This paper proposes a spatial filter based on the cross-spectral density between directional microphones. The operation principle of the proposed spatial filter is predicated on the principles of the cross pattern coherence, which is a parametric spatial filtering technique that uses coherence-based measures as a criterion for focusing on specific directions. In this work, the choice of the directional microphones is performed according to the microphone array specifications. A spatial filter is then calculated and assigns attenuation values to the output of a beamformer. In the experimental validation, where a room simulation is used to generate a virtual recording scenario, the spatial filter provides an improvement in terms of interference suppression over conventional beamforming.
|Title of host publication||IISA 2014 - 5th International Conference on Information, Intelligence, Systems and Applications|
|Publication status||Published - 2014|
|MoE publication type||A4 Article in a conference publication|
|Event||INTERNATIONAL CONFERENCE ON INFORMATION, INTELLIGENCE, SYSTEMS AND APPLICATIONS - |
Duration: 1 Jan 1900 → …
|Conference||INTERNATIONAL CONFERENCE ON INFORMATION, INTELLIGENCE, SYSTEMS AND APPLICATIONS|
|Period||01/01/1900 → …|