@article{Latzel_Wagener_Vormann_Mülder_2018, title={Speech intelligibility in dual task with hearing aids and adaptive digital wireless microphone technology}, volume={6}, url={https://proceedings.isaar.eu/index.php/isaarproc/article/view/2017-47}, abstractNote={<p>Remote microphones (RMs) have been developed to support hearing aid users to understand distant talkers. A drawback of these systems is the deteriorated speech intelligibility in the near-field, as the hearing aids need to be in omnidirectional mode in combination with these RMs. This has changed with the introduction of a new hearing-aid technology developed specifically to support the user in the near-field when using a RM, by enabling directional microphones of the hearing aid. To verify the performance of this novel system, speech intelligibility tests were conducted using a dual-task paradigm. <em>Primary task:</em> Sentences of the female Oldenburg Matrix Test were presented continuously. The task of the subject was to mark the recognized name on a tablet. <em>Secondary task:</em> A speech recognition test with meaningful sentences (Göttinger Sentence Test, male voice) was carried out with the task to repeat the sentences. The primary-task stimuli were presented from a loudspeaker in the far-field and the secondary-task stimuli from a loudspeaker in the near-field (and vice versa), within a surrounding loudspeaker array playing restaurant noise. Results of 15 hearing-impaired subjects showed that the directional hearing-aid microphone delivered superior performance compared to the omni microphone. Benefits of the RM were confirmed for both primary and secondary tasks. For a higher ecological validity, the data were analyzed considering both tasks simultaneously. This analysis showed a positive effect of the directional hearing aid microphone.</p>}, journal={Proceedings of the International Symposium on Auditory and Audiological Research}, author={Latzel, Matthias and Wagener, Kirsten C. and Vormann, Matthias and Mülder, Hanse}, year={2018}, month={Jan.}, pages={383–390} }