DIFF Subgroup
H05B 47/12 by detecting audible sound
Introduced: January 2020
Full Title
Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant > Controlling the light source > in response to determined parameters > by determining the presence or movement of objects or living beings > by detecting audible sound
No child classifications to compare. This is a leaf node in both IPC and CPC.