Patent ID: 9554206
Date: 2017-01-24
CPC Classifications: H04R

Claim:
1. A sound presentation device comprising: a casing; an electroacoustic transducer that is installed within a space inside the casing, the electroacoustic transducer dividing the space inside the casing into a first empty chamber and a second empty chamber that are acoustically isolated from each other, and that receives an electrical signal and vibrates; and a vibration plate that makes contact with a body surface of a human body when the sound presentation device is mounted on the body surface, and causes vibration of the electroacoustic transducer to be propagated to the human body via the first empty chamber, wherein the second empty chamber suppresses sound waves produced by the vibration of the electroacoustic transducer from being emitted to outside of the sound presentation device via the second empty chamber.