Room Acoustics Model Calibration: A Case Study with Measurements
Abstract
Due to complaints of poor speech intelligibility in a wine-tasting classroom, an acoustical investigation was conducted. Impulse response measurements were performed and a ray-tracing model was created using Odeon. Since the room's surface material properties were not definitively known, initial estimates were made and the model was calibrated based on the impulse response measurements using a recursive genetic algorithm. The proposed retrofit acoustical materials were evaluated by modifying the calibrated model based on manufacturer's data. The prediction results demonstrated a significant improvement in speech intelligibility should be expected. After the retrofit materials were installed, post-construction impulse response measurements were performed and good agreement with the modelling results was found. Subjectively, the predicted improvement in speech intelligibility was confirmed by end-user observations.
Published
How to Cite
Issue
Section
Copyright on articles is held by the author(s). The corresponding author has the right to grant on behalf of all authors and does grant on behalf of all authors, a worldwide exclusive licence (or non-exclusive license for government employees) to the Publishers and its licensees in perpetuity, in all forms, formats and media (whether known now or created in the future)
i) to publish, reproduce, distribute, display and store the Contribution;
ii) to translate the Contribution into other languages, create adaptations, reprints, include within collections and create summaries, extracts and/or, abstracts of the Contribution;
iii) to exploit all subsidiary rights in the Contribution,
iv) to provide the inclusion of electronic links from the Contribution to third party material where-ever it may be located;
v) to licence any third party to do any or all of the above.