Danish manufacturer Brüel & Kjӕr, a global leader in precision measurement technology, offers advanced acoustic arrays through Durham Instruments, providing industries with sophisticated noise mapping capabilities. These systems range from compact two-microphone units to expansive arrays with hundreds of microphones, enabling detailed analysis of various noise sources.
Durham Instruments supports clients with a dedicated Customized Products Department, ensuring tailored solutions that integrate acoustic arrays, specialized software, positioning systems, and robotic components. Among the key applications are hearing aid leak detection—using a reference microphone paired with a robotic-controlled unit—and quality control in electrical transformer manufacturing.
Selecting the appropriate acoustic array depends on several factors, including the testing environment (indoor, outdoor, underwater, or confined spaces like vehicle cabins), the required frequency range, noise map resolution, distance to the sound source, and whether the source is stationary or moving.
Brüel & Kjӕr’s product lineup includes spherical arrays for omnidirectional noise mapping in cables or indoor environments, leveraging SHARP (spherical harmonics-based) algorithms for comprehensive 3D sound field analysis. Planar wheel arrays, adaptable for both indoor and outdoor use, come in various diameters and microphone configurations, working seamlessly with PULSE beamforming software. Foldable arrays, designed for outdoor applications, offer portability and can be adjusted into a funnel shape to reduce rear noise interference by up to 10 decibels. Handheld arrays provide compact solutions for near-field measurements in tight spaces, while grid arrays, consisting of fixed microphone or hydrophone lattices, excel in precise stationary sound field analysis.
With its innovative acoustic array technology, Brüel & Kjӕr continues to address complex noise measurement challenges, delivering high-performance solutions tailored to industrial needs worldwide.
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