Noise Cancelling 1-Wire Microphone Sound file: Mic located ¼” from voice source Voice played at 94dB Noise source located 50cm from microphone Playing 100 dB street noise (as measured at the mic location) Format: Voice without background noise Voice (male then female) with background / street noise Street noise only Microphones presented: Lab measurement (reference) mic Standard 1-wire mic Noise cancelling mic

N/C 1-Wire Microphone Sound Files Reference Microphone Standard Microphone N/C Microphone Voice = 94dB Street Noise = 100dB