Abstract: A diaphragm includes a central portion in a center of the diaphragm and an external portion surrounding the central portion. The central portion includes a central section in a center of the central portion, a peripheral section at an outer periphery of the central portion and a connecting section between the central section and the peripheral section. The peripheral section forms at least one protrusion.

Abstract: A condenser microphone is disclosed. The condenser microphone includes a substrate having a cavity, a supporting member connected to the substrate, and a diaphragm isolated to the supporting member. The supporting member has a periphery portion and a plurality of stationary electrodes extending from the periphery portion to a center of the supporting member. The diaphragm has a vibrating member and a sustaining member connected to the vibrating member and the vibrating member defines a plurality of movable electrodes protruding from a periphery of the vibrating member. Each of the movable electrodes is located between two adjacent stationary electrodes and each of the stationary electrodes is located between two adjacent two movable electrodes.

Abstract: Headphones capable of giving an optimum mounting feeling to the head of everybody by merely being mounted and without special adjustment, and also capable of being mounted for many hours without giving stress to the user. A headphone cabinet is connected to one end of a link arm, a head pad is provided at the other end of the link arm, and a lateral pressure produced by a spring member is distributed to the headphone cabinet and the head pad via the link arm.

Abstract: An apparatus includes a headphone. The headphone includes at least one housing; and at least one sound wave generator disposed in the housing. The sound wave generator includes at least one carbon nanotube structure.

Abstract: A loudspeaker includes an enclosure and at least one sound wave generator disposed in the enclosure. The sound wave generator includes at least one carbon nanotube structure. The carbon nanotube structure is capable of converting electrical signals into heat. The heat is transferred to a medium and causes a thermoacoustic effect.

Abstract: The present invention provides a wired control of an earphone. The wired control includes a ring and a body. The ring defines an elastic material structure and a plurality of rails. The body defines at least one protrusion which is mounted with a plurality of circuit boards, wherein each circuit board is electrically mounted with a switch thereon; the ring is rotatably mounted on the body; and each switch is operable in response either to the elastic material structure being pressed or to the rails of the ring being rotated. When one of the switches is activated by the movement of the ring, the circuit board corresponding to the activated switch generates a trigger signal.

Abstract: A speaker system includes an enclosure, a first speaker unit for low frequency and a plurality of second speaker units for high frequency. The enclosure includes a front plate portion which is a baffle plate and a rear plate portion. A length of the rear plate portion in a first direction perpendicular to a forward and backward direction is shorter than a length of the front plate portion in the first direction. The first speaker unit and the second speaker units are mounted to the front plate portion. The plurality of second speaker units are arranged in the first direction. Vibration plates of the plurality of second speaker units are located in the vicinity of the front plate portions in the forward and backward direction.

Abstract: The assembly includes a miniature electroacoustic transducer and a flexible electrical wire. The flexible electrical wire is terminated by a connecting element with an electrically conductive shoulder portion. The miniature electroacoustic transducer comprises an electrically conducting, externally accessible terminal having a slot structure formed therein. The slot structure is configured to mechanically and electrically engage the electrically conductive shoulder portion of the connecting element.

Abstract: An electrostatic ultrasonic transducer includes a first electrode that has through-holes, a second electrode that has through-holes, and a vibrating membrane that is disposed such that the through-holes of the first electrode and the through-holes of the second electrode form a pair, interposed between a pair of electrodes composed of the first electrode and the second electrode, and having a conductive layer applied with a direct current bias voltage. The first electrode and the second electrode each have counter electrode portions that are formed in the through-holes to face the vibrating membrane, and a modulated wave, which is obtained by modulating a carrier wave in an ultrasonic frequency band with a signal wave in an audible frequency band, is applied between the pair of electrodes.

Abstract: A transducer including a frame and a panel disposed within the frame and coupled to the frame such that the panel may rotate relative to the frame about a rotational axis. The transducer includes an actuator positioned to engage the panel such that the panel rotates about the rotational axis.

Abstract: A hearing device and method for monitoring the hearing ability of a person with impaired hearing allow changes of the hearing ability specifically of a person wearing a hearing aid are to be better able to be registered and taken into account. For this purpose, the setting of an operating element, this serves for setting an output sound level of a hearing device. Furthermore, the ambient sound level in the vicinity of the hearing device is measured. After that, the current setting is compared with the current, measured ambient sound level and a corresponding control signal is output dependent on the result of the comparison. This control signal serves, for example, for signaling to the wearer of a hearing aid the loss of hearing or the automatic adjustment of the hearing aid.

Abstract: A capacitor microphone is constituted by a plate having a fixed electrode, a diaphragm including a center portion and at least one near-end portion that is fixed to the outer periphery, in which the center portion having a vibrating electrode, which is positioned relative to the fixed electrode and which vibrates in response to sound waves, is increased in rigidity in comparison with the near-end portion; and a spacer that is fixed to the plate and the near-end portion of the diaphragm and that has an air gap formed between the plate and the diaphragm. Alternatively, a diaphragm electrode is horizontally supported by extension arms extended from a circular plate thereof and is vertically held in a hanging state being apart from a fixed electrode with a controlled distance therebetween.

Abstract: In acoustic systems, especially with hearing aids, feedback whistling keeps occurring. To avoid this, a limit gain frequency response of the amplification device, which represents the limits of feedback whistling, is thus recorded. On the basis of the curve recorded a required gain frequency response with a number of interpolation points is created, with each interpolation point having a predetermined minimum distance in each case to the limit gain frequency response in at least two different directions. This enables feedback whistling to be largely avoided, even with shifts in resonant frequencies.

Abstract: A preamplifier arrangement for a drum microphone, in which drum the microphone is arranged inside the drum and wherein the microphone is connected to a preamplifier, characterized in that the preamplifier is secured to the side wall or bottom of the resonance chamber of the drum via a mounting arrangement comprising a threaded part, which is fastened to the preamplifier and fitted through a hole in the side wall or bottom, and a counterpart for it.

Abstract: An eartip that includes at least one acoustic material filled port is provided. The port and the acoustic material contained therein provide the eartip with a controlled acoustic leakage path, thus allowing the user to tailor the performance of the earphones to which the eartips of the invention are attached. The provided eartip is attachable to a standard, generic earpiece, for example through the use of interlocking members (e.g., channel/lip arrangement). At least one port, in addition to the central opening by which the eartip is attached to the earphone, extends through the eartip. The port can have a circular cross-section, arcuate cross-section, or other shape. If desired, for example to increase the port area, the eartip can be designed with multiple ports surrounding the central opening. Within the port is an acoustic material with the desired acoustic impedance. The eartip can be coded to allow identification of the acoustic qualities of a particular eartip.

Abstract: Various embodiments provide systems, methods and assemblies for in situ removal of cerumen from hearing devices positioned in the ear canal. One embodiments provides a fitting for in situ cerumen removal comprising a top portion shaped to be removably coupled to a hearing device component surface and a plurality of leg members extending axially from a perimeter of the top portion. The top portion has a plurality of openings and at least one flexible retaining element configured to releasably engage a retaining feature on the hearing device. The leg members are configured to fit over another surface of the hearing device component. The fitting is configured to remove cerumen obstructing a feature on the device component and can be removed from the device component without removing the hearing device from the ear canal. The fitting can also include a removal loop that has a non-deployed state and a deployed state.

Abstract: An insert high fidelity earphone is provided in which a hollow housing is connected to two tubes. A first tube is connected to the hollow housing on one side, and on the other side is inserted into an ear tip that ensures substantial sealing of the ear canal. A second tube is connected to hollow housing on one side and houses a cable that connects circuitry in the hollow housing to an audio source. The first tube comprises a damping assembly. The first tube comprises grooves on the inside wall that ensure that the damping assembly only fits in one orientation, which is the correct orientation. The damping assembly may be easily replaceable, without having to replace the entire earphone. The earphone may have a curved shape providing a comfortable and nearly invisible fit into the ear canal.

Abstract: A hearing aid is identified by storing a binary code in the hearing aid, receiving a transmitted code, reading out a subset of bits from the stored binary code, and comparing the transmitted code with the subset for identification. The reading step preferably reads the lowest order nibble, byte, or word of the binary code. In accordance with another aspect of the invention, a charger for the hearing aid, a controller for the hearing aid, and a programmer for the hearing aid store the identification codes for two way communication among the devices.

Abstract: The protection of the ports of a hearing device, in particular microphone ports, is to be more easily operable in terms of installation and replacement. Provision is made for this purpose for protection to be provided by an adhesive film with a plastic membrane, which is essentially acoustically permeable, and an adhesive layer, which is attached to the plastic membrane. The adhesive is cut out in a predetermined shape at least one specified location on the plastic membrane. It is thus possible to affix an easily operable common microphone protection system to the hearing device shell, for example for a directional microphone with several microphone ports.

Abstract: A hearing device has an adjustable transfer function comprising M?1 sub-functions (M is an integer). A method for operating the hearing device includes deriving input audio signals from a current acoustic environment. For each of the M sub-functions, derive, based on the input audio signals and for each class of N?2 classes that describe a predetermined acoustic environment, a class similarity factor indicative of the similarity of the current acoustic environment with the predetermined acoustic environment described by the respective class (N is an integer). Derive from N predetermined base parameter sets assigned to the respective sub-function and in dependence of the class similarity factors, an activity parameter set for the respective sub-function. Each of the N base parameter sets assigned to the respective sub-function is assigned to a different class of the N classes. Adjust the respective sub-function by means of the activity parameter set.