This application discloses a
noise identification method, medium, equipment, and product for thermal power plants. The thermal power
plant includes multiple pieces of equipment. The method involves acquiring raw sound signals and historical acoustic
feature data; digitizing each raw sound
signal to obtain multiple acoustic features; determining a dynamic threshold range based on the historical acoustic
feature data; identifying anomalous features among the multiple acoustic features based on the dynamic threshold range; determining a target
label for each anomalous
feature based on a predefined set of
noise labels and the associated attributes corresponding to each anomalous feature; constructing an association
graph based on the index information and target labels corresponding to the multiple anomalous features; and performing
posterior probability analysis on the nodes in the association graph to obtain the
noise source region of the thermal power
plant. This application embodiment achieves
anomaly detection through multi-dimensional features, dynamic thresholds, and
label matching, and constructs an association graph for probability analysis, enabling precise location of noise sources.