METHOD OF SPECIFYING LOCATION OF OCCURRENCE OF ABNORMAL SOUND, NON-TRANSITORY STORAGE MEDIUM, AND IN-VEHICLE DEVICE

There is provided a method of specifying a location of occurrence of an abnormal sound, the method including: storing mapping data in a storage device (83), the mapping data prescribing mapping that receives, as inputs, a sound variable that matches a sound detected in a vehicle and a state variable of a drive-system device of the vehicle synchronized with the sound, and that outputs a location as a main cause of the sound; executing a sound signal acquisition process of acquiring a sound signal output from a microphone (65) that detects a sound; a state variable acquisition process of acquiring the state variable of the drive-system device; and a specifying process of specifying the location of occurrence of the sound corresponding to the sound signal using the sound variable and the state variable as inputs to the mapping. There are also provided a non-transitory storage medium and an in-vehicle device.