Patent ID: 8155707

Claim:
A hands-free voice input-output device comprising: a hands-free voice input section that generates a first voice signal; and a voice output section that outputs a voice from a speaker based on a second voice signal, the hands-free voice input section including a microphone unit, the microphone unit including a housing that has an inner space, a partition member that is provided in the housing and divides the inner space into a first space and a second space, the partition member being at least partially formed of a diaphragm which has a first face and a second face, the first face faces the first space, and the second face faces the second space, and an electrical signal output circuit that outputs an electrical signal that is the first voice signal based on vibrations of the diaphragm, a first through-hole formed in the housing through which the first space communicates with a space outside of the housing and a second through-hole formed in the housing through which the second space communicates with the space outside the housing, wherein sound pressures applied to the first face and the second face correspond to sound pressures of sounds which have entered the first through-hole and the second through-hole respectively.