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S20 Vibroacústica |
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Title:
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MICROPHONE IN SITU CALIBRATION THROUGH COMPARISON METHOD USING MLS TECHNIQUE
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Summary :
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ABSTRACT: THE MICROPHONE CALIBRATION THROUGH COMPARISON METHOD USING MLS TECHNIQUE IS INVESTIGATED. THE OBJECTIVE CONSISTS IN DEVELOPING A PROCEEDING TO PERFORM FREE-FIELD MICROPHONE CALIBRATION WITHOUT THE NEED OF AN ANECHOIC CHAMBER NORMALLY USED IN THIS TYPE OF CALIBRATION. THIS CAN REDUCE THE INVESTMENTS IN LABORATORY FACILITIES OF ABOUT US$ 300.000, MAKING EASIER TO ACCREDITATE SECONDARY LABORATORIES FOR THE BRAZILIAN CALIBRATION NETWORK. A ½" MICROPHONE CALIBRATION WAS PERFORMED WITH THE PROPOSED METHOD AND THE RESULTS HAVE SHOWN A GOOD APPROXIMATION TO THE TRADITIONAL METHOD.
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Author :
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Guedes, Renata 0
Nabuco, Marco A.
Soares, Zemar M. Defilippo
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Paper View :
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