The Eta250 Ultra thin-film optical microphone is capable of listening to the entire bandwidth of sound frequencies that physically travel through the air. Using a single sensing head, this patented sensor technology covers a frequency bandwidth from 10 Hz to 1 million Hz and is designed for applications where low self-noise is required.
Key features.
Membrane-free optical microphone
Ultra-low self-noise
Frequency range: 10 Hz - 1 MHz
Sound pressure level dynamic range: 50 - 150 dB(A)