UCSB Science Line
Sponge Spicules Nerve Cells Galaxy Abalone Shell Nickel Succinate X-ray Lens Lupine
UCSB Science Line
How it Works
Ask a Question
Search Topics
Our Scientists
Science Links
Contact Information
What type of sound waves does an accordion produce?
Question Date: 2012-05-10
Answer 1:

Sound waves are mechanical waves, that is oscillations of pressure transmitted through a solid, liquid, or gas; sound waves are created by a vibration of an object, which causes vibrations in the air. The vibrating air causes your eardrums to vibrate and you hear a sound. An accordion causes vibrations by pushing air through a valve and over a reed. Pressing a key selects and opens a valve and pumping the accordion blows air over the reed, causing it to vibrate.

The size and mass of the reed and the size of the resonant cavity surrounding the reed control the frequency of the waves. Difference frequencies are different pitches or notes. By pressing a key on the accordion, one can play a note or a chord. The accordion range is from F3 (with frequency = 174.614 Hz) to A7 (with frequency = 3520.00 Hz). The speed of pumping controls the amplitude of the wave. The higher the amplitude, the louder the sound.


Here to return to the search form.

University of California, Santa Barbara Materials Research Laboratory National Science Foundation
This program is co-sponsored by the National Science Foundation and UCSB School-University Partnerships
Copyright © 2017 The Regents of the University of California,
All Rights Reserved.
UCSB Terms of Use