Patent ID: 11897478
Assignee: HERE GLOBAL B.V.
Field: Transport (Mechanical engineering)
Classification: CPC B  Y | IPC B

Claim 12:
13. A method comprising:
receiving at least one first audio signal from a first audio sensor of a vehicle;
extracting acoustical features comprising frequency and amplitude from the at least one first audio signal;
receiving at least one second audio signal from a second audio sensor of the vehicle;
extracting acoustical features comprising frequency and amplitude from the at least one second audio signal;
processing the frequency and amplitude from the at least one first audio signal and the frequency and amplitude from the at least one second audio signal as inputs to an algorithm to generate an output from the algorithm;
determining, from the output of the algorithm, a precipitation condition and a confidence measure of the precipitation condition, wherein the confidence measure of the precipitation condition is determined based, at least in part, on a combination of the at least one first audio signal and the at least one second audio signal;
causing validation of the output of the algorithm by comparison with at least one additional signal in response to the confidence measure failing to satisfy a predetermined level; and
providing for a change in an operational state of the vehicle in response to the determination of the precipitation condition.