I feel like this is more of a clarinet than a flute, since the two “flaps” reminds me of how reeds work. Great video, helped me see something I enjoy through a new perspective!
Great. But it would have been really solid if you had also used a frequency analyser to show the frequency and compare to calculation (i’ll do that for mine). Question: should you include end effect to get the acoustic length rather than the physical length? If so, the result would be more accurate.
Clarinets act more like closed end cylinders whereas flutes act like open ended ones. Difference is in the mouthpieces. I agree with your daughter as well. ^-^
Yes a recorder is like a clarinet and is considered a closed pipe because the end is closed by the mouth. Technically what I made in the video is a clarinet not a flute.
Thank you for making and sharing this video. I love it, and will have my class work on it tomorrow. The explanation is very clear (what temperature are you using?), but when I compare the frequencies that are played I don't hear agreement with the computed values. For the short straw played at time 1:26 it seems to sound around 529 Hz instead of the 1416 Hz by the solution of the equation (at time 4:45). For the long straw played at 1:30 it seems to sound around 346 Hz, not the 700 Hz by the equation (at time 5:27). I think I have the sound in the right octave. Audacity can be used to record the sound and then plot the spectrum -- if you hover near a peak it tells you what the frequency is, and you can check the frequencies of the even multiples of the fundamental. I haven't been able to make the math fit with my playing of different length straws. Maybe I'm playing something other than the fundamental F1.
Thanks for the temperature. I love the video. My frequency estimates were done by ear. The students had fun. We went outside afterwards and made some music.@@SteveGriffithsvideo
Hi Sir, just a quick question, but for the frequency which you calculated (1416.6Hz) for the straw clarinet, would that be the "fundamental frequency" at that length? Thank you so much in advance.
Hi Bob, I think so but I am not very strong on harmonics. This video was pitched at a year 9 level. Unfortunately I don’t teach physics higher than grade 9.
✨Sir, if we increase the diameter of pipe what will be the effect on frequency 🙏🏼✨is there any formula to calculate the length of note from blowing hole, what is the relationship between frequency of note and volume of pipe🙏🏼✨
@@SteveGriffithsvideo ✨so if i make a flute of same length but different diameters with only blowing hole, and blow the blowing hole same note will be produced 🙏🏼✨
Yes. It is a property of the length of pipe, not the radius. Changing the radius is likely to change other properties such as volume. Thanks for the question.
So the freq spectrum of my straw with 19.6 cm length and sound speed at 24 C of 345 m/s gives frequency of 157 Hz as the min freq of max amplitude. Calculation gives 440 Hz, so the results are way off! Why? …other peaks are at 328 Hz, 497 Hz, 666 Hz. I dont think I am exciting higher modes as this is the min freq I am able to play with the straw.
It takes a little while to get it to work the first time you try. Make sure you have the end that goes on your mouth cut to a point. I bite the point down a bit so the tips are closer together. Gently squeeze it together in your lips and blow hard. Keep trying.
