Patent ID: 11868199
Assignee: HYUNDAI MOTOR COMPANY
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 7:
8. A system for detecting an anomaly, the system comprising:
a memory for storing anomaly data and normal data; and
a processor connected to the memory,
wherein the processor is configured to:
set a minimum true positive rate (TPR) and a differentiation slope based on a user input;
create a receiver operating characteristic (ROC) curve using the anomaly data and the normal data;
estimate a true negative rate (TNR) from the ROC curve based on the minimum TPR and the differentiation slope;
estimate and set a threshold based on the estimated TNR;
select one of at least one speech recognition engine based on the estimated threshold in response to receiving a speech signal from the outside using a microphone; and
perform speech recognition on the speech signal using the selected speech recognition engine,

wherein the threshold is automatically reset when a processing region of the at least one speech recognition engine is changed or a new speech recognition engine is introduced.