NOISE MEASUREMENT DEVICE

PROBLEM TO BE SOLVED: To provide a noise measurement device to be calibrated automatically by only replacing a microphone with a sound calibrator. SOLUTION: The noise measurement device for measuring the noise by using the microphone array 1 comprises: the discrimination means 10 for discriminating...

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Bibliographische Detailangaben
Hauptverfasser:	TOMIZAWA HIROTADA, KITAYAMA SHIGERU, KAWAHARA MIZUMASA, NAKAJIMA YASUTAKA, IWAHASHI KIYOKATSU
Format:	Patent
Sprache:	eng
Schlagworte:	MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC ORINFRASONIC WAVES MEASURING PHYSICS TESTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a noise measurement device to be calibrated automatically by only replacing a microphone with a sound calibrator. SOLUTION: The noise measurement device for measuring the noise by using the microphone array 1 comprises: the discrimination means 10 for discriminating the microphones M1, M2..., MN in which the sound signal of constant frequency, and constant sound pressure keeps inputted for more than a prescribed time from among the microphone array 1; and the calibration means 12 for automatically calibrating the microphone M1, M2..., MN discriminated by the discrimination means 10. COPYRIGHT: (C)2007,JPO&INPIT