| 摘要 |
PURPOSE: A noise analysis device is provided to efficiently analyze and record physical unique signals in which an observation when the signals are generated or abnormal symptoms discontinuously generated are impossible. CONSTITUTION: A noise analysis device(100) comprises acoustic sensors, a data acquisition part(150), a digital signal processing part(130), a CPLD(Complex Programmable Logic Device)(140), a storing unit(120), and an output unit(170). The acoustic sensor collects acoustic signals, thereby outputting analog electric signals. The data acquisition part converts the analog electric signals input by each acoustic sensor into digital signals, thereby outputting. The digital signal processing part stores the digital signals input by the data acquisition part and outputs an analysis result by performing an analysis with respect to the digital signals input by the data acquisition part. The CPLD relays signal acquisition processes and adjustments of each channel of a sensor unit(110) while receiving and transmitting the signals with the digital signal processing part. The storing unit stores the digital signals output from the digital signal processing unit and the analysis result.
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