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Adjoint Sound

Experimental Validation

Lupe [1]

first experiments in anechoic room

Optimization of Driving Functions

Lupe [2]

circular loudspeaker array

Sound Field Simulation

Lupe [3]

spatial sound pressure level distribution


  • The contributions "Pressure-tight and non-stiff volume penalization for versatile boundary conditions" and "Adjoint-based identification of complex moving sound sources in the time domain" were presented at the 20th STAB workshop of the DLR Göttingen from November 16, 2021 to November 17, 2021.
  • At the DAGA - annual meeting of the Deutsche Gesellschaft für Akustik - from August 15, 2021 to August 18, 2021 in Vienna, the contributions "Adjungierten-basierte Synthese und Bestimmung optimaler Treiberfunktionen von Lautsprechern mit komplexer Richtcharakteristik", "Adjungierten-basierte Schallfelderzeugung im Zeitbereich mit Zielfunktion im Frequenzraum" and "Impedanz-Randbedingungen im Zeitbereich mittels eines Immersed-Boundary-Verfahrens" were presented.
  • As part of the Séminaire Signal et Apprentissage of the Institut de Mathématiques de Marseille, the contribution "Adjoint-based identification of sound sources for sound reinforcement, source localization and acoustic flow control" was presented on December 11, 2020.
  • In The Journal of the Acoustical Society of America, the article "Directional sound source modeling using the adjoint Euler equations in a finite-difference time-domain approach" was published, see publications.
  • For the DAGA - annual meeting of the Deutsche Gesellschaft für Akustik - in Hannover, the paper "Synthese komplexer Richtcharakteristiken für eine Schallfeldoptimierung im Zeitbereich" was contributed, see publications.
  • The contribution "Adjoint-Based CAA Applications: Source Identification and Modeling" was presented at the final symposium of the SFB 880 from December 17, 2019 to December 18, 2019 in Braunschweig.

  • The contribution "Adjoint-Based Sound Source Identification" was presented at the 'Workshop Strömungsschall in Luftfahrt, Fahrzeug- und Anlagentechnik' from December 5, 2019 to December 6, 2019 in Nürnberg.
  • In the September issue 2019 of The Journal of the Acoustical Society of America, the article "Adjoint-Based Optimization of Sound Reinforcement including Non-Uniform Flow" was published, see publications.

  • For the 23rd International Congress on Acoustics (ICA) in Aachen from September 09, 2019 to September 13, 2019, the paper "Adjoint-Based Sound Reinforcement in the Time Domain" was contributed. Validation examples for three-dimensional loudspeaker-sound field arrangements under the influence of wind and temperature stratification were presented.
  • For the DAGA - annual meeting of the Deutsche Gesellschaft für Akustik - from March, 18 2019 to March, 21 2019 in Rostock, the paper 'Optimized Sound Field Generation in the Time Domain -- Validation for Source Arrays in 2D' was contributed. Validation examples for two-dimensional loudspeaker-sound field arrangements were presented.
  • An expert group of 9 participants from the realms of research, development, measurement and application came together at TU Berlin on May 29, 2018. They discussed quality criteria for large-scale sound reinforcement. 



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