Reduction of Structure-Borne Sound by Damping Treatment

Hybrid Isolation of Structure - Borne Sound

Improved knock detection by time variant filtered structure-borne sound

In order to detect knock in spark plug engines generally structure–borne sound signals measured by acceleration sensors mounted on the engine housing are used. At test bed engines additional pressure sensors measuring the pressure inside the combustion chamber deliver a reference signal to adjust the parameters of knock detection based on the sound signal. We show by experimental results that t...

Structure-Borne Sound and Aurally Active Spaces

ABSTRACT This paper provides a report of a research effort to transform architectural and scenographic surfaces into sound sources and use them in artistic creation. Structure-borne sound drivers are employed to induce sound into the solid surfaces, making them vibrate and emit sound. The sound waves can be perceived both via the aural (airborne diffusion) as well as the tactile (structure-born...

Structure-borne Sound – Phenomena and Prediction

The prediction of the sound radiated by vibrating structures and the layout of measures to reduce it, is a key issue for maintaining appropriate comfort in residential buildings, for guaranteeing the operability of sensitive machinery in production and testing and for the provision of appropriate conditions at working places. For the prediction the excitation, the transmission and the radiation...

Sound Bridge Localization in Buildings by Structure - borne Sound Intensity Measurements *

Sound Bridge Localization in Buildings by Structure-borne Sound Intensity Measurements Summary A localization procedure is described which per· mits fast and accurate localization of point-like sound bridges in buildings by means of measurements of the . vibrational intensity at a few points on the wall or : floor. In a laboratory experiment a resolution of · about 10 em was achieved with seven...