Noise Cancellation Microphone. The ME12 simply plugs into your digital voice recorders microphone jack for uni-directional recording in high noise environments. It reduces ambient noise and improves transcription accuracy when using voice recognition software. Sensitivity of – 68 dB and frequency response from 200 – 5000 Hz. With its 3.5 mm plug it is usable with all digital voice recorders using the DSS file format.