SOUND SOURCE IDENTIFICATION APPARATUS AND SOUND SOURCE IDENTIFYING PROGRAM

• Main Authors: SARUWATARI KATSUMI, TANAKA TAKEHARU, ISHIHAMA MASAO, HOUZU HIROYUKI, SAKAMOTO ICHIRO, MURAKAMI TAKAYUKI
• Format: Patent
• Language: English
• Published: 25.11.2010
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DEAF-AID SETS; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS; MEASURING; PHYSICS; PUBLIC ADDRESS SYSTEMS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING

PROBLEM TO BE SOLVED: To provide a sound source identification apparatus for identifying a vehicle or a sound source generating a sound higher than a specified one, which can exactly identify sounds in a low sound area and those in a high sound area. SOLUTION: The sound source identification apparatus includes: a first sound source calculation part that calculates a sound source position by beam forming calculation based on a first sound signal indicating a sound component in a sound area subjected to high-frequency extraction extracted from an original sound signal obtained by receiving a sound emitted from a vehicle running on a vehicle traffic road; a second sound source calculation part that calculates a sound source position by acoustic intensity calculation based on a second sound signal indicating a sound component in a sound area subjected to low-frequency extraction extracted from an original sound signal; and a sound source identification part that identifies a sound source based on the sound source position calculated by the first sound source calculation part and the sound source position calculated by the second sound source calculation part. COPYRIGHT: (C)2011,JPO&INPIT