METHOD, APPARATUS AND COMPUTER PROGRAM FOR DETERMINING RECORDING TIME OF EVENT DATA RECORDER USING ACOUSTIC ANALYSIS

摘要

Provided is a method of determining a recording time of an event data recorder (EDR) includes obtaining, from the EDR of a vehicle, main engine revolutions per minute (RPM) record data of which the recording time is unknown; obtaining, from an acoustic storage apparatus, time domain acoustic data including acoustic information of an event time of the vehicle; calculating frequency domain acoustic data from the time domain acoustic data by using Fourier transformation; calculating RPM estimation data of the vehicle of the event time from the frequency domain acoustic data by using order analysis; and determining whether a time when the EDR records the RPM record data is identical to the event time by comparing the RPM estimation data of the vehicle with the RPM record data.