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Mezzo Sound Intensity Probe

with Mezzo Intensity Analyzer Module

User Guide – 2022-02-17

Soft dB Inc.

1040, Belvedere Avenue, Suite 215

Quebec (Quebec) Canada G1S 3G3

Toll free: 1-866-686-0993 (USA and Canada)

E-mail:

Содержание Mezzo Sound Intensity Probe

Страница 1: ...Intensity Probe with Mezzo Intensity Analyzer Module User Guide 2022 02 17 Soft dB Inc 1040 Belvedere Avenue Suite 215 Quebec Quebec Canada G1S 3G3 Toll free 1 866 686 0993 USA and Canada E mail info...

Страница 2: ...ty Probe 6 4 1 2 Calibrating each microphone 7 4 1 3 Selecting the Microphone Spacer 10 4 2 Selecting Data Type 11 4 3 Selecting the record directory 12 5 Performing a quick field check 13 6 Performin...

Страница 3: ...ures real time signal processing Designed to be used with a tablet PC or any other Windows based PC the MEZZO Intensity Probe benefits from the versatility and flexibility provided by computers This a...

Страница 4: ...mum Sampling Rate 48 kHz Signal Conditioning IEPE Communication USB 2 0 Mini B connector Dimensions 370 x 32 x 23 mm Power Supply USB Powered Max 0 35W Included Accessories Component Description Inten...

Страница 5: ...aved at the end of the measurement Display All measured data both live and overall can be displayed during the acquisition Only the overall data can be viewed once the acquisition is completed Miscell...

Страница 6: ...ble the microphone 2 by using the straight preamplifier adapter 5 Insert the microphone 2 in the microphone holder 6 Connect the microphone 2 to the cable labeled 2 7 Select the appropriate microphone...

Страница 7: ...5 3 2 Installing the windscreen It is recommended to use the windscreen on the probe to limit effect of wind noise and also to protect the probe...

Страница 8: ...k on the button from the Setup tab to enter the input setup 4 1 1 Retrieving Microphone Set Information from Mezzo Sound Intensity Probe Click on the Mic Set button Click on the Load Info From Mezzo t...

Страница 9: ...7 4 1 2 Calibrating each microphone Click on the Calibrate Mic A button Enter the calibrator level and frequency Insert the microphone in the calibrator...

Страница 10: ...8 Turn ON the calibrator and click on Run Click on Stop when level is stable...

Страница 11: ...by clicking Check instead of Run This allows to measure the calibration level without changing the sensitivity It is recommended to check the calibration after each measurement campaign to validate th...

Страница 12: ...iated bandwidth relative to the degree of precision Laboratory Expertise Control Probe Intensity Response H F Limit 1 dB 2 dB 3 dB Pressure Residual Intensity Index L F limit 15 dB 12 dB 9 dB 12 5 mm...

Страница 13: ...the available bandwidth is affected by the microphone spacer bandwidth Refer to section 4 1 3 Selecting the Microphone Spacer p 10 for more information The instant rate is the live data rate This rate...

Страница 14: ...ave button once the measurement has ended whereas the automatic mode records the file automatically at the end of the measurement Browse to the desired record directory The recorded files will have a...

Страница 15: ...sitive intensity Locate the sound intensity away from the sound source and check the compass indicator Be sure to locate the sound probe at the same point You can use a tripod or a similar object as a...

Страница 16: ...e scanning path must be uniformly distributed on the measurement surface and it must be followed with the probe at a constant speed For more information on how to select an appropriate path refer to I...

Страница 17: ...ath 11 Back to the main interface click the button on the interface or press the button on the probe to start the measurement 12 As soon as the measurement is started move the probe at constant speed...

Страница 18: ...of sound energy flow through a surface Thus the normal energy flow will equal the full magnitude of the sound intensity vector when the vector is in line with the reference axis It will be positive w...

Страница 19: ...e axis It will be 72 dB when the direction of propagation is 60 with respect to the reference axis and inf dB when it s 90 7 1 2 PI index In practice the sound field is not perfectly perpendicular to...

Страница 20: ...gnificantly from negative to positive during the measurement This is a strong sign of reactive field P I index This index is called F2 or Surface Pressure Intensity indicator in ISO 9614 1 It represen...

Страница 21: ...See section 4 2 Selecting Data Type p 11 The buttons allow to view the basic data which are Sound Intensity Level Sound Pressure Level and PI index When displaying sound intensity levels the red bars...

Страница 22: ...zer to a tab delimited file to import in Excel 9 Viewing Measurement info A measurement file contains all the setup information It s also possible to add a comment to a measurement file to document th...