A voice-controlled electronic device that includes a device housing having a longitudinal axis bisecting opposing top and bottom surfaces and a side surface extending between the top and bottom surfaces. The device can further include one or more microphones disposed within the device housing and distributed radially around the longitudinal axis; a processor configured to execute computer instructions stored in a computer-readable memory for interacting with a user and processing voice commands received by the one or more microphones and first transducer and second transducers configured to generate sound waves within different frequency ranges.

A voice-controlled electronic device that includes a device housing having a longitudinal axis bisecting opposing top and bottom surfaces and a side surface extending between the top and bottom surfaces. The device can further include one or more microphones disposed within the device housing and distributed radially around the longitudinal axis; a processor configured to execute computer instructions stored in a computer-readable memory for interacting with a user and processing voice commands received by the one or more microphones and first transducer and second transducers configured to generate sound waves within different frequency ranges.

A two-way receiver includes a cylindrical frame, a yoke dividing an internal space of the frame and including a cylindrical portion, a first flange portion formed at an outer periphery of the cylindrical portion, a connection wall bent downward from the first flange portion, a second flange portion formed at an outer periphery of the connection wall, and a communication hole formed by deleting a portion of the connection wall and second flange portion. A first speaker unit is installed above the yoke, and a second speaker unit below the yoke. A protector coupled to a lower portion of the frame protects the second speaker. A bass duct formed on an outer periphery of the first speaker unit has a sound emission hole for emitting a sound of the first speaker unit emitted to the communication hole of the yoke to a position spaced apart from the communication hole.

A sound apparatus may include a vibration member, a housing configured to cover a rear surface of the vibration member, and a vibration apparatus including one or more vibration devices configured to vibrate the vibration member. The vibration member may include a non-planar structure.

A sound apparatus may include a vibration member, a housing configured to cover a rear surface of the vibration member, and a vibration apparatus including one or more vibration devices configured to vibrate the vibration member. The vibration member may include a non-planar structure.

Various implementations include seats and related loudspeakers. In particular cases, a seat includes: a seat headrest portion; a seat backrest portion; and a loudspeaker assembly including: at least one driver for generating an acoustic output; and an acoustic exit fixed in the seat backrest portion and angled to provide the acoustic output to a location below a nominal ear position of an occupant of the seat, wherein an angle of the at least one driver provides the acoustic output to achieve a consistent frequency response across a range of positions deviating from the nominal ear position, wherein the angle of the at least one driver is configured to be adjusted in response to a recline angle of the seat reaching a threshold.

Various implementations include seats and related loudspeakers. In particular cases, a seat includes: a seat headrest portion; a seat backrest portion; and a loudspeaker assembly including: at least one driver for generating an acoustic output; and an acoustic exit fixed in the seat backrest portion and angled to provide the acoustic output to a location below a nominal ear position of an occupant of the seat, wherein an angle of the at least one driver provides the acoustic output to achieve a consistent frequency response across a range of positions deviating from the nominal ear position, wherein the angle of the at least one driver is configured to be adjusted in response to a recline angle of the seat reaching a threshold.

A sound output apparatus according to the present technology includes a functional mechanism that performs a specified function; an oscillation providing mechanism that oscillates, as an oscillation-provision-target member, a member that is included in the functional mechanism; and an oscillation controller that controls an oscillation operation performed by the oscillation providing mechanism, on the basis of sound information. The oscillation providing mechanism includes an actuator, a support member, and a biasing member. The actuator generates oscillation along a specified oscillation axis, and includes a rear end that is situated opposite to the oscillation-provision-target member in an axial direction of the oscillation axis. The instruction member supports the actuator. The biasing member is provided around the support member as viewed along the oscillation axis and of which at least a portion is arranged closer to the oscillation-provision-target member than the rear end of the actuator in the axial direction of the oscillation axis, the biasing member biasing the support member toward the oscillation-provision-target member. Further, the oscillation-provision-target member includes a sound output region being configured to have a relatively small thickness.

A sound output apparatus according to the present technology includes a functional mechanism that performs a specified function; an oscillation providing mechanism that oscillates, as an oscillation-provision-target member, a member that is included in the functional mechanism; and an oscillation controller that controls an oscillation operation performed by the oscillation providing mechanism, on the basis of sound information. The oscillation providing mechanism includes an actuator, a support member, and a biasing member. The actuator generates oscillation along a specified oscillation axis, and includes a rear end that is situated opposite to the oscillation-provision-target member in an axial direction of the oscillation axis. The instruction member supports the actuator. The biasing member is provided around the support member as viewed along the oscillation axis and of which at least a portion is arranged closer to the oscillation-provision-target member than the rear end of the actuator in the axial direction of the oscillation axis, the biasing member biasing the support member toward the oscillation-provision-target member. Further, the oscillation-provision-target member includes a sound output region being configured to have a relatively small thickness.

Provided is to prevent a false determination due to an attachment condition of an apparatus that transmits and receives an acoustic signal, and perform accurate personal authentication. A personal authentication device includes: a personal authentication means that authenticates an individual by using first information at least including an acoustic characteristic calculated from an acoustic signal propagating through the head of the user, which is detected by an apparatus being attached on a head of a user for transmitting and receiving the acoustic signal, and a feature amount extracted from the acoustic characteristic; an attachment trouble rule storage means that stores an attachment trouble rule for detecting an attachment trouble with the apparatus; and an attachment trouble detection means that detects a trouble with an attachment state of the apparatus when the first information satisfies the attachment trouble rule.