Print Email Facebook Twitter Assessing the performance of two new acoustic imaging techniques Title Assessing the performance of two new acoustic imaging techniques Author Nijhof, Daniëlle (TU Delft Aerospace Engineering; TU Delft Control & Operations) Contributor Snellen, M. (mentor) Sijtsma, P. (mentor) Degree granting institution Delft University of Technology Programme Aerospace Engineering Date 2018-01-25 Abstract These are exciting times to work in the field of acoustics: researchers have a more granular understanding of sound than ever before due to the ability to acquire, store and analyze unprecedented amounts of acoustical data. The purpose of acoustic imaging is noise reduction. If noise can be measured, it can be reduced. Acoustic imaging is generally performed with a technique called conventional beamforming, which makes use of an array of microphones and of the phase of sound at the different microphones. Two new acoustic imaging techniques are Global Optimization and Source Power Integration, improving on the shortcomings of conventional beamforming. This thesis investigated the performance of Global Optimization and Source Power Integration in comparison to conventional beamforming. Two of the main findings are that the Global Optimization technique is good at precisely identifying closely spaced sound sources and that the Source Power Integration technique can accurately determine the sound power levels of distributed sources. Subject beamformingacoustic imagingoptimization algorithm To reference this document use: http://resolver.tudelft.nl/uuid:1dd957fb-6ad4-4804-b903-cae9218661ed Part of collection Student theses Document type master thesis Rights © 2018 Daniëlle Nijhof Files PDF Thesis_Control_and_Operat ... Nijhof.pdf 7.42 MB Close viewer /islandora/object/uuid:1dd957fb-6ad4-4804-b903-cae9218661ed/datastream/OBJ/view