Enlargement of perceived size of sound source using diffusive geometries
| dc.contributor.author | Xu, Zhiwen | |
| 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 | 2024-04-15T07:58:53Z | |
| dc.date.available | 2024-04-15T07:58:53Z | |
| dc.date.issued | 2024 | |
| dc.date.submitted | ||
| dc.description.abstract | Interaural cross correlation, which quantifies the similarity of binaural signals, is essential for immersive and rendered auditory environment. Previous research has proven that reducing interaural correlation leads to expansion of perceived size of a source. The Schroeder diffuser is a prevalently used acoustic design to create pleasant acoustic environment since it was firstly developed. It helps to eliminate many acoustic problems in many scenarios through scattering waves in multiply directions. In this work, the Schroeder diffuser is employed to manufacture natural sound field with reduced interaural correlation so that models of source enlarger can be studied further. To explore the properties of the sound field of the Schroeder diffuser, the produced sound field is simulated and a method of representing the sound field with circular harmonic expansion is applied. The characteristics of the sound field of the Schroeder diffuser are investigated to discover their connectivity with low interaural correlation in order that any other arbitrary sound field can be manipulated to achieve it. In light of such discovery, two models of simple sound fields which are impulse field and plane wave field are utilized to produce the sound field with low interaural correlation with proper modification engaged. These simple models are capable of saving computational cost as simulating the Schroeder diffuser is pretty resource and time consuming. | |
| dc.identifier.coursecode | ACEX30 | |
| dc.identifier.uri | http://hdl.handle.net/20.500.12380/307656 | |
| dc.language.iso | eng | |
| dc.setspec.uppsok | Technology | |
| dc.subject | Spatial Audio, Diffusive Geometry, Schroeder Diffuser, Circular Harmonic Ex pansion, Binaural Analysis, Digital Signal Process | |
| dc.title | Enlargement of perceived size of sound source using diffusive geometries | |
| 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 |