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measurements, diagnostics, analysis

The KLIPPEL R&D System creates an innovative environment which accelerates the development of electro-acoustical transducers and audio electronics. A suite of powerful tools links numerical simulation based on lumped parameter and finite element modeling with practical measurements using synthetic test signals and ordinary audio signals (music) as well. Dedicated hardware gives powerful signal processing capabilities and supports electrical, mechanical and acoustical sensors controlled by scanning robotics and multiplexers to measure also distributed parameters on the loudspeaker cone and in the 3D sound field. A complete set of loudspeaker characteristics comprising linear, nonlinear and thermal parameters comprehensively describe the loudspeaker at small and high amplitudes. New ways of loudspeaker diagnostics are provided to find causes of nonlinear distortion and to understand vibration and radiation problems. This system assists the designer to optimize the transducer and to complete the audio system with respect to costs, weight and size producing the desired acoustical output with higher efficiency.

Defect Diagnostics, Test Automation, Process Control

The KLIPPEL QC SYSTEM satisfies the particular requirements during the end-of-line testing of transducers (e.g. loudspeaker drive units) and complete audio systems. Fast and reliable detection of loudspeaker defects (e.g. rub & buzz, particles, air leakage noise) in an production environment (noise immunity) are realized by using new patent protected measurement techniques, a cost-effective and robust hardware and a flexible software which is easy to use. The KLIPPEL QC System provides not only conventional measurements and PASS/FAIL verdicts but also diagnostic information (e.g. voice coil offset) and statistical tools which is the basis for controlling the production process and maximizing the yield rate. 


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