A speaker comprises a housing, a transducer residing inside the housing, and at least one sound guiding hole located on the housing. The transducer generates vibrations. The vibrations produce a sound wave inside the housing and cause a leaked sound wave spreading outside the housing from a portion of the housing. The at least one sound guiding hole guides the sound wave inside the housing through the at least one sound guiding hole to an outside of the housing. The guided sound wave interferes with the leaked sound wave in a target region. The interference at a specific frequency relates to a distance between the at least one sound guiding hole and the portion of the housing.

A bone conduction speaker includes a housing, a vibration board and a transducer. The transducer is located in the housing, and the vibration board is configured to contact with skin and pass vibration. At least one sound guiding hole is set on at least one portion of the housing to guide sound wave inside the housing to the outside of the housing. The guided sound wave interfaces with the leaked sound wave, and the interfacing reduces a sound pressure level of at least a portion of the leaked sound wave. A frequency of the at least a portion of the leaked sound wave is lower than 4000 Hz.

A beamforming microphone array may be integrated into a wall or ceiling tile as a single unit. The beamforming microphone array includes a plurality of microphones that picks up audio input signals. In addition, the wall or ceiling tile may include an acoustically transparent outer surface on the front side of the tile, and the beamforming microphone array picks up the audio input signals through the outer surface of the tile. The beamforming microphone array may be coupled to the tile as a single unit and may be integrated into the back side of the tile.

A speaker comprises a housing, a transducer residing inside the housing, and at least one sound guiding hole located on the housing. The transducer generates vibrations. The vibrations produce a sound wave inside the housing and cause a leaked sound wave spreading outside the housing from a portion of the housing. The at least one sound guiding hole guides the sound wave inside the housing through the at least one sound guiding hole to an outside of the housing. The guided sound wave interferes with the leaked sound wave in a target region. The interference at a specific frequency relates to a distance between the at least one sound guiding hole and the portion of the housing.

Protected microphone systems may include a protective layer and one or more cavities to minimize the vibration sensitivity of a microphone of the protected microphone systems. The protective layer may be constructed of a mesh material. The mesh material may be constructed of a polyester monofilament material.

A bone conduction microphone is provided. The bone conduction microphone may include a laminated structure formed by a vibration unit and an acoustic transducer unit. The bone conduction microphone may include a base structure configured to carry the laminated structure. At least one side of the laminated structure may be physically connected to the base structure. The base structure may vibrate based on an external vibration signal. The vibration unit may be deformed in response to the vibration of the base structure. The acoustic transducer unit may generate an electrical signal based on the deformation of the vibration unit. The bone conduction microphone may include at least one damping structural layer. The at least one damping structural layer may be arranged on an upper surface, a lower surface, and/or an interior of the laminated structure, and the at least one damping layer may be connected to the base structure.

Aspects of the disclosure provide a waterproof packaging technique for fabricating waterproof microphones in mobile devices. A device based on the waterproof packaging technique can include a microelectromechanical system (MEMS) device, a housing enclosing the MEMS device, and a liquid-resistant air inlet passive device (LRAPD) on the housing. The LRAPD can include at least one channel connecting an exterior of the housing with a chamber formed between the housing and the MEMS device. An inside surface of the channel can be coated with a liquid-repellant coating. In some examples, the liquid-repellant coating can be a self-assembled monolayer (SAM) coating.

An image capture device and a handheld image stabilization device may each include a housing, a motor assembly, a microphone, a dampener, or any combination thereof. The housing may include a first port. The motor assembly may be attached to the housing. The motor assembly may include a plurality of motors. The microphone may be configured to detect audio waves via the first port, vibration noise of the plurality of motors via the housing, or both. The audio waves may include acoustic noise from the plurality of motors. The dampener may be coupled to the housing. The dampener may be configured to reduce the acoustic noise from the plurality of motors, the vibration noise from the plurality of motors, or both.

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 bone conduction speaker includes a housing, a vibration board and a transducer. The transducer is located in the housing, and the vibration board is configured to contact with skin and pass vibration. At least one sound guiding hole is set on at least one portion of the housing to guide sound wave inside the housing to the outside of the housing. The guided sound wave interfaces with the leaked sound wave, and the interfacing reduces a sound pressure level of at least a portion of the leaked sound wave. A frequency of the at least a portion of the leaked sound wave is lower than 4000 Hz.