An ultrasonic transducer for an ultrasonic flow meter, with a transducer housing, with a transducer element for generating and/or for receiving ultrasonic signals and with an emitting element, the emitting element being exposed to ultrasonic signals at least indirectly from the transducer element and emitting the ultrasonic signals via one end face on one front side of the emitting element into the vicinity bordering the ultrasonic transducer and/or the emitting element picking up ultrasonic signals from the vicinity via one end face on one front side of the emitting element and transmitting them at least indirectly to the transducer element. A good directional action in spite of small dimensions is achieved by the emitting element being connected to the transducer housing via a connecting element and being free standing on its periphery on the front side such that it can oscillate freely on the periphery.

Certain aspects of the technology disclosed herein include generating a virtual sound field based on data from an ambisonic recording device. The ambisonic device records sound of a surrounding environment using at least four microphones having a tetrahedral orientation. An omnidirectional microphone having an audio-isolated portion can be used to isolate sound from a particular direction. Sound received from the plurality of microphones can be used to generate a virtual sound field. The virtual sound field include a dataset indicating a pressure signal and a plurality of velocity vectors. The ambisonic recording device can include a wide angle camera and generate wide angle video corresponding to the virtual sound field.

An electroacoustic transducer includes a driver, a diaphragm 13 driven to vibrate by the driver and emitting sound, a baffle 21 holding the diaphragm 13, first apertures 25 extending from the front surface to the rear surface of the baffle 21, and a first acoustic resistor 22 disposed on the front surface of the baffle so as to cover the first apertures. The electroacoustic transducer includes a plurality of sound paths for guiding the sound generated by the diaphragm 13 to the rear surface of the baffle 21.

An apparatus includes a microphone and a gasket. The microphone includes a base having an inner surface and an outer surface. The inner surface is generally parallel with the outer surface. The base has a port extending from the outer surface to the inner surface. The microphone includes a micro electro mechanical system (MEMS) transducer coupled to the inner surface of the base over the port. The microphone has a cover coupled to the base and the cover encloses the MEMS transducer. The gasket is coupled to the outer surface of the base and forms a channel. The channel has a first end and a second end. The first end communicates with the port of the microphone, and the second end of the channel is generally aligned with an edge of the base.

A vehicle capable of directing a sound output from a center speaker to a passenger by adjusting a tilt angle and a swivel angle of a cradle for a user terminal device includes: a center speaker provided on a dashboard; a cradle provided within a preset distance from the center speaker, fixing a user terminal device, and configured to tilt and swivel; a camera configured to obtain an image of a passenger; and a controller configured to determine an ear position of the passenger based on the image of the passenger, determine a first angle and a second angle based on the ear position of the passenger, and control the cradle to be tilted by the first angle and swiveled by the second angle.

An acoustic lens system comprises one or more speakers and a substrate. The speaker comprises a driver capable of receiving an audio signal and a wave forming member in communication with the driver and having a sloped surface. The speaker is adapted to abut the substrate. In use, the driver causes translation of the wave forming member in response to the audio signal. The translation of the wave forming member causes the sloped surface to generate an audio waveform that extends in a direction divergent to the direction of translation. The speaker also generates forces against the substrate so that a ripple wave is propagated along the substrate. The propagation of the ripple wave is projected perpendicularly at a location on the substrate to generate a sound wave from the substrate. The sound wave generated by the ripple wave and the divergently extending wave from the wave forming member intersect at a position away from the speaker thereby creating an immersive sound experience for the user.

In a unidirectional dynamic microphone unit, a cylindrical tube is provided to cover the microphone unit, a cylindrical wall of a first cylindrical portion that is included in the cylindrical tube and extends to at least the rearward is provided with a rear sound wave introducing portion weighted such that an acoustic resistance value is gradually made smaller toward the rearward side from positions of sound holes for taking in a sound wave transmitting around from the rearward side, preferably formed of a trumpet-shaped opening, and it is possible to enhance the sensibility to sound pressures without degradation of the frequency response and the directionality.

An omni-directional speaker system includes a deflector sub-assembly and a pair of acoustic sub-assemblies. The deflector sub-assembly includes a pair of diametrically opposed acoustic deflectors. Each of the acoustic sub-assemblies includes an acoustic driver for radiating acoustic energy toward an associated one of the acoustic deflectors. The acoustic sub-assemblies are coupled together via the deflector sub-assembly.

An omni-directional speaker system includes a deflector sub-assembly and a pair of acoustic sub-assemblies. The deflector sub-assembly includes a pair of diametrically opposed acoustic deflectors. Each of the acoustic sub-assemblies includes an acoustic driver for radiating acoustic energy toward an associated one of the acoustic deflectors. The acoustic sub-assemblies are coupled together via the deflector sub-assembly.

A liquid crystal display (LCD) module, a liquid crystal display device, and an electronic device are disclosed. The LCD module includes a backlight module and an LCD panel. The LCD panel includes an upper substrate and a lower substrate disposed opposite to the upper substrate, and a liquid crystal unit filled between the upper substrate and the lower substrate. A reinforcing rib functioning as a sound wave conducting channel is disposed on a side of the backlight module facing away from the LCD panel. A vibration exciter is attached to the reinforcing rib for generating vibration energy.