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Carsten Spehr
Carsten Spehr
Institute of Aerodynamics and Flow Technology, German Aerospace Center, DLR
Verified email at dlr.de
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Year
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
3052019
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
732017
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
402013
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
382017
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
312014
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
302015
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
232012
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
222012
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
182021
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
182017
INFINITE BEAMFORMING: WAVENUMBER DECOMPOSITION OF SURFACE PRESSURE FLUCTUATIONS
S Haxter, C Spehr
Berlin Beamforming Conference 2014, 19. - 20. Feb. 2014, Berlin, Germany, 2014
172014
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
152021
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
152021
Uniqueness of an inverse source problem in experimental aeroacoustics
T Hohage, HG Raumer, C Spehr
Inverse Problems 36 (7), 075012, 2020
142020
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
122019
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
92022
Listening to Turbulence: Measuring Coherence Decay at Different Positions on an Aircraft in Cruise Flight.
S Haxter, C Spehr
20th AIAA/CEAS Aeroacoustics Conference, 2014
82014
Microphone-array Measurements in wind tunnels: Challenges and Limitations
L Koop, S Kröber, T Ahlefeldt, K Ehrenfried, C Spehr, A Lauterbach
Berlin Beamforming Conference 2012, 2012
82012
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
72022
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
72022
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