| A review of acoustic imaging methods using phased microphone arrays: Part of the “Aircraft Noise Generation and Assessment” Special Issue R Merino-Martínez, P Sijtsma, M Snellen, T Ahlefeldt, J Antoni, CJ Bahr, ... CEAS Aeronautical Journal 10, 197-230, 2019 | 381 | 2019 |
| A comparison of microphone phased array methods applied to the study of airframe noise in wind tunnel testing CJ Bahr, WM Humphreys, D Ernst, T Ahlefeldt, C Spehr, A Pereira, ... 23rd AIAA/CEAS aeroacoustics conference, 3718, 2017 | 85 | 2017 |
| Contributions of Different Aeroacoustic Sources to Aircraft Cabin Noise N Hu, H Buchholz, M Herr, C Spehr, S Haxter 19th AIAA/CEAS Aeroacoustics Conference (34th AIAA Aeroacoustics Conference), 2013 | 51 | 2013 |
| Comparison of model predictions for coherence length to in-flight measurements at cruise conditions S Haxter, C Spehr Journal of Sound and Vibration 390, 86-117, 2017 | 41 | 2017 |
| Spectral Broadening by Shear Layers of Open Jet Wind Tunnels P Sijtsma, S Oerlemans, T Tibbe, T Berkefeld, C Spehr 20th AIAA/CEAS Aeroacoustics Conference, 2014 | 39 | 2014 |
| Decorrelation of Acoustic Wave Propagation through the Shear Layer in Open Jet Wind Tunnel D Ernst, C Spehr, T Berkefeld AIAA Aviation - 21st AIAA/CEAS Aeroacoustics Conference, 2015 | 34 | 2015 |
| Two-dimensional evaluation of turbulent boundary layer pressure fluctuations at cruise flight conditions S Haxter, C Spehr 18th AIAA/CEAS Aeroacoustics Conference (33rd AIAA Aeroacoustics Conference …, 2012 | 25 | 2012 |
| In-flight sound measurements: a first overview C Spehr, H Hennings, H Buchholz, M Bouhaj, S Haxter, A Hebler 18th AIAA/CEAS Aeroacoustics Conference (33rd AIAA Aeroacoustics Conference …, 2012 | 23 | 2012 |
| Road to acquisition: Preparing a MEMS microphone array for measurement of fuselage surface pressure fluctuations T Ahlefeldt, S Haxter, C Spehr, D Ernst, T Kleindienst Micromachines 12 (8), 961, 2021 | 22 | 2021 |
| Beamforming for measurements under disturbed propagation conditions using numerically calculated Green’s functions M Lehmann, D Ernst, M Schneider, C Spehr, M Lummer Journal of Sound and Vibration 520, 116638, 2022 | 20 | 2022 |
| Automatic source localization and spectra generation from sparse beamforming maps A Goudarzi, C Spehr, S Herbold The Journal of the Acoustical Society of America 150 (3), 1866-1882, 2021 | 20 | 2021 |
| Weighted data spaces for correlation-based array imaging in experimental aeroacoustics HG Raumer, C Spehr, T Hohage, D Ernst Journal of Sound and Vibration 494, 115878, 2021 | 20 | 2021 |
| Uniqueness of an inverse source problem in experimental aeroacoustics T Hohage, HG Raumer, C Spehr Inverse Problems 36 (7), 075012, 2020 | 18 | 2020 |
| Obtaining phase velocity of turbulent boundary layer pressure fluctuations at high subsonic Mach number from wind tunnel data affected by strong background noise S Haxter, J Brouwer, J Sesterhenn, C Spehr Journal of Sound and Vibration 402, 85-103, 2017 | 18 | 2017 |
| INFINITE BEAMFORMING: WAVENUMBER DECOMPOSITION OF SURFACE PRESSURE FLUCTUATIONS S Haxter, C Spehr Berlin Beamforming Conference 2014, 19. - 20. Feb. 2014, Berlin, Germany, 2014 | 17 | 2014 |
| Comparison of microphone array measurements in the closed test section of LSWT and ETW C Spehr, T Ahlefeldt CEAS Aeronautical Journal 10, 267-285, 2019 | 14 | 2019 |
| Aeroacoustic testing on a full aircraft model at high Reynolds numbers in the European Transonic Windtunnel T Ahlefeldt, D Ernst, A Goudarzi, HG Raumer, C Spehr Journal of Sound and Vibration 566, 117926, 2023 | 12 | 2023 |
| Expert decision support system for aeroacoustic source type identification using clustering A Goudarzi, C Spehr, S Herbold The Journal of the Acoustical Society of America 151 (2), 1259-1276, 2022 | 12 | 2022 |
| Design of dual-frequency piezoelectric MEMS microphones for wind tunnel testing L Wu, X Chen, HD Ngo, E Julliard, C Spehr AIAA SciTech 2022 Forum, 1021, 2022 | 10 | 2022 |
| Aircraft Noise Generation and Assessment: A review of acoustic imaging methods using phased microphone arrays R Merino-Martinez, P Sijtsma, M Snellen, T Ahlefeldt, J Antoni, C Bahr, ... CEAS Aeronautical Journal 10 (1), 197-230, 2017 | 10 | 2017 |
Stefan HaxterGerman Aerospace Center (DLR); Department of Experimental MethodsVerified email at dlr.de
