Modern Rogue: this is just a random idea, but if you really want to make a parabolic mic, maybe try getting an old satellite dish from a junkyard? i mean, those are properly calibrated to accurately pick up a TV signal. Stands to reason it would work for analogue signals as well as digital.
Robertlavigne1 The fact that the other is a satellite dosh designed to be really accurate with reflecting the shit, you know... and then the other one IS A FUCKIN NOVELTY HAT
Mrmoocows99 gaff tape is a term for electricians tape, tape that expands and becomes sticker as it’s stretched. Causing it to contract around what it is placed on. They used duct tape, though, your point still stands true
@@sevenblizzards7077 This is incorrect. There are actually multiple ways that gaffer's tape is different than both electrical tape and duct tape but the primary difference is that gaffers tape is cloth-backed. I would recommend taking a look at the Wikipedia for gaffers tape for some more info. Also, you can see that the tape being used is labeled as "Gaff" at 7:18
Fun experiment! It looks like your boom may be too long. If you trace a ray coming in from the front parallel to the boom but offset to the side a bit, it looks like it would hit about halfway (or less) up your boom rod. One way to determine the focal point might be to put a few pieces of reflective tape at various points and shoot a laser straight in from a distance: see where the point lands. Also, the umbrella is not parabolic which means you won't have a single focal point and that can actually cause sound cancellation when some of the sound hits the mic out of phase.
I hope they tried adjusting the distance from the mic to the umbrella off-camera. I would think there would be a zone where if you are touching or almost touching the umbrella and then out for quite some way, that you would get at least a little boost, but I also think if you go too far away, then you get no boost at all. I wonder if they were just too far away.
soo would it be socially acceptable if i got stopped by the police because i was burning then smashing things in the street and my only excuse is me yelling "The Internet!!!"
They've got parabolic mics (kind of) at the Pacific Science Center in Seattle! At one of the entrances, there are two parabolic reflector things about 50 feet apart. If one person whispers into one disk and one person listens to the other, you can still totally make out what they say! I know I'm about a half a year late for this video but I'm going through the whole playlist now :^) Gotta rep Seattle when I can, lol
Hey Modern Rogue! Just a hint: The microphone that you use matter. You must aim for a high sensitivity directional mic. It might worth a shot to create a simple high gain low noise amplifier for this task probably with some filtering. Search for super ear circuit. It is very interesting and not that complicated as it sound.
My grandparents live in a canyon type place and they can hear people having a conversation that are maybe about a mile away from their front porch... kinda creepy😂
Peter Black me too. hell... I even miss the hair. For just one upload, He should spike it like he used to..and not mention it at all. Just do the video as if he didn't have sonic the hedgehog on his head.
Oh, darn! Your precise vision determined it not to be a parabola! If only someone would have discovered the equations for other conic sections, or a general way of determining normal vectors from a set of coordinates! But alas, such truths are beyond mortal capacity!
Maybe because they were in the middle of an episode, and the production of an episode tends to cost money, so in an almost literal sense, time is money. Or yknow, the fact that unless you’re doing it everyday, you’re gonna forget it because frankly calculating the peak of a parabola or any other curt for that matter is a skill that you never use in the real world without being under very specific circumstances. So just lay off it, cause they didn’t and it doesn’t matter.
You don't have to calculate jack, you simply move the mic in and out while recording and keep it in the spot where the sound was the loudest. We care because we like to see them succeed.
I haven't finished watching the video yet but I would've made the microphone adjustable so that as I'm recording I can adjust the microphone up and down and find the exact focus.
2:38 in a place where i worked at (it was a science place) we gad an ecosphere and it was made from triangles in such a way that the sound was directed from one side of the room to the other, it was so cool, you could hear someone whispering from a far
Couple of suggestions: 1. Tin foil instead of cards. 2. Attach the mic to an adjustable antennae so you can easily dial in the focal point. I would be willing to bet your results would improve significantly.
Get one of those metal mixing bowls used for cooking and drill a hole in the middle for your metal handle. I'd think it would work better with less effort!
I don't really see the point of posting a video like this. I mean, in the end you failed, right? It's just you fucking around with a weird hat and a cheap microphone xD. And you got me hooked for a good 15 minutes for basically nothing. I feel like I wasted my time! You usually post great quality, very entertaining videos, keep up with them!
I think it would work way better outside or in a hall. The mic is picking up A LOT of sound that bounces from walls. So you aren't just recording the point source. And you're giving the umbrella hat too much credit, its a (really!) bad parabola.
Maybe assuming sound waves behave like light waves was problem #1. I think if you augmented the parabolic material into that of like a speaker, making it taught, using the vibrations to amplify the sound directly to the mic may give you better results. The cards would work for focusing light but I think they would hinder the sound by dissipating the vibration through the increased amount of edges of the cards. I could be totally off but just a thought.
I have no knowledge whatsoever about the physics of sound. but I did buy my son a parabolic mic for Christmas. the cone was deeper than it was round. I think that narrowed the area of receipt and allows for a more focused listen. we were able to listen to Whispers from across our house. wind chimes from about maybe a hundred and fifty feet. I'm guessing that maybe because your cone was so wide you might've heard much more focused sounds at a longer distance though it would have been quieter. I'm not going to lie I like to play with parabolic mic concept some more. it fits my son's love of spy gear and kind of tickles my modern Rogue appeal
Why didn't you just line the inside of the umbrella with duct tape? I feel like the cards would create too many inconsistencies and you would lose the focus point.
adding a cup/cone around the mic pointed back at the umbrella may be useful. that would make it a directional mic technically and it would collect the sound better and prevent outside sounds from reaching the mic. also what might help is if the umbrella was a tighter cone and not so wide. here is a example of that idea. wildtronics.com/images/slideshow/parabolicheld.jpg this could be the bowl its cheap and easy to use for the big bowl www.partycity.com/product/caribbean+blue+serving+bowl+10in.do?kwid=caribbean%20blue%20serving%20bowl&qcid=&ref=ci&extcmp=pla%7CGoogle&gclid=Cj0KEQjw6LXIBRCUqIjXmdKBxZUBEiQA_f50Pn9uCdfRu2Nc_SyIgKMCY74IbE3CjUNkQTSPsGABkYIaAh5G8P8HAQ and use this for the small cup/bowl www.ebay.com/p/?iid=222449271744&lpid=82&ul_noapp=true&chn=ps&var=521309662298 these are examples of cheap things you can use. also the "pop filter/wind brake" might soften the sound and it might be louder with out it on
You guys should be using something that reflects sound waves and not absorbing sound waves like aluminum foil. With all the tape and the seams of the small cards the sound waves are breaking up it's got to be smooth so sound waves can bounce evenly you should try it with a satellite dish they work much better. You guys seem to be very lazy when doing your test. Sorry for the insult but I call it the way I see it.
Hrm, I wounder if this idea could be used with something like one of those giant popcorn or Halloween candy bowls? It seems like it'd be smaller, but more precise and thicker.
Have you considered getting some sort of better reflector instead of an umbrella with plastic playing cards? I mean, I saw in another comment that a satellite dish is not DIY enough for you, but how about a plastic salad bowl or something like that instead?
I would say part of the issue here is probably the fact that the mic is not centered but it placed on one side of the pole as i would assume the best way to capture the sound is to have a custom made mic wrap shaped in a circle getting a 180 degree angle capturing sound (not that I expect you to do this its just an observation) also that very bad assumption of where the focal point might be
You guys are the greatest. Your content is so unique and refreshing and the nerdy banter and jokes between you two really brings everything together. Lets get modern rogue to a million subs!
"I think we need more precision". Well, I think you might need a parabola in your attempt at making a parabolic mic.....otherwise it is just.....a mic.
I think if you took the time to figure out the perfect focal length of the parabola in the hat and actually tuned to THAT you could have a decently good 'cheapo mic" but I got to agree that it sounds cool, and is doable, its just given what you had... it sadly kinda failed :(
Keep in mind, we did get to see exactly where the focal point was once all the cards started reflecting light... there's no reason to expect sound waves to bounce a different direction that light waves, right?
@@ModernRogue I disliked your comment because you need to revisit this project, your focus was sloppy and the construction was sub par. I know that you can do better. You will be glad if you get it right, because parabolic mics are awesome. Use a better parabola next time. Maybe a big flashlight (3 million candle power one, though I'm not sure if they still make these), or a vacuum stretched mylar sheet, there are videos here on UA-cam explaining how. All that being said, I hope you forgive my trash talk about your attempt.
*Parabolic mic story* I had a "spy" toy as a kid that looked kinda like this. My neighbor left his window open one afternoon, so i listened in; I ended up hearing him beat the crap out of his wife. That's a lot for a 3rd grader. I was too afraid to call the police, because I thought they would arrest me for being a spy. (I totally thought I was james bond as a kid.)
It's crazy how naturally your dialogue flows, and how you're amazing each other with new ideas and stories the other person has never heard. A lot of that spontaneity would probably be lost if you researched and prepared these videos together.
Try it outside, I think what may have lessened the effect of the parabolic mic. was the sound waves bouncing off walls, thus providing great sound quality regardless.
why using a novelty umbrella hat, when you can use a discarded satelite dish ? Brian, will you have other pvc playing cards than those golden ? like the arcana one made of pvc sheets ?
If you're like me and do everything ad nauseum then here's something that'll make this a little easier. Setup a parabolic function on a poster board you measured out like f(x)=(1/8)(x^2) then measure out some dots to base your graph on, then put a lot of x values into the function and do it on your calculator, mark dots at every on of the values of he function, once this is one you now have a template of a parabola and use that template as a guide to bend some steel wire into that shape; do this multiple times until you have a large amount of these steel wires. Now, a little bit of calculus. The focal point will be at the point along the y axis between the point of the slopes being 1 and -1; this is found by finding the derivative function of the one which ends up being f '(x)= (1/4)(x^2). The value of f '(x) is equal to the slope at that x value so the algebra ends up being: f '(x)= (1/4)(x^2) f '(x)=1 1= (1/4)(x^2) 4=x^2 x=2 What this means is that you're going to measure two of the units on your poster board out, then go straight up. Do this to the other side and then do it to the rest of them, the exact midpoint between your two marked lines will be the focal point. Array of your steel wires in a circular formation so it looks like a cone and then cover the inside with some aluminum plates (just go to home depot). Align your speaker's receiving end with the focal point and there you go. A parabolic mic, and replace the plates with reflective mylar and there you have a parabolic mirror capable of burning stuff.
no point in scrapping it if you didnt test where the focal point is. just like how eyes work. everything is blurry until youre in the exact right position.
XX CQ XX
ATTN AGENTS
SHURIKEN AND THROWING CARD KIT GIVEAWAY AT HTTP://GIMME.SCAMSTUFF.COM
NO CODEBREAKING REQUIRED. HAVE A GOOD WEEKEND.
XX GL XX
The Modern Rogue wow. Thank you. I will have a lazy weekend not deciding any codes
*decoding
I honestly feel kinda cheated now. :[
Grilled cheeeeeese...
HAHA i said i would start decoding for the first time, since the anouncment the new codes, the next modern rogue video but seems like i dont have to.
I 100% support lighting more stuff on fire for no reason.
Eoin Oravetz I second that motion
Eoin Oravetz I third that motion
I support this.
Oh and sledgehammering it!
There needs to be a gif of it.
*Tapes broken paint roller to umbrella hat*
"Does that look right to you?"
"I got the fake turd instead ...
'CAUSE I'M A MODERN ROOOOOOOOOOOOOOGUE!!!"
lol
Hey Tracer!
I came down here to comment that
modern rooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooge
I actually thought that paint roller was a microphone for a good 5 seconds.
Kevin Balderrama You silly goose
Kevin Balderrama Don't worry me too lol
I thought so too, but then I realized that using a shotgun mic for the experiment wouldn't make sene
well I'm about half way through the video and I now realize your right
Kevin Balderrama you just pointed it out to me •_•
Modern Rogue: this is just a random idea, but if you really want to make a parabolic mic, maybe try getting an old satellite dish from a junkyard? i mean, those are properly calibrated to accurately pick up a TV signal. Stands to reason it would work for analogue signals as well as digital.
I thought that's what they were going to do.
I think that's technically called "just buying a parabolic mic," which sorta takes the DIY out of the equation.
Modern Rogue: but you were okay with buying a parabola in the form of a hat. What's wrong with a parabola in the form of a satellite dish?
Robertlavigne1 The fact that the other is a satellite dosh designed to be really accurate with reflecting the shit, you know... and then the other one IS A FUCKIN NOVELTY HAT
dish you fould at junkyard = parabolic microphone
"We're like, the MacGyver of Garbage"
Sooooo, just MacGyver then.
next make x-ray glasses
i will finally be able to see throught the pants of the thicc girl of my class! yes!
***** lol
I want a Giant Megaphone that can make Fart Noises across the English Channle
Chris just eat enough grilled cheese
Chris Ng check out colinfurze fart at France
I'm so early there isn't even the giveaway on the comment section!
Yep, I'm only here for the code haha. I can watch the video whenever.
Just Hawk same
I honestly don't think there is a code this week. The giveaway page has no text box for the hidden code.
Just Hawk HAHA the giveaway was put 22 minutes ago 😂😂😂, thank me later
Early as in pregnancy?
that hat is probably one of the most useful inventions i would never use
ahhh Kramer
Right it's sort of more convenient than an actual umbrella is
Honestly I used mine all the time till it broke lmao
"Gaff tape does everything"
As the person who works in Theatre, that is a fact. It's better than Duct-tape.
Mrmoocows99 gaff tape is a term for electricians tape, tape that expands and becomes sticker as it’s stretched. Causing it to contract around what it is placed on. They used duct tape, though, your point still stands true
@@sevenblizzards7077 This is incorrect. There are actually multiple ways that gaffer's tape is different than both electrical tape and duct tape but the primary difference is that gaffers tape is cloth-backed. I would recommend taking a look at the Wikipedia for gaffers tape for some more info.
Also, you can see that the tape being used is labeled as "Gaff" at 7:18
SevenBlizzards 707 god dam you are so edgy
How do you guys have insurance to do this when Brian is just freely setting fire to whatever he wants?
Aren't they in Texas? What is insurance?
@@maxinator80ify A scattergun
Fun experiment! It looks like your boom may be too long. If you trace a ray coming in from the front parallel to the boom but offset to the side a bit, it looks like it would hit about halfway (or less) up your boom rod. One way to determine the focal point might be to put a few pieces of reflective tape at various points and shoot a laser straight in from a distance: see where the point lands. Also, the umbrella is not parabolic which means you won't have a single focal point and that can actually cause sound cancellation when some of the sound hits the mic out of phase.
Well, we already have reflective pieces in there... 52 cards worth, to be exact.
make a metal foundry/forge and make the gentleman's weapons yourselves
Tyler Flint That would be super cool
Tyler Flint tons of pommels.
Bordermemes I see that you know medieval forbidden techniques
Ximarre You have to nowadays for a pommel is the only way to end someone rightly.
Macgyver-ing is the theme of this show apparently
Dzimina
yeah..but.... all this shit'll actually work
Maybe the microphone was just too far away from the umbrella parabola
That's what I thought too. Maybe pull the mic back inside the parabola some more.
there is a formula for a focal point of a parabola, don't know why they didn't use that
They are never that exact in science, I guess, that's the charme of a Modern Rogue...
yup, which they were a little bit more exact or at least try to be
I hope they tried adjusting the distance from the mic to the umbrella off-camera. I would think there would be a zone where if you are touching or almost touching the umbrella and then out for quite some way, that you would get at least a little boost, but I also think if you go too far away, then you get no boost at all. I wonder if they were just too far away.
soo would it be socially acceptable if i got stopped by the police because i was burning then smashing things in the street and my only excuse is me yelling "The Internet!!!"
Only one way to find out....
Challange accepted. Its hold my beer time.
Chris Kowal why are you on computer, go outside so beautiful *ungh!*
Congrats on 300k guys. You're my favorite pair to watch!
Tommy Callaway 607k about a year later
Omar Leyva Gutierrez they still deserve so many more. These guys do more work than GMM, and actually educate people thoroughly.
They've got parabolic mics (kind of) at the Pacific Science Center in Seattle! At one of the entrances, there are two parabolic reflector things about 50 feet apart. If one person whispers into one disk and one person listens to the other, you can still totally make out what they say! I know I'm about a half a year late for this video but I'm going through the whole playlist now :^) Gotta rep Seattle when I can, lol
k...
Someone need to take all the stupid thinks they say and add 'CAUSE I'M A MODERN ROOOOOOOOOOOOOOGUE!!!" .this deserves to be its own meme.
Haha-- I like that idea. Post timecodes when other people's channels say stuff that sounds like an intro...
I love you, Brandt. Thanks for having the "uhh where's the sledgehammer" part in. I died.
#GRILLEDCHEEEEEESE
Max Fury you mean so much to me!
Grilled Cheese, you're so mean!
Quite possibly the cheesiest song known to man & beast!
Yooooo 300k!!!! Congrats on the milestone guys. Love the show
Alfred von Schlieffen this comment was also 3 months old genius
Hey Modern Rogue!
Just a hint: The microphone that you use matter. You must aim for a high sensitivity directional mic. It might worth a shot to create a simple high gain low noise amplifier for this task probably with some filtering. Search for super ear circuit. It is very interesting and not that complicated as it sound.
"cut a tiny hole"
"ok"
*stabs right through*
The hat is not a true parabola. Do the math and make one out of cardboard and aluminum foil.
robert jeffery Sure, it's not a true parabola, but it is a decent approximation.
My suggestion was to try again with different junk.
I'd say its a lot harder to approximate a parabola with cardboard and aluminum foil than with an umbrella hat.
robert jeffery I made a solar cooker in Cub Scouts in the '70s. How hard could it be?
Yes please redo
If you get a junked old satellite dish, you've got all you need.
That's a little bit like saying "if you get a parabolic mic, you'll have a DIY parabolic mic!"
What if you use a 5 gallon bucket?
Anyone else just want those golden playing cards?
your pofile picture is my answer
Vallu M check their website they're a thing you an buy now!
kipkay made one from a megaphone. i dont like kipkay
My grandparents live in a canyon type place and they can hear people having a conversation that are maybe about a mile away from their front porch... kinda creepy😂
Great video !
Btw big fan since the first episodes of scam school
Peter Black me too. hell... I even miss the hair. For just one upload, He should spike it like he used to..and not mention it at all. Just do the video as if he didn't have sonic the hedgehog on his head.
Why didn't they calculate the height of the focal point themselves? It isn't hard to calculate the focal point of a parabola.
I know. Like junior high math. Really weirded me out when they're like "I guess we just have to guess".
Because it's not a parabola
Oh, darn! Your precise vision determined it not to be a parabola! If only someone would have discovered the equations for other conic sections, or a general way of determining normal vectors from a set of coordinates! But alas, such truths are beyond mortal capacity!
Maybe because they were in the middle of an episode, and the production of an episode tends to cost money, so in an almost literal sense, time is money. Or yknow, the fact that unless you’re doing it everyday, you’re gonna forget it because frankly calculating the peak of a parabola or any other curt for that matter is a skill that you never use in the real world without being under very specific circumstances. So just lay off it, cause they didn’t and it doesn’t matter.
You don't have to calculate jack, you simply move the mic in and out while recording and keep it in the spot where the sound was the loudest. We care because we like to see them succeed.
will there be a hacking the system season 2? :'( but this series is cool too. Grats on 300k subs
I haven't finished watching the video yet but I would've made the microphone adjustable so that as I'm recording I can adjust the microphone up and down and find the exact focus.
6:03 sums up the internet pretty well
Rip aricibo observatory
2:38 in a place where i worked at (it was a science place) we gad an ecosphere and it was made from triangles in such a way that the sound was directed from one side of the room to the other, it was so cool, you could hear someone whispering from a far
I would recommend that you put a cap on the opposite end of the lav, it will cut out the extra noise coming from the side from the AC
ooh, good suggestion!
I'm looking forward to the video where you take a dumb parabolic microphone and show us how to make a functioning umbrella-hat out of it.
Kinda sad watching this now in late 2020 and hearing them bring up Aricebo, rip radio space telescope
Ikr
Yet another victim of that (deity of choice)awful year. And of course I recognized it as the Cradle from GoldenEye.
Couple of suggestions: 1. Tin foil instead of cards. 2. Attach the mic to an adjustable antennae so you can easily dial in the focal point. I would be willing to bet your results would improve significantly.
Been on a binge watch Modern Rogue marathon. You guys are like the spiritual sequel to the MythBusters to me.
Get one of those metal mixing bowls used for cooking and drill a hole in the middle for your metal handle. I'd think it would work better with less effort!
Inconspicuous spy gadgets...
I don't really see the point of posting a video like this. I mean, in the end you failed, right? It's just you fucking around with a weird hat and a cheap microphone xD. And you got me hooked for a good 15 minutes for basically nothing. I feel like I wasted my time! You usually post great quality, very entertaining videos, keep up with them!
The modern rogue burning down studios since 2016
I think it would work way better outside or in a hall. The mic is picking up A LOT of sound that bounces from walls. So you aren't just recording the point source. And you're giving the umbrella hat too much credit, its a (really!) bad parabola.
that acetone + sledgehammer part was more cringey than brians previous haircut lol
Tacettin Koşar LMFAO
That haircut really was quite dreadful. Brian clearly outgrew that look decades ago.
Maybe assuming sound waves behave like light waves was problem #1. I think if you augmented the parabolic material into that of like a speaker, making it taught, using the vibrations to amplify the sound directly to the mic may give you better results. The cards would work for focusing light but I think they would hinder the sound by dissipating the vibration through the increased amount of edges of the cards. I could be totally off but just a thought.
Really weird illusion at 2:20 (focus on the umbrella for about 10 seconds)
The Razors Edge Yeah, at 2:24. That's weird
Yeah it looks like his hand disappears, because he flips the umbrella just right.
That's Tim's 3d dragon illusion.
You should've checked the focal point of the parabola.
Here is a neat picture for you.
www.pbs.org/wgbh/nova/education/activities/3406_solar_03.html
I want those cards... but I cant find them on Scamstuff. :(
www.scamstuff.com/products/card-target-throwing-star-kit
Good guy brian
Please call this series of experiments where you make cool toys from trash and test them "Trashgyver"!
anyone else got grilled cheese song stuck in their head now . ?
I got the fake turd instead.
*CUZ I'M A MODERN ROOOOOOOOOOGUE!!!*
the problem for sure is in the angle, since every point wont bounce to the exact place where microfone is
It would've worked, just needed to be closer to the focal'ish point.
I have no knowledge whatsoever about the physics of sound. but I did buy my son a parabolic mic for Christmas. the cone was deeper than it was round. I think that narrowed the area of receipt and allows for a more focused listen. we were able to listen to Whispers from across our house. wind chimes from about maybe a hundred and fifty feet. I'm guessing that maybe because your cone was so wide you might've heard much more focused sounds at a longer distance though it would have been quieter. I'm not going to lie I like to play with parabolic mic concept some more. it fits my son's love of spy gear and kind of tickles my modern Rogue appeal
The Modern Rogue Rules
Why didn't you just line the inside of the umbrella with duct tape? I feel like the cards would create too many inconsistencies and you would lose the focus point.
Last time I was this early, the earlybirds were angry at me for waking them up.
adding a cup/cone around the mic pointed back at the umbrella may be useful. that would make it a directional mic technically and it would collect the sound better and prevent outside sounds from reaching the mic. also what might help is if the umbrella was a tighter cone and not so wide. here is a example of that idea. wildtronics.com/images/slideshow/parabolicheld.jpg
this could be the bowl its cheap and easy to use for the big bowl
www.partycity.com/product/caribbean+blue+serving+bowl+10in.do?kwid=caribbean%20blue%20serving%20bowl&qcid=&ref=ci&extcmp=pla%7CGoogle&gclid=Cj0KEQjw6LXIBRCUqIjXmdKBxZUBEiQA_f50Pn9uCdfRu2Nc_SyIgKMCY74IbE3CjUNkQTSPsGABkYIaAh5G8P8HAQ
and use this for the small cup/bowl
www.ebay.com/p/?iid=222449271744&lpid=82&ul_noapp=true&chn=ps&var=521309662298
these are examples of cheap things you can use.
also the "pop filter/wind brake" might soften the sound and it might be louder with out it on
Cong on 300 k
You guys should be using something that reflects sound waves and not absorbing sound waves like aluminum foil. With all the tape and the seams of the small cards the sound waves are breaking up it's got to be smooth so sound waves can bounce evenly you should try it with a satellite dish they work much better. You guys seem to be very lazy when doing your test. Sorry for the insult but I call it the way I see it.
if i go 3 units out shouldn't it be 1/9th as loud and not 1/16th?
Nirjhar Mukherjee he went out two more not one more
I see. Didn't see that. Thanks
Hrm, I wounder if this idea could be used with something like one of those giant popcorn or Halloween candy bowls? It seems like it'd be smaller, but more precise and thicker.
no it is not parabola
stop calling it parabolic
if you've got a beef, why not take it up with Wikipedia, rather than the UA-cam comments section? en.m.wikipedia.org/wiki/Parabolic_microphone
The Modern Rogue z
Abdullah Rahman boi get reckt
The Modern Rogue same, bitch.
en.m.wikipedia.org/wiki/Parabolic_reflector
Have you considered getting some sort of better reflector instead of an umbrella with plastic playing cards? I mean, I saw in another comment that a satellite dish is not DIY enough for you, but how about a plastic salad bowl or something like that instead?
2nd!
Dude, you're first.
I would say part of the issue here is probably the fact that the mic is not centered but it placed on one side of the pole as i would assume the best way to capture the sound is to have a custom made mic wrap shaped in a circle getting a 180 degree angle capturing sound (not that I expect you to do this its just an observation) also that very bad assumption of where the focal point might be
soooo... Did you know that lav mic is usually omnidirectional? you need unidirectional mic to make parabolic mic
a parabolic mic should be cardioid to pick up just the sound from the parabola. lav mics are almost always omnidirectional
You guys are the greatest. Your content is so unique and refreshing and the nerdy banter and jokes between you two really brings everything together. Lets get modern rogue to a million subs!
Why not take a highschool math class and find the real focal point?
You don't need math to see where all the reflected light was focusing. That bright spot? That's the focal point.
RIP Arecibo
5:57 ahhh now THIS is quality inernet content THIS IS WHY WERE HERE !!
"Let's figure out a way to also set it on fire"
the Modern Rogue in a nutshell
"I think we need more precision".
Well, I think you might need a parabola in your attempt at making a parabolic mic.....otherwise it is just.....a mic.
Great idea
shit product
Atleast you tried, that's what counts
I think if you took the time to figure out the perfect focal length of the parabola in the hat and actually tuned to THAT you could have a decently good 'cheapo mic" but I got to agree that it sounds cool, and is doable, its just given what you had... it sadly kinda failed :(
Keep in mind, we did get to see exactly where the focal point was once all the cards started reflecting light... there's no reason to expect sound waves to bounce a different direction that light waves, right?
@@ModernRogue I disliked your comment because you need to revisit this project, your focus was sloppy and the construction was sub par. I know that you can do better. You will be glad if you get it right, because parabolic mics are awesome. Use a better parabola next time. Maybe a big flashlight (3 million candle power one, though I'm not sure if they still make these), or a vacuum stretched mylar sheet, there are videos here on UA-cam explaining how. All that being said, I hope you forgive my trash talk about your attempt.
*Parabolic mic story* I had a "spy" toy as a kid that looked kinda like this. My neighbor left his window open one afternoon, so i listened in; I ended up hearing him beat the crap out of his wife. That's a lot for a 3rd grader. I was too afraid to call the police, because I thought they would arrest me for being a spy. (I totally thought I was james bond as a kid.)
I liked this comment. but not because of your scary experience, I'm sorry for that. But because you got the dirt on that guy like a real spy.
It's crazy how naturally your dialogue flows, and how you're amazing each other with new ideas and stories the other person has never heard. A lot of that spontaneity would probably be lost if you researched and prepared these videos together.
Fridays are the best cause of you studs!!!! Like if you agree!!!
How do I get my friends to realize how awesome this channel is and get them to subscribe without using physical coercion O,O
who said coercion needed to be off the table? ( ͡° ͜ʖ ͡°)
Try it outside, I think what may have lessened the effect of the parabolic mic. was the sound waves bouncing off walls, thus providing great sound quality regardless.
Is that umbrella even parabolic? Just say'n
Last time I was this early I had to buy Plan B
3:36 "I got this on amazon." Jason Murphy's catchphrase for MR.
why using a novelty umbrella hat, when you can use a discarded satelite dish ?
Brian, will you have other pvc playing cards than those golden ? like the arcana one made of pvc sheets ?
We don’t have the arecebo anymore..... 😹
Can you guys make a video about infrasound and it's effects. It's really interesting!
Jason: "It looks, kinds like, a psychotic person built it."
Brian: *Laughs psychotically*
First episode I've seen where your project failed :( (from what I can remember)
I subscribed just because of their choice of music.
We'll take it!
Just Brian's justification for setting the paint roller on fire, "The Internet!!"
14:05
"Looks kinda like a psychotic person built it..."
*_psychotic laugh_*
If you're like me and do everything ad nauseum then here's something that'll make this a little easier. Setup a parabolic function on a poster board you measured out like
f(x)=(1/8)(x^2) then measure out some dots to base your graph on, then put a lot of x values into the function and do it on your calculator, mark dots at every on of the values of he function, once this is one you now have a template of a parabola and use that template as a guide to bend some steel wire into that shape; do this multiple times until you have a large amount of these steel wires. Now, a little bit of calculus. The focal point will be at the point along the y axis between the point of the slopes being 1 and -1; this is found by finding the derivative function of the one which ends up being f '(x)= (1/4)(x^2). The value of f '(x) is equal to the slope at that x value so the algebra ends up being:
f '(x)= (1/4)(x^2)
f '(x)=1
1= (1/4)(x^2)
4=x^2
x=2
What this means is that you're going to measure two of the units on your poster board out, then go straight up. Do this to the other side and then do it to the rest of them, the exact midpoint between your two marked lines will be the focal point. Array of your steel wires in a circular formation so it looks like a cone and then cover the inside with some aluminum plates (just go to home depot). Align your speaker's receiving end with the focal point and there you go. A parabolic mic, and replace the plates with reflective mylar and there you have a parabolic mirror capable of burning stuff.
Anyone else want a Grilled Cheese after watching this?
no point in scrapping it if you didnt test where the focal point is. just like how eyes work. everything is blurry until youre in the exact right position.
I think you need to put the microphone a little bit lower, and you could some simple colculations to figure out the right height for the mic.
Nadhir Busheri if im not mistaken it's been a couple years since I study antennas you need to put the point at the foci of the parabola
Yes that's right. But I don't know exactly what is it in this case.