Abstract: A portable speaker is disclosed. The portable speaker includes a speaker, a light source, and a reflector. The speaker is adapted to produce sound. The light source is adapted to emit light. The reflector is adapted to redirect at least a portion of the light to illuminate one or more ground surfaces.

Abstract: The present disclosure provides a speaker, comprising a housing, a carrying board, a magnetic component, a magnetic conductive component, a voice coil, and a diaphragm component. The housing comprises an accommodating space and a rear cavity space communicated with the accommodating space. An area in the accommodating space communicating with the rear cavity space is an airflow area. The carrying board is disposed in the accommodating space. The magnetic component is disposed on the carrying board. The magnetic conductive component is disposed at the magnetic component. The voice coil is disposed in the magnetic component and the magnetic conductive component. The diaphragm component is disposed in the accommodating space, and is connected to the voice coil. Wherein, the magnetic component disposed in the airflow area comprises a first demagnetization configuration or/and the magnetic conductive component disposed in the airflow area comprises a second demagnetization component.

Abstract: An electronic device includes a cover body, a telephone receiver, a loudspeaker, and a first cavity. The telephone receiver is accommodated in the first cavity. There is a gap between the cover body and the telephone receiver as well as between the cover body and the loudspeaker. The gap is communicated with the first cavity, and is communicated with the external environment through a sound hole of the loudspeaker.

Abstract: A speaker includes a housing having a receiving space, a speaker unit and a cavity received in the receiving space, sound-absorbing particles filled in the filling cavity, a filling hole opened in the housing and communicating with the filling cavity for filling the sound-absorbing particles into the filling cavity, a hole cover covering the filling hole and a resilient member filled in the filling hole. The resilient member can deform in the height direction of the filling hole, and the resilient member is sandwiched in a compressed state between the hole cover and the sound-absorbing particles. Compared with the related art, the sound-absorbing particles of the speaker disclosed by the present disclosure are not easily damaged.

Abstract: The present document describes a textile-assembly toolkit for reversible assembly of a textile to an electronic-speaker device. The toolkit includes multiple attachment features, including rigid features with matched purposefully-designed knit types that can be combined to enable repeatable, mass-producible, reversible assembly of the textile to the electronic-speaker device. The techniques described herein enable accurate alignment of the textile on the electronic-speaker device without distorting the textile's cosmetic pattern and in a manner that results in no visible edges of the textile or visible attachment features on the exterior of the electronic-speaker device. Also, the textile-assembly toolkit includes attachment features that secure the textile with sufficient tension to avoid acoustic distortion such as rub and buzz.

Abstract: An accessory tray for a loudspeaker includes a main portion defining a perimeter and a base surface configured to support an accessory within the perimeter. An anchor portion extends under the base surface of the main portion, the anchor portion configured to engage a portion of the loudspeaker. The main portion has a tapering height from a rear to a front thereof, forming a rake angle in side view.

Abstract: At least one embodiment of the current invention provides a wireless audio assembly for use with recessed lighting fixtures and comprising: a wireless speaker, a powerbase module, a mounting support and a frame extension. The wireless audio assembly is attached to an existing recessed light, gets its power from recessed light power lines and has an opening in the center with a concave surface that appears as a continuation to the recessed light center opening.

Abstract: An accessory tray for a loudspeaker includes a main portion defining a perimeter and a base surface configured to support an accessory within the perimeter. An anchor portion extends under the base surface of the main portion, the anchor portion configured to engage a portion of the loudspeaker. The main portion has a tapering height from a rear to a front thereof, forming a rake angle in side view.

Abstract: An electronic device is provided. The electronic device includes a housing including an opening, a first cover disposed in the housing to close the opening and includes a first surface facing the outside and a second surface facing an internal space of the housing, at least one air vent formed from the first surface to the second surface in a region of the first cover to connect the outside of the electronic device to the internal space and includes a first space formed to have a specified depth in a direction starting from the first surface to the second surface, and a second space formed to have a specified depth in a direction starting from the second surface to the first surface, wherein the first space and the second space are connected, and a breathable waterproof member disposed to close the second space in the second surface.

Abstract: A sensor device includes a substrate having a front surface and an opposing back surface. The back surface defines an indented region having an indented surface. The substrate defines a bottom port extending between the front surface and the indented surface. The sensor further includes a microelectromechanical systems (MEMS) transducer mounted on the front surface of the substrate over the bottom port. The sensor also includes a filtering material disposed on the indented surface and covering the bottom port. The filtering material provides resistance to ingression of solid particles or liquids into the sensor device. The filtering material is configured to provide high acoustic permittivity and have low impact on a signal-to-noise ratio of the sensor device.

Abstract: An articulated vehicle speaker system includes a vehicle mount adapted to be mounted on a vehicle and a speaker assembly including front and back injection molded panels which, when joined together, define a speaker compartment at first and second ends of the panels to house a speaker unit and a central compartment which separates the speaker compartments. A pair of spaced, powered hinge assemblies are disposed within the central compartment and hingedly connect the speaker assembly to the vehicle mount to allow limited swinging movement of the speaker assembly between different positions on the vehicle. Each hinge assembly includes a bidirectional, electrically-powered actuator and transmission subassembly. Each subassembly including a rotary output shaft and a set of interconnected transmission elements coupled to the output shaft and to the speaker assembly to automatically swing the speaker assembly based on a command signal.

Abstract: An embodiment relates to a speaker and a speaker module. The speaker comprises a vibration system and a magnetic circuit system; the vibration system comprises a diaphragm and a voice coil coupled to the diaphragm; a space between a front side of the diaphragm and a front sound cavity cover forms a front sound cavity, and a space between a back side of the diaphragm and a rear sound cavity cover forms a rear sound cavity; wherein the speaker further comprises a plurality of injection molding inserts disposed along a vibration direction of the diaphragm, and the injection molding insert comprises a first end and a second end; the first end is joined with a surface of the front sound cavity cover close to the diaphragm, and the second end is joined with a surface of the rear sound cavity cover close to the diaphragm.

Abstract: A one-piece speaker having a built-in sound cavity includes a holder, a casing, a diaphragm, a voice coil, a washer, a magnet, a U-shaped cup, and a circuit board assembly. The speaker has its built-in sound cavity, so that the assembly is more convenient and flexible. The overall structure is simpler and easy to be produced. The sound cavity is larger, the sound sensitivity is better, and there is no need to distinguish between mid and low sounds. The bandwidth is larger, the response speed is faster, the signal frequency allowed to pass is high, the signal distortion is small, and the sound quality is better.

Abstract: An automobile visor organizer is taught which includes an area for storing a mobile device, an identification card, and a document. The mobile device storage area includes means for removably affixing a mobile device thereto. The invention includes a hook for removably holding an identification card, and a document aperture for storing a document therein. The invention includes a document guide on its backside for supporting the inserted document. The invention also includes a wireless charging pad with the mobile device storage area.

Abstract: Disclosed herein is an electronic device. In an embodiment, the electronic device may include a body, a display combined with the front of the body, and a speaker assembly embedded on at least one side of the body, wherein the speaker assembly may include a casing configured to form an external appearance and a speaker unit combined with the casing and configured to have at least part of an element of the speaker assembly exposed to an outside of the casing.

Abstract: Human biological change information in data form is obtained by one or more computer processing devices that utilize human biological change data from event data stream(s) and allows for ranking one or more changes in the biological change data. The data then correlates biological change data with ranking statistics from an event such that the correlation identifies and measures a magnitude of change of human biological responses from data acquired from event data stream(s). The correlation of human biological change data with ranking statistics creates one or more objects for storage and analysis within in one or more databases, wherein the objects possess time synchronized temporal human biological responses before, during or after an event. These objects also possess biological change data that utilizes correlation of biological change data with ranking statistics and results in objects that also contain one or more ranked values of the human biological responses.

Abstract: A lighting system includes a first luminaire. The first luminaire includes a first light source that generates a first light output. The first luminaire also includes a first visual feedback response source that generates a first visual feedback response output. Additionally, the first luminaire includes a first speaker that generates a first audio output. Further, the lighting system includes a second luminaire. The second luminaire includes a second light source that generates a second light output and a second visual feedback response source that generates a second visual feedback response output. Furthermore, the second luminaire includes a second speaker that generates a second audio output. The second audio output is different from the first audio output such that the first speaker and the second speaker output different audio components of a multichannel audio protocol output.

Abstract: Systems and methods for authenticating a passive speaker include (i) activating, by a playback device configured to drive the passive speaker, a passive speaker identification circuit of the passive speaker by providing an identification signal to an input terminal of the passive speaker, wherein the passive speaker is a particular type of passive speaker having particular characteristics; (ii) while the passive speaker identification circuit is active, measuring, by the playback device, an electrical current of the identification signal; (iii) determining, based on the measured electrical current of the identification signal, an impedance modulation of the passive speaker; (iv) determining, by the playback device, the particular type of the passive speaker based on the impedance modulation of the passive speaker; and (v) applying, by the playback device, a calibration to the playback device based on the determined particular type of the passive speaker.

Abstract: Provided is a terminal device, an audio processing method, and a storage medium. The terminal device at least comprises: a housing, which has a flexible structure and is configured to bent at the flexible structure; an audio cavity component located within the housing and is configured to deform along with the deformation of the housing to form a corresponding deformation state; and a processing component, which is configured to determine, based on the deformation state of the audio cavity component, an audio processing parameter matching the deformation state of the audio cavity component.

Abstract: A speaker unit emits a sound towards a box-like space formed by a vehicle. The speaker unit is accommodated in an enclosure. At least one of the enclosure and the speaker unit is provided with a tubular member and/or a vibration member configured to generate a resonance sound of a frequency different from a lowest resonance frequency of the speaker unit. At least a part of the enclosure also serves as a body of the vehicle.

Abstract: In accordance with an embodiment a package includes: a package structure which defines inner surfaces delimiting an inner volume and outer surfaces directed towards an exterior of the package; at least one acoustic sensor element applied to at least one of the inner surfaces, to convert acoustic waves arriving from the exterior of the package into acoustic information in the form of electric signals; a plurality of millimeter wave sensing elements applied to at least one of the outer surfaces, to receive reflected radar signals from objects in the exterior of the package; and a circuitry applied to at least one of the inner surfaces of the package structure, wherein the circuitry is electrically connected to the at least one acoustic sensor element and the plurality of millimeter wave sensing elements to process the acoustic information and the reflected radar signals.

Abstract: Disclosed herein is an electronic device. In an embodiment, the electronic device may include a body, a display combined with the front of the body, and a speaker assembly embedded on at least one side of the body, wherein the speaker assembly may include a casing configured to form an external appearance and a speaker unit combined with the casing and configured to have at least part of an element of the speaker assembly exposed to an outside of the casing.

Abstract: Methods and apparatus determine the actual state of one or more acoustic valves e.g., whether an acoustic valve is open or closed, in a hearing device. A sensor in the hearing device is configured to generate an output signal indicative of a state of the acoustic valve. An electrical circuit actuates the acoustic valve if the actual state is different than a desired state. The determination of the state of the acoustic valve can be done on the hearing device or on a remote device.

Abstract: A speaker is provided. The speaker includes: an electrical connector and a voice coil. The electrical connector includes an elastic arm and a connection portion. The voice coil includes an outer side surface close to the elastic arm and an inner side surface opposite to the outer side surface, each of the joint portions includes a body portion supported at a side of the voice coil facing away from the diaphragm, a first extension portion formed by extending from the body portion and being opposite to the inner side surface, and a second extension portion formed by extending from the body portion and being opposite to the outer side surface, the first extension portion and the second extension portion are spaced apart to form a receiving groove, and the voice coil is sandwiched and fixed in the receiving groove.

Abstract: Provided is a speaker including: a holder having a receiving space; a vibration unit received in the receiving space; and a magnetic circuit unit received in the receiving space and configured to drive the vibration unit to vibrate and sound, the magnetic circuit unit comprising a magnetic frame and a magnet received in the magnetic frame. The magnetic frame includes: a bottom wall connected to the magnet; a sidewall formed by extending from the bottom wall while being bent the vibration unit; and a leakage hole penetrating through the magnetic frame. The leakage hole is provided at a position where the bottom wall and the sidewall are connected and is in communication with the receiving space, and the leakage hole comprises a first portion penetrating through the bottom wall and a second portion penetrating through the sidewall, the first portion and the second portion being in communication with each other.

Abstract: A speaker is provided. The speaker includes: an electrical connector and a voice coil. The electrical connector includes an elastic arm spaced apart from the voice coil and joint portions extending from two opposite sides of the elastic arm while being bent towards the voice coil. The joint portions are supported at a side of the voice coil facing away from the diaphragm. Each of the joint portions is provided with a binder portion configured to fix the voice coil to the joint portion. The voice coil includes an outer side surface close to the elastic arm and an inner side surface opposite to the outer side surface. The binder portion is provided at two sides of the voice coil and is bonded with the inner side surface and the outer side surface.

Abstract: The present disclosure provides a speaker box which includes a shell, a speaker, an acoustic guiding channel, an auxiliary acoustic cavity, a baffle and a cover plate. The diaphragm of the speaker separates the receiving space into a front acoustic cavity and a rear cavity, the acoustic channel communicates the front acoustic cavity with the outside to form a front cavity. The auxiliary acoustic cavity is provided with a first through-hole in communication with the front cavity and a second through-hole in communication with the outside, and the baffle completely covers the first through-hole. The baffle is provided with a channel penetrating therethrough, and the auxiliary acoustic cavity is in communication with the front cavity through the channel. The cover plate completely covers the second through-hole and forms a fixed. Compared with the related art, the high-frequency acoustic performance of the speaker box of the present disclosure is excellent.

Abstract: A speaker includes a housing and a sound unit accommodated in the housing. A sound outlet is disposed on one side wall of the housing, a front cavity is formed between the sound unit and the housing, a front cavity channel and a side cavity on one side of the front cavity channel are disposed in the housing, and the front cavity channel is connected between the front cavity and the sound outlet. The speaker further includes a connecting channel formed by injection molding, and the connecting channel is connected between the side cavity and the front cavity channel. The connecting channel includes a bottom wall, a side wall which extends from the bottom wall, and a top wall connected to the side wall.

Abstract: The present disclosure provides a speaker box which comprises a shell, a speaker, a support wall, and a sound guide channel. The speaker is fixed to be supported on the support wall. The diaphragm of the speaker partitions the receiving space into a front sound cavity and a rear cavity. The sound guide channel communicates the front sound cavity with the outside and forms the front cavity with the front sound cavity. The speaker box also comprises a surrounding wall and a cover plate arranged on the surrounding wall. The surrounding wall is located on the outside of the support wall, and the shell, surrounding wall, support wall and cover plate are jointly enclosed as auxiliary acoustic cavity. Compared with the related art, the high frequency acoustic performance of the speaker box of the present disclosure is excellent.

Abstract: A speaker box is provided in the present disclosure. The speaker box comprises a shell, a speaker, a sound guiding channel, an auxiliary sound cavity, a baffle, a cover plate and a sound absorber. The diaphragm of the speaker separates the receiving space into a front sound cavity and a rear cavity, the sound guiding channel communicates the front sound cavity with the outside. The auxiliary sound cavity is provided with the first through hole communicating with the front cavity and the second through hole communicating with the outside, and the baffle completely covers the first through hole. The baffle is provided with a channel, and the auxiliary sound cavity communicates with the front cavity through the channel. The cover plate covers the second through hole. Compared with the related art, the high frequency acoustic performance of the speaker box of the present disclosure is excellent.

Abstract: A headset and method for controlling pressure in the ears of a user is disclosed. The headset includes a headband, a control earpiece connected to the headband, an earpiece connected to the headband, and a control system housed in the control earpiece and the earpiece to manually and/or automatically control the pressure in each of the control earpiece and the earpiece. In one embodiment, the pressure in each of the control earpiece and the earpiece is manually controlled by increasing and/or decreasing the pressure in each of the control earpiece and the earpiece. In another embodiment, the pressure in each of the control earpiece and the earpiece is automatically adjusted in a ground pressure mode, an ascent mode, and/or a descent mode.

Abstract: An audio attenuation device for attenuating audio for transmission to an unborn baby includes a body and an attachment mechanism for attaching the body to an article of clothing of an expectant mother. The body is configured to receive at least one audio earbud that includes an audio producing side from which an audio signal is transmitted from the earbud. The body further includes a layer of material configured to be positioned in contact with the audio producing side to receive the audio signal from the earbud and to attenuate an intensity of the audio signal. The layer of material is configured such that, when the audio signal that is received by the layer of material has a maximum sound level of approximately 90 decibels or greater, the attenuated audio signal exiting the layer of material has a maximum sound level between approximately 45 and 85 decibels.

Abstract: A speaker sound system assembly comprises an enclosure; a speaker mount housing covering the opening of the enclosure, the speaker mount housing including a hole that exposes an interior of the enclosure and concave horn walls on both sides of the hole; a first speaker positioned in the hole of the speaker mount housing, the horn walls of the speaker mount housing constructed and arranged to determine a shape of a coverage pattern of the first speaker; and a driver array comprising at least three second speakers and extending from one side of the speaker mount housing to the other side of the speaker mount housing in front of the first speaker, the speaker mount housing constructed and arranged to match a desired coverage pattern of the driver array.

Abstract: A case for a portable electronic device configured to provide protection for the electronic device and further provide storage for one or more corded-accessories for use with the electronic device, including, but not limited to, headphones. The electronic device case includes a case member configured to cover at least a portion of an electronic device and a spool member configured to retain a pair of headphones. The case member includes a cavity configured to receive the spool member and one or more channels in fluid communication with the cavity configured to receive portions of headphone cord. The case member further includes recesses in fluid communication with the one or more channels and configured to receive and retain the headphone earphones within. The case member further includes a means of releasably retaining the spool member within the cavity of the case member.

Abstract: An acoustic sensor integrated MEMS microphone structure and a fabrication method thereof. A diaphragm (3e) and back-pole (7) which forms a condenser structure are formed on a substrate (1) having at least one recessed slot (1a) on the top. A sensitive electrode is formed on the substrate (1), the sensitive electrode comprising a fixed portion (3b) fixed on the substrate (1) via a sacrificial layer (2), and a bending portion (3a) inserted into the recessed slot (1a), wherein the bending portion and the side wall of the recessed slot form the condenser structure. The integrated structure integrates the condenser structure of the microphone and condenser structure of the acoustic sensor on a substrate (1), thereby increasing the integration level thereof and reducing the overall size of the package.

Abstract: In a sound generating device, a connection terminal made of a metal plate material electrically connected to an external equipment has a groove portion in a portion protruding inward of a base. A terminal fitting made of a metal plate material and electrically connected to the sounding body includes a terminal fitting main body that is mechanically joined to the sounding body, and a protrusion plate portion that extends from the terminal fitting main body portion and is press-fitted to the groove portion. The protrusion plate portion press-fitted to the groove portion of the connection terminal is provided integrally with the terminal fitting.

Abstract: A speaker and conference call module and mobile device case combination allows a mobile device, such as a smartphone, to be retained by the mobile device case. The speaker and conference call module is configured to wirelessly connect to the mobile device to permit audio from the mobile device to be played threreupon. The speaker and conference call module further includes a microphone to permit audio pick-up by the module and deliver that audio signal to the mobile device, permitting two-way conference call features. The speaker and conference call module can produce sound via one or more exciter voice coils internally attached to the front surface thereof, where the front surface may be a material suitable for sound generation via an exciter, such as a carbon fiber material. The speaker and conference call module can be removed from and reattached to the mobile device case for convenient portability.

Abstract: An electronic device includes an internal microphone that is located remotely from a microphone aperture formed in the enclosure of the electronic device. An acoustic chamber is formed within the electronic device to couple the microphone to the microphone aperture. The acoustic chamber is designed with a particular length to volume ratio that amplifies a particular range of frequencies such that the microphone maintains equal sensitivity to a desired frequency band.

Abstract: A portable auxiliary unit for coupling with a mobile audio player is disclosed. The auxiliary unit provides both auxiliary power input and auxiliary audio output for the player, as well as a protective casing in the form of a receiving cup open on a top side. The receiving cup provides access to inputs and outputs on the audio player accessible by cabling from the auxiliary unit installed when an access panel is opened. The auxiliary unit has an integral rechargeable battery pack and a speaker assembly connectable to the audio player via the cables.

Abstract: Nyquist filters for pulse shaping and related matched filters in wireless communications are disclosed that provide improved performance. The disclosed embodiments recognize that the second derivative of the raised cosine function is discontinuous in the frequency domain and that the first derivative of the square root raised cosine is discontinuous in the frequency domain. As such, a generalization for the raised cosine filter is applied, and improvements can be made to the raised cosine function time-frequency localization and ultimately to tradeoffs between inter-symbol interference and adjacent channel interference by introducing smoothness to the higher order derivatives of the frequency response.

Abstract: In a particular aspect, a multimedia device includes one or more sensors configured to generate first sensor data and second sensor data. The first sensor data is indicative of a first position at a first time and the second sensor data is indicative of a second position at a second time. The multimedia device further includes a processor coupled to the one or more sensors. The processor is configured to generate a first version of a spatialized audio signal, determine a cumulative value based on an offset, the first position, and the second position, and generate a second version of the spatialized audio signal based on the cumulative value.

Abstract: Headphones include removable audio drivers electrically coupled with electrical conductors using solderless and detachable interconnections. Driver assemblies for headphones include an audio driver and a driver unit housing. An acoustical cavity is defined between the driver unit housing and the audio driver, and a port extends through the driver unit housing between the acoustical cavity and the exterior of the driver assembly. The driver unit housing is configured to be secured within an outer ear-cup housing of a headphone such that the port is open to the exterior of the headphone without communicating acoustically with a volume outside the driver unit housing and within the outer ear-cup housing. Headphones include such driver assemblies. Methods are used to form such headphones and driver assemblies.

Abstract: In some embodiments, apparatuses, and methods are provided herein pertaining to sound analysis in a shopping facility. In some embodiments, a system comprises one or more sound sensors distributed throughout at least a portion of a shopping facility and configured to receive at least sounds resulting from activity in the shopping facility and a control circuit, the control circuit configured to receive, from at least one of the one or more sound sensors, audio data, receive an indication of an employee, correlate the audio data and in the indication of the employee, and determine, based at least in part on the audio data and the indication of the employee, a performance metric for the employee.

Abstract: Integrated protective mesh techniques are described herein. In one or more implementations, a computing device includes electronic components attached to circuitry for the computing device, such as a flexible printed circuit (FPC). The electronic components are sensitive devices such as audio components and other sensors that rely on exposure to environmental inputs for operation and that may be adversely impacted by external contaminants (water, dust, ferritic material, etc.). To provide for proper operation of the electronic components, a housing for the computing device includes a port for the electronic components that extends from outside of the housing to an interior of the housing to create a pathway through the housing. A protective mesh is assembled as an integrated component of the circuitry (e.g., FPC) and configured to align with the port to protect the electronic components from passage of contaminants through the pathway created by the port.

Abstract: A differential microphone array includes a plurality of microphones situated on a substantially planar platform, the plurality of microphones including a total number (M) of microphones and at least two subsets of the plurality of microphones situated along at least two substantially concentric ellipses with respect to a center, and a processing device, communicatively coupled to the plurality of microphones, to receive a plurality of electronic signals generated by the plurality of microphones responsive to a sound source and execute a minimum-norm beamformer to calculate an estimate of the sound source based on the plurality of electronic signals, in which the minimum-norm beamformer has a differential order (N), and wherein M>N+1.

Abstract: A speaker and conference call module and mobile device case combination allows a mobile device, such as a smartphone, to be retained by the mobile device case. The speaker and conference call module is configured to wirelessly connect to the mobile device to permit audio from the mobile device to be played thereupon. The speaker and conference call module further includes a microphone to permit audio pick-up by the module and deliver that audio signal to the mobile device, permitting two-way conference call features. The speaker and conference call module can produce sound via one or more exciter voice coils internally attached to the front surface thereof, where the front surface may be a material suitable for sound generation via an exciter, such as a carbon fiber material. The speaker and conference call module can be removed from and reattached to the mobile device case for convenient portability.

Abstract: Aircraft, aircraft exterior speaker systems, and methods of projecting sound waves from an exterior of an aircraft are provided. An aircraft includes an outer skin membrane, a vibration actuator, and a controller. The outer skin membrane has an exterior surface that defines an exterior boundary of the aircraft. The vibration actuator is coupled for common vibration with the outer skin membrane. The controller is operatively coupled with the vibration actuator and is configured to generate a command for the vibration actuator based on audible content to be projected from the exterior surface. The controller is further configured to transmit the command to the vibration actuator. The vibration actuator is configured to vibrate in response to receiving the command.

Abstract: An electroacoustic transducer includes a driver, a diaphragm 13 driven to vibrate by the driver and emitting sound, a baffle 21 holding the diaphragm 13, first apertures 25 extending from the front surface to the rear surface of the baffle 21, and a first acoustic resistor 22 disposed on the front surface of the baffle so as to cover the first apertures. The electroacoustic transducer includes a plurality of sound paths for guiding the sound generated by the diaphragm 13 to the rear surface of the baffle 21.

Abstract: One embodiment of the invention discloses an acoustic device having a housing including a receiving space and a sound hole communicating with the receiving space; a vibration unit received in the receiving space; a magnetic circuit unit driving the vibration unit to vibrate; wherein, the vibration unit includes a first part away from the sound hole and a second part close to the sound hole; and the first part is driven by a higher magnetic force generated by the magnetic circuit unit than the second part.

Abstract: There is provided an acoustic element for placement in a sound path of a loudspeaker device, the acoustic element comprising a container and an acoustic volume increasing material located in the container. In an embodiment, the container comprises wall portions with different physical characteristics. In other embodiments, the walls of the container are made of the same material.