To provide a notification device which can notify acquired information that an external device operated by a predetermined user has acquired information urging next operation of the predetermined user to the predetermined user without destroying specified space sound environment supplying the sound environment requested by the user.
The notification device is installed in a special space supplying the sound environment requested by the user in a condition that the position of the user is decided. The device includes: an acquired information detection unit which detects the acquired information that the external device operated by the predetermined user has acquired information urging next operation of the predetermined user; and vibration units which are installed in respective staying positions of the users, and vibrate the staying position of the predetermined user if detecting that the acquired information detecting unit detects the acquired information.
Hidemi Matsukura
Mayuko Wakuda
Akira Hirakawa
Kazunobu Sera
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