Applied Science

How a horn amplifies sound (hint: Impedance matching) (2015x1)

Data de estreia: Jan 12, 2015

A horn-shaped speaker is louder than an equivalent speaker without the horn. This fact doesn't violate physics because the horn is acting as a matching device between the speaker and the air around it. Photo Credit for phonograph: Norman Bruderhofer, Collection of John Lampert-Hopkins