A Wireless Self-Calibrating Ultrasound Microphone Array with Sub-Microsecond Synchronization
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866916809711550464 |
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| author | Laurijssen, Dennis Baeyens, Rens Daems, Walter Steckel, Jan |
| author_facet | Laurijssen, Dennis Baeyens, Rens Daems, Walter Steckel, Jan |
| contents | We present a novel system architecture for a distributed wireless, self-calibrating ultrasound microphone network for synchronized in-air acoustic sensing. Once deployed the embedded nodes determine their position in the environment using the infrared optical tracking system found in the HTC Vive Lighthouses. After self-calibration, the nodes start sampling the ultrasound microphone while embedding a synchronization signal in the data which is established using a wireless Sub-1GHz RF link. Data transmission is handled via the Wi-Fi 6 radio that is embedded in the nodes' SoC, decoupling synchronization from payload transport. A prototype system with a limited amount of network nodes was used to verify the proposed distributed microphone array's wireless data acquisition and synchronization capabilities. This architecture lays the groundwork for scalable, deployable ultrasound arrays for sound source localization applications in bio-acoustic research and industrial acoustic monitoring. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_19612 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | A Wireless Self-Calibrating Ultrasound Microphone Array with Sub-Microsecond Synchronization Laurijssen, Dennis Baeyens, Rens Daems, Walter Steckel, Jan Signal Processing We present a novel system architecture for a distributed wireless, self-calibrating ultrasound microphone network for synchronized in-air acoustic sensing. Once deployed the embedded nodes determine their position in the environment using the infrared optical tracking system found in the HTC Vive Lighthouses. After self-calibration, the nodes start sampling the ultrasound microphone while embedding a synchronization signal in the data which is established using a wireless Sub-1GHz RF link. Data transmission is handled via the Wi-Fi 6 radio that is embedded in the nodes' SoC, decoupling synchronization from payload transport. A prototype system with a limited amount of network nodes was used to verify the proposed distributed microphone array's wireless data acquisition and synchronization capabilities. This architecture lays the groundwork for scalable, deployable ultrasound arrays for sound source localization applications in bio-acoustic research and industrial acoustic monitoring. |
| title | A Wireless Self-Calibrating Ultrasound Microphone Array with Sub-Microsecond Synchronization |
| topic | Signal Processing |
| url | https://arxiv.org/abs/2506.19612 |