发明名称 |
SOUND SOURCE IDENTIFICATION APPARATUS AND SOUND SOURCE IDENTIFYING PROGRAM |
摘要 |
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 |
申请公布号 |
JP2010266399(A) |
申请公布日期 |
2010.11.25 |
申请号 |
JP20090119918 |
申请日期 |
2009.05.18 |
申请人 |
ONO SOKKI CO LTD;NATIONAL TRAFFIC SAFETY & ENVIRONMENT LABORATORY;ISHIHAMA MASAO |
发明人 |
SARUWATARI KATSUMI;ISHIHAMA MASAO;SAKAMOTO ICHIRO;TANAKA TAKEHARU;HOUZU HIROYUKI;MURAKAMI TAKAYUKI |
分类号 |
G01S3/808;H04R1/40;H04R3/00 |
主分类号 |
G01S3/808 |
代理机构 |
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