An acoustic enclosure includes a housing at least partially defining an acoustic chamber for an acoustic radiator. The housing further defines an acoustic opening from the acoustic chamber to a surrounding environment. The acoustic enclosure also has a first acoustic resonator and a second acoustic resonator. The first acoustic resonator and the second acoustic resonator are acoustically coupled with the acoustic chamber in parallel relative to each other. Each of the first acoustic resonator and the second acoustic resonator modifies a frequency response of the acoustic chamber. Loudspeakers can include such an enclosure acoustically excited or driven by an electro-acoustic transducer. As well, an electronic device can include such a loudspeaker.

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.

Systems and apparatuses for a MEMS device. The MEMS device includes a diaphragm and a backplate spaced a distance from the diaphragm forming an air gap therebetween. The backplate includes a first surface facing toward the diaphragm and an opposing second surface facing away from the diaphragm. The first surface and the opposing second surface of the backplate cooperatively define a plurality of through-holes that extend through the backplate allowing air from the air gap to flow therethrough. Each of the plurality of through-holes include a first aperture disposed along the first surface, a second aperture disposed along the opposing second surface, and a sidewall extending between the first surface and the opposing second surface. The first aperture and the second aperture have different dimensions.

A miniature speaker and speaker cabinet are provided, wherein the speaker is enclosed in an oblong capsule with a sound output opening at one end and leads passing from a speaker coil inside the capsule to connection points externally on the capsule, and where the cabinet encloses the capsule and at one end thereof comprise a lead input opening with leads passing there through to the connection points on the capsule, and where the cabinet further comprise a sound exit opening opposite the lead input opening, which is in fluid communication with the sound output opening of the capsule, wherein the cabinet has an internal space surpassing external measures of the capsule in all directions defining a gap between the capsule and cabinet wherein the thus defined gap is filled out with a hardening silicone.

The present disclosure relates to microphones and electronic devices having the same. A microphone may include a housing for receiving vibration signals; a converting component inside the housing for converting the vibration signals into electrical signals, and a processing circuit for processing the electrical signals. The converting component may include a transducer and at least one damping film attached to the transducer.

An in-ear earphone includes a body configured to be placed at the entrance to or to be inserted at least in part into the auditory canal of a user's ear, the body housing an electro-acoustic driver and defining a passageway structure extending from the electro-acoustic driver to an opening in an outer surface of the body for allowing sound generated by the electro-acoustic driver to pass into the auditory canal of the user's ear. The passageway structure includes a flow divider section positioned to receive forward-radiated sound from the electro-acoustic driver, an output passageway extending from the flow divider section to the opening in the body, and an unvented enclosure in fluid communication with the flow divider section and operative to provide an acoustic impedance in parallel to the output passageway.

A cable assembly for electronic devices such as cellular telephones and music devices is disclosed. The cable assembly can comprise either one or two earpieces, each of which is configured to be received into the concha of a user's ear. The earpiece(s) can be configured so as to be held in place by at least one anatomical structure of the concha. A speaker can be in acoustic communication with each earpiece. A cable can be configured to communicate a signal representative of sound from the electronic device to each earpiece. A microphone can be permanently attached or removably attachable to the cable to facilitate use with a cellular telephone. The cable assembly can facilitate hands free operation of a cellular telephone and can facilitate listening to a music device. Other implementations and related methods are also disclosed.

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.

The present disclosure relates to a method of reducing sound leakage of a bone conduction speaker and a bone conduction speaker thereof. The bone conduction speaker comprises 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 wave and the leaked sound wave form interference so that the amplitude of the leaked sound wave is reduced.

This disclosure describes an apparatus and method of an embodiment of an invention that is a band-limited beamforming microphone array with acoustic echo cancellation that includes: a plurality of first microphones configured as a beamforming microphone array to resolve first audio input signals within a first frequency range, the beamforming microphone array includes acoustic echo cancellation; one or more additional microphone(s) configured to resolve second audio input signals within a restricted second frequency range such that the additional microphone(s) are coupled to the beamforming microphone array; augmented beamforming that processes audio signals from the beamforming microphone array and the additional microphone(s).