Assertion: accordion's sound | /r/CreatedBy | reed
Facets:
value: in an acoustic accordion
type: MANNER
Source sentences:
text: In an acoustic accordion, sounds are produced by reeds that vibrate with airflow generated by the movement of the bellows; the resistance of the bellows constantly varies, depending on how many reeds are selected and how many notes are played at once.
text: The second reason is the air pressure (which governs the volume of sound produced by the reeds), and is expressed in terms of force/area 2 , as in pounds per square inch.
text: So you'll see that the size of the bellows' cross-sectional area will affect the air pressure - and thus the volume of sound produced by the reeds.