High-sensitivity microphone solution for 30~100cm voice capture. Omnidirectional design with mid-high sensitivity and anti-reverberation tuning — ideal for nurse stations, dispatch consoles, conference main mics, and security booths.
Long-distance voice capture from patient beds or hallway intercoms — need clear, hands-free communication.
Control room communication requiring clear pickup from operator position — stable gain at distance.
Ceiling or table-top mics for conference rooms — pick up multiple speakers across the table.
Visitor communication through glass or distance — need high sensitivity and ambient noise rejection.
Target: -30dB ~ -40dB — Higher sensitivity allows effective voice pickup from 30~100cm distance without requiring the speaker to be close to the mic.
Picks up sound from all directions — essential for nurse stations, dispatch consoles, and conference rooms where speaker position is not fixed.
Optimize 1kHz ~ 5kHz (voice band) with slight low-cut below 300Hz. Reduces room reverberation and ambient noise while enhancing speech intelligibility at distance.
SNR ≥ 65dB ensures clean signal-to-noise ratio. High sensitivity combined with high SNR provides stable gain without excessive noise floor.
| Parameter | Requirement | Why It Matters |
|---|---|---|
| Polar Pattern | Omnidirectional | Captures voice from any direction — essential for fixed installations with variable speaker position |
| Sensitivity | -30dB ~ -40dB (mid-high sensitivity) | Higher sensitivity enables effective pickup at 30~100cm distance |
| Frequency Response | Slight low-cut below 300Hz, boost 1~5kHz voice band | Reduces room reverberation and ambient noise, enhances speech clarity |
| SNR | ≥ 65dB | Ensures clean signal extraction from noise floor at long distance |
| Application | Recommended Model | Key Specs | Why It Works |
|---|---|---|---|
| Nurse Station / Dispatch Console | ECM-F9745AL36-186 | 9.7×4.5mm, -36dB, SNR 65dB, omnidirectional | Mid-band boost enhances voice clarity; high sensitivity for long-distance pickup |
| Conference Main Mic | ECM-B9745AL30RC | 9.7×4.5mm, -30dB, SNR 74dB, omnidirectional | Highest sensitivity for maximum pickup distance; flat response for natural voice |
| Security Booth | ECM-B6027AML38-728 | 6×2.7mm, -38dB, SNR 75dB, omnidirectional | Compact size with excellent SNR; fits space-constrained booth designs |
Choose by your primary requirement — no complex calculations.
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