@inproceedings{HoellerZeitler, author = {H{\"o}ller, Christoph and Zeitler, Berndt}, title = {Playing ball with transients on the force plate and on the reception plate}, series = {Noise control for a better environment. PROCEEDINGS OF INTERNOISE 2019. The 48th International Congress and Exhibition on Noise Control Engineering, June 16-19, Madrid}, booktitle = {Noise control for a better environment. PROCEEDINGS OF INTERNOISE 2019. The 48th International Congress and Exhibition on Noise Control Engineering, June 16-19, Madrid}, publisher = {INTERNATIONAL INSTITUTE OF NOISE CONTROL ENGINEERING}, language = {en} } @inproceedings{HoellerZeitlerSchoenwald, author = {H{\"o}ller, Christoph and Zeitler, Berndt and Schoenwald, Stefan}, title = {Anwendung von Cremers parallelen Platten auf leichte Bauelemente}, series = {Fortschritte der Akustik - DAGA 2017 : 43. Deutsche Jahrestagung f{\"u}r Akustik, 6.-9. M{\"a}rz 2017 in Kiel}, booktitle = {Fortschritte der Akustik - DAGA 2017 : 43. Deutsche Jahrestagung f{\"u}r Akustik, 6.-9. M{\"a}rz 2017 in Kiel}, publisher = {Deutsche Gesellschaft f{\"u}r Akustik e.V.}, pages = {521 -- 524}, language = {de} } @inproceedings{ZeitlerHoellerReinhold, author = {Zeitler, Berndt and Hoeller, Christoph and Reinhold, Steffi}, title = {Maximum Fast time-weighted levels - When can a transient be seen as a Dirac impulse?}, series = {Internoise 2023, 20-23 August 2023, Chiba, Greater Tokyo}, booktitle = {Internoise 2023, 20-23 August 2023, Chiba, Greater Tokyo}, abstract = {It is common practice to use maximum FAST time-weighted sound pressure levels to assess transient impact noise, as these levels correlate well with human perception of impact noise. Maximum FAST time-weighted levels are known to be dependent on the reverberation time of the receiving room. In previous studies, an analytical correction term was developed using a Dirac impulse. The correction term is used to calculate the maximum FAST time-weighted levels from peak sound pressure levels. Peak levels are independent of the reverberation time of the room. Applying the correction term makes it possible to compare measurement results from different rooms. The correction term has been validated in several studies for the standard rubber impact ball. In this paper, the influence of the source signal (Dirac impulse) on the correction term is studied. Analytical and numerical models are employed to investigate the consequences of stretching the impulse in time and of changing its shape. The results are compared with empirical solutions developed in other studies.}, language = {en} } @techreport{HoellerZeitlerSabourin, author = {H{\"o}ller, Christoph and Zeitler, Berndt and Sabourin, Ivan}, title = {Airborne and impact sound insulation data for cold-formed steel-framed walls and floors}, publisher = {National Research Council of Canada. Construction}, doi = {10.4224/23002823}, abstract = {This report presents the results of an extensive series of direct sound insulation tests of cold-formed steel-framed walls and floors. The direct airborne sound insulation of 30 walls with cold-formed steel framing was measured in accordance with ASTM E90-09. The walls had steel studs with a depth of 92 mm (3-5/8") or 152 mm (6"), and with a steel thickness of 1.09 mm (0.043") or 1.37 mm (0.054"). Other parameters that were investigated included the number of layers and thickness of gypsum board, the cavity insulation, the stud spacing, and the use of resilient channels. The test results for some non-standard wall configurations that were tested for research purposes (e.g. for walls with gypsum board on one side only) are also included in this report. The direct airborne and impact sound insulation of 17 floors with cold-formed steel framing was measured in accordance with ASTM E90-09 and ASTM E492-09, respectively. The floors had steel joists with a depth of 254 mm (10") or 317 mm (12.5"), and with a steel thickness of 1.37 mm (0.054"). The top surface of the floor/ceiling assemblies was composed of a corrugated steel deck with poured gypsum concrete, while the bottom surface was composed of a gypsum board ceiling on resilient channels. The influence of the joist depth and the number of layers and thickness of the ceiling gypsum board was investigated, as well as the influence of several floor coverings (e.g. laminate or carpet). The report presents the detailed specimen descriptions and specimen properties and the results from the standardized tests according to ASTM E90-09 and ASTM E492-09. Brief analyses of the parameters affecting the sound insulation of the steel-framed assemblies are provided. The tests presented in this report were part of a large research study that also included an investigation into the flanking sound transmission in cold-formed steel-framed buildings. The results of that study are described in the NRC Research Report RR-337, "Apparent Sound Insulation in Cold-Formed Steel-Framed Buildings" [1]. The NRC Research Report RR-337 also includes some of the airborne sound insulation results presented here, albeit without listing the detailed specimen descriptions and specimen properties that are provided in this report.}, language = {en} } @techreport{HoellerMahnQuirtetal., author = {H{\"o}ller, Christoph and Mahn, Jeffrey and Quirt, David and Schoenwald, Stefan and Zeitler, Berndt}, title = {Apparent sound insulation in cross-laminated timber buildings}, publisher = {National Research Council of Canada. Construction}, doi = {10.4224/23002009}, pages = {116}, abstract = {This Report presents the results from experimental studies of airborne sound transmission, together with an explanation of calculation procedures to predict the apparent airborne sound transmission between adjacent spaces in a building whose construction is based on cross-laminated timber (CLT) panels. There are several types of CLT constructions which are commercially available in Canada, but this study only focused on CLT panels that have adhesive between the faces of the timber elements in adjacent layers, but no adhesive bonding the adjacent timber elements within a given layer. There were noticeable gaps (up to 3 mm wide) between some of the timber elements comprising each layer of the CLT assembly. These CLT panels could be called "Face-Laminated CLT Panels" but are simply referred to as CLT panels in this Report. Another form of CLT panels has adhesive between the faces of the timber elements in adjacent layers as well as adhesive to bond the adjacent timber elements within a given layer. These are referred to as "Fully-Bonded CLT Panels" in this Report. Because fully-bonded CLT panels have different properties than face-laminated CLT panels, the sound transmission data and predictions in this Report do not apply to fully-bonded CLT panels.}, language = {en} } @techreport{HoellerQuirtZeitleretal., author = {H{\"o}ller, Christoph and Quirt, David and Zeitler, Berndt and Sabourin, Ivan}, title = {Apparent sound insulation in cold-formed steel-framed buildings}, publisher = {National Research Council of Canada. Construction}, doi = {10.4224/23001843}, abstract = {This Report presents the results from substantial experimental studies of sound transmission, together with an explanation of calculation procedures to predict the sound transmission between adjacent spaces in a building whose walls and floors have cold-formed steel (CFS) framing. This first edition contains mainly data for loadbearing steel framing formed from sheet steel with thickness from 1.37 mm (16 gauge) to 0.94 mm (20 gauge). Non-loadbearing CFS studs formed from thinner steel (nominally 0.54 mm) are also commonly used but these are not included in the data tables for sound transmission through wall assemblies in this Report.}, language = {en} } @inproceedings{HoellerZeitler, author = {H{\"o}ller, Christoph and Zeitler, Berndt}, title = {Laboratory study on flanking sound transmission in cold-formed steel-framed constructions}, series = {Towards a quieter future : 45th International Congress and Exposition on Noise Control Engineering (Internoise 2016) : Hamburg, Germany, 21-24 August 2016, Vol 8}, booktitle = {Towards a quieter future : 45th International Congress and Exposition on Noise Control Engineering (Internoise 2016) : Hamburg, Germany, 21-24 August 2016, Vol 8}, publisher = {Curran Associates Inc.}, pages = {6238 -- 6249}, abstract = {In a recent study at the National Research Council Canada, the sound transmission in cold-formed steel-framed constructions was investigated. The results of direct sound insulation tests of wall and floor assemblies were reported at EURONOISE 2015 and INTERNOISE 2015. This paper focuses on flanking sound transmission in cold-formed steel-framed constructions. A representative full-scale mock-up specimen was constructed in NRC's 8-room flanking transmission facility. The specimen consists of four loadbearing walls with 152 mm deep steel studs, four non-loadbearing walls with 92mm deep steel studs, and four floor-ceiling assemblies consisting of steel joists and a composite steel deck with gypsum concrete. Measurements were conducted according to the indirect method described in ISO 10848. The individual flanking paths were measured by a sequence of transmission loss measurements in which other transmission paths were suppressed by shielding. For the bare specimen without linings, the sound transmission for horizontally adjacent rooms with continuous subfloors is dominated by the floor-floor flanking paths. Floor coverings or floor toppings are needed to meet the requirements in the National Building Code of Canada. This paper presents details of the measurements, highlights some of the results and discusses implications.}, language = {en} } @inproceedings{HoellerZeitlerMahn, author = {H{\"o}ller, Christoph and Zeitler, Berndt and Mahn, Jeffrey}, title = {Direct sound transmission loss of heavy gauge steel stud walls}, series = {Proceedings of Euronoise 2015 : 10th European Congress and Exposition on Noise Control Engineering : Maastricht, 31 May - 3 June 2015}, booktitle = {Proceedings of Euronoise 2015 : 10th European Congress and Exposition on Noise Control Engineering : Maastricht, 31 May - 3 June 2015}, address = {Maastricht}, pages = {1121 -- 1126}, language = {en} } @inproceedings{ZeitlerHoellerMahn, author = {Zeitler, Berndt and H{\"o}ller, Christoph and Mahn, Jeffrey}, title = {Empirical model of direct sound transmission through lightweight wood-framed construction}, series = {Implementing noise control technology : 44th International Congress and Exposition on Noise Control Engineering (Internoise 2015) : San Francisco, California, USA, 9 - 12 August 2015}, booktitle = {Implementing noise control technology : 44th International Congress and Exposition on Noise Control Engineering (Internoise 2015) : San Francisco, California, USA, 9 - 12 August 2015}, publisher = {Curran}, address = {Red Hook, NY}, abstract = {Tools to predict sound transmission through building elements are beneficial from both amarketing and a research standpoint. Prediction models can assist with the optimization ofelement performance and often reduce both cost and time in projects. However, the morephysical phenomena are to be included in the model, the more input data that is needed,which in some cases can be quite time-consuming and costly to collect. A balance is neededbetween the input and modeling effort and the output, which is usually delivered in onethird octave frequency bands or single number ratings. Many different types of models arecommonly used, including analytical, numerical, and empirical are used, all of which haveadvantages and disadvantages. In this paper, the latter type is presented using a set ofphysical properties of lightweight wood elements, and the errors made in the prediction arequantified. The disadvantage of empirical compared to analytical modeling is that thephysical phenomena are more difficult to identify. The advantage is often the simplicityand accuracy of the prediction results.}, language = {en} } @inproceedings{ZeitlerMahnSabourinetal., author = {Zeitler, Berndt and Mahn, Jeffrey and Sabourin, Ivan and H{\"o}ller, Christoph and Schoenwald, Stefan}, title = {Apparent airborne sound insulation of hybrid wood-concrete masonry assemblies}, series = {Euronoise 2015 : 10th European Congress and Exposition on Noise Control Engineering : Maastricht, 31 May - 3 June 2015}, booktitle = {Euronoise 2015 : 10th European Congress and Exposition on Noise Control Engineering : Maastricht, 31 May - 3 June 2015}, address = {Maastricht}, organization = {Belgian Acoustical Association (ABAV), Acoustical Society of the Netherlands (NAG), European Acoustics Association (EAA)}, pages = {2515 -- 2520}, abstract = {As part of a research project to develop design solutions for concrete-masonry buildings for the Canadian market, the apparent sound insulation performance of hybrid assemblies with concrete masonry walls and wood joist floors was evaluated. In this paper, the effect of junction coupling is investigated in an ISO 15712 flanking prediction context. Airborne flanking path data predicted according to ISO 15712 are compared to data measured using the indirect ISO 10848 shielding method. Recommendations are made on how appropriate the application of ISO 15712 is for this type of hybrid assembly.}, language = {en} } @inproceedings{RiegerDaeubleSchecketal., author = {Rieger, Anna and D{\"a}uble, Lukas and Scheck, Jochen and Zeitler, Berndt and H{\"o}ller, Christoph}, title = {Experimental study on using transient excitation signals in the prediction of sound pressure levels from building services according to EN 12354-5 and EN 15657}, series = {Proceedings of DAS|DAGA 2025, 51st Annual Meeting on Acoustics, March 17-20, 2025, Copenhagen}, booktitle = {Proceedings of DAS|DAGA 2025, 51st Annual Meeting on Acoustics, March 17-20, 2025, Copenhagen}, address = {Berlin}, organization = {Deutsche Gesellschaft f{\"u}r Akustik e.V. (DEGA), Berlin}, isbn = {978-3-939296-23-2}, doi = {10.71568/dasdaga2025.526}, pages = {372 -- 375}, abstract = {EN 12354-5:2023 describes a calculation procedure to predict the sound pressure levels from building service equipment. The procedure uses the blocked force of the source as input data. This quantity can be determined using the reception plate method according to EN 15657:2017. The methods have been developed and validated for stationary excitation signals (Leq). Real structure-borne sound sources often have time-varying excitation signals. In addition, the requirements for sound insulation against noise from building service equipment in Germany (DIN 4109) are given in terms of the maximum, time-weighted sound pressure level (LFmax). This contribution investigates the suitability of the methods described in EN 12354-5 and EN 15657 for structure-borne sound sources with transient excitation signals. A measurement series with time signals ranging from stationary to highly transient was conducted in a building-like laboratory. The reverberation time of the receiving room was adjusted to three different values. The calculations were processed using Leq values, LFmax values and short-time Leq values. The results show the uncertainties that can arise in the prediction of signals with varying transient characteristics compared to stationary excitation signals.}, language = {en} }