Assertion: horn loudspeaker | /r/CapableOf | transform small diameter
Facets:
value: to a large diameter
type: OTHER
value: at the mouth of the horn
type: LOCATION
value: at the driver cone surface
type: LOCATION
Source sentences:
text: Horn loudspeakers use a shaped waveguide in front of or behind the driver to increase the directivity of the loudspeaker and to transform a small diameter, high pressure condition at the driver cone surface to a large diameter, low pressure condition at the mouth of the horn.