I’ve lived beside a busy road all my life, and always thought the sound of passing cars to be quite meditative. I’ve recently made a patch in VCV Rack to emulate the Doppler effect and inverse square law for sound intensity. It takes the perceived change of pitch and soundstage width as inputs. It then calculates the speed of the object that would create that change in pitch, and outputs individual pitch and volume CV’s for left and right channels. It’s so awesome to see someone tackle this from the sound design side of things! I might try to incorporate the sonic boom as a kick next!Keep up the great content!
New question: Fly in a circle at Mach 1 -- does the center of the circle hear a continuous sonic boom?
I think you would hear it once and then constant higher-pressure zone. Great question
I feel like he ready answered this. He said sonic boom is continuous, so yes.
Interesting! Now assuming the same holds true for light, can you test really quick (literally, hehe) if a movie plays backwards when the screen moves at double the speed of light? But let's make sure the sound stays in sync!
I've done simulations in paint, and yeah, if someone is moving at these speeds, things get weird.
at the speed of light coming towards you: it would look as though they are perfectly stationary, and suddenly appear in front of you. you would also see the light that reflected off of them from every point in their journey, which is a lot of light - they would appear bright. and as though they existed at every point in the journey simultaneously - pretty weird.
if they were going 2c, then things get really weird - it would appear as though they teleport in front of you, and they make the journey in reverse (at .5c) to where AND when they left - all while simultaneously standing in front of you!
keep in mind this would look pretty weird from their end, too - their fov would massively increase, as light that would have been coming from the side or even slightly behind them is going slower than they are, giving them a change to "catch up" with it, making it initially appear as though they are actually getting further away from their destination, even though they're doing the opposite!
@GladeSwope it depends on the journey. if it goes through a particularly bright area, or takes a particularly long time, then there's potential to "build up" quite a bit of light, yes. but over a distance like from here to the moon, probably not.
coolest channel i've stumbled across in years, thank you for making me use my brain again Benn!
You are unique and so is your work. Thank you for all your efforts!
As someone that designs my own sounds for my music I love how you did the sound design here, especially in the 3/4th the speed of sound part. It sounded like it was actually traveling at that speed. Great job matching that up.
It’s also wild to me that humans figured out how to travel that fast, but we decided against it because it sounds like an explosion and would freak people out.
We went from horses and buggies to traveling so fast through the sky that it makes explosions in less than a century. Humanity is actually crazy
It's not just because of the noise it makes. It's a compromise between speed, cost and payload/passenger capacity.
In L.A. I met a guy who claimed to make the first doppler fx sound for The Jetsons in the same building where my music store was.
Cool video, very impressed with your math processed sound examples, and for explaining the sonic boom so well.
Absolutely fantastic video - this kind of video is what makes CZcams shine as a platform!
The level of the models displayed in this video was outstanding! Thankyou for this amazing video
I loved this! You should do more physics videos!
I always hated physics because my teachers never were like you. What an EASY to understand explanation and absolutely perfectly visualized!!! Instant sub! 😁
Same. My physics teachers always were boring and/or extremely quickly irritated. Just throwing a bunch of formulas at you that you have to memorise, now and then a simple boring experiment with which you have to use one of those formulas, but everything always was done in such an uninteresting way.
@@MarcelNL The problem is trying to just memorize the formulas rather than trying to *understand* the formulas. Part of the reason why teaching that can be difficult is that you may lack the mathematical tools and understanding to really be taught where the formulas come from. Like the formula s = x + ut + ½at² to describe the distance traveled by an object with a given velocity and acceleration over a given time can be difficult if you just memorize it, but if you understand what ut and ½at² are and why they are there and why they look like that, it becomes much easier to remember it. But it is difficult to properly explain why it looks like that without going into integrals. So if your math studies aren't far enough that you actually understand integrals, things just get difficult to explain.
Honestly, university physics was where I learned things way easier than in high school exactly because at that point I already did have the tools to properly understand what is going on. So when the teacher just started prodding into the physics of literally everything there is with the statement that when an object with velocity v travels for t seconds, it moves s meters, and then just expanded from there all the way to electrics, hydrodynamics, orbital mechanics and nuclear physics, it was actually funnily enough way easier than physics was in high school. Velocity is just the integral of position over time. And acceleration is just the integral of velocity over time. If you know that and understand what integrals are, s = x + ut + ½at² just kind of falls on your lap. That's when you *understand* rather than memorize the formula.
I fully, FULLY understand you!
Actually I often asked what the formulas were based on, and that usually would make the teachers angry: "You don't need to know that! Some scientists who are far more intelligent than you have done tests and these formulas are the results of those tests so just memorise them! You don't need to know the how or what!"
Same with the Sin Cos and Tan buttons on the calculator. I asked what those buttons do exactly, and again I didn't need to know that; far more intelligent people than me have made calculations and these calculations are now under that button and I just needed to know when to push that button with certain formulas that I needed to memorise.
I loved chemistry and biology; that was all easy to understand but physics I really hated.
Same with what we used to call Math A and math B.
Math A was very simple; straightforward understandable real life examples that you had to make calculations with. The more factors those calculations had that you had to work with, the more exciting I thought it was.
Math B was again with those formulas that you just had to memorise. Obey the teacher, don't ask questions. Just follow orders. Be a drone that doesn't want to grow, just function the way you need to. @@Murzac
Dude, this is awesome. Great work!
this felt like the long version of an xkcd comic, i.e. absolutely nerdtastic!
Thanks for your efforts and a great video. Is the backwards sound played only for a moment, as you say at the end? Isn't there a continuous path of it behind the speaker, the same as there's a path of sonic boom[ing]s?
The amplitude will be dropped so much by then I guess. He should do a theoretical when speed sound is just.. 10 m/s?
Wait a minute ... would this phenomenon apply to leslie cabients too, assuming we rotate the speaker twice the speed of sound?
10/10 for this one! Excellent video, and learned a bit of science too!
Can't begin to tell you how fucking DELIGHTED i am to watch this! You Sir are hilarious in a GREAT WAY!!!
Benn Nye the soundience guy
So basically can you do through-zero FM by moving stuff around really fast?
You just blew my mind - I think that's totes true and yet never would have thought of it in such an elegant way!
This is beautiful. Thank you.
This is the first video of yours that I have seen. It is so well done that you got my subscription. Have a great day.
I just did the same lol
the amount of fun in the question definitely directly correlated to the amount of fun in the video. I also liked the Fibonacci sequence shirt when talking about the whip, nice touch
Gosh. I love these videos. Thank you. :D
Stumbled into this video while scrolling and found it fascinating. Definitely a well-earned hit of the bell icon
Great video and crystal clear explanations for someone who isn’t number savvy 🎉
I've wondered about this question since college, I asked my prof but I don't think I phrased the question well so I didn't get a satisfying answer. Thanks for clearing it up so many years later!
This is such an awesome video. What a cool simulation! This is a real fun video compared to your others. I love the edits you did too 😂 bravo
This is awesome thank you. To me breaking the sound barrier is like 4th dimensional to me, so it was cool to learn how that actually works and then that if you go twice the speed of sound some cool stuff happens
Love psychoacoustics and physics, especially audio physics. This presentation was fantastic!!!
THANK YOU for finally answering one of my biggest mysteries!!! The constant sonic boom! THANKS!!!!!!!
The question makes me think of hypothetical tachyons, and how if you could see them, there would be nothing at all until suddenly two of them shot away from you in opposite directions, all purely due to doppler effects (and the tachyons outpacing light, of course).
Well now I need supersonic rotary speakers. Probably made of carbon fiber and superconductive wire motors. And unicorn dust because why not.
As I'm sure you have I've certainly used a lot of audio software that simulates Doppler effects, and even recognize the insane "chirps" you demonstrated here and now wonder why they don't make audio play backwards but, as always, I loved your video
One thing you could do to make it easier to hear in your simulation would be to record the same scenario (speed, position, etc.) with and without the letters, then invert one of them, align them, and that would cause the boom to cancel out. You could theoretically do something similar in real life, but because the variables couldn’t be controlled as tightly, you would need to train an AI or something on the sound of the vehicle/boom and use that to isolate the sound from the speaker.
This was a relatively short video but felt long with all the info packed in. Super impressive.
this video was fun! but lots of work, thank you for putting in your effort
Thank you for scratching the music and science and humor itches all at the same time.
This is why I love your channel
I want that shirt, benn. merry christmas?!? oh, & supercool essay too!! yaaay!!
Very cool video, love the way you explain things. Question on the instrument behind you, I couldn't tell because of the focus, is that semi-fretted?
Well made Benn, was fun to watch.
I was still scratching my head for awhile on how does this work. Yes, I'm a bit slow.
I feel like the crux of the matter was somewhat skimmed over in a few second of animation. It's there but not really explained visually.
What helped me visualize this better was pausing at 7:17 and naming the last circles A, B, C, D and actually seeing in what order they got the the listener.
That studio tan when outside in the sun almost blinded me
I actually have a physical copy of The Theory of Sound (volumes 1 and 2) that I got for free from my school's free book pile. Neat stuff!
I love these little experiments!
In my understanding the question is related to a situation, where you are on the plane and the speaker which plays the music is on the ground, at stationary to the air (and we assume that we eliminate somehow the wind noise of the plane without blocking the music from the outside). However its a much simpler situation with way less thing needed to take account.
This was fascinating. I don't know a thing about sound engineering/design stuff. I was entranced still.
I am not into music that much, but i really enjoy learing interesting things in general, especially with teacher Negan.
Such a good video! Thanks :D
By golly gosh that was interesting!
Thanks, Mr. Jordan
Astounding! I really enjoyed this. Good question "Caleb-bunch-of-numbers".
Still trying to understand the Sonic Boom only happening once for each observer.
loved this video!!
Amazing video! Thanks!
thank you, Ben
Damn coming from being a flashbulb fan, I just found out you have a really cool youtube channel. Hell yeah!
That is such a cool fact!
i never had this question but i can't wait to find out
holy shit I really love your channel man!!!!!
woah! .......... Your work is crazy! THANKS for this great entertainment & education + Music :D
Then you get whole body resonamce and harmonics of the medium itself.... When things start appearing here and there simultaniously... With Source moving faster than the inductance of the medium... Hence acting like light and quantum phenomena... Tranvserse across the dielectric plane of inertia... Playing forward and backwords in time simultaniously..
Excellent video. You've dived more into actual understanding of energy and matter than any agency would admit...
Only thing, dense atmoshere increases permiability and rerifraction speed. . of sound as sound is medium based...
Such an awesome video. Thanks for the hard work.
Question: What would happen if we sped up the play back from the loud speaker on the drone proportional to the drone's speed, assuming that 0 M/s is the "natural" state. As an alternative to creating a tungsten hellscape?
We would probably have to record what the observer hears and then play it back at a regular ratio so we could hear it go backwards?
Context:
From what I understood we had to go into the tungsten hellscape cause we needed to fly the drone slow enough to give the loud speaker enough time to produce the alphabet, otherwise we fly over it before anything meangingful was produced.
An effect very similar to the doppler effect also applies to light and this is used to calculate both the speed of the expanding universe, and can even be used to calculate the distance/mass of certain stars.
Always wanted Jon Hamm to go over some practical Physics 223 with me, thanks man.
This was the most awesome thing I came across at random today.
I first noticed this when a motorcycle passed me and the tempo sped up as it approached but slowed as it drove away
been following you since pale blue dot. love to see your channel grow!
So smooth into the intro music
the wave form is lagging behind the drone making the first part of the sine wave of the word being played last and the last part of the sound is played first . and the letters are also in reversing order meaning you hear D (backwards) first and A (backwards) last and then as it passes over you hear A (normal) first "in lower tone" and then D (normal) last.
😀 schöne Fragestellung 😀 und hervorragend beantwortet - mit Spaß vorgetragen und auch graphisch sehr gut dargestellt! 👍👍
cool. It might be interesting to also consider what happens at high "accelerations" as opposed to just high speeds (velocities)... also how that would extend to the speed of light, out in space somewhere. the speed of light, c, being the speed of actual causality/reality.
This is awesome!
What if you run the drone at speed of sound, then you travel in the opposite direction at the same speed? That’s the same case as you staying still and the drone flying at double the speed of sound no?
This was awesome. First video of yours I've ever seen.
Could we hypothetically hide formulas and secret codes using the Doppler effect?! Slowing the sound down and reversing it?