Inferring the location of reflecting surfaces exploiting loudspeaker directivity

V.G. Zaccà, Pablo Martínez-Nuevo, Martin Bo Møller, Jorge Martinez, R. Heusdens

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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 languageEnglish
Title of host publicationProceedings of the 28th European Signal Processing Conference, EUSIPCO
ISBN (Electronic)978-9-0827-9705-3
Publication statusPublished - 2020
EventEUSIPCO 2020: The 28th European Signal Processing Conference - Amsterdam, Netherlands
Duration: 18 Jan 202122 Jan 2021
Conference number: 28th


ConferenceEUSIPCO 2020
OtherDate change due to COVID-19 (former date August 24-28 2020)


  • Room geometry estimation
  • sparse recovery
  • beamforming
  • room acoustics
  • image source model
  • spatial room impulse response
  • loudspeaker directivity model


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