Testing began with white noise and ambient sound recordings.

As we move forward with our IoT sensor and microphone setup, the first step in our testing protocol is to record baseline samples. We began by capturing white noise and ambient room noise from all four microphones. To ensure consistency, we mounted the mics directly onto a hardwood base, placing them side by side. This setup allowed us to compare their performance under controlled conditions.  This proved to be a complete failure and reminded us that the fields of engineering and electronics are highly specialized ... you often need to find an expert in your specific area of interest to achieve your desired goals ;-)