A vibration sensor (100) is provided, including a housing structure (110, 510, 610, 710, 810, 910, 1010, 1110, 1510, 1710) and an acoustic transducer (120, 520, 620, 720, 820, 920, 1020, 1120, 1220, 1320, 1420, 1520, 1720) physically connected to the housing structure (110, 510, 610, 710, 810, 910, 1010, 1110, 1510, 1710), wherein a first acoustic cavity (140, 1040) is formed at least partially by the housing structure (110, 510, 610, 710, 810, 910, 1010, 1110, 1510, 1710) and the acoustic transducer (120, 520, 620, 720, 820, 920, 1020, 1120, 1220, 1320, 1420, 1520, 1720), and a vibration unit (130) which is located in the first acoustic cavity (140, 1040), and separates the first acoustic cavity (140, 1040) into a second acoustic cavity (142, 542, 642, 742, 842, 942, 1042, 1142, 1242, 1342, 1442, 1542, 1642) and a third acoustic cavity (141, 941, 1041, 1141, 1541, 1641).

The embodiment of the present disclosure discloses a sensing device, comprising: an elastic component; a sensing cavity, wherein the elastic component forms a first sidewall of the sensing cavity; and an energy conversion component configured to obtain a sensing signal and convert the sensing signal into an electrical signal, the energy conversion component being in communication with the sensing cavity, and the sensing signal relating to a change of a volume of the sensing cavity, wherein at least one convex structure is arranged on one side of the elastic component facing toward the sensing cavity, the elastic component drives the at least one convex structure to move in response to an external signal, and the movement of the at least one convex structure changing the volume of the sensing cavity.

A vibration sensor includes a vibration receiver and an acoustic transducer. The vibration receiver includes a housing and a vibration unit. The housing forms an acoustic cavity. The vibration unit is located in the acoustic cavity and divides the acoustic cavity into a first acoustic cavity and a second acoustic cavity. The acoustic transducer is acoustically connected to the first acoustic cavity. The housing is configured to generate vibration based on an external vibration signal. The vibration unit vibrates in response to the vibration of the housing and transmits, through the first acoustic cavity, the vibration to the acoustic transducer to generate an electrical signal. The vibrating unit includes a mass element and an elastic element. A deviation between cross-sectional areas of the mass element and the first acoustic cavity perpendicular to a vibration direction of the mass unit is less than 25%.

An acoustic sensor assembly includes a housing having an external-device interface and a sound port to an interior of the housing. An electro-acoustic transducer and an electrical circuit are disposed within the housing. The electro-acoustic transducer separates the interior into a front volume and a back volume, where the sound port acoustically couples the front volume to an exterior of the housing. The back volume includes a first portion and a second portion. The electrical circuit is electrically coupled to the electro-acoustic transducer and to the external-device interface. One or more apertures acoustically couple the first and second portions of the back volume and are structured to shape a frequency response of the acoustic sensor assembly.

The present disclosure relates to an acoustic output apparatus. The acoustic output apparatus comprising: at least one low-frequency acoustic driver that outputs sound from at least two first sound guiding holes; at least one high-frequency acoustic driver that outputs sound from at least two second sound guiding holes; and a controller configured to cause the low-frequency acoustic driver to output sound in a first frequency range, and cause the high-frequency acoustic driver to output sound in a second frequency range, wherein the second frequency range includes frequencies higher than the first frequency range.

A micro-electro mechanical device includes a casing, a vibration sensor, a vibration membrane assembly, and a micro-electro mechanical microphone. The casing has a sound-receiving hole, and the vibration sensor is disposed in the casing. The vibration membrane assembly is disposed in the casing and corresponds to the vibration sensor. The micro-electro mechanical microphone is disposed in the casing and corresponds to the sound-receiving hole, and a back cavity of the micro-electro mechanical microphone is formed in the casing. The back cavity at least partially overlaps with areas corresponding to a vertical projection of the vibration membrane assembly.

A voice augmentation device disposed at a specific position with respect to a droplet suppressing member disposed between a speaker and a listener to suppress droplet generated from at least one of a mouth and nose of the speaker causes a base vibration input part to receive vibration from at least one of the droplet suppressing member and air between the droplet suppressing member and the base vibration input part, causes a mounting part to receive the vibration from the droplet suppressing member, causes a coupling part to receive the vibration from at least one of the droplet suppressing member and air between the droplet suppressing member and the coupling part, and causes a base vibration output part to transmit the vibration received by the base vibration input part, the mounting part, and the coupling part to air on a side of the listener.

The present disclosure relates to an acoustic output device including an earphone core, a controller, a Bluetooth module, and a button module. The earphone core may include at least one low-frequency acoustic driver configured to output sounds from at least two first guiding holes and at least one high-frequency acoustic driver configured to output sounds from at least two second guiding holes. The controller may be configured to direct the at least one low-frequency acoustic driver to output the sounds in a first frequency range and direct the at least one high-frequency acoustic driver to output the sounds in a second frequency range. The Bluetooth module may be configured to connect the acoustic output device with at least one terminal device. The button module may be configured to implement an interaction between a user of the acoustic output device and the acoustic output device.

The present disclosure is directed to a sound amplification device. The sound amplification device comprises a vibrating body, the vibrating body including at least one first vibration surface and at least one contact region for contacting with a vibration source. The vibration source detachably contacts with a contact region, an area of a first vibration surface is larger than an area of the contact region, the vibration source is configured to generate vibration, and the vibration is transmitted to the first vibration surface through the contact region, and further transmitted outwards through the first vibration surface.

An image capture device includes a housing that includes a pattern of apertures and a microphone disposed within the housing and proximate to the apertures. The image capture device includes a membrane assembly. The membrane assembly includes a support disposed between the housing and the microphone and a channel defined in the support that directs sound waves from only one of the apertures in the pattern to the microphone. The membrane assembly further includes a membrane that extends across the channel and separates the one of the apertures and the microphone.