The AEM-01 is a ½” omnidirectional free-field electret condenser IEPE¹ sound measurement microphone, intended to be used as a cost-effective solution for situations that demand accurate measurement results, but do not require type approved measurement equipment. Typical use is in the fields of research, investigation, education and monitoring under non-extreme conditions.

Each AEM-01 microphone is traceably calibrated against a reference microphone, being the Brüel & Kjær Microphone Unit Type 4189-A-021. The supplied calibration data includes pressure field, free field, and random incidence responses in twelfth, third and full octave frequency bands ranging from 20 Hz through 20 kHz.

By applying the calibration data, measured sound pressure levels have an uncertainty of only 0.2 dB with respect to the reference microphone, in each third octave frequency band from 20 Hz through 10 kHz.

The AEM-01 is perfectly suited for parameters based on relative sound energies, which applies to the vast majority of acoustic parameters, such as in room and building acoustics.

¹ Integrated Electronics Piezo-Electric, also known as CCLD (Constant Current Line Drive), ICP® (Integrated Circuit Piezoelectric) or DeltaTron®