PAK Sound Source Localization – Identify Noise Issues Fast

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Our intensity robot saves me a lot of time during setup and still allows me to take highly accurate, automated measurements. That's efficiency!

Initial

In the acoustic development of modern vehicles, machines, and buildings, the localized assessment of sound emissions plays a central role. However, manual intensity measurements are time-consuming, error-prone and, depending on the application, difficult to reproduce – especially with complex geometries and highly dynamic NVH requirements. The increasing variety of materials, surfaces and component designs calls for a flexible and scalable solution.

Relevance

The system is successfully used in various industries and application areas, including:

Automotive and aerospace industry
e.g. measurement of sound radiation from car body parts (doors, hoods, aircraft fuselages), evaluation of insulation materials and composite materials for quieter vehicles/aircraft
Machinery and plant engineering
e.g. investigation of machine housings or industrial plant components, identification of noise sources to reduce operating noise
Building acoustics and noise control technology
e.g. evaluation of the sound insulation of doors, windows or wall structures, acoustic optimization of sound barriers or rail/road surfaces
Acoustic research and development
e.g. measurement of sound absorption/insulation of new materials (e.g. foams, composite materials), simulation validation
Quality control and assurance:
e.g. automated testing of acoustic properties after painting or material changes

Challenge

How can sound sources be identified quickly, reliably, and precisely—even with complex geometries?
How can the effort required for measurement technology and test execution be reduced?
How can reproducibility and standardization be ensured across multiple test cycles?

Solution

Our answer: a fully automated, robot-based sound intensity measurement system combined with 3D scanning and software-supported path planning. At its heart is a precisely guided intensity probe that travels along defined measurement paths with sub-millimeter repeatability. Seamless integration into existing NVH test benches is possible.

Process

Preparation: 3D scan of the component geometry, calibration of the robot and probe
Path planning: Automatic calculation of the optimal measurement path by the PAK software
Analyse: Software-based evaluation of sound intensity distribution
Derivation: Identification of acoustic weak points and evaluation of insulation materials

Results

Precise localization of noise
Consistent data quality in repeat tests
Significant time savings in test preparation and execution
Night operation possible thanks to complete automation

Customer

✅ No manual path programming – less testing effort, higher measurement quality

✅ Objective NVH database for development, validation, and quality assurance

✅ Scalability for different components, materials, and areas of application

✅ Process reliability through digital documentation and repeatability

⭐️ Key Features

Automated path planning based on 3D geometry
Reproducible measurement paths with ±0.1 mm repositioning accuracy
Seamless integration into existing test benches
Cross-industry application (automotive, aerospace, mechanical engineering, building acoustics)
Compatibility with NVH analysis workflows from PAK Software

✅Conclusion

The robot-assisted sound intensity measurement system is a quantum leap for efficient, precise, and scalable NVH measurement technology. Where manual programming and high personnel costs used to be the norm, intelligent algorithms and robot-assisted automation now ensure maximum efficiency with minimum effort.

📩 Contact us

for individual NVH consulting or a demonstration of the measurement method.

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