A video audio recording system includes a video acquisition unit, an audio acquisition unit, a video recording parameter acquisition unit, and an audio emphasis unit. The video acquisition unit acquires a video signal by recording video of a subject. The audio acquisition unit acquires an audio signal by recording a sound. The video recording parameter acquisition unit acquires first information representing a video recording direction of the video acquisition unit and second information representing a positional relationship between the video acquisition unit and the audio acquisition unit. The audio emphasis unit emphasizes, based on the acquired first and second information, the acquired audio signal of the sound arriving in a predetermined direction.

An audio device having an improved bendable structure is disclosed. The audio device includes an amplifier unit configured to amplify an audio signal, at least one speaker unit configured to output the amplified audio signal as a sound signal, and at least one link unit rotatably connecting the at least one speaker unit to the amplifier unit.

A small-sized onboard device that includes a speaker and a microphone and is configured to reduce noise caused by an echo is provided. The speaker is provided inside a housing that forms a cavity inside so that a sound emission surface of the speaker faces a direction substantially orthogonal to a front surface, and a first opening is formed in a front surface of the housing. A microphone case and a sound guide member are juxtaposed on the front surface of the housing. A microphone is housed inside the microphone case. The microphone case has a sound pickup hole in a front surface of the microphone case. The sound guide member has a sound guide hole that passes through the sound guide member. The first opening is provided in a vicinity of a top surface or a bottom surface of the housing.

An alert warning system. In an aspect, alert lights are configured to provide a visual alert and a sound system is configured to provide an audible alert to an approaching vehicle operator. The visual and audible alerts are responsive to a two-part initiation event. The first part of the event initiates the visual alert when the approaching vehicle reaches a first predetermined distance from a safety target. The second part of the event initiates the audible alert when the approaching vehicle reaches a second predetermined distance from the safety target. The second predetermined distance is less than the first predetermined distance.

A sound outputting apparatus is provided. The sound outputting apparatus includes: a main body; and a loudspeaker accommodated in the main body. The loudspeaker includes: a vibration member configured to generate sound waves; and a sound guide having a first end connected to the vibration member, a second end having an open structure, a first surface between the first end and the second end, and a plurality of openings formed through the first surface along a longitudinal direction of the sound guide. The plurality of openings increase in size as distance from the vibration member increases.

A sound enhancing device for improving voice reception of a smartphone microphone is attachable to the rear surface of a smartphone opposite the surface of the smartphone having a display. The device has a deflector in a sliding engagement within a cavity of a housing moveable between a stowed position and a deployed position. A reflective curved area positioned on a first surface of the deflector captures and reflects sound waves from the voice of a user toward a microphone of the smartphone.

An audio enhancing apparatus for electronic media devices including a support base having a rectangular rear side, an open front side, an open top side, a bottom side perpendicularly disposed to the rear side, and a pair of sidewalls. Each of the pair of sidewalls has a right triangulated bottom portion and an elongated rectangular top portion extended upwards from the bottom portion. Each of a right bracket and a left bracket of a pair of brackets is attached to the top portion of each of a right sidewall and a left sidewall, respectively, of the pair of sidewalls. The pair of brackets is configured to removably secure a bottom section of a portable electronic device within the support base.

Provided is a sound bar including: a rear sound signal generating unit that generates a rear sound from an input audio signal; and an output unit that outputs the rear sound generated by the rear sound signal generating unit to a rear sound speaker.

A loudspeaker system (50) has a front loudspeaker enclosure (10) having at least one front loudspeaker (20) and a rear loudspeaker enclosure (30) having at least one second loudspeaker (40). The front loudspeaker enclosure (10) is in the form of a horn-loaded enclosure. The rear loudspeaker enclosure (30) is in the form of a vented high-pass enclosure.

A receiver control method includes: when a receiver of a terminal is at a first position of the terminal, picking up, by using a microphone, an audio signal sent by the receiver; and if there is a noise in the audio signal picked up by the microphone, moving the receiver to a second position of the terminal. When the receiver is at the first position, an orthographic projection of a first sound hole of the receiver along a first direction at least partially overlaps with a target component. When the receiver is at the second location, the orthographic projection of the first sound hole along the first direction does not overlap with the target component.