Sound Intensity Measurement

Sound Intensity Application Overview

Dewesoft Sound Intensity module offers a complete measurement solution, enabling the customer to use it for precise noise source location or sound power calculation, without the need for any special environment such as reverberation room or anechoic chamber. 

Sound power measurement is a universally recognized method especially established to compare devices for their acoustic properties. Utilizing our fully-fledged and versatile solution, sound power measurements can be conducted regardless of the object of interest's shape or size with only a few requirements for the space or location of measurement.

Sound Intensity Application Overview

This way sound power can be obtained in any type of sound field. Moreover, this method enables measurement of devices that require specific and complex mounting to operate, making it impossible to determine their sound power through other methods. In situ measurements have never been simpler, or as powerful. Perfect for fast troubleshooting and conformance to factory measurements and it also excels in complex devices with residual noise where key interest is a sound power of a specific machine.

When it comes to noise source location, no other solution is as simple and intuitive to use as Dewesoft sound intensity. Depending on the direction of sound waves travel (from microphone A to B or vice versa), our plugin will display different values (positive or negative) as noise source moves along the axis of the probe. When the probe is perpendicular to the noise source (located directly above it), the visual control inside Dewesoft X3 DAQ software will toggle between positive and negative value. As this process is done for the horizontal and vertical alignment of the probe axis, the sound.

ISO 9614-1 - Measurement At Discrete Points

When more time is available or more detailed approach is necessary, segmentation method (ISO 9614-1) is the best possible option. Once an object is measured from all (usually 5) sides, sound power can be calculated. However, with our solution, it is possible to do a more detailed analysis of the result. The software maintains the levels for each segment and further sub-segmentation is possible to extract additional information about the device under test.

On top of all this, sound intensity probe buttons are supported for moving between segments and triggering start/stop of the measurement.

Accompanied by a simple visual user interface with an overlay on the top of the object image, our solution gives an intuitive view of the results and key quality parameters of measurement.

One of a Kind - Easy To Expand Solution 

Two additional analog inputs on the SIRIUS mini data acquisition system allows you to plug-in additional sensors - e.g. accelerometers or any kind of voltage sensors. This allows you to simultaneously measure and display other parameters and syncronise them perfectly with your sound signals.

In conjunction with GRAS 12AR power module, we offer a plug and play solution for sound intensoty probes that require 200V polarisation voltage, making it possible to use existing equipment as well.

Carefully Calibrated

Modern measurement techniques and solutions all require a way to ensure the quality and compliance of the measurement chain. Dewesoft has recently put special efforts in this area.

Every Dewesoft SIRIUS DAQ device can thus be calibrated according to IEC 61672-3:2013.

Our Sound intensity solution also includes procedures for single frequency pressure accuracy and also phase calibration of the whole measurement chain using GRAS 51AC Sound Intensity Probe calibrator.

In addition, we also offer a complete service of filter calibration according to IEC 61260: 2014 standard.