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Implementation of Intelligibility Algorithms into EASE 4.0

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In acoustic simulation programs very different algorithms are used to calculate the intelligibil-ity of speech and music. The desired results are obtained by postprocessing fixed energy ra-tios as well as time-depending impulse responses. In EASE 4.0 there are have been imple-mented now all usual intelligibility measures, derived by means of simulated high resolution data or by applying statistical estimations. This paper compares all these measures and meth-ods like STI, AlCons, definition etc. by means of the results obtained within a common com-puter model. Recommendations for applications will be given finally.

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