The real physics and math of 432Hz vs 440Hz and Schumann resonance
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- čas přidán 15. 07. 2024
- Do actual physics and math back up claims regarding 432 Hz tuning? What is the difference of tuning to 432Hz vs 440Hz? What is Verdi tuning, or scientific tuning? What does "resonance" mean? How is 432 Hz related to the Schumann resonance?
Note: In the video I describe Adam Neely as an "academic." Adam is not an academic professor, but he is a person who, in addition to playing music, also usually reads research and scientific papers on music theory. His scientific approach to music is what I meant by "academic," but I couldn't think of another simple word.
**Links mentioned in the video:**
Episode 3, Musical frequencies: • Musical frequencies: t...
My thesis: drive.google.com/file/d/1XXxt...
432 Hz by Adam Neely: • Testing 432 Hz Frequen...
To better understand the physical and mathematical concepts, I recommend watching my educational series:
• Characteristics of sou...
Version en Español de este video: • La verdadera física y ...
0:00 Intro
0:40 432 Hz tunings
1:57 Scientific tuning
3:16 Cymatics
4:20 Reflections and resonance
8:46 Schumann resonances
10:15 Electromagnetic vs mechanical waves
13:15 Tunings with whole numbers
15:57 Verdi
16:27 Tuning guitars to 432 Hz
19:33 Outro
References, images, and animations:
Cymatics figures: roelhollander.eu/en/tuning-fr...
Water cymatics: • Cymatics Slowmo
Sand cymatics: • Amazing Resonance Expe...
432 vs 440: www.cmuse.org/a-440-vs-432-hz...
Square mode shapes: www.researchgate.net/figure/M... (License: creativecommons.org/licenses/...)
Circular mode shapes: www.researchgate.net/figure/T...
Schumann frequencies:
commons.wikimedia.org/wiki/Fi...
Brain wave frequencies: nhahealth.com/brainwaves-the-....
Mechanical resonance of the heart:
www.researchgate.net/publicat...
Sound in a duct: resource.isvr.soton.ac.uk/spcg...
Bell: www.mathdemos.org/mathdemos/tr...
Sun: www.stickpng.com/img/nature/s...
Electromagnetic spectrum: commons.wikimedia.org/wiki/Fi...
Longitudinal wave: hyperphysics.phy-astr.gsu.edu/...
Guitar: www.pngall.com/acoustic-guitar...
This was genuinely awesome knowledge. Your thesis looks so interesting too, but probably beyond me! Thanks from a grateful (and increasingly physics-curious) singer 😊 😊
You're welcome!! I think more musicians should learn at least a little bit of physics of sound to better understand their craft, which is why I started this whole channel to begin with and why quite approachable with the amount of maths I include. So I appreciate that you're curious about it 😁
Thank you for that. Super valuable information! Great video. I'm surprised it has so little views.
Hi Mario, i really like your video very much, i have a band and we agreed to compose and record in 432 many years ago but only to experiment a different taste. You put absolute clarity about this matter.
I like the video. The formulas came from describing reality not from knowing why it happens. I am very interested in the 432 vs 440 debate recently. Also I found it interesting that we encode audio at 44.1khz rather than 43.2khz when Nyquist says anything above 20k is fine. I'm still doing more research. I am not a hippy but find this topic very interesting. Thank you for your video. I am also done watching at around 8-9 minutes I know physics very well. Thanks for the lesson.
Hello! Thank you for your comment.
A reason to put sampling rates a bit further away from 40kHz is the use of anti-aliasing filters. These are low-pass filters used to remove anything above 20kHz, because otherwise if there ARE some frequencies above 20kHz, they can still alias back into the audible spectrum if you're sampling something at 40, 43.2, 44, 48 kHz, or whatever. So you filter first, then sample, and then your audio should be good.
However, filters are pretty much never a hard cut. Meaning if you have a low-pass filter with a cut-off frequency of 20 kHz, it doesn't mean that 19999 Hz goes through unimpeded, and 20001 gets completely removed. Filters have a gradual curve where at some point the attenuation kicks in, and the attenuation is greater as you go up in frequencies (for low-pass). So having a little "buffer-zone" between say, 20 kHz and 22.05 kHz (the Nyquist frequency when sampling at 44.1 kHz) allows some room for the filter's curve, so that you don't cut into the highest end of the audible spectrum but at the same time you still cut away as much as you can from the post-20kHz range.
Great video man- thanks for just putting out the science
The sound waves, however, are an electromagnetic interaction between the particles. The compression and decompression of the medium corresponds to waves of photons coming out of the compressed areas vs the uncompressed ones. So when the sound hits your body, photons are produced by the inelastic collisions in the rhythm of the sound. It is like turning the light on and off 432 times a second, which is what it's really about. It's about hitting the micro structure of your body with an electromagnetic pulse 432 times a second. It is not about the frequency of the electromagnetic wave itself. Conversely, light produces sound waves when it inelastically scatters with a material since some of the energy if given to the medium. The connection between sound and light is easily overlooked but quite obvious when you think about it!
I am an electronic and acoustic engineer with a master's degree, and what you said about sound producing photons and viceversa is quite literally nonsense, not in the realm of physics or science in general. Sound and photons are on vastly different scales of size. A 432 Hz sound wave has a wavelength of 80 cm, almost a full meter. An 80 cm wavelength does not affect elements on a micro scale structure, or produce photons which are in the NANOmeter scale wavelength-wise. When a wavelength is vastly larger than a target object, it just diffracts around the object rather than interacting with it in any meaningful way.
Please formally study actual science before trying to use scientific arguments.
I would consider 432 equal temperament just for reasons of mathematical laziness. GCD and factorisation.
The only ESP I need is an album of the same name by Miles Davis
Finally. Thank you for exposing the 432 nonsense.
That being said… do any Schumann resonance nodes extend high enough so that the cellular structure of the wood in trees might more freely vibrate along those lines? I think if you do the circle of fifths math, you end up at A= 422.8ish. A far cry from 432 anyway. I do wonder if tuning a wooden instrument along those lines would allow it to resonate more freely? Or is that insane? I’m a musician, an avid science fan… but sadly not scientifically inclined lol
Overtones and Harmonics
Root - 36Hz - 1st
1st - 72 = 9 - 2nd
2nd - 108 = 9 - 3nd
3nd - 144 = 9 - 4th
4th - 180 = 9 - 5th
5th - 216 = 9 - 6th
6th - 252 = 9 - 7th
7th - 288 = 9 - 8th
8th - 324 = 9 - 9th
9th - 360 = 9 - 10th
10th - 396 = 9 - 11th
11th - 432 = 9 - 12th
12th - 468 = 9 - 13th
13th - 504 = 9 - 14th
14th - 540 = 9 - 15th
15th - 576 = 9 - 16th
Note: The sum of each frequency is 9 because each harmonic interval is separated by 36Hz
3 + 6 = 9
As if they didnt have loads of studies before they changed it to 440hz.
Silly you say you cant hear the difference between 440 and 432, Obviously, thats not the point, its about the subconcious control, its about intuition control. People can sense if somethings off if they havent been cut iff from thier intuition, which school system and culture does a great job at stomping out.
Thanks for the lecture however I would like to make some points and hear your answer about it.
I do not disagree with anything you say but in relation with the human body the arguments that waves travel differently in different mediums is weak, since the human body is made of the same stuff for everyone and of mostly the same shape, it stands to reason that if we are discussing the benefits of some frequencies related to the human body, that is what we should consider, not other materials. Water is a good material to study in this case being our body made mostly of water.
Same goes for the argument relative to EM waves and sound waves being different, again nothing to say against this but it is a known fact that electricity plays a huge role in our bodies. From our brain, and our thought, to our muscles, all of them operate with electricity and are constantly bated in an electrical current. Our cells, and all living cells for that matter, are also constantly surrounded by a current at high voltage that allows all of the metabolic processes to take place. Therefore when talking about human bodies, there is a point to be made that EM frequencies have an impact as much as mechanical waves do. This is supported by research that has proved that EM fields from communication system actually have a negative impact on health.
There is also research that has been looking into how the Schuman resonance could have played a crucial role in kick starting life, as the push and pull of the resonance might be what provided both energy and shape to allow the inert matter that makes up organic life to take on the complex geometries that we can observe.
I do not say this because I support the 432 Hz theory, but because I found that your arguments tend to look at the problem in a way that is a bit sterile and purely quantitive, and not fully logically sound.
I encourage everyone to look at data but not to forget that data refers only to qauntitive measures, qualitative measures are completely ignored in our current scientific system.
Beauty is a qualitative measure, and it is one that is instinctual for every human, and beauty is a fundamental part in art and in spirtuality.
There is also a mistake made in the argument that whole numbers are prettier and therefore should be prioritized. That is not why they are preffered, the point of number with many decible or irrational numbers is that they are not possible to be perfectly replicated physically, they have to be approximated. Of course even whole numbers cannot be perfecty replicated physically because of the constrains of the physical worls, no measure is ever perfect. Numerology is simply a different way to look at what patterns can be created using numbers and mathematics is also simply a study of patterns, there are many branches of mathematics that are considered perfectly valid and could be considered numerology but are not, the dinstinction between two fields is merely hystorical and I hard press you to find a definition for numerology that will not include proper mathematics as well.
In general, I invite everyone to not look at things in a sterile way and remind you all that our way to look at things and interpret data is simply a product of our current phyloposhy and metaphysics. Creation is a mysterious process that is based on intuition and inspiration and refined by rationality, and our perception of reality is constantly changing and evolving. Staying curious and excited is fundamental to keep evolving these processes, which does not mean to believe in things without reason or not to look at inconsistencies, but keep reminding ourselves that reality is complex beyond understanding, our currently reductionist approach might put planes in the air but it will never explain the deeper mysteries that surround us at every step and from every direction.
I have previously written a long comment but I will just sum it. Things that were "deeper mysteries" in the past, like magnetism and diseases, were able to be studied and understood thanks to, guess what, science. Hard math and physics. And this has given us the best tools to manipulate magnetism (as seen in technology) and to combat diseases.
In the video I have explained with great detail why electromagnetic waves will not have the same effect as mechanical waves even at the same frequencies, and if you cannot understand that, then there is no way we can argue on the same grounds. In the same way, some people fear that phone radiation can cause cancer, however, I understand that what they don't, that radio waves are so long that they don't cause ionization which is what damages cells and DNA. The type of wave, their wavelengths, and the propagation medium in question, always determine the effects.
You are free to believe in all the metaphysical concepts you like, but you cannot argue physics to those of us who have _actually_ studied physics.
@@AwesomeAcousticsEnglish
I wish you had left the long reply, maybe you had addressed my points instead of just playing the card "you are not educated enough to talk to me".
But you are right, I do not have a PHD, so i will let those who have one do the talking for me.
pubmed.ncbi.nlm.nih.gov/29573716/
Here is a study on multiple negative effects of wifi on health.
www.europarl.europa.eu/RegData/etudes/STUD/2021/690012/EPRS_STU(2021)690012_EN.pdf
Here is a review of multiple studies on 5G by the EU
those are regarding life at the cellular level
www.webmd.com/balance/what-are-binaural-beats
www.healthline.com/health/binaural-beats
Here is two article with relative sources about the effect of difference frequencies on the brain (maybe you forgot that sound waves are translated into EMF by your years)
www.biogeometry.ca/electrosmog-the-miracle-of-hemberg
This is the cherry on top. It talks about a town that protested a 5G tower that was built near them, claiming various negative effects.
The issue was resolved with the use of Biogeometry, something that should be considered a pseudoscience, but I guess no one in that town or in the Swiss government had a PHD because they all got fooled. Especially the government, since they approved a nation wade project.
For fun I can also mention the piezoelectric phenomena as a process that directly transform machanical waves into electricity.
Now you can go tell them how their years of research and study is nonsense and present them with your square and round plates argument, I am sure they will be blown away, no need to reply to me.
I will just close my argument saying that the universe is data, it is our phyche that transforms that data into experience and assigns meaning to it. Without our methaphysical existence we would not be able to do that, but if you are not aware of this process, you will hold believes and not even be aware that you do.
Perfect example is your "hard math" and the believe that it rapresents the truth of the universe always. This is a believe developed by the Pythagoreans and proved wrong many times.
Our knwoledge is constantly expanding, your attitude of shielding yourself with titles while ignoring arguments and scientism will only hold us back from future advancements. Just like how our current cosmology that keeps being refuted by new observations but the academic physicists refuse to review their dogmas or to even aknoledge them as such.
Since I am a PHDless fool you do not have to reply to me again, but I hope that at least you will read the papers I linked. Those guys have PHD, or do you only call science what you learned in class 10 years ago?
Have a good day.
"Water is a good material to study in this case being our body made mostly of water." You do not seem to factor into this that none of the water in our body is actually just water. Most of it is locked up in bones or form a solution with many other different molecules. There is not a single drop of water in your body that is not mixed with a number of other molecules too. So that is also not really a valid point.
@@mischieffrk has this been tested or is it your assumption? It is hard to make predictions that is why the scientific method is all about testing and empirical evidence. i don t mean the fact that the water in our body is locked in a solution, but the fact that it would behave so differently to be unusable.
I'm not saying that your point is not valid but i still think that there is a good chance that human bodies will respond in similar ways. Ofc different tissues would respond differently but the plasma in your body doesn t behave mechanically that differently from water. And we can also take that in consideration and for example use an isotopic solution for experiments.
@@pigimiceli Well yes. Having a different density liquid would affect the rate at which sound waves are able to propagate. This has been tested in the ocean where sound waves that traveled through denser seawater actually move faster than in less dense seawater. There's also things like blood pressure, and I'd assume oxygenation would also have some effect .
But again it's important to note this is specifically referring to mechanical waves like sound waves, not EM waves.
Wouldnt 432 make more sense mathematically?
Pythagorean tuning sucks. Irrelevant.
432 Hz doesn't make any more or less sense mathematically than 440 Hz. How much a tuning system "makes sense" depends much more on the choice of temperament (the frequency ratios between notes)
HI, Escuse me, i studied cello for many years. running to 432 mean that all the other notes have a different tuning, that "la - A " note is like the flag, is a war, you bring the white flag, is a sign of peace.
on the minute 9.22
watch on " soundgeometry", this argument is more profound and have many other connection
12.05 all music on this planet is on 440 hz, and that IS a big influence on the planet....not an orchestra,.....
at the end....I play cello and in a normal orchestra I tunes it on 440...if want too play on 432...I turned the A, and from that note the other strings...so the same with the guitar...you take the fist note...then from that you....is that clear?
@@AncaPavel-gd3je if you tune each instrument to the starting-note of A-432 hz, then everyone should be together on A432.