Invention Grant
- Patent Title: Method of detecting resonant frequency, method of selecting resonance frequency, and device for detecting resonant frequency sensor
- Patent Title (中): 谐振频率检测方法，共振频率选择方法，共振频率传感器检测装置
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Application No.: US10537984Application Date: 2003-12-09
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Publication No.: US07249511B2Publication Date: 2007-07-31
- Inventor: Daisuke Higashihara
- Applicant: Daisuke Higashihara
- Applicant Address: JP Hyogo
- Assignee: TOA Corporation
- Current Assignee: TOA Corporation
- Current Assignee Address: JP Hyogo
- Agency: Marshall, Gerstein & Borun LLP
- Priority: JP2002-357124 20021209; JP2003-021558 20030130
- International Application: PCT/JP03/15703 WO 20031209
- International Announcement: WO2004/054316 WO 20040624
- Main IPC: G01H7/00
- IPC: G01H7/00 ; H04R29/00
Abstract:
A device for detecting a resonant frequency comprises a sound source, a switch, a mixer, and a sound meter. The switch and mixer are capable of switching between a first state in which the switch and mixer output a measurement signal and a second state in which the switch and mixer output a synthesized signal containing the measurement signal and the signal output from a microphone. The device detects the resonant frequency based on comparison between the first amplitude frequency characteristic measured in the first state and the second amplitude frequency characteristic measured in the second state.
Public/Granted literature
- US20060137454A1 Resonance frequency sensing method, resonance frequncy selecting method, and resonance frequency sensor Public/Granted day:2006-06-29
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