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- W2912173381 abstract "SODIX is an acoustic source localisation method that is able to resolve the directivityof the sound sources. In this paper, SODIX is applied to array measurements with a full-scale turbofan engine. Two different microphone arrays were used: 1) a linear array nearthe engine that was relatively densely populated with a total number of 248 microphones,and 2) a sparse microphone array in the far-field with only 31 microphones covering anangular range from 10 to 160 degrees. The source localisation results obtained from the analysisof both arrays are compared and it will be shown, that also the sparse array yields verygood results. One free parameter in the SODIX algorithm is a penalty function that setsa constraint on the directivities of the sources, i.e. the amplitude changes from a singlesource to different microphones. The influence of this penalty function on the quality ofthe results is investigated on the basis of the experimental data and synthetic data generatedfrom a relatively simple engine noise model. A practical improvement for the setup of thesparse far-field microphone array is proposed for future measurements." @default.
- W2912173381 created "2019-02-21" @default.
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- W2912173381 date "2018-01-01" @default.
- W2912173381 modified "2023-09-24" @default.
- W2912173381 title "Improving source localisation with SODIX for a sparse microphone array" @default.
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