Performers: EveryoneAssistant: Adrian CullenWriter: Julia JudakenEditor: Ava RichardsonResearcher: Alex Agranov and Sam Wllace
Hello, and welcome back to Season 6 of physics, Covid Edition; the science show where we are all separately at home
1. Introduction2.What is Sound?3.What is Music?4.Conclusion
(Sam explains)Ive always been passionate about music...
So because of that, today we will be going over waves, and the Physics of Music
-Sound travels through a medium, this could be a solid, liquid, or gas.-Since sound is made up of waves, the physics of waves apply to sound.-Sound are longitudinal waves, meaning that they oscillate in the same direction as they travel.
No, Not that type of Wave, A Sound Wave!
Sound is caused by vibrations, and those vibrations become a wave that travels through a medium, whether its a solid, liquid, or gas.
Sound waves are longitudinal, meaning they oscillate in the direction they are traveling. The speed and length of the wave determine its pitch and frequency; the longer the wavelength, the lower the pitch. A waves height is known as its amplitude, which determines how loud a sound it will be. Sound waves also consist of pressure; waves consist of higher compression areas (compressions) and lower pressure areas, (refractions).
The way that humans hear and process different sounds is obviously by using the ear, but the part of the ear on the outside is the least important when it comes to hearing.
Our inner eardrums receive sounds and vibrate as well. These vibrations are converted to electrical signals that are interpreted by the brain into the noises we hear around us.
But that sure was a lot of trivia. I’m here to give you a more practical explanation of the waves that make up sound
Sam, thank you for that overview on sound.
-Stringed, wind, and brass instruments use a special type of wave called a standing wave-A standing wave is a wave whose amplitude may change, but the wave does not actually travel anywhere-A guitar string is the perfect demonstration of a standing wave because it is fixed on both ends. The vibration reaches a fixed point and then reflects back and causes interference with new vibrations-Eventually it balances out and a standing wave is formed-Standing waves with different frequencies form notes with different pitch