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Sound Intensity Based Sound Power

Traditionally, to measure sound power, the noise source had to be placed in specially constructed rooms such as anechoic or reverberant chambers. Sound intensity, however, can be measured on a source in any sound field allowing sound power to be determined directly.

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Hand Held System 2270-G

Because steady background noise makes no contribution to the sound power determined when measuring intensity over a closed surface, measurements on individual machines or components can be made even when all the others are radiating noise.

The sound intensity gives a measure of direction as well as of magnitude, it is also very useful when locating sources of sound. Therefore, the radiation patterns of complex vibrating machinery can be studied in situ.

System Suggestion

Sound intensity based sound power system overview


Our software, Sound Power Using Sound Intensity Type 7882, enables sound power to be determined, stored and reported according to ISO 9614 Parts 1, 2 and 3, using dedicated templates. The hardware required is the same for all three standards.

To fulfil the requirements of the chosen standard, a dedicated template leads you through all the necessary steps by means of a task list. The task list reflects the similarities between standards, making for an intuitive user interface.


A portable, sound intensity analyzer system comprising the 2-channel sound level meter / analyzer, Sound Intensity Software BZ-7233 and a Sound Intensity Probe Kit Type 3654, is also ideal for conducting intensity measurements. 

Sound power with hand-held sound intensity system

Related Information

  • Sound Intensity - What is Sound Intensity?

    • Related Products

    Type 2270-S

    Sound Intensity System

    Sound intensity system for noise source location, sound power calculations and noise mapping using a two-channel sound level meter. The system includes Type 2270-S, our two-channel sound level meter, and a two-channel sound intensity probe with the required software.

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    TYPE 7882

    Sound Power Using Sound Intensity

    For determining sound power of a product during normal operation in any sound field, by measuring sound intensity to ISO standards.

    See More navigate_next

    BZ-7233

    Sound Intensity App

    Perform sound intensity measurements for noise source location, sound power determination, and noise mapping using a Type 2270 sound level meter.

    See More navigate_next

    TYPE 3654

    Sound Intensity Probe Kit

    Our two-microphone sound intensity probe kit for measuring sound intensity. The probe kit is designed for use with our hand-held Type 2270 for measuring intensity.

    See More navigate_next

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