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| Auteurs principaux: | , |
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| Format: | Preprint |
| Publié: |
2024
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| Sujets: | |
| Accès en ligne: | https://arxiv.org/abs/2403.17376 |
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| _version_ | 1866909150221434880 |
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| author | Khatri, Dheepak Granlund, Kenneth |
| author_facet | Khatri, Dheepak Granlund, Kenneth |
| contents | A theoretical study is performed to analyze the directional response of different types of microphone array designs. 1-D (linear) and 2-D (planar) microphone array types are considered, and the delay and sum beamforming and conventional beamforming techniques are employed to localize the sound source. A non-dimensional parameter, G, is characterized to simplify and standardize the rejection performance of both 1-D and 2-D microphone arrays as a function of array geometry and sound source parameters. This parameter G is then used to determine an improved design of a 2-D microphone array for far-field sound localization. One such design, termed the Equi-area array is introduced and analyzed in detail. The design is shown to have an advantageous rejection performance compared to other conventionally used 2-D planar microphone arrays. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2403_17376 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Theoretical Analysis of Quality of Conventional Beamforming for Phased Microphone Arrays Khatri, Dheepak Granlund, Kenneth Sound Audio and Speech Processing 76Q05 (Primary) A theoretical study is performed to analyze the directional response of different types of microphone array designs. 1-D (linear) and 2-D (planar) microphone array types are considered, and the delay and sum beamforming and conventional beamforming techniques are employed to localize the sound source. A non-dimensional parameter, G, is characterized to simplify and standardize the rejection performance of both 1-D and 2-D microphone arrays as a function of array geometry and sound source parameters. This parameter G is then used to determine an improved design of a 2-D microphone array for far-field sound localization. One such design, termed the Equi-area array is introduced and analyzed in detail. The design is shown to have an advantageous rejection performance compared to other conventionally used 2-D planar microphone arrays. |
| title | Theoretical Analysis of Quality of Conventional Beamforming for Phased Microphone Arrays |
| topic | Sound Audio and Speech Processing 76Q05 (Primary) |
| url | https://arxiv.org/abs/2403.17376 |