Microphone-loudspeaker integrated apparatus and vehicle
A microphone-loudspeaker integrated apparatus includes a plurality of microphones, a loudspeaker, and a synthesis unit. The loudspeaker is disposed between the plurality of microphones. The synthesis unit synthesizes sounds collected from the plurality of microphones. A distance between the plurality of microphones is set so as to fall within a range within which sound at a frequency needed for recognizing voice is collectable and within a range within which a noise amount due to vibration of the loudspeaker is allowable, when voice recognition is performed based on sound obtained through synthesis by the synthesis unit.
1. A microphone-loudspeaker integrated apparatus comprising:
a plurality of microphones;
a loudspeaker disposed between two microphones of the plurality of microphones; and
a synthesis unit that synthesizes sounds collected from the plurality of microphones, wherein
a distance between the plurality of microphones is set so as to fall within a range within which a maximum frequency of sound needed for recognizing voice is greater than a predetermined frequency and within a range within which a noise amount due to vibration of the loudspeaker is less than a predetermined noise limit, when voice recognition is performed based on sound obtained through synthesis by the synthesis unit, and
the microphone-loudspeaker integrated apparatus is used in a state in which the microphone-loudspeaker integrated apparatus is attached at a predetermined position of an overhead console of a vehicle.
2. The microphone-loudspeaker integrated apparatus according to claim 1 , wherein the plurality of microphones have a relation that as the distance between the microphones becomes greater, a maximum frequency at which sound is collectable with recognizable quality decreases, and that the noise amount due to the vibration of the loudspeaker decreases.
3. The microphone-loudspeaker integrated apparatus according to claim 1 , further comprising an adjustment unit configured to adjust the distance between the microphones.
4. The microphone-loudspeaker integrated apparatus according to claim 1 , wherein the plurality of microphones are two microphones.
5. A vehicle comprising:
a microphone-loudspeaker integrated apparatus being attached at a predetermined position of an overhead console of the vehicle,
wherein the microphone-loudspeaker integrated apparatus includes:
a plurality of microphones,
a loudspeaker disposed between two microphones of the plurality of microphones, and
a synthesis unit that synthesizes sounds collected from the plurality of microphones, wherein
a distance between the plurality of microphones is set so as to fall within a range within which a maximum frequency of sound needed for recognizing voice is greater than a predetermined frequency and within a range within which a noise amount due to vibration of the loudspeaker is less than a predetermined noise limit, when voice recognition is performed based on sound obtained through synthesis by the synthesis unit.
6. The microphone-loudspeaker integrated apparatus according to claim 1 , wherein the distance between the plurality of microphones is greater than a diameter of the loudspeaker.
7. The vehicle according to claim 5 , wherein the distance between the plurality of microphones is greater than a diameter of the loudspeaker.