Unified Auralization of Room Simulations; Investigation of sampling grids and other parameters
| dc.contributor.author | Xuanye, Liu | |
| dc.contributor.department | Chalmers tekniska högskola / Institutionen för arkitektur och samhällsbyggnadsteknik (ACE) | sv |
| dc.contributor.department | Chalmers tekniska högskola / Institutionen för arkitektur och samhällsbyggnadsteknik (ACE) | en |
| dc.contributor.examiner | Ahrens, Jens | |
| dc.date.accessioned | 2024-04-15T07:47:07Z | |
| dc.date.available | 2024-04-15T07:47:07Z | |
| dc.date.issued | 2024 | |
| dc.date.submitted | ||
| dc.description.abstract | With the development of computer science and the increase in computing power, the finite-difference time-domain method has gradually become a viable option for solving wideband, transient problems in acoustics simulation. In this method, the binaural response can be extracted by local sampling of the finite-difference grid using an array of receivers. This thesis focuses on the effects of the grid size, the spacing of grid points, and the distribution of grid points in the case of a volumetric sampling. This thesis also investigates the effect of the change in impulse response length and others. These effects include variations in numerical robustness and the frequency properties of the generated audio signal. In order to achieve this study, this thesis simulates the sound field formed by a single plane wave propagation. By sampling this sound field with a volumetric grid, the plane wave density function is calculated using the plane wave decomposition method and integrated with free-field head-related transfer functions in the spherical harmonics domain to get the binaural impulse response. The results of the valuable work show that the numerical stability of a volumetric grid with uniformly distributed sampling points is greatly affected at high frequencies due to spatial aliasing. In addition, the results also give some valuable conclusions for the selection of the impulse response length and the selection of the number of sampling points. | |
| dc.identifier.coursecode | ACEX30 | |
| dc.identifier.uri | http://hdl.handle.net/20.500.12380/307655 | |
| dc.language.iso | eng | |
| dc.setspec.uppsok | Technology | |
| dc.subject | FDTD, Plane wave decomposition, Sampling grid, Spatial audio | |
| dc.title | Unified Auralization of Room Simulations; Investigation of sampling grids and other parameters | |
| dc.type.degree | Examensarbete för masterexamen | sv |
| dc.type.degree | Master's Thesis | en |
| dc.type.uppsok | H | |
| local.programme | Sound and vibration (MPSOV), MSc |