Assertion: speaker's sound | /r/CapableOf | double acoustical power
Facets:
value: at the receiver
type: OTHER
Source sentences:
text: When measuring in 'half space', the boundary of the ground plane cuts the available space that the sound radiates into in half and doubles the acoustical power at the receiver, for a corresponding 3 dB increase in measured sensitivity, so it is important to know the test conditions.