A vehicle direction identification device includes: a frequency analysis unit which analyzes phase of the surrounding sound in each analysis section specified by predetermined frequency regions and time intervals; a sound source direction identification unit which identifies a sound source direction indicating a direction of a sound included in the vehicle sound for each analysis section; a reflection information storage unit which stores (i) state information relating to rates of occurrence each of which are a count of the analysis sections of a corresponding one of the sound source directions, and (ii) reflection patterns each of which includes an estimated vehicle direction which is a vehicle direction associated with a set of the state information; and a vehicle direction identification unit which identifies a vehicle direction by checking the rates of occurrence obtained from an identification result by the sound source direction identification unit against one of the reflection patterns.
Vehicle direction identification device, vehicle direction identification method and program therefor
2015-09-29
Patent
Elektronische Ressource
Englisch
IPC: | H04B TRANSMISSION , Übertragung / G01S RADIO DIRECTION-FINDING , Funkpeilung / G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS / H04R LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS , Lautsprecher, Mikrofone, Schallplatten-Tonabnehmer oder ähnliche akustische, elektromechanische Wandler |
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