sensiBel’s Optical MEMS Microphone Boosts Audio Quality of mh acoustics’ Newest Ambisonics Microphone

sensiBel’s SBM100B digital optical MEMS microphone is now powering mh acoustics’ em64d Eigenmike, a high-end ambisonics microphone array. The SBM100B replaces electret condenser microphones previously used in the Eigenmike, delivering an 8dB higher signal-to-noise ratio (SNR) and a 16dB higher acoustic overload point (AOP). This upgrade enhances recording quality in both quiet and loud environments, according to Gary Elko, president of mh acoustics. The SBM100B also simplifies manufacturing with MEMS advantages like surface mount technology and tighter matching between microphone elements. This reduces production complexity, shortens lead times, and improves overall efficiency. mh acoustics, a pioneer in commercial higher-order ambisonics microphones, has integrated 64 SBM100B microphones into the em64d Eigenmike for superior beamforming and spatial accuracy. The em64d Eigenmike captures sound fields rather than point-source audio, allowing engineers to manipulate recordings with greater precision. Its 64-microphone array ensures high-resolution spatial audio, making it ideal for professional applications. sensiBel introduced the SBM100B in June 2025, and its adoption by mh acoustics validates its performance and manufacturing readiness. The SBM100B achieves an 80dB SNR, a 146dB AOP, and a 132dB dynamic range—outperforming traditional capacitive MEMS microphones. Its compact size matches the acoustic performance of much larger professional handheld microphones. The collaboration between sensiBel and mh acoustics underscores advancements in optical MEMS technology for professional audio recording.