Abstract: An electronic device includes: a plurality of oscillators (10) that output modulation waves of a parametric speaker; a display unit (40) that displays a plurality of contents at the same time; a recognition unit that recognizes the locations of a plurality of users; and a control unit that controls the oscillators (10) so as to reproduce sounds corresponding to the contents. The control unit controls the oscillators (10) so as to reproduce the sound corresponding to the content selected by each user, toward the location of each of the plurality of users which is recognized by the recognition unit.

Abstract: A navigation apparatus 100 includes a current position information acquisition unit (a self-position acquisition unit 42) that acquires current position information, and a travel direction determination unit (for example, a route search unit 44) that determines a travel direction based on the acquired current position information and destination position information. The navigation apparatus 100 further includes a sound unit that outputs a sound (for example, a parametric speaker 30), and a sound control unit 41 that controls the sound unit so that the sound can be heard to the user from the travel direction.

Abstract: A portable terminal device (100) includes a plurality of operation units (for example, a plurality of operation keys (11)) that are operated by a user; a detection unit that detects which operation unit of the plurality of operation units is operated; and a directional speaker (for example, a parametric speaker (30)). The portable terminal device (100) further includes an audio control unit that controls the directional speaker so that an audio image is formed at a position corresponding to the position of the operation unit operated by the user among the plurality of operation units.

Abstract: An input apparatus (for example, a mobile terminal apparatus (100)) includes a display unit (60) that displays a plurality of operation position displays (for example, operation position displays (61 to 66)) ; and a detection unit that contactlessly detects an operation which corresponds to an operation position set in a specific space of a front of the input apparatus in correspondence to each of the plurality of operation position displays. The detection unit includes a first piezoelectric element (an oscillation piezoelectric element (31)) that oscillates ultrasound toward the front space of the input apparatus; a second piezoelectric element (a reception piezoelectric element (21)) that detects the ultrasound which is oscillated by the first piezoelectric element; and a determination unit that determines whether or not an operation is performed on a certain operation position based on a result of detection performed by the second piezoelectric element.

Abstract: A fluid -filled elastic bushing wherein an elastic body elastically connecting a center shaft member and an outer cylindrical member is provided a displacement restrictor including a stop portion extending from one of the center shaft and outer cylindrical members toward the other member, to restrict an amount of radial displacement of these two members. The stop portion includes an abutting part opposed to the other member with a first radial spacing therebetween, and a shoulder surface adjacent to the abutting part. The displacement restrictor further includes a buffer layer disposed in close contact with the shoulder surface and made of an elastic material whose stiffness is lower than a material of the abutting part. The buffer layer is opposed to the above-indicated other member with a second radial spacing therebetween smaller than the first radial spacing.