On the suitability of ISO 16717-1 reference spectra for rating airborne sound insulation

Mašović, Draško; Pavlovic, Dragana Sumarac; Mijic, Miomir

doi:10.1121/1.4824629

Cited by 15 publications

(17 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The preliminary study, although having a relatively small number of participants (i.e., nine subjects), demonstrated that when using a broadband noise type signal such as pink, white, or grey noise as a test signal compared to a music sound source, the subjectively estimated sound insulation was judged differently. This result confirms previous findings [10,35].…”

Section: Signal Descriptionsupporting

confidence: 83%

See 1 more Smart Citation

Airborne sound insulation in terms of a loudness model

Neubauer

Kang

2014

Applied Acoustics

View full text Add to dashboard Cite

A B S T R A C TOne of the main goals of building acoustics is the prediction of airborne sound insulation between rooms to determine the quality of sound protection. In many practical cases, however, the objective measures of the airborne sound insulation using procedures in standards are not in agreement with the subjective assessment. This paper, therefore, after reviewing the conventional model to calculate airborne sound insulation, introduces a calculation scheme based on loudness level linked with specific fluctuation strength, yielding a weighted normalised loudness level difference, L nor,w . By analysing the difference between standard airborne sound insulation values and the introduced weighted normalised loudness level difference, it is revealed that the sound pressure level that is transmitted through a partition decreases with increasing frequency, and this is independent of the type of signal and of the airborne sound insulation values (R' w -values), whereas if the transmitted signal is converted into a loudness level, it tends to rise with increasing frequency. Moreover, it is found that, whereas a simple level difference does not exhibit the effect of a given signal to the frequency-dependent airborne sound insulation curve, using L nor,w , a significant change can be observed, in terms of both computed and measured results. Furthermore, the frequency-dependent results allow more details to be investigated for a certain sound insulation. A comparison between the measured and predicted airborne sound insulation with no obvious malfunction suggests that at some frequency ranges, a hypothetical subjective related failure might occur. Overall, the proposed L nor,w could reveal detailed insights into the in situ measured airborne sound insulation compared with standard airborne sound insulation values. The frequency-dependent values discussed in this paper form a basis for developing a single-number index.

show abstract

Section: Signal Descriptionsupporting

confidence: 83%

“…Recently, a replacement for ISO 717-1, designated as ISO 16717-1 [7], has been proposed [8], which includes changes to the frequency range included in the single number ratings [9,10]. However, no evaluation has been introduced into the proposed new standard that classifies hearing sensation.…”

Section: Introductionmentioning

confidence: 99%

Airborne sound insulation in terms of a loudness model

Neubauer

Kang

2014

Applied Acoustics

View full text Add to dashboard Cite

show abstract

“…On this topic, Masovic et al [36] made a study on the suitability of ISO CD 16717-1 [37] reference spectra for rating airborne sound insulation. The ISO CD 16717-1 [37] "living" and "traffic" spectra correspond to the reference spectra C (50-5000 Hz) and C tr (50-5000 Hz) of ISO 717-1 [35], respectively.…”

Section: Single Number Quantities Analysismentioning

confidence: 99%

Uncertainty of facade sound insulation by a Round Robin Test. Evaluations of low-frequency procedure and single numbers

Scrosati

Scamoni

Prato

et al. 2016

Building and Environment

View full text Add to dashboard Cite

The international standard ISO 140-5 for the measurement of the sound insulation of building facades has been recently replaced by the new standard ISO 16283-3. The revised standard includes the procedure for measurements at low frequencies down to 50 Hz. The uncertainty of facade sound insulation, in particular at low frequencies, was evaluated by a Round Robin Test, conducted in a full-scale experimental building at the Construction Technologies Institute of the National Research Council of Italy (ITC-CNR). Each of the 10 teams involved in the RRT replicated the tests 5 times, for a total of 50 measurements. The different measurement positions inside the receiving room were compared. In particular, all the teams involved in the RRT followed the low-frequency procedure, assessing corner and center room positions; the energy average values according to ISO 16283-3 were considered and the relative uncertainty, in terms of repeatability and in situ reproducibility standard deviations, was compared with the ones measured and calculated following the default measurement procedure. It was found that the uncertainty of the low-frequency procedure is higher than that of the default procedure. This would suggest the need to investigate further the reliability of the low-frequency procedure. At high frequency, the significant uncertainty values found are probably caused by the loudspeakers directivity and position; this aspect need to be investigated in greater detail, as well

show abstract

“…On this topic, Masovic et al [32] made a study on the suitability of ISO CD 16717-1 [25] reference spectra for rating airborne sound insulation. The ISO CD 16717-1 [25] spectra living and traffic correspond to the reference spectra C (50-5000 Hz) and Ctr (50-5000 Hz) of ISO 717-1 [21], respectively.…”

Section: Façade Sound Insulationmentioning

confidence: 99%

“…The ISO CD 16717-1 [25] spectra living and traffic correspond to the reference spectra C (50-5000 Hz) and Ctr (50-5000 Hz) of ISO 717-1 [21], respectively. Masovic et al [32] demonstrated, with an extensive noise monitoring in a number of dwellings recordings of 38 potentially disturbing activities, that the reference spectrum for living noise (Lliving), should be redefined to better match the typical spectrum of noise in dwellings because it seems to be rather high at lower frequencies, especially below 100 Hz. Moreover, in the case of noise generated by sources of music with strong bass content the reference spectrum for traffic noise (Ltraffic) seems to be more appropriate above 100 Hz than Lliving.…”

Section: Façade Sound Insulationmentioning

confidence: 99%

Managing Measurement Uncertainty in Building Acoustics

Scrosati

Scamoni

2015

Buildings

View full text Add to dashboard Cite

In general, uncertainties should preferably be determined following the principles laid down in ISO/IEC Guide 98-3, the Guide to the expression of uncertainty in measurement (GUM:1995). According to current knowledge, it seems impossible to formulate these models for the different quantities in building acoustics. Therefore, the concepts of repeatability and reproducibility are necessary to determine the uncertainty of building acoustics measurements. This study shows the uncertainty of field measurements of a lightweight wall, a heavyweight floor, a façade with a single glazing window and a façade with double glazing window that were analyzed by a Round Robin Test (RRT), conducted in a full-scale experimental building at ITC-CNR (Construction Technologies Institute of the National Research Council of Italy). The single number quantities and their uncertainties were evaluated in both narrow and enlarged range and it was shown that including or excluding the low frequencies leads to very significant differences, except in the case of the sound insulation of façades with single glazing window. The results obtained in these RRTs were compared with other results from literature, which confirm the increase of the uncertainty of single number quantities due to the low frequencies extension. Having stated the measurement uncertainty for a single measurement, in building acoustics, it is also very important to deal with sampling for the purposes of classification of buildings or building units. Therefore, this study also shows an application of the sampling included in the Italian Standard on the acoustic classification of building units on a serial type building consisting of 47 building units. It was found that the greatest variability is observed in the façade and it depends on both the great variability of window's typologies and on workmanship. Finally, it is suggested how to manage the uncertainty in building acoustics, both for one single

show abstract

On the suitability of ISO 16717-1 reference spectra for rating airborne sound insulation

Cited by 15 publications

References 6 publications

Airborne sound insulation in terms of a loudness model

Airborne sound insulation in terms of a loudness model

Uncertainty of facade sound insulation by a Round Robin Test. Evaluations of low-frequency procedure and single numbers

Managing Measurement Uncertainty in Building Acoustics

Contact Info

Product

Resources

About