D. Knuth, Y. Hüpel, T.P. Ring, S.C. Langer

Early prediction and optimization capabilities of aircraft cabin noise are a vital tool in preliminary design stages for increasing product acceptance and customer comfort. Having access to audio samples of early development results can be immensely helpful in the design process by allowing listening tests, further psychoacoustic considerations or presentation purposes. While prototype measurements might be too costly or otherwise not available, auralization techniques based on digital signal processing can serve as an alternative. This contributions auralization methodology turns a systems frequency response function into a stationary stochastic broadband signal by convolving the systems response with white noise. This way, an output signal of any desired length with the spectral shape of the predicted cabin noise can be generated and used for assessment. The methodology is applied to measured car cabin noise. The resulting auralization shares the main audible characteristics with the reference and is therefore deemed appropriate for further investigations. Additional steps to improve the auralizations realism, i.e. supplementing the signals high frequency range with corresponding recordings and applying a recordings phase content to the auralized signal, are considered.

Deutscher Luft- und Raumfahrtkongress 2023, Stuttgart

Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V., Bonn, 2024

Conference Paper

englisch

21,0 x 29,7 cm, 9 Seiten

urn:nbn:de:101:1-2024012414373828763399

10.25967/610523

Cabin noise, Auralization, FEM

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Knuth, D.; Hüpel, Y.; et al. (2024): Auralization of Aircraft Cabin Noise Predictions in Early Development Stages. Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V.. (Text). https://doi.org/10.25967/610523. urn:nbn:de:101:1-2024012414373828763399.

24.01.2024