Abstract
Accurate sound field reproduction in rooms is often limited by the lack of knowledge of the room characteristics. Information about the room shape or nearby reflecting boundaries can, in principle, be used to improve the accuracy of the reproduction. In this paper, we propose a method to infer the location of nearby reflecting boundaries from measurements on a microphone array. As opposed to traditional methods, we explicitly exploit the loudspeaker directivity model (beyond omnidirectional radiation) and the microphone array geometry. This approach does not require noiseless timing information of the echoes as input, nor a tailored loudspeaker-wall-microphone measurement step. Simulations show the proposed model outperforms current methods that disregard directivity in reverberant environments.
Original language | English |
---|---|
Title of host publication | Proceedings of the 28th European Signal Processing Conference, EUSIPCO |
Pages | 61-65 |
ISBN (Electronic) | 978-9-0827-9705-3 |
Publication status | Published - 2020 |
Event | EUSIPCO 2020: The 28th European Signal Processing Conference - Amsterdam, Netherlands Duration: 18 Jan 2021 → 22 Jan 2021 Conference number: 28th |
Conference
Conference | EUSIPCO 2020 |
---|---|
Country/Territory | Netherlands |
City | Amsterdam |
Period | 18/01/21 → 22/01/21 |
Other | Date change due to COVID-19 (former date August 24-28 2020) |
Keywords
- Room geometry estimation
- sparse recovery
- beamforming
- room acoustics
- image source model
- spatial room impulse response
- loudspeaker directivity model