Acoustic comfort of workspace environments is deeply dependent on the balance between indoor background noises. For example, colleagues’ speaking might aect task performances by downgrading privacy and productivity. Conversely, HVAC noise can reduce the employee’s distraction since such continuous mechanical noise is detrimental to speech comprehension. Therefore, in the analysis of workspaces’ acoustic comfort, dierent background noise sources identification becomes essential. In this regard, machine learning techniques are resourceful for clustering sound pressure level patterns among the unlabeled data. A previous work by the authors provided reliable results on separating noise sources via Gaussian Mixture Model and K-means clustering. Nevertheless, such method was applied to a single workspace, and thus it needs further investigation on a wider sample of environments. For this reason, in the present work long-term monitoring was carried out in various active workspaces extending previous results and confirming the procedure’s robustness. Moreover, simulations of the acoustic conditions by summing up the human activity contribution to the mechanical noise allowed obtaining more reliable speech intelligibility criteria at the workstations. Refining the numerical models’ setup through background noise levels obtained through machine learning analysis enhances the assessment of workers’ privacy conditions in realistic scenarios.

De Salvio, D., Fratoni, G., D'Orazio, D., Garai, M. (2022). Assessing human activity noise in workspaces using machine learning and numerical models. Wakefiled : The Institute of Noise Control Engineering of the USA [10.3397/IN_2022_0767].

Assessing human activity noise in workspaces using machine learning and numerical models

De Salvio, Domenico
Primo
;
Fratoni, Giulia
Secondo
;
D'Orazio, Dario
Penultimo
;
Garai, Massimo
Ultimo
2022

Abstract

Acoustic comfort of workspace environments is deeply dependent on the balance between indoor background noises. For example, colleagues’ speaking might a ect task performances by downgrading privacy and productivity. Conversely, HVAC noise can reduce the employee’s distraction since such continuous mechanical noise is detrimental to speech comprehension. Therefore, in the analysis of workspaces’ acoustic comfort, di erent background noise sources identification becomes essential. In this regard, machine learning techniques are resourceful for clustering sound pressure level patterns among the unlabeled data. A previous work by the authors provided reliable results on separating noise sources via Gaussian Mixture Model and K-means clustering. Nevertheless, such method was applied to a single workspace, and thus it needs further investigation on a wider sample of environments. For this reason, in the present work long-term monitoring was carried out in various active workspaces extending previous results and confirming the procedure’s robustness. Moreover, simulations of the acoustic conditions by summing up the human activity contribution to the mechanical noise allowed obtaining more reliable speech intelligibility criteria at the workstations. Refining the numerical models’ setup through background noise levels obtained through machine learning analysis enhances the assessment of workers’ privacy conditions in realistic scenarios.
2022
Proceding of Inter-Noise 2022
5259
5269
De Salvio, D., Fratoni, G., D'Orazio, D., Garai, M. (2022). Assessing human activity noise in workspaces using machine learning and numerical models. Wakefiled : The Institute of Noise Control Engineering of the USA [10.3397/IN_2022_0767].
De Salvio, Domenico; Fratoni, Giulia; D'Orazio, Dario; Garai, Massimo
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/916390
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