According to the present invention, an apparatus, a signal processing unit, data, a processing apparatus, a sound converter, a software product and a method are proposed. The apparatus is proposed for acoustic reproduction, wherein the apparatus is provided with a first electroacoustic sound transducer for generating a sound field, the first electroacoustic sound transducer having an input for receiving an electrical signal for generating the corresponding sound field, wherein the apparatus is characterized in that also a device is provided which is configured to enter into an acoustic interaction with the generated sound field of the first electroacoustic sound transducer in order to generate a modified sound field and wherein the modified sound field has a predetermined acoustic impedance value.

An acoustic filter suitable for an electro-acoustic transducer is provided. The acoustic filter has a relatively high frequency driver and a relatively low frequency driver situated on a common axis. The acoustic filter includes a baffle body having an outer side and an inner side, such that said outer side serves as a baffle for said high frequency driver and said inner side forms a first wall of at least one Helmholtz resonator including a chamber and a vent duct communicating with said chamber.

Disclosed is a sheet-shaped air absorbent for a speaker-box system using porous carbon fibers and a speaker-box system including the same, wherein an air absorbent for a speaker-box system includes at least one sheet member, and the sheet member was made by weaving fibers comprising a porous carbon-based substance or a sheet member with at least two layers, and the sheet member was made by weaving fibers comprising a porous carbon-based substance.

A sensor assembly includes a housing having an external-device interface and a sound port to an interior to the housing. A transducer and an electrical circuit are disposed within the housing. The transducer is acoustically coupled to the sound port while the electrical circuit is electrically coupled to the transducer and the external-device interface. A cavity is formed in a portion of the sensor assembly. In some embodiments, the portion is a base of the housing of the sensor assembly. In other embodiments, the portion is a sound port adapter coupled to the sensor assembly. In any case, the cavity is acoustically coupled to the interior of the housing via the sound port and includes a wall portion structured to modify an acoustic property of the sensor assembly.

The present technology relates to an information processing apparatus configured to obtain high comfortability. The information processing apparatus includes a plurality of board portions, an acquisition unit placed on one of the board portions and configured to acquire information associated with a wearer, and a connection portion being flexible and configured to connect the board portion to another of the board portions. The present technology is applicable to wearable devices.

A camera includes one or more microphone pairs. A first microphone (e.g., a main microphone) is ported to the outside of the camera and captures the desired external audio signal, but may also capture undesired vibrational noise. A second microphone has a similar structure to the first microphone, but is not ported to the outside of the camera. Instead, the second microphone is ported into an enclosed cavity (e.g., 1-2 cubic centimeters in volume). The second microphone may pick up the same vibration excitation and internal acoustic noise as the first microphone but very little of the desired external acoustic sounds around the camera. The unwanted noise can then be removed by subtracting the second audio signal from the second microphone from the main audio signal from the main microphone.

Disclosed is a display apparatus capable of improving a sound quality through an accurate sound transmission, wherein the display apparatus may include a backlight module connected with a rear surface of a display panel, a rear structure for surrounding the backlight module, and a vibration generating device for vibrating the display panel through the backlight module, wherein the vibration generating device is fixed to the rear structure.

A beamformer system isolates a desired direction of an audio signal received from a first microphone array disposed on a first plane of the system and a second microphone array disposed on a second plane of the system. A spatial covariance matrix (SCM) defines the spatial covariance between pairs of microphones. A diagonal of the SCM is varied based on the placement of the microphones; values corresponding to one microphone array are increased, and values corresponding to the other microphone array are decreased.

According to examples, an apparatus may include a chamber having a hole and a microphone unit. The microphone unit may include a first substrate having a first opening aligned with the hole of the chamber, a second substrate positioned with respect to the first substrate to form a gap between the second substrate and the first substrate, the second substrate having a second opening, and a diaphragm housed within the gap formed between the first substrate and the second substrate, in which the first opening is positioned on a first side of the diaphragm and the second opening is positioned on a second side of the diaphragm.

An audio system for a vehicle is provided having a bass-range speaker mounted in a vehicle cavity. The speaker has a front side for producing an acoustic output in a passenger compartment of the vehicle. The vehicle cavity encloses a back side of the speaker. A duct having a first end is in fluid communication with the vehicle cavity and a second end is in fluid communication with the atmosphere outside the vehicle.