- Patent Title: Device for estimating speed of moving sound source, speed monitoring system, method for estimating speed of moving sound source, and storage medium in which program for estimating speed of moving sound source is stored
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Application No.: US16329803Application Date: 2017-09-05
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Publication No.: US11360201B2Publication Date: 2022-06-14
- Inventor: Tatsuya Komatsu , Yuzo Senda
- Applicant: NEC Corporation
- Applicant Address: JP Tokyo
- Assignee: NEC Corporation
- Current Assignee: NEC Corporation
- Current Assignee Address: JP Tokyo
- Agency: Sughrue Mion, PLLC
- Priority: JPJP2016-176167 20160909
- International Application: PCT/JP2017/031897 WO 20170905
- International Announcement: WO2018/047805 WO 20180315
- Main IPC: G01S11/00
- IPC: G01S11/00 ; G01S11/14 ; G08G1/01 ; G08G1/052
Abstract:
A sound signal corresponding to a sound emitted by a sound source is inputted to a frequency analysis unit (101), and the frequency analysis unit (101) performs frequency analysis of the sound signal and generates a spectrogram. Spectrogram template information indicating spectrograms corresponding to each of at least a plurality of predetermined movement speeds, the spectrograms being for cases in which the sound source is moved, is stored in a model storage unit (102). An estimation unit (103) estimates the movement speed of the sound source on the basis of the spectrogram generated by the frequency analysis unit (101) and the plurality of spectrograms indicated by the spectrogram template information stored in the model storage unit (102).
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