COMSOL and Klippel, Integration of Simulation and Measurement Data

Modeling and Simulation and Measurement systems evolved significantly in the past decade. Important progress is now bridging the gap between COMSOL simulation and Klippel measurement data, Roger Shively reports after returning from Orlando, FL, where we attended another edition of the ALTI Expo & Conference (June 11-13, 2023). This article summarizes the content covered in a very important session as part of the APDA-ALTI Education Symposium 2023.

In this last issue for 2018, we share with you what you need to know about the forthcoming CES 2019 show, Robert Werner tells us everything about the latest software release for the Klippel Analyzer System, and Mike Klasco discusses recycling neodymium magnets. James Croft revisits an Acoustic Passive Radiator Rocking Mode Reducing patent awarded to Bose, Vance Dickason puts a compression driver from Celestion and another from Radian on his Test Bench. This and much more, not to be missed in Voice Coil December 2018.

Loudspeaker defects caused by manufacturing, aging, overload, or climate impact generate a special kind of irregular distortion commonly known as rub & buzz, which is highly audible and intolerable for the human ear. This article, originally published in Voice Coil, June 2011, discusses how to measure and detect those defects.

This article discusses the physical causes of regular loudspeaker distortions, their modeling by using lumped and distributed parameters, the objective assessment using modern measurement techniques, and the perception by the human ear. Article originally published in Voice Coil, May 2011