Acoustic Imaging - Beamforming
Beamforming is a method of mapping noise sources by differentiating sound levels based upon the direction from which they originate. The method is very quick, allowing a full map to be calculated from a single-shot measurement. It also works at high frequencies.
The innovative Brüel & Kjær wheel arrays can be used with PULSE Beamforming to produce acoustically optimal results while maintaining maximum ease of use and handling.
PULSE Beamforming software is centered around an easy-to-understand tree structure where all measurements and calculations are represented. From there, drag-and-drop functionality allows you to plot results in both 2 and 3D. In addition, results can be superimposed on an image of the measured object.
Uses
PULSE Beamforming has the following primary uses:
- Noise-source location
- Mapping of noise radiated from medium- to large-sized objects such as vehicles, components and construction equipment
- Sub-source power contribution analysis
- Remote measurement in environments where it is difficult or dangerous to measure close to the source, for example, in wind-tunnels
- Mapping of higher frequencies than standard noise source location methods
Features
- Mapping of relative sound pressure and sound intensity contribution
- Integrated camera
- Intuitive documentation including animations using source image overlay
- Well suited for large object
- Medium to high frequencies (0.5 to 20 kHz)
- Easy one-shot measuring process
- Quasi-stationary option: RPM averaging
- Transient option: Averaging in Time, RPM, Angle domains and listening to source points
- Expandable with: STSF, Non-stationary STSF
Products
