To assess the reliability of the SonicGuard sensor across various instances, a total of six SonicGuard sensors were individually tested. Each sensor was placed at a distance of 1 meter from the sound source within an isolated room with free field conditions. A standardized reference signal, encompassing the frequency range of 1–20 kHz, was then employed. The performance of the SonicGuard sensors was subsequently compared to the calibrated microphone (MIC 255-1) to gauge their accuracy.
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