TY - GEN A1 - Ackermann, David A1 - Böhm, Christoph A1 - Weinzierl, Stefan T1 - A Database on Musicians’ Movements During Musical Performances N2 - 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. KW - Musical Acoustics KW - Virtual Acoustc KW - Room Acoustic Y1 - 2018 U6 - https://doi.org/10.14279/depositonce-7469 N1 - DFG, FOR 1557, Simulation and Evaluation of Acoustical Environments (SEACEN) PB - TU Berlin ER - TY - JOUR A1 - Ackermann, David A1 - Böhm, Christoph A1 - Weinzierl, Stefan T1 - On the numerical simulation of natural acoustic sound sources [Meeting Abstract] JF - The Journal of the Acoustical Society of America N2 - A convincing auralization of acoustical scenes does not only require a proper modeling of the sound propagation between source and receiver, but also an appropriate representation of the acoustical source itself. While the properties of electro-acoustic sources can be well represented by advanced loudspeaker formats with high resolution, the complex, time-variant behavior of natural acoustic sources such as speakers, singers or musical instruments is not in any way considered by current techniques for acoustical simulation and auralization. In the talk, we will present measurement results of the sound power and directivity of natural acoustic sound sources and their dependence on pitch and dynamic level, as well as measurements of typical movements of the source during musical performances. We will demonstrate the physical and perceptual relevance of these effects both in the direct field and in room acoustical environments based on a technical and perceptual evaluation, and discuss new approaches to include these effects in numerical simulations. KW - Acoustics KW - Musical instruments KW - Musical performance KW - Sound production technology KW - Computer simulation Y1 - 2017 U6 - https://doi.org/10.1121/1.4989163 SN - 0001-4966 SN - 1520-8524 VL - 141 IS - 5_Supplement SP - 3997 EP - 3997 ER - TY - GEN A1 - Ackermann, David A1 - Domann, Julian A1 - Brinkmann, Fabian A1 - Arend, Johannes M. A1 - Weinzierl, Stefan T1 - Database: Recordings of a Loudspeaker Orchestra with Multi-Channel Microphone Arrays for the Evaluation of Spatial Audio Methods N2 - For a comparative physical and perceptual evaluation of conceptually different binaural rendering techniques, recordings are needed in which all other factors affecting the sound, such as the sound radiation of the sources, the room acoustic environment and the recording position are kept constant. To provide such a recording, the sound field of an 18-channel loudspeaker orchestra fed by anechoic recordings of a chamber orchestra was captured in two rooms with nine different receivers. In addition, impulse responses were recorded for each sound source and receiver. The anechoic audio signals, the full loudspeaker orchestra recordings and all measured impulse responses are available with open access in the SOFA 2.1 (AES69-2022) format. KW - loudspeaker orchestra KW - multi-channel microphone arrays KW - Lautsprecherorchester KW - mikrofonarray Y1 - 2022 UR - https://doi.org/10.17743/jaes.2022.0059 U6 - https://doi.org/10.14279/depositonce-15774.3 PB - TU Berlin CY - Berlin ER - TY - GEN A1 - Ackermann, David A1 - Ilse, Michael A1 - Grigoriev, Dmitry A1 - Lepa, Steffen A1 - Pelzer, Sönke A1 - Vorländer, Michael A1 - Weinzierl, Stefan T1 - A Ground Truth on Room Acoustical Analysis and Perception (GRAP) N2 - 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. Some of the room models are based on existing performance venues, however without yielding a perfect match of measured and simulated acoustical parameters. Others are artificial designs which were made to systematically cover a wide variety of room acoustical properties. Each of the 35 acoustical environments included in the GRAP database consists of three components: (1) the room model which specifies source and receiver positions and the acoustic properties of the surfaces, (2) the simulated monaural and binaural impulse responses, as well as (3) the item and factor scores, based on a listening test using the Room Acoustic Quality Inventory (RAQI). KW - room acoustical analysis KW - virtual acoustic KW - room acoustic simulation Y1 - 2018 U6 - https://doi.org/10.14279/depositonce-7003.4 N1 - DFG, FOR 1557, Simulation and Evaluation of Acoustical Environments (SEACEN) PB - TU Berlin CY - Berlin ER - TY - GEN A1 - Böhm, Christoph A1 - Ackermann, David A1 - Weinzierl, Stefan T1 - A Multi-channel Anechoic Orchestra Recording of Beethoven's Symphony No. 8 op. 93: Audio Recordings and Accompanying Data N2 - 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. KW - anechoic audio KW - auralization KW - virtual acoustics Y1 - 2018 UR - https://doi.org/10.17743/jaes.2020.0056 U6 - https://doi.org/10.14279/depositonce-6729.2 N1 - DFG, FOR 1557, Simulation and Evaluation of Acoustical Environments (SEACEN) PB - TU Berlin CY - Berlin ER - TY - GEN A1 - Aspöck, Lukas A1 - Brinkmann, Fabian A1 - Ackermann, David A1 - Weinzierl, Stefan A1 - Vorländer, Michael T1 - BRAS – A Benchmark for Room Acoustical Simulation KW - Room acoustic simulation KW - virtual acoustic Y1 - 2019 UR - https://doi.org/10.1016/j.apacoust.2020.107867 U6 - https://doi.org/10.14279/depositonce-6726.3 PB - TU Berlin CY - Berlin ER - TY - CHAP A1 - Ebert, Julian A1 - Ackermann, David A1 - Weinzierl, Stefan T1 - Messung der Richtcharakteristik von Mikrofonen mit hoher Auflösung [Manuscript] T2 - Fortschritte der Akustik – DAS\DAGA 2025 Y1 - 2025 SN - 978-3-939296-23-2 U6 - https://doi.org/10.71568/dasdaga2025.178 SP - 487 EP - 490 PB - Deutsche Gesellschaft für Akustik eV (DEGA) CY - Berlin ER - TY - JOUR A1 - Böhm, Christoph A1 - Ackermann, David A1 - Weinzierl, Stefan T1 - A Multi-Channel Anechoic Orchestra Recording of Beethoven’s Symphony No. 8 op. 93 JF - Journal of the Audio Engineering Society Y1 - 2020 U6 - https://doi.org/10.17743/jaes.2020.0056 VL - 68 IS - 12 SP - 977 EP - 984 PB - Audio-Engineering Society ER - TY - THES A1 - Versümer, Siegbert T1 - Generalized prediction of quiet indoor soundscapes based on retrospective and in-situ judgements N2 - This dissertation aims to enhance the understanding of how people perceive and react to everyday sounds, particularly in their homes. The focus is laid on indoor soundscapes and the interplay between acoustic measures, individual differences, and contextual factors. A retrospective online study and a field study at peoples’ homes based on the Experience Sampling Method were the ecologically valid ground truth for four key publications. These address significant gaps in soundscape research by providing insights into the factors influencing sound perception in real-life contexts, the evaluation of low-level (i.e., quiet) sounds, and the consequences of (in)appropriate statistical analysis of imbalanced hierarchical soundscape data. The studies reveal that the sound source category is a critical predictor of annoyance and the pleasantness of soundscapes, with different types of sounds (e.g., natural, human, technical) having distinct impacts. Contrary, the effect of acoustic measures like perceived and calculated loudness on sound perception was expected to be high but was masked by contextual factors. These were the perceived control over the acoustic situation and the affective state of a person in the specific situation, proving context-related perceptual measures to be more important than the sound itself. The research consequently highlights the need for automatic sound source identification in complex polyphony everyday sound environments and suggests that individual preferences and liking of sounds could be potential factors in predicting individual sound perception. The dissertation also emphasizes the importance of using appropriate statistical methods, including mixed-effects models and nonlinear regression techniques, to generate more generalizable and more valid results based on hierarchical and imbalanced soundscape data. The findings underscore the limitations of traditional acoustic metrics and advocate for the use of time-series data to better capture the dynamic nature of everyday sound environments in contrast to stimuli typically used in laboratory studies. The author further developed a multi-objective function for avoiding both over- and underfitting during hyperparameter tuning, significantly improving generalized model fitting in soundscape research. Overall, this work contributes to the field of soundscape research by providing a comprehensive analysis of sound perception in indoor environments, highlighting the importance of context, individual differences, and advanced statistical methods in understanding and modeling soundscapes. Finally, future perspectives were discussed, such as the focus on individual preferences, experiences, and expectations for the improved prediction of individual sound perception. N2 - Diese Dissertation verbessert das Verständnis dafür, wie Menschen alltägliche Geräusche wahrnehmen. Der Schwerpunkt liegt dabei auf der Geräuschkulisse in Innenräumen und dem Zusammenspiel von (psycho-)akustischen Messgrößen, individuellen Unterschieden und kontextuellen Faktoren. Eine retrospektive Online-Studie und eine Feldstudie in Wohnräumen der Probanden bildeten die ökologisch valide Grundlage der vier Schlüsselpublikationen. Diese untersuchen Faktoren, die die Geräuschwahrnehmung in realen Kontexten beeinflussen, indem sie die Bewertung von Geräuschen und die Folgen einer (un-)angemessenen statistischen Analyse von unausgewogenen hierarchischen Soundscape-Daten betrachten. Die Studien zeigen, dass die Kategorie der Geräuschquelle ein entscheidender Prädiktor für die Belästigung und die Angenehmheit ist. Entgegen der Erwartung, dass akustische Messgrößen wie die wahrgenommene und berechnete Lautheit einen großen Einfluss auf die Geräuschwahrnehmung haben, zeigte sich jedoch, dass diese durch kontextbezogene Faktoren maskiert wurde. Dabei handelte es sich um die empfundene Kontrolle über die akustische Situation und den emotionalen Zustand einer Person in der spezifischen Situation, wobei sich kontextbezogene Wahrnehmungsmaße als wichtiger erwiesen als das Umgebungsgeräusch selbst. Die Untersuchung unterstreicht folglich die Notwendigkeit einer automatischen Identifizierung von Geräuschquellen in komplexen polyphonen alltäglichen Geräuschumgebungen und legt nahe, dass individuelle Vorlieben für bestimmte Klänge wichtige Faktoren bei der Vorhersage der individuellen Geräuschwahrnehmung sein könnten. Die Dissertation unterstreicht zusätzlich die Bedeutung der Verwendung geeigneter statistischer Methoden, einschließlich Modellen mit gemischten Effekten und nichtlinearen Regressionstechniken, um verallgemeinerungsfähigere Ergebnisse auf der Grundlage hierarchischer und unausgewogener Daten von Soundscape-Studien zu erzielen. Die Ergebnisse zeigen zudem die Grenzen akustischer und psychoakustischer Metriken auf und implizieren die Verwendung von Zeitreihendaten, um die dynamische Natur alltäglicher Geräuschumgebungen besser zu repräsentieren. Darüber hinaus entwickelte der Autor eine Mehrzieloptimierung zur Vermeidung von Über- und Unteranpassung beim Hyperparametertuning, wodurch die Anpassung verallgemeinerbarer Modelle erheblich verbessert wird. Insgesamt leistet diese Arbeit einen wesentlichen Beitrag, indem sie eine umfassende Analyse der Geräuschwahrnehmung in Innenräumen liefert und die Bedeutung von Kontext, individuellen Unterschieden und angemessenen statistischen Methoden für das Verständnis und die Modellierung von Soundscapes hervorhebt. Abschließend werden mögliche Zukunftsperspektiven erörtert, wie z. B. der Fokus auf individuelle Präferenzen, Erfahrungen und Erwartungen für eine verbesserte Vorhersage der individuellen Geräuschwahrnehmung. KW - Psychoakustik KW - Lautwahrnehmung KW - Lautstärke KW - Belästigung Y1 - 2025 U6 - https://doi.org/10.14279/depositonce-23962 PB - Berlin CY - Technische Universität Berlin ER - TY - CHAP A1 - Lemke, Mathias A1 - Hölter, Arne A1 - Ackermann, David A1 - Weinzierl, Stefan T1 - Bestimmung von Richtcharakteristiken unter Berücksichtigung reflektierender Randbedingungen T2 - Fortschritte der Akustik – DAGA 2024 - 50. Jahrestagung für Akustik, 18.-21. März 2024, Hannover Y1 - 2024 UR - https://pub.dega-akustik.de/DAGA_2024/files/upload/paper/67.pdf SN - 978-3-939296-22-5 SP - 648 EP - 650 PB - Deutsche Gesellschaft für Akustik e.V. CY - Berlin ER -