A vehicle sound output device includes a sound generation unit configured to generate a sound having a predetermined frequency, a double wall disposed on a vehicle outer side with respect to the sound generation unit, and including an inner wall portion and an outer wall portion which are separated from each other in a vehicle inner-outer direction, and an intermediate layer which is formed in a closed space between the inner wall portion and the outer wall portion and through which the sound is transmitted.

Methods and devices for repelling mosquitoes may operate by generating the sounds of fore and hind pairs of dragonfly wings, which may be dragonfly wing beat sounds. Such sounds may be generated using digital or analog circuitry. The digital sounds may be recordings of synthesized or enhanced sounds of dragonfly wings beating. The device may take the form of a button that may be worn or otherwise carried by a user.

Methods and devices for repelling mosquitoes may operate by generating the sounds of fore and hind pairs of dragonfly wings, which may be dragonfly wing beat sounds. Such sounds may be generated using digital or analog circuitry. The digital sounds may be recordings of synthesized or enhanced sounds of dragonfly wings beating. The device may take the form of a button that may be worn or otherwise carried by a user.

A type estimation model generation system is a system that generates a type estimation model used for type estimation of estimating one of a plurality of types to which a user belongs, the system including: a learning data acquiring unit configured to acquire learning time series information that is information of a time series about a plurality of used musical pieces and learning type information representing types to which users who have used the plurality of musical pieces belong that are learning data used for machine learning; and a model generating unit configured to generate the type estimation model by performing machine learning using information based on the learning time series information as an input for the type estimation model in units of musical pieces in order of the time series and information based on the learning type information as an output of the type estimation model.

An audio device being a mobile terminal includes: a display a touch panel that is that is provided on a surface of the display; a display controller that causes a second display area including the information related to the sorting destination to be superimposed and displayed on a first display area provided within a screen and including a list of music of the sorting source; an accepting unit that accepts, via the touch panel, the user operation of selecting music to be registered in the sorting destination from the sorting source and the user operation of selecting the sorting destination, in a state in which the superimposed display is maintained by the display controller; and a music sorting unit that adds the music to the sorting destination on the basis of the user operation.

The invention comprises a novel pet ball with an anchored squeaker which will not break or otherwise be inoperable by a firm bite of a pet. A malleable inner and outer shell construction makes the ball simple yet less prone to damage as it allows the squeaker insert to move to a degree in response to pressure of a bite. The squeaker cannot be dislodged from int's insert. The outer shell of a wooly fabric covers the exit portion of the squeaker yet allows sound and air to travel though the ball.

The invention comprises a novel pet ball with an anchored squeaker which will not break or otherwise be inoperable by a firm bite of a pet. A malleable inner and outer shell construction makes the ball simple yet less prone to damage as it allows the squeaker insert to move to a degree in response to pressure of a bite. The squeaker cannot be dislodged from int's insert. The outer shell of a wooly fabric covers the exit portion of the squeaker yet allows sound and air to travel though the ball.

Provided are an ultrasonic transducer having a state monitoring function, and an ultrasonic cleaning device using the same. The ultrasonic transducer having a state monitoring function is a Langevin ultrasonic transducer for use in an ultrasonic cleaning device configured to clean an object to be cleaned via cleaning liquid to which ultrasonic vibrations are applied, the ultrasonic transducer having a state monitoring function including a plurality of piezoelectric elements, which are arranged to be stacked on each other, and are expandable and contractable in a direction of the stacking, a part of the plurality of piezoelectric elements serving as a vibration exciting piezoelectric element configured to expand and contract by being applied with an AC voltage, another part of the plurality of piezoelectric elements serving as a state monitoring piezoelectric element configured to output a state monitoring voltage by the expansion and contraction of the vibration exciting piezoelectric element.

Provided are an ultrasonic transducer having a state monitoring function, and an ultrasonic cleaning device using the same. The ultrasonic transducer having a state monitoring function is a Langevin ultrasonic transducer for use in an ultrasonic cleaning device configured to clean an object to be cleaned via cleaning liquid to which ultrasonic vibrations are applied, the ultrasonic transducer having a state monitoring function including a plurality of piezoelectric elements, which are arranged to be stacked on each other, and are expandable and contractable in a direction of the stacking, a part of the plurality of piezoelectric elements serving as a vibration exciting piezoelectric element configured to expand and contract by being applied with an AC voltage, another part of the plurality of piezoelectric elements serving as a state monitoring piezoelectric element configured to output a state monitoring voltage by the expansion and contraction of the vibration exciting piezoelectric element.

An apparatus for generating a driving sound in a vehicle includes a first conversion device that receives first sound information and converts the received first sound information into second sound information, a second conversion device that converts the second sound information into third sound information based on a conversion parameter, a storage that receives feedback information of a user about the third sound information and corrects and stores the third sound information, and a playback device that plays the stored third sound information