Assertion: locomotive's design | /r/Desires | larger flat diaphragm
Facets:
value: to reach the required sound level
type: PURPOSE
Source sentences:
text: Some cars, and many motor scooters or motorcycles, now use a cheaper and smaller alternative design, which, despite retaining the name "horn," abandons the actual horn ducting and instead relies on a larger flat diaphragm to reach the required sound level.