URGENT - Fix MEMS Mic Static Noise
Budget: $30 – $250 USD
The item is of urgent need. My MEMS-microphone circuit is picking up a constant, low-level hum that blankets the entire recording. I have ruled out obvious grounding mistakes and loose cables, yet the static remains, so I’m looking for a fresh set of expert eyes—and ears—to pinpoint the culprit and guide me to a clean signal path.
You’ll work from the schematic and board files I provide, walk me through any layout or component-level tweaks, and suggest practical tests I can run on the bench (scope, spectrum analysis, simple A-weighted measurements—whatever gives us clarity). I’m happy to share recorded samples and scope screenshots so you can hear exactly what I’m hearing.
The goal is straightforward: identify the source of the hum, recommend specific fixes, and confirm with a before-and-after noise floor measurement that shows the improvement. If you have prior experience quieting MEMS mic preamps, you’ll feel right at home here.
You’ll work from the schematic and board files I provide, walk me through any layout or component-level tweaks, and suggest practical tests I can run on the bench (scope, spectrum analysis, simple A-weighted measurements—whatever gives us clarity). I’m happy to share recorded samples and scope screenshots so you can hear exactly what I’m hearing.
The goal is straightforward: identify the source of the hum, recommend specific fixes, and confirm with a before-and-after noise floor measurement that shows the improvement. If you have prior experience quieting MEMS mic preamps, you’ll feel right at home here.