On the identification and assessment of underlying acoustic dimensions of soundscapes

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Authors

  • Jakob Bergner
  • Jürgen Peissig
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Details

Original languageEnglish
Article number46
JournalActa Acustica
Volume6
Early online date7 Oct 2022
Publication statusPublished - 2022

Abstract

The concept of soundscapes according to ISO 12913-1/-2/-3 proposes a descriptive framework based on a triangulation between the entities acoustic environment, person and context. While research on the person-related dimensions is well established, there is not yet complete agreement on the relevant indicators and dimensions for the pure description of acoustic environments. Therefore, this work attempts to identify acoustic dimensions that actually vary between different acoustic environments and thus can be used to characterize them. To this end, an exploratory, data-based approach was taken. A database of Ambisonics soundscape recordings (approx. 12.5 h) was first analyzed using a variety of signal-based acoustic indicators (Ni = 326) within the categories loudness, quality, spaciousness and time. Multivariate statistical methods were then applied to identify compound and interpretable acoustic dimensions. The interpretation of the results reveals 8 independent dimensions â Loudnessâ , â Directivityâ , â Timbreâ , â High-Frequency Timbreâ , â Dynamic Rangeâ , â High-Frequency Amplitude Modulationâ , â Loudness Progressionâ and â Mid-High-Frequency Amplitude Modulationâ to be statistically relevant. These derived latent acoustic dimensions explain 48.76% of the observed total variance and form a physical basis for the description of acoustic environments. Although all baseline indicators were selected for perceptual reasons, validation must be done through appropriate listening tests in future.

Keywords

    Multivariate statistics, Soundscape, Statistical signal processing, Underlying acoustic dimensions

ASJC Scopus subject areas

Cite this

On the identification and assessment of underlying acoustic dimensions of soundscapes. / Bergner, Jakob; Peissig, Jürgen.
In: Acta Acustica, Vol. 6, 46, 2022.

Research output: Contribution to journalArticleResearchpeer review

Bergner, J., & Peissig, J. (2022). On the identification and assessment of underlying acoustic dimensions of soundscapes. Acta Acustica, 6, Article 46. Advance online publication. https://doi.org/10.1051/aacus/2022042
Bergner J, Peissig J. On the identification and assessment of underlying acoustic dimensions of soundscapes. Acta Acustica. 2022;6:46. Epub 2022 Oct 7. doi: 10.1051/aacus/2022042
Bergner, Jakob ; Peissig, Jürgen. / On the identification and assessment of underlying acoustic dimensions of soundscapes. In: Acta Acustica. 2022 ; Vol. 6.
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