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TU Berlin

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David Ackermann

Lupe

David Ackermann
Raum: EN 150/151
Telefon: +49 30 - 314 290 94
E-Mail: david.ackermann [at] tu-berlin.de

Fields of Research:

  • Virtuelle Akustik
  • Auralisation
  • Audiotechnik
  • Beschallungstechnik
  • Messtechnik

Teaching Activities

Laborpraktikum Audiotechnik: Lautsprechertechnik (seit 2016)

Open Data Publications

A Multi-channel Anechoic Orchestra Recording of Beethoven's Symphony No. 8 op. 93

This data set contains an excerpt of the anechoic recording of the Symphony No. 8 in F Major, Op. 93 by Ludwig van Beethoven, performed by the "Orchester Wiener Akademie" conducted by Martin Haselböck. It was recorded in the anechoic chamber of the TU Berlin.

GRAP - A Ground Truth on Room Acoustical Analysis and Perception

A database of 35 virtual room models was created that can serve as a ground truth for the future development of room acoustical parameters beyond ISO 3382-1.

BRAS - Benchmark for Room Acoustical Simulation

The Benchmark for Room Acoustical Simulation (BRAS) contains eleven acoustical scenes that are intended for the evaluation of room acoustical simulation software.

A Database on Musicians’ Movements During Musical Performances

The movements of 20 musicians playing 11 different musical instruments, including all standard orchestral instruments, were captured during solo performances by means of a motion capturing system under concert-like conditions.

Publications

A benchmark for room acoustical simulation. Concept and database
Citation key Brinkmann2021
Author Brinkmann, Fabian and Aspöck, Lukas and Ackermann, David and Opdam, Rob and Vorländer, Michael and Weinzierl, Stefan
Pages 107867
Year 2021
DOI 10.1016/j.apacoust.2020.107867
Journal Applied Acoustics
Volume 176
Month may
Abstract Room acoustical simulations are usually evaluated by comparing them to measurements in corresponding physical environments as a benchmark. However, it proved to be challenging to provide a precise representation of the room geometry, the source and receiver characteristics, and the absorption and scattering coefficients to be re-modeled in the simulation. We aim to overcome these shortcomings by providing a database that can serve as a Benchmark for Room Acoustical Simulations (BRAS) and which is expandable and permanently available to researchers and developers of simulation software. The database includes a selection of reference scenes such as ``single reflection'', or ``diffraction around an infinite wedge'' which isolate specific acoustic phenomena. This article introduces the concept of the BRAS along with the description of the currently contained acoustic scenes and discusses the implication of measurement errors. The acquisition of impulse responses for omnidirectional and binaural receivers, the identification of the boundary conditions, and the data structure is detailed in the database itself. The BRAS is publicly available11https://dx.doi.org/10.14279/depositonce-6726.3.. The free license under which it is provided allows for future extensions such as additional scenes or improved data due to advanced measurement techniques.
Link to publication Download Bibtex entry

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