TY - CHAP A1 - Feistel, Stefan A1 - Ackermann, David A1 - Weinzierl, Stefan T1 - Using High-Resolution Directivity Data of Musical Instruments for Acoustic Simulation and Auralization T2 - Proceedings of the 155th Audio Engineering Society Conventio, New York, 25-27th of October 2023. Y1 - 2023 PB - Audio Engineering Society ER - TY - JOUR A1 - von Berg, Markus A1 - Steffens, Jochen A1 - Weinzierl, Stefan A1 - Müllensiefen, Daniel T1 - Assessing room acoustic listening expertise JF - Journal of the Acoustical Society of America N2 - Musicians and music professionals are often considered to be expert listeners for listening tests on room acoustics. However, these tests often target acoustic parameters other than those typically relevant in music such as pitch, rhythm, amplitude, or timbre. To assess the expertise in perceiving and understanding room acoustical phenomena, a listening test battery was constructed to measure the perceptual sensitivity and cognitive abilities in the identification of rooms with different reverberation times and different spectral envelopes. Performance in these tests was related to data from the Goldsmiths Musical Sophistication Index, self-reported previous experience in music recording and acoustics, and academic knowledge on acoustics. The data from 102 participants show that sensory and cognitive abilities are both correlated significantly with musical training, analytic listening skills, recording experience, and academic knowledge on acoustics, whereas general interest in and engagement with music do not show any significant correlations. The regression models, using only significantly correlated criteria of musicality and professional expertise, explain only small to moderate amounts (11%–28%) of the variance in the “room acoustic listening expertise” across the different tasks of the battery. Thus, the results suggest that the traditional criteria for selecting expert listeners in room acoustics are only weak predictors of their actual performances. Y1 - 2021 U6 - https://doi.org/10.1121/10.0006574 VL - 150 IS - 4 SP - 2539 EP - 2548 PB - Acoustical Society of America ER - TY - CHAP A1 - von Berg, Markus A1 - Steffens, Jochen A1 - Müllensiefen, Daniel A1 - Weinzierl, Stefan T1 - Gibt es raumakustische Hörexpertise? T2 - Fortschritte der Akustik - DAGA 2020: 46. Deutsche Jahrestagung für Akustik Y1 - 2020 U6 - https://doi.org/10.14279/depositonce-9998 SP - 858 EP - 861 PB - Deutsche Gesellschaft für Akustik e.V. CY - Berlin ER - TY - CHAP A1 - Böldt, Sebastian A1 - Steffens, Jochen A1 - Büttner, Clemens A1 - Weinzierl, Stefan T1 - Modellierung von Publikumsgeräuschen bei Veranstaltungen mit Sprache und Musik T2 - Fortschritte der Akustik - DAGA 2020: 46. Deutsche Jahrestagung für Akustik Y1 - 2020 U6 - https://doi.org/10.14279/depositonce-9991 SP - 850 EP - 853 PB - Deutsche Gesellschaft für Akustik e.V. CY - Berlin ER - TY - CHAP A1 - Wilczek, Tobias A1 - Steffens, Jochen A1 - Weinzierl, Stefan T1 - Zum Einfluss der Akustik auf die Qualität von Restaurants. Eine Feldstudie T2 - Fortschritte der Akustik - DAGA 2020: 46. Deutsche Jahrestagung für Akustik Y1 - 2020 UR - https://depositonce.tu-berlin.de/bitstream/11303/11109/4/wilczek_etal_2020.pdf U6 - https://doi.org/10.14279/depositonce-9999 SP - 854 EP - 857 PB - Deutsche Gesellschaft für Akustik e.V. CY - Berlin ER - TY - CHAP A1 - Luizard, Paul A1 - Steffens, Jochen A1 - Weinzierl, Stefan ED - Lautenbach, Margriet ED - Witew, Ingo B. ED - de Vries, Diemer ED - Hornikx, Maarten T1 - Adaptation of singers to physical and virtual room acoustics T2 - Proceedings of the International Symposium on Room Acoustics (ISRA) 2019, Amsterdam, Netherlands. Y1 - 2019 SN - 978-90-9032895-9 PB - Nederlands Akoestisch Genootschap CY - Heerde ER - TY - JOUR A1 - Steffens, Jochen A1 - Wilczek, Tobias A1 - Weinzierl, Stefan T1 - Junk Food or Haute Cuisine to the Ear? – Investigating the Relationship Between Room Acoustics, Soundscape, Non-Acoustical Factors, and the Perceived Quality of Restaurants JF - Frontiers in Built Environment N2 - Sound and music are well-studied aspects of the quality of experience in restaurants; the role of the room acoustical conditions, their influence on the visitors’ soundscape evaluation and their impact on the overall customer satisfaction in restaurants, however, has received less scientific attention. The present field study therefore investigated whether sound pressure level, reverberation time, and soundscape pleasantness can predict factors associated with overall restaurant quality. In total, 142 persons visiting 12 restaurants in Berlin rated relevant acoustical and non-acoustical factors associated with restaurant quality. Simultaneously, the A-weighted sound pressure level (LA,eq,15) was measured, and the reverberation time in the occupied state (T20,occ) was obtained by measurements performed in the unoccupied room and a subsequent calculation of the occupied condition according to DIN 18041. Results from linear mixed-effects models revealed that both the LA,eq,15 and T20,occ had a significant influence on soundscape pleasantness and eventfulness, whereby the effect of T20,occ was meditated by the LA,eq,15. Also, the LA,eq,15 as well as soundscape pleasantness were significant predictors of overall restaurant quality. A comprehensive structural equation model including both acoustical and non-acoustical factors, however, indicates that the effect of soundscape pleasantness on overall restaurant quality is mediated by the restaurant’s atmosphere. Our results support and extend previous findings which suggest that the acoustical design of restaurants involves a trade-off between comfort and liveliness, depending on the desired character of the place. KW - DOAJ Y1 - 2021 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-32115 SN - 2297-3362 N1 - The Supplementary Material for this article can be found online at: https://www.frontiersin.org/articles/10.3389/fbuil.2021.676009/full#supplementary-material; ut:000655121500001 VL - 676009 PB - Frontiers ER - TY - JOUR A1 - Luizard, Paul A1 - Steffens, Jochen A1 - Weinzierl, Stefan T1 - Singing in different rooms: Common or individual adaptation patterns to the acoustic conditions? JF - The Journal of the Acoustical Society of America Y1 - 2020 U6 - https://doi.org/10.1121/10.0000715 N1 - Open Access Veröffentlichung VL - 147 IS - 2 PB - ASA ER - TY - JOUR A1 - Versümer, Siegbert A1 - Blättermann, Patrick A1 - Rosenthal, Fabian A1 - Weinzierl, Stefan T1 - A comparison of methods for modeling soundscape dimensions based on different datasets JF - The Journal of the Acoustical Society of America N2 - Soundscape studies vary considerably in study design, statistical methods, and model fit metrics used. Due to this confounding of data and methods, it is difficult to assess the suitability of statistical modelling techniques used in the literature. Therefore, five different methods and two performance metrics were applied to three existing soundscape datasets to model soundscape Pleasantness and Eventfulness based on seven acoustic and three sociodemographic predictors. Datasets differed in soundscape type (urban outdoor vs indoor), experimental setting (field- vs lab-based), size, and study design (site- vs person-centered). The fixed-effects and mixed-effects methods ranged from linear to nonlinear regression based on advanced machine learning approaches. Results showed that models performed better for Eventfulness than for Pleasantness in most cases, while performance as measured by the out-of-sample R2 was dependent on the total variance of the target, especially in both field studies with imbalanced targets and groups. Nonlinear methods consistently outperformed linear regression, with random forest and extreme gradient boosting performing particularly well, while the performance levels of all nonlinear methods remained comparable. Mixed-effects models provided a more generalized, albeit slightly smaller prediction performance when tested on unknown groups. Finally, this study motivates the use of cross-validation with special splitting for analyzing small imbalanced datasets. KW - Acoustical properties KW - Audiometry KW - Psychological acoustics KW - Acoustic ecology KW - Artificial neural networks KW - Machine learning KW - Urban development KW - Finite-element analysis KW - Regression analysis KW - Statistical analysis KW - Akustische Eigenschaft KW - Audiometrie KW - Psychoakustik KW - Neuronales Netz KW - Maschinelles Lernen KW - Stadtentwicklung KW - Finite-Elemente-Methode KW - Regressionsanalyse KW - Statistische Analyse Y1 - 2025 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-48849 SN - 1520-8524 VL - 157 IS - 1 SP - 234 EP - 255 PB - AIP Publishing ER - TY - CHAP A1 - Wilczek, Tobias A1 - Steffens, Jochen A1 - Weinzierl, Stefan ED - Lautenbach, Margriet ED - Witew, Ingo B. ED - de Vries, Diemer ED - Hornikx, Maarten T1 - Room acoustics, soundscapes and customer satisfaction in restaurants – a field study T2 - Proceedings of the International Symposium on Room Acoustics (ISRA) 2019, Amsterdam, Netherlands. Y1 - 2019 SN - 978-90-9032895-9 U6 - https://doi.org/10.18154/RWTH-CONV-240148 SP - 854 EP - 857 PB - Nederlands Akoestisch Genootschap CY - Heerde ER - TY - INPR A1 - Beckmann, Felix A1 - Denfeld, Alexander A1 - Koehn, Konrad A1 - Medebach, Ina A1 - Steffens, Jochen A1 - Weinzierl, Stefan T1 - Untersuchung der akustischen Qualität von Restaurants in Berlin und Düsseldorf N2 - Widrige akustische Bedingungen stellen einen der Hauptgründe für Beschwerden in Restaurants dar; insbesondere bei hörbeeinträchtigten Gästen kann eine schlechte Akustik den Besuch im Restaurant negativ beeinflussen oder gar frühzeitig enden lassen. Um Empfehlungen hinsichtlich optimaler Nachhallzeiten sowie beobachtete Zusammenhänge zwischen akustischen und nichtakustischen Faktoren bei Restaurantbesuchen zu überprüfen und im Hinblick auf verschiedene Restaurantkategorien zu erweitern, wurden in der vorliegenden Studie 20 Restaurants in Berlin und NRW mit insgesamt mehr als 600 Gästen untersucht. Hierbei wurden sowohl die Nachhallzeit als auch der Lautstärkepegel sowie die Anzahl der Gäste im Raum über die Zeit erfasst. Mittels elektronischem Fragebogen wurden Soundscape-Parameter, Besuchsmotive sowie die empfundene Sprachverständlichkeit und Restaurantqualität erhoben. Erste Ergebnisse zeigen einen großen Zusammenhang zwischen objektiven akustischen Größen und wahrgenommener akustischer Angenehmheit und Sprachverständlichkeit, welcher je nach Restaurantkategorie variiert. Die Daten zeigen weiterhin, dass sich die akustische Angenehmheit nicht vollständig durch die Sprachverständlichkeit im Restaurant aufklären lässt. Implikationen für das akustische Design von Restaurants im Spannungsfeld zwischen Ruhe und Lebendigkeit werden diskutiert. Y1 - 2024 UR - https://pub.dega-akustik.de/DAGA_2024/files/upload/paper/619.pdf SN - 978-3-939296-22-5 SP - 271 EP - 274 ER - TY - CHAP A1 - Steffens, Jochen A1 - Weinzierl, Stefan ED - Astolfi, Arianna ED - Asdrubali, Francesco ED - Shtrepi, Louena T1 - Noise for dinner - Towards a comprehensive statistical model of the acoustical and overall quality of restaurants T2 - Proceedings of the 10th Convention of the European Acoustics Association Forum Acusticum 2023, September 11 - 15, 2023,Torino, Italy N2 - Studies on noise in restaurants have shown a multitude of potential negative effects, for example related to mood, overall satisfaction, intended revisit, the ability to communicate and the actual behaviour in the room. In this paper, we investigated the complex interplay between room acoustics, soundscape evaluation, non-acoustical aspects of a restaurant visit and overall restaurant quality. Based on acoustical measurements and reports from 142 persons visiting 12 restaurants in Berlin, we propose a structural equation model including both acoustical and non- acoustical factors and yielding a good overall fit. The model, for instance, suggests that the A-weighted sound level negatively impacts the assessment of overall restaurant quality, while the effect of soundscape pleasantness on overall restaurant quality is mediated by the restaurant’s perceived atmosphere. Moreover, the reverberation time was found to be effective predominantly through its effect on sound strength, which leads patrons to increasingly raise their speech level to ensure intelligibility. These results thus emphasize the need to design actively the restaurant’s acoustical atmosphere beyond pure loudness reduction which involves a specific trade-off between comfort and liveliness, depending on the desired character of the place. KW - European Acoustics Association KW - Raumakustik KW - Restaurant Y1 - 2023 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-47908 SN - 978-88-88942-67-4 SN - 2221-3767 SP - 3325 EP - 3327 PB - European Acoustics Association CY - Turin, Italy ER - TY - JOUR A1 - Versümer, Siegbert A1 - Steffens, Jochen A1 - Weinzierl, Stefan T1 - Day-to-day loudness assessments of indoor soundscapes: Exploring the impact of loudness indicators, person, and situation JF - The Journal of the Acoustical Society of America N2 - This study investigates loudness perception in real-world contexts using predictors related to the sound, situation, or person. In the study, 105 participants recorded 6594 sound environments in their homes, which were then evaluated based on the Experience Sampling Method. Hierarchical linear regressions using a loudness level based on ISO 532-1 allowed for obtaining the best model fits for predicting perceived loudness and explaining the highest variance. LAeq and LAF5 provided comparable results and may require less computational effort. However, the analysis shows that only one-third of the variance explained by fixed effects was attributable to the loudness level. Sixteen percent stemmed from perceived properties of the soundscape; 1% were attributable to relatively temporally stable, person-related predictors like participants' age; non-auditory situational predictors made no additional contribution. The results thus did not confirm previous findings on loudness perception under laboratory conditions, emphasizing the importance of the situational context. Along with the current paper, a comprehensive dataset, including the assessed person-related, situational, and sound-related measures as well as LAeq time-series and third-octave spectrograms, is provided to enable further research on sound perception, indoor soundscapes, and emotion. KW - Lautwahrnehmung KW - Akustische Eigenschaft KW - Hörschädigung KW - Lautstärke KW - Audiometrie KW - Sonogramm KW - Regressionsanalyse KW - Gauß-Prozess KW - Auditory perception KW - Acoustical properties KW - Hearing impairment KW - Loudness perception KW - Audiometry KW - Acoustic noise control KW - Spectrograms KW - Acoustic ecology KW - Regression analysis KW - Gaussian processes Y1 - 2023 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-46127 SN - 0001-4966 VL - 153 IS - 5 SP - 2956 EP - 2972 PB - Acoustical Society of America (ASA) ER - TY - JOUR A1 - Brinkmann, Fabian A1 - Aspöck, Lukas A1 - Ackermann, David A1 - Opdam, Rob A1 - Vorländer, Michael A1 - Weinzierl, Stefan T1 - A benchmark for room acoustical simulation. Concept and database JF - Applied Acoustics Y1 - 2021 U6 - https://doi.org/10.1016/j.apacoust.2020.107867 SN - 0003-682X VL - 176 PB - Elsevier ER - TY - JOUR A1 - Weinzierl, Stefan A1 - Lepa, Steffen A1 - Ackermann, David T1 - A measuring instrument for the auditory perception of rooms: The Room Acoustical Quality Inventory (RAQI) JF - The Journal of the Acoustical Society of America N2 - With the Room Acoustical Quality Inventory (RAQI), a measuring instrument for the perceptual space of performance venues for music and speech has been developed. First, a focus group with room acoustical experts determined relevant aspects of room acoustical impression in the form of a comprehensive list of 50 uni- and bipolar items in different categories. Then, n = 190 subjects rated their acoustical impression of 35 binaurally simulated rooms from 2 listening positions, with symphonic orchestra, solo trumpet, and dramatic speech as audio content. Subsequent explorative and confirmative factor analyses of the questionnaire data resulted in three possible solutions with four, six, and nine factors of room acoustical impression. The factor solutions, as well as the related RAQI items, were tested in terms of reliability, validity, and several types of measurement invariance, and were cross-validated by a follow-up experiment with a subsample of 46% of the original participants, which provided re-test reliabilities and stability coefficients for all RAQI constructs. The resulting psychometrically evaluated measurement instrument can be used for room quality assessment, acoustical planning, and the further development of room acoustical parameters in order to predict primary acoustical qualities of venues for music and speech. Y1 - 2018 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-58954 SN - 0001-4966 VL - 144 IS - 3 SP - 1245 EP - 1257 PB - Acoustical Society of America ER - TY - CHAP A1 - Rosenkranz, Andreas A1 - Burgmayer, Ralf A1 - Ackermann, David A1 - Hädrich, Markus A1 - Weinzierl, Stefan ED - Schmidt, Gerhard ED - Nolte, Bodo ED - Heute, Ulrich T1 - A Mobile App for Room Acoustical Measurements T2 - Fortschritte der Akustik – DAGA 2017: 43. Jahrestagung für Akustik Y1 - 2017 UR - https://pub.dega-akustik.de/DAGA_2017/data/articles/000442.pdf SN - 978-3-939296-12-6 SP - 235 EP - 237 PB - Kiel CY - Deutsche Gesellschaft für Akustik e.V. ER - 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 -