Wind Instrument Frequencies (open and closed pipe instruments)

The equations for the harmonic frequencies of open and closed pipe wind instruments are derived. An animation of a longitudinal standing wave pattern in a closed pipe is shown. Displacement and pressure nodes and antinodes are shown. Want Lecture Notes? www.flippingphysics.com/wind-... This is an AP Physics 1 Topic.
0:00 Intro
0:10 Harmonic frequencies of stringed instruments
0:52 Open pipe and closed pipe wind instruments
1:46 Open pipe standing wave patterns
2:47 Open pipe natural frequencies
3:50 Closed pipe - first harmonic
4:49 Closed pipe - second harmonic
5:43 Closed pipe - third harmonic
6:42 Closed pipe natural frequencies
7:21 Displacement and pressure nodes and antinodes
9:07 Closed pipe standing wave pattern animation
10:24 The adjusted length of wind instruments
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Пікірлер: 37

  • @gorgolyt
    @gorgolyt4 жыл бұрын

    9:10 is awesome. I've looked all over KZread and the internet for a good explanation of how wind instruments work. This is the first good explanation I've found! Awesome work dude.

  • @zalxder
    @zalxder3 жыл бұрын

    one of the best educational KZread videos I've seen in the last decade

  • @FlippingPhysics

    @FlippingPhysics

    3 жыл бұрын

    High praise. Thank you!

  • @chrismcgowan5180
    @chrismcgowan51804 жыл бұрын

    How do you never look a day older, even after all these years!, Just wanted to say thanks for helping me with undergraduate physics and applied physics. I'm now in med school but watch all your videos regardless, thanks again!

  • @FlippingPhysics

    @FlippingPhysics

    4 жыл бұрын

    This is awesome! (Best of luck in med school. Remember to sleep.)

  • @carolg981
    @carolg981 Жыл бұрын

    I am a physics teacher and your videos are great...THANKS..your way of explaining matches perfectly with mine, so great..thanks for your work

  • @FlippingPhysics

    @FlippingPhysics

    Жыл бұрын

    You are very welcome. Glad to help your students learn!

  • @KBAZ100
    @KBAZ1004 жыл бұрын

    Perfect timing Mr. P! I am teaching this right now to my I.B. physics class and your videos are a great tool and inspiration! Thank you for all you do.

  • @FlippingPhysics

    @FlippingPhysics

    4 жыл бұрын

    You are welcome! I hope you're I.B. class enjoys learning about the physics of musical instruments.

  • @IronLotus15
    @IronLotus154 жыл бұрын

    Thank you for talking about the differences between displacement and pressure nodes/anti-nodes! That was a detail that was glossed over in my AP class...We also never fully visualized the waves as being longitudinal lol

  • @FlippingPhysics

    @FlippingPhysics

    4 жыл бұрын

    Glad to help. Visualizing longitudinal waves is difficult, however, very necessary.

  • @saketupadhyay
    @saketupadhyay9 ай бұрын

    Man, you are amazing❤🎉

  • @AshishDha
    @AshishDha2 жыл бұрын

    thanks a lot! these are really good :)

  • @FlippingPhysics

    @FlippingPhysics

    2 жыл бұрын

    You are welcome!

  • @alejandrocasariego6801
    @alejandrocasariego68018 ай бұрын

    Dude, you are amazing

  • @lorenzobenitezbarboza
    @lorenzobenitezbarboza4 жыл бұрын

    thank youuu

  • @arpit9134
    @arpit91342 жыл бұрын

    you are a boon for the physics fraternity

  • @alvik8399
    @alvik8399 Жыл бұрын

    I forgot to ask if what happens to the air molecules being compressed and released, if they can be visualised in any way or diagram? The behaviour inside the tube is easier to picture, but what happens in that resonator towards the closed end to the left of the blow hole isn't easy to picture. If there's a votex or a suction system of any sort taking place. Hope I managed to explain myself to be understood. Thanks for your time and interest. Alex G.

  • @carolg981
    @carolg981 Жыл бұрын

    Thanks

  • @FlippingPhysics

    @FlippingPhysics

    Жыл бұрын

    Thanks for the donation!

  • @WaffleLover-my1hi
    @WaffleLover-my1hi4 жыл бұрын

    nice vid

  • @FlippingPhysics

    @FlippingPhysics

    4 жыл бұрын

    thanks

  • @alvik8399
    @alvik8399 Жыл бұрын

    Hello, Thanks for your explanation. May be you could shed some light on what happens on a side flute(traverse flute) which is some kind of mix between open hole on both sides but at the same time has to the left of the embouchure blow hole a cavity which ends in a closed end, and I believe this volume of air acts in a way as a compressor ,resonator. Would you know how this system works or a place where I could dig deeper into the matter. Thanks in advance. Alex G

  • @jkgan4952
    @jkgan49523 жыл бұрын

    lol my teacher went over standing waves in pipes in four minutes. What's the point of school when I can learn online from people like you

  • @aamirashraf7085
    @aamirashraf7085 Жыл бұрын

    What is the mean Pressure inside the organ pipe in terms of atmospheric pressure?

  • @dot9826
    @dot98264 жыл бұрын

    why does air particle not oscillate at nodes?

  • @FlippingPhysics

    @FlippingPhysics

    4 жыл бұрын

    Please watch these two videos about standing waves. I think it will help your understanding. www.flippingphysics.com/standing-waves.html and www.flippingphysics.com/standing-wave-longitudinal.html

  • @matthewbrennan3127
    @matthewbrennan31274 жыл бұрын

    Can you do an explanation on resonance?

  • @FlippingPhysics

    @FlippingPhysics

    4 жыл бұрын

    I already did. www.flippingphysics.com/resonance.html

  • @christosnettos9493
    @christosnettos94934 жыл бұрын

    Does anyone know which program he uses to create these animated videos?

  • @FlippingPhysics

    @FlippingPhysics

    4 жыл бұрын

    The original video is of an object rotating on a turntable. I then motion tracked the object in Motion and isolated just the horizontal motion and applied that to a single dot to get a dot moving in simple harmonic motion. Then I imported that in to Final Cut Pro and made many, many, many duplicates of it in various configurations. So many duplicates it actually crashed my computer and I had to export groups of dots in a series of videos and then reimport those back in to Final Cut Pro to make it work. Hope that helps!

  • @neyvickzallescardenas5327
    @neyvickzallescardenas53274 жыл бұрын

    I never had this kind of knowlege in my country I freaking love this explanations!!! I was wondering... How do you know if in an open end the wave isnt out of fase? I mean is it always going to be an antinode? Why is that... Or maybe it could be a little bit to the right or left.... Making it not perfect... I dont know if what I just write its ok sorry for my mistakes I dont have good english XD thanks! For the videos!!

  • @FlippingPhysics

    @FlippingPhysics

    4 жыл бұрын

    You have to be really careful here. Do you mean a displacement or pressure antinode? I actually answer all of these questions in the video. I would suggest watching the video starting at 7:21. Thanks for the compliments!

  • @neyvickzallescardenas5327

    @neyvickzallescardenas5327

    4 жыл бұрын

    @@FlippingPhysics ooooo that the 0.6 i get it now thanks!!

  • @FlippingPhysics

    @FlippingPhysics

    4 жыл бұрын

    Glad to help!

  • @Chrisamic
    @Chrisamic9 ай бұрын

    but wait, this ignores the inversion factor of the pipe. The diameter of the pipe affects it's resonant frequency, not just the length. What's the the real formula? This seems like an over simplification of what is really happening, which is inversion of the waveform before every antinode...

  • @rnb4935
    @rnb49353 жыл бұрын

    Great video, Please just get yourself a lavalier mic