Beamforming - Planar and Spherical
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 arrays can be used with PULSE Beamforming to produce acoustically optimal results while maintaining maximum ease of use and handling. Both planar and spherical arrays are available.
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
