Abstract: A miniature receiver or transducer with improved viscous damping. The receiver may be a moving armature receiver using shearing forces for damping the deflection of the diaphragm. In this receiver, the damping element, which may be a liquid, extend in a direction of the deflection of the armature or diaphragm. Another embodiment relates to a transducer where the damping element engages the diaphragm.

Abstract: A microphone assembly comprising a transducer for receiving sound and outputting a corresponding control signal. The assembly also comprises means for detecting a magnetic field and outputting a signal relating to the field. A hearing aid comprising the assembly has a processor receiving the control signal and selecting between the microphone signal and a signal relating to the magnetic field, such as a signal received from a telephone hand set or a telecoil.

Abstract: A hearing aid and a receiver for use therein, the receiver being tip-mountable in a chamber of a housing. The back chamber of the receiver is acoustically connected to the chamber of the housing. The receiver is a dual-diaphragm receiver providing no or very little vibrations, whereby the receiver is fixedly but removably mounted to the housing. Electrical connections are provided between the receiver and housing using solderless, biasing electrical contacts, whereby removal of the receiver is facilitated.

Abstract: A microphone assembly comprising a transducer for receiving sound and outputting a corresponding control signal. The assembly also comprises means for detecting a magnetic field and outputting a signal relating to the field. A hearing aid comprising the assembly has a processor receiving the control signal and selecting between the microphone signal and a signal relating to the magnetic field, such as a signal received from a telephone hand set or a telecoil.

Abstract: A microphone assembly comprising a housing in which a transducer element is positioned. In the housing, an upper and a lower chamber are defined, the lower chamber extending at least at one edge of the transducer element and potentially to an upper side thereof. An element, such as a horse-shoe shaped element or a circular element, is provided for separating the upper side of the transducer element into the upper and lower chambers. The transducer element is fixed using flexible fixing means, and space is provided at one or more sides of the transducer element to take up thermal expansion and retraction of the housing and the transducer element.

Abstract: Apparatus and method for manufacturing an electroacoustic transducer for, for instance, a hearing aid, with a diaphragm arranged in a housing. The diaphragm is attached onto a film or punched from a sheet of material, such that along the circumferential edge of the diaphragm, a free strip of film or a strip of material remains present, in a capillary space between the circumferential edge of the film and the inner wall of the housing, or in a capillary space between the diaphragm and the strip of material, a polymer of a low viscosity is provided to connect to diaphragm with the housing wall. Through the method, the production of the transducer is greatly simplified.

Abstract: A receiver or loudspeaker having a plurality of sound generators each having a housing and a sound output. An oblong channel is formed by a channel-forming element and parts of the housings. The sound outputs are positioned on one side of a middle of the channel and a outlet of the channel is positioned on the other side of the middle of the channel so that the channel has a length adapted to acoustically alter the sound. The use of the housings for forming the channels provides a more compact structure.

Abstract: An acoustic receiver comprises means for converting an input audio signal into an acoustic signal. The receiver has a housing having a plurality of sides that surround the converting means. One of the sides include an output port for broadcasting the acoustic signal. A jacket fits around the housing and has sections for engaging the sides. The sections are generally flat. The jacket may also form a gap with a corresponding side surface of the housing. A printed circuit board can be located within the gap. The printed circuit board including electronics for processing said input audio signal.

Abstract: The present invention relates to improvements in acoustical venting of hearing aid earmolds and to miniature loudspeakers with housing structures configured to support improved hearing aid venting. The miniature loudspeaker comprises a front chamber with first and second separate sound ports so as to allow the front chamber to form an integral part of the acoustical vent of the hearing aid earmold. Thus, while using the same opening in the hearing aid for both sound output and venting, sound from the outside of the hearing aid may be introduced into the users ear via the same opening.

Abstract: The invention relates to an assembly comprising a sound emitter and at least two sound detectors fixed to each other, wherein each detector has a sound receiving opening. The sound receiving openings of at least two of the detectors point in opposite directions.

Abstract: A condenser microphone is provided having a transducer element. A diaphragm has an electrically conductive portion. A back-plate has an electrically conductive portion. A DC bias voltage element is operatively coupled to the diaphragm and the back-plate. A collapse detection element is adapted to determine a physical parameter value related to a separation between the diaphragm and the back-plate. A collapse control element is adapted to control the DC bias voltage element based on the determined physical parameter value.

Abstract: The invention relates to a microphone assembly comprising a housing, a microphone element within the housing, a base element, contacting elements, a removable element, and connecting means. The housing is configured such that it may be opened and re-closed. The base element is positioned inside the housing and comprises one or more first electrical conductors. The base element comprises one or more first conducting surface parts connected to one or more of the first conductors. The contacting elements facilitate electrical contact between one or more of the first conductors and one or more conductors positioned outside the housing. The removable element is positioned within the housing and comprises one or more second electrically conductive surface parts. The connecting means provides an easily breakable/removable electrical connection between a first surface part and a second surface part.

Abstract: An electroacoustic transducer employing a polymer connection for maximizing volume displacement. The transducer includes a diaphragm in a case and means for converting. The diaphragm includes a central portion. The means for converting converts between an electric signal and a vibration of the central portion of the diaphragm or vice versa while the diaphragm is coupled to the case. The central diaphragm has an outer edge, and between the outer edge and the inner wall of the transducer case a capillary space is present in which a polymer is provided as a coupling between the outer edge and the inner wall of the case.

Abstract: Microphone is disclosed having unmatched electroacoustic transducers. The microphone may be a traditional ECM microphone, or it may be a MEMS microphone. Each of the unmatched electroacoustic transducers may have its own peak frequency selected so that the electroacoustic transducers together produce a desirable resultant peak frequency. The unmatched electroacoustic transducers may have different package sizes, front volumes, back volumes, and/or diaphragm tensions, thicknesses, lengths, widths, and/or diameters. In some embodiments, the microphone may have different backplate charging and/or output signal amplification schemes for the electroacoustic transducers. Where the microphone is a MEMS microphone, voltage generation and output signal amplification are provided by an integrated circuit that may be mounted either within a front volume of one of the electroacoustic transducers or adjacent to one of the electroacoustic transducers.

Abstract: An connector assembly for use in, for example, a hearing aid, the assembly having a first connector and a second connector adapted to be detachably attached and being able to transport both sound and electric signals. The invention also relates to an assembly comprising the connector assembly and having a first part comprising an electrical input and a sound providing receiver as well as both an audio output and an electrical output. The two outputs are connected to a second element, normally for positioning inside an ear canal of a person, the second element having a receiver for receiving the electrical signal from the first elements and providing a corresponding sound which is mixed with the sound output by the second element, the mixed sound being output from the second element. The receiver of the first element may be a woofer, and the receiver of the second element may be a tweeter.

Abstract: A microphone assembly having a housing, a transducer, and an electronic circuit. The housing has an opening, and the transducer is disposed within that opening. The electronic circuit covers the opening such that the transducer is surrounded by at least the electronic circuit and the housing. The electronic circuit includes a substrate and an amplifier for amplifying the electrical signal into an amplified electrical signal which is coupled to a connection means. The connection means provides a direct electrical connection between the electronic circuit and a receiver. The amplifier is mounted on the substrate and disposed on a side of the substrate of the electronic circuit facing the transducer. The receiver is disposed on a side opposite the side and outside the housing.

Abstract: The present invention relates to a receiver module being adapted to be positioned in an ear canal, the receiver module comprising a receiver having a receiver housing, said receiver being adapted to receive a time dependent electrical signal, said receiver further being adapted to generate outgoing acoustic waves via an output port in the receiver housing in response to the received time dependent electrical signal, and expansible means surrounding at least part of the receiver housing, said expansible means having an opening aligned with the output port of the receiver housing so as to allow the generated outgoing acoustic waves to penetrate away from the receiver module and into the ear canal.

Abstract: An acoustic receiver comprises means for converting an input audio signal into an acoustic signal. The receiver has a housing having a plurality of sides that surround the converting means. One of the sides include an output port for broadcasting the acoustic signal. A jacket fits around the housing and has sections for engaging the sides. The sections are generally flat. The jacket may also form a gap with a corresponding side surface of the housing. A printed circuit board can be located within the gap. The printed circuit board including electronics for processing said input audio signal.

Abstract: An electroacoustic transducer employing a polymer connection for maximizing volume displacement. The transducer includes a diaphragm in a case and means for converting. The diaphragm includes a central portion. The means for converting converts between an electric signal and a vibration of the central portion of the diaphragm or vice versa while the diaphragm is coupled to the case. The central diaphragm has an outer edge, and between the outer edge and the inner wall of the transducer case a capillary space is present in which a polymer is provided as a coupling between the outer edge and the inner wall of the case.

Abstract: The present invention relates to an electro-acoustic transducer suitable for applications within mobile communication equipment and hearing aids. The transducer comprises two diaphragms positioned on opposite sides of a magnetic circuit having two magnetic gaps. When used as a microphone the transducer is substantially insensitive to vibrations, and when used as a speaker the transducer generates only very low vibration levels. The magnetic circuit has a number of advantages compared to conventional transducers with circular magnetic. The transducer can be made lightweight and with very compact dimensions compared to conventional designs. In a preferred embodiment the diaphragms are rectangular. The transducer may additionally be used as a vibration generator for silent alarm signals.