Yang, Tingting;
(2022)
Acoustics of Sequential Spaces.
Doctoral thesis (Ph.D), UCL (University College London).
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Abstract
“Sequential spaces” are spatial systems comprising multiple spaces in sequence connected by openings, common in public spaces with crowd transit (e.g., museums, shopping malls, and transportation hubs). Related to sound diffraction and insulation, this thesis aims to achieve a minor breakthrough in architectural acoustics through establishing disciplines, not focusing on a single or performance space, but targeting large-scale buildings with a listener in motion. The necessity of applying good practice in asymmetric dynamic auditory perception between approaching and receding sound sources, and inconsistent sound attenuation with distance for separating partitions of same construction is demonstrated by subjective and objective outcomes through real and virtual acoustics. The first stage observes dynamic auditory perception of noise as a stationary primary sound source in a museum. The asymmetry of the loudness and listener envelopment between approaching and receding sources occurs with broadband noise. Perceptual priority increases with a rising level. The second stage confirms sound attenuation with distance in accordance with the needs of users (connected room volume, individual room volume, source position, and room absorption) in practice. As connected room volume increases, average sound pressure level is remained for rooms originally connected, while reverberation time generally decreases. The level difference between source and first receiving room is magnified to 1.5 times the sequential one. The third stage explores sound attenuation with distance when parameters of contextual (opening dimension and position, number of rooms), acoustic (absorption coefficient and distribution) and source (directional radiation from the opening and an additional source) factors are efficient in predictions based on finite element method. The final stage examines dynamic auditory perception of voice and music with or without background noise through a validated reproduction of virtual environment. Three perceptual distinctions emerge between approaching or receding sound sources and are defined as approach, plummet, and convergence effect.
| Type: | Thesis (Doctoral) |
|---|---|
| Qualification: | Ph.D |
| Title: | Acoustics of Sequential Spaces |
| Open access status: | An open access version is available from UCL Discovery |
| Language: | English |
| Additional information: | Copyright © The Author 2022. Original content in this thesis is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) Licence (https://creativecommons.org/licenses/by-nc/4.0/). Any third-party copyright material present remains the property of its respective owner(s) and is licensed under its existing terms. Access may initially be restricted at the author's request. |
| Keywords: | architectural acoustics |
| UCL classification: | UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of the Built Environment UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of the Built Environment > Bartlett School Env, Energy and Resources UCL > Provost and Vice Provost Offices > UCL BEAMS UCL |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10146584 |
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