How Does A Melodica Work? The Science Behind the Sound (鍵盤ハーモニカの仕組み 音の背後にある科学)

Chapters:
0:00 Introduction
0:13 What's inside a melodica
1:31 Understanding how reeds work
3:29 What determines reed pitch
4:06 The science of tuning reeds
4:44 Video of vibrating reeds
5:03 Introduction to why reeds vibrate
5:33 The Bernoulli effect
6:50 How the Bernoulli effect applies to melodica reeds
8:28 The science behind "reed gapping"
9:37 The sound made by the reed alone
9:58 How air sirens produce sound
11:11 How melodica reeds produce sound
11:45 Melodica acoustics
12:00 Goodbye, and a musical performance ("Japanese style" two-handed playing)

Many thanks to the following "Melodicaholics":
Akeo "Pianonymous" Minamikawa taught me that there is no such thing as 'too much melodica.' She wrote a comprehensive book on the subject, which is highly recommended reading! I helped her develop content and graphics to explain the technical aspects, and found it very challenging to communicate these concepts with static images. That was the inspiration for this video.
Daren Banarsë created, among other things, the indispensible "Melodica World" facebook and world-wide-web forums. I am reliant on this incredible global community of fellow musicians and enthusiasts. He's also very good at making melodica videos, and I'm grateful for his advice, ideas, and support.
Oscar "Mister Melodica" Verdugo. His amazing project, the International Melodica Museum Inc., provided the melodica "group photo" background image in the opening and closing scenes.
Also:
Tony Freixas, just because he was curious about melodica physics, found some excellent research papers that formed the foundation for some key concepts presented here. Thanks Tony!
Jon Glancy helped me with many crucial aspects of audio and video, and gently tugged on my brain's leash when necessary.
Lisa Gimbel's guidance helped me make text readable and understandable to a wider audience.
Shashank Kumar and his incredible team at House Sparrow Films created animated sequences that blew my mind with their quality, clarity, and creativity.

All music composed and performed by Dr. Melodica, (except drums on the last song, which are played by Mason Rosenfeld).

David Brancazio (a.k.a. Doctor Melodica) is a mechanical engineer and a musician with a passion for both.