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Open research questions in Noise Effects and Management

47 unresolved questions extracted from the limitations and future-work sections of 869 Noise Effects and Management papers in our library. Each links back to the study that raised it.

What the literature leaves open

  • Future studies should focus on specific industrial sectors and incorporate a broader range of risk factors to better understand the determinants of hearing loss. A limitation of this study lack of detailed provincial-level characteristics, which restricts the analysis to two primary indicators (SEV and DALYs).

    Prevalence and Association Between Occupational Noise Exposure and Hearing Loss Among Workers in Indonesia · 2026 · DOI

  • Future work should focus on expanding the scope of noise mapping to cover broader urban areas and applying this methodology to a larger number of cities to generalize 332 Acoust. Several limitations of this study must be acknowledged. First, the noise estimation was limited to areas within 200 m of major roads due to the coverage of the Road Traffic Census data, potentially excluding residents ex- posed to noise from minor roads.

    Health impact assessment of road traffic noise in two Japanese cities: A scenario study on annoyance and ischaemic heart disease based on noise maps · 2026 · DOI

  • 0pt"><span style="background:windowtext"><span style="line-height:150%"><span style="background-color:#ffffff;">In situations where silence is insufficient - such as open-plan offices, shared workspaces, or home environments -there is a growing need to implement solutions that address the demand for quieter conditions.

    NOISE AS A DISTRACTION TO EFFECTIVE WORK: A REVIEW OF SOLUTIONS SUPPORTING ACOUSTIC COMFORT IN WORK ENVIRONMENTS · 2026 · DOI

  • This study exclusively focused on indoor noise levels within the selected nightclubs during peak operational hours. External noise exposure, sound leakage, and potential impacts on neighboring communities were not evaluated. Consequently, the findings cannot be generalized to assess community-wide noise pollution or its health implications for residents outside the venues. Secondly, the measurements were conducted during peak hours over a limited period of five weekends, which may not fully capture variations in noise levels across different days, seasons, or special events. Future investigations should include external and long-term seasonal noise measurements, and community-based assessments to provide a comprehensive understanding of the environmental impact of nightclub noise pollution. Despite these limitations, the findings provide valuable insights into noise pollution levels in Waterloo’s nightclubs and underscore the need for ongoing monitoring and regulation. Abu et al.

    Assessment of noise pollution levels in nightclubs in Waterloo Sierra Leone and implications for public health · 2026 · DOI

  • certain of Second, the economic analysis was performed using current cost indices and assumed material lifespans derived from literature and technical documentation. Variability in inflation rates, market prices, or maintenance regimes could influence the long-term financial outcomes. Third, aesthetic and social perception analyses were limited to expert-based assessments and GIS visualisations. Incorporating participatory evaluation or public perception surveys could enhance the social robustness of future design concepts. Finally, the study’s scope was geographically limited to a single Slovak transport corridor. While the methodology is generalisable, its direct application in other climatic or regulatory contexts should be preceded by regional calibration.

    Integrated Multi-Criteria Optimization Of Road Traffic Noise · 2026 · DOI

  • Given the heightened sensory sensitivity that characterizes fibromyalgia syndrome, everyday acoustic environments may represent a relevant yet understudied environmental determinant of chronic pain.

    The impact of everyday acoustic environments on chronic pain mechanisms in fibromyalgia: a randomized, triple-blind, placebo-controlled 4 × 4 crossover trial · 2026 · DOI

  • As an instrument and interface to the urban surroundings, BIKES enabled situated urban practices and differentiated modes of sonic interaction across multiple contexts. Through route plan- ning and tailored sonic interventions, the activation remained closely connected to the affordances of the city, revealing shifts between individual, collective, and environmental modes of lis- tening. This approach can be translated to other cities and urban environments. While the technology requires improvements for long-term durability, it did not hinder the activities during the ride. A next- phase prototype has been designed [2] and may be fabricated in the near future, while the current iteration remains suitable for continued exploration. We are currently integrating UWB distance tracking and geolocation capabilities to incorporate the relative positions of the bikes into future compositions and interaction concepts. Future work will focus on the systematic exploration of acous- tic strategies that leverage the distributed and moving nature of the instrument. This includes reverberation patterns of urban structures, Doppler effects, latency-related phenomena, and other spatial-temporal characteristics of sound in motion.

    Sonic Interactions as Situated Urban Practice with BIKES · 2026 · DOI

  • The findings suggest that this comprehensive approach is essential for fully understanding the sound environment of a place, as sound pressure levels alone are insufficient to explain acoustic perception, since the type and characteristics of sound sources significantly affect how environments with similar LAeq values are experienced.

    Soundscape analysis in urban areas of high heritage value – The case study of Coimbra · 2026 · DOI

  • • Residents should seek noiseless alternative power sources (e.g solar power system). • New layouts (or Estates) in area where there is poor electricity supply should include noiseless alternative power supply in the plan. • Alternative power source like solar power system is cheaper than running diesel/petrol generator and those exposed must consider this alternative. • Residents should consider buying ecotech noiseless generator.

    SURVEY OF NOISE DISTRIBUTION LEVEL IN IDAH LOCAL GOVERNMENT AREA, KOGI STATE NIGERIA · 2026 · DOI

  • One of the major strengths of this study is the demonstration that models solely based on readily available LUT information represent a promising approach for predicting selected AE properties (here, LAeq and Link Density). Once the necessary LUT features are calculated and the model is built, this enables a fast application for predicting the respective AE properties on high spatial resolution. For example, Fig. 3 represents the application of the SALVEAll model to predict the LAeq and the Link Density for the research area of three cities (~450 km2). The calculation of LUT features took approximately 48 h, while the computation time for predicting each of the respective indices took less than 10 s on a standard office PC (using an 11th Gen Intel(R) Core(TM) i9-11900K at 3.50 GHz and 64 GB of RAM with no parallelization). In theory, these models can easily be applied to predict further acoustic properties of interest. Additional strengths are that we compare our results to the performance of the SNM using a comprehensive dataset of acoustic measurements across the city of Bochum from the SALVE project, as well as the model evaluation, using two independent test datasets. this study comprise the already information, which might be mentioned neglected temporal especially important to predict frequency-related AE properties. In addition, we only focus on the daytime AE, as measurements are only available between 09:00 and 19:30. As the night-time AE plays an important role for health-related issues like sleep, our models may not be suitable for accurately estimating exposure levels during this In addition, although two independent datasets were used for the evaluation of the model performance, the Be-MoVe dataset only comprises 22 recording locations. Another important limitation is that the model is only based on the relations between LUTs in the surroundings of acoustic measurements in Bochum; thus, potentially important LUTs (e.g., airports) are not considered in predicting AE properties. Therefore, additional studies of larger sample sizes and from different cities are needed to prove the scalability of LUT-based approaches—especially for the prediction of acoustic indices limitations of time frame. However, beyond noise. Methodologically, we use a gradient boosting model, whose predictions are bound between the minimum and maximum values provided in the training data. While for indices like the Link Density or the Articulation Index, the empirical measures are close to the theoretical bandwidth, the model will fail with predictions for locations with higher or lower values for the other indices. Furthermore, although we performed sensitivity analysis using extreme gradient boosting without observing performance improvements, other models may outperform gradient boosting in the future.

    Modelling the urban acoustic environment using land use-based gradient boosting · 2026 · DOI

  • In this work, we demonstrate the predictive power of solely LUTbased models to estimate properties of the urban AE at high spatial resolution. As the model for the LAeq outperforms the SNM in predicting total environmental noise and similar performance was found throughout the literature, it represents a promising approach in estimating total environmental noise at high spatial resolution. Although the predictive power for the Link Density model was lower than that of the LAeq model, its results were also robust across datasets. Our results are particularly important for epidemiological studies, as the models offer fast, large-scale estimates, using readily available information. In the future, these models could be used to estimate exposure to AE properties, which can then be analysed in relation to human health, enabling the investigation of associations already observed in laboratory and field studies within population-based research. From a spatial planning perspective, processes that redefine or update land use mapping can leverage our model to account for the impacts on the acoustic environment. While planning measures aimed at altering existing land use types are often gradual and spatially constrained, structural transformations like the repurposing and qualification of former industrial brownfield sites create strategic opportunities for targeted redefinitions of land use. Furthermore, future work should investigate whether the inclusion of temporal information along with available environmental data (e.g., satellite imagery) will enhance the predictive power. DATA AVAILABILITY The datasets generated during and/or analysed during the current study are available from the corresponding author on reasonable request. REFERENCES 1. European Environment Agency. Environmental noise in Europe—2025. Luxembourg: Publications Offi ce of theEuropean Union, 2025. 2. DIN ISO 12913-1:2018-02. Acoustics—Soundscape—Part 1: definition and conceptual framework (ISO 12913-1:2014). Journal of Exposure Science & Environmental Epidemiology 3. Schulte-Fortkamp B, Fiebig A, Sisneros JA, Popper AN, Fay RR. Soundscapes: humans and their acoustic environment. Springer International Publishing: Cham, Switzerland. 29. Haselhoff T, Lawrence B, Hornberg J, Ahmed S, Sutcliffe R, Gruehn D, et al. The Acoustic quality and health in urban environments (SALVE) project: Study design, rationale and methodology. Appl Acoust. 2022;188:108538. T. Haselhoff et al. 9 4. Medvedev O, Shepherd D, Hautus MJ. The restorative potential of soundscapes: a physiological investigation. Appl Acoust. 2015;96:20–6. 5. Annerstedt M, Jönsson P, Wallergård M, Johansson G, Karlson B, Grahn P, et al. Inducing physiological stress recovery with sounds of nature in a virtual reality forest—results from a pilot study. Physiol Behav. 2013;118:240–50. 6. Stobbe E, Forlim CG, Kühn S.

    Modelling the urban acoustic environment using land use-based gradient boosting · 2026 · DOI

  • Recall biases could occur among participants with abnormal audiograms, and some workers could have forgotten about health effects of occupational noise exposure, leading to underreporting of symptoms.

    Risk Assessment of Noise-induced Hearing Loss Among Workers with Occupational Noise Exposure in University Hospitals · 2025 · DOI

  • Combining extended high-frequency audiometry and ABR amplitude measurements should be evaluated as a precursor to impending audibility declines and as an early warning of hair cell damage and loss across diverse populations.

    ASSESSMENT OF HIDDEN HEARING LOSS IN NOISE EXPOSED WORKERS · 2022 · DOI

  • If threshold elevation and OHC loss in humans are preceded by synaptic loss, clinical decision-making and occupational health monitoring procedures would need to be updated in order to preserve hearing function and identify early deterioration.

    ASSESSMENT OF HIDDEN HEARING LOSS IN NOISE EXPOSED WORKERS · 2022 · DOI

  • Several studies, especially those focused on testing younger individuals (those under the age of 35), failed to prove neither the anticipated diminished wave I amplitude with noise exposure nor the elevated high frequency thresholds.

    ASSESSMENT OF HIDDEN HEARING LOSS IN NOISE EXPOSED WORKERS · 2022 · DOI

  • In view of the limited number of studies, small sample sizes, and lack of replication studies, all studies give the impression of being pilot studies on the academic benefits of wearing NC headphones.

    Academic benefits of wearing noise-cancelling headphones during class for typically developing students and students with special needs: A scoping review · 2021 · DOI

  • Little is known about the acoustic characteristics of contemporary general education classrooms that include CHH compared to classrooms of typical peers.

    Use of an Application to Verify Classroom Acoustic Recommendations for Children Who Are Hard of Hearing in a General Education Setting · 2019 · DOI

  • INTRODUCTION AND OBJECTIVES: Although exposure to audible noise has been examined in many publications, the sources of infrasound in agriculture have not been fully examined and presented.

    Exposure to infrasonic noise in agriculture · 2017 · DOI

  • Although we can conclude that noise exposure can contribute to the prevalence of cardiovascular disease, the evidence for a relation between noise exposure and ischemic heart disease is still inconclusive because of the limitations in exposure characterization, adjustment for important confounders, and the occurrence of publication bias.

    The association between noise exposure and blood pressure and ischemic heart disease: a meta-analysis. · 2002 · DOI

  • Moreover, relationships using descriptors other than DNL and percentage highly annoyed, which are presented here, have not been established earlier on the basis of a large dataset.

    Annoyance from transportation noise: relationships with exposure metrics DNL and DENL and their confidence intervals. · 2001 · DOI

  • Future studies are warranted along the lines of environmental injustice of noise pollution and socioeconomic consequences in less developed countries when the data become more available.

    Noise Pollution and Household Sustainability: An Economic Approach · 2026

  • Future research should focus on: o Expanding the model to include real-time traffic acoustic monitoring and climate-sensitive variables, o Incorporating stakeholder engagement in the evaluation of visual and social…

    Integrated Multi-Criteria Optimization Of Road Traffic Noise · 2026 · DOI

  • In the context of architectural design in our country, the acoustic requirements for spaces intended primarily for speech remain insufficiently integrated into standard design practices, despite their widespread application in numerous public buildings.

    Acoustics of speech rooms · 2026 · DOI

  • Future research should focus on the associations of transportation noise with depression and anxiety; and should incorporate an inequality perspective to better understand the distribution of these associations and address population health disparities.

    The association between transportation noise exposure and mental health outcomes in children and adolescents in High Income Countries: A systematic umbrella review · 2026 · DOI

  • Some departments had small sample sizes, which might not accurately represent their actual risk, and further studies should include a larger sample size and validate other settings to improve the accuracy of the risk matrix screening tool.

    Risk Assessment of Noise-induced Hearing Loss Among Workers with Occupational Noise Exposure in University Hospitals · 2025 · DOI

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47 open questions have been extracted from the limitations and future-work passages of 869 Noise Effects and Management papers in our library. Each one below links back to the study that raised it, so you can read the original claim in context.

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