Abstract: A transducer assembly may include a first transducer having a first front volume, a first back volume and a first port acoustically coupled to the first front volume; and a second transducer having a second front volume, a second back volume and second port acoustically coupled to the second front volume. The first front volume and the second front volume are acoustically coupled to increase the effective back volume of both the first transducer and the second transducer. An optional signal processing circuit may be used to control the output of the first transducer based upon a signal received from the second transducer.

Abstract: An air deflector is positioned relative to the through bore in the pole piece of the motor structure of a speaker such that the flow of air entering and leaving a cavity overlying the voice coil and pole piece is directed along a flow path which passes in thermal communication with at least a portion of the inner surface of the former of the voice coil opposite the wire winding on the outer surface of the former.

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: An electric-acoustic transducer/housing assembly includes an electric-acoustic transducer and a housing within which the electric-acoustic transducer is arranged. The electric-acoustic transducer includes a casing, a first and second vibratory plates transversely mounted within the casing, and an exciter disposed between the first and second vibratory plates and operated to vibrate the first and second vibratory plates. The first vibratory plate cooperates with the exciter to define a first inner chamber therebetween. A sound pipe extends outwardly from the casing and is adapted to allow the first inner chamber to be communicated with the outside of the housing. The second vibratory plate cooperates with the exciter to define a second inner chamber therebetween. The casing has a through sound hole through which the second inner chamber is communicated with the outside of the casing. The sound pipe is kept out of communication with the through sound hole.

Abstract: A method and system for reducing audible side effects of dynamic current consumption is provided. The system includes an audio subsystem, and a plurality of digital subsystems. The audio subsystem and the digital subsystem are powered by a common power supply. T he digital subsystem processes data packets including audio data packets. The processing events implemented in one or more than one digital subsystem are reorganized to change the profile for executing the events inside the subsystem(s). The dynamic current spectral properties in one or more digital subsystems are changed.

Abstract: In a method for adjusting the transmission characteristic of a hearing aid, the characteristic being defined by hearing aid-specific parameters, a data processing device is used that has a screen and a pointer device. On a graphics user interface of the data processing device, an object displayed in a first area of the screen is selected and copied with the pointer device and the copy is moved into the second area of the screen and stored there, with the transmission characteristic of the hearing aid being able to be changed by the stored object. Settings selected for a hearing aid or a hearing program thus can be transferred quickly and easily to a second hearing aid or a second hearing program.

Abstract: A push-pull type electrostatic ultrasonic transducer includes a vibrating film having a conductive layer and a pair of fixed electrodes provided at respective surfaces of the vibrating film. The front-side fixed electrode and the rear-side fixed electrode sandwich the vibrating film. A plurality of through holes are provided in the front-side fixed electrodes and through holes having the same shape are provided in the rear-side fixed electrode in positions opposed to the respective through holes provided in the front-side fixed electrode. A sound absorbing material is provided facing the rear-side fixed electrode.

Abstract: In order to switch between different hearing programs to adjust to a momentary acoustic scene, a method for adjusting a hearing device, in which one of several possible hearing programs can be selected in order to adjust to a momentary acoustic scene, the method comprising the steps of detecting a desired hearing program change, changing parameters (b1, . . . , bm) of a transfer function provided between a microphone (M1) and a receiver of the hearing device in order to adapt it to the detected hearing program change, adjusting the parameters (b1, . . . , bm) to be changed from a momentary value to a desired value in such a manner that a smooth transition is perceived by the hearing device user while changing from a momentary hearing program to the desired hearing program, whereas each of the smooth transition is individually adjustable.

Abstract: There is provided a wireless headphone having charging contacts in the headphone band and at least one magnet in the headphone band. There is also provided a charging station for a corresponding wireless headphone with bars as an electrical feed line for charge contacting of a wireless headphone.

Abstract: From one aspect, the invention is a method of making a bending wave panel loudspeaker, comprising rigidly coupling a lever to a panel edge or marginal portion such that the lever extends at an angle to the plane of the panel, coupling a bending wave exciter to the lever whereby bending wave energy is coupled to the panel to produce an acoustic output when the exciter is fed with a signal and supporting the panel on a suspension positioned outboard of the lever. From another aspect the invention is a bending wave panel-form loudspeaker having a lever rigidly coupled to a marginal portion or edge of the panel, a vibration exciter coupled to the lever to apply bending wave energy to the panel to produce an acoustic output and a panel suspension positioned outboard of the lever. From a further aspect, the invention is a small electronic device, e.g.

Abstract: A battery-powered hearing aid (1) is programmed via a programming device (2), the hearing aid (1) having a battery (11) and a line connection (3, 4) for connecting the battery (11) to the programming device (2). The programming device uses a variable voltage source (5) and an input comparator (6) with a first and a second input terminal and an output terminal to output a variable voltage to one input of the input comparator (6) and determining the voltage of the hearing aid battery (11) by using the second input of the input comparator (6) of the programming device (2). By ramping the output of the variable voltage source (5) used as a reference, the voltage of the battery (11) can be determined with great accuracy using existing hearing aid programming circuitry.

Abstract: The invention relates to a digital microphone comprising an integral analog-to-digital converter based on a multi-level quantizer in cascade with a digital signal converter which is adapted to provide a single-bit output signal. Digital microphones in accordance with the invention are particularly well adapted for use in mobile terminals and compact portable communication equipment such as mobile or cellular phones, headsets, hearing prostheses etc.

Abstract: A communication device including a casing to be worn at the ear of a user, the casing including a microphone, a signal processing device, a receiver for delivering an audio signal to the user's ear canal, and a receiver enclosure, the receiver enclosure including wall parts forming part of the casing which in cooperation with detachable wall parts form the enclosure in an air tight manner for sound isolation of the receiver.

Abstract: A vibration actuator excites a mass member by interaction between an electric field of a vibration coil provided in an inner space of a case and a magnetic field of a magnetic field unit disposed corresponding to the vibration coil. The vibration actuator has an elastic wire having a wire body fixed to the outer surface of the mass member and elastic ends fixed to the inner surface of the case. The elastic wire is connected between the case and the mass member for elastically supporting mass member.

Abstract: Presented is device that attaches a microphone to a circuit substrate and includes a main holder unit holding a microphone and a main socket unit holding the main holder unit. Mounted in the main holder unit are inner contact pieces coming into contact with output terminals of the microphone when it is being held outer contact pieces coming into contact with inner contact pieces of first or second intermediate terminal members, and first and second terminal members formed from base sections connected at their bottom ends in a V-shape. On the main socket unit is disposed inner contact pieces, bends, bent from the upper ends thereof, and first and second intermediate terminal members formed as an inverted V-shape member from outer contact pieces formed at the lower ends thereof.

Abstract: Hearing aid wearers can find themselves in situations in which the necessary replacement and/or recharging of a discharged voltage source is not immediately possible. In such a situation, reducing the low-frequency signal elements in the acoustic output signal allows a type of emergency mode to be maintained for a certain period. The majority of important acoustic information thus remains comprehensible to the hearing aid wearer.

Abstract: The present invention is a multifunctional actuator including a magnetic circuit, a suspension that supports the magnetic circuit, a diaphragm positioned facing the magnetic circuit, and a voice coil that is mounted on the diaphragm and inserted in a circular air gap of the magnetic circuit, comprising a housing to accommodate the magnetic circuit, and a cover to cover an open end of the housing, wherein a sound release gap is formed between an outer periphery of the housing and a side wall of the cover for communication between the inside and outside of said housing. Thereby, it can prevent the infiltration of foreign matter into the housing without attaching a dust mesh or non-woven fabric over the sound release hole.

Abstract: The speaker has a frame, a magnetic circuit, a voice coil body and a diaphragm. The magnetic circuit is disposed inside of the frame to form a magnetic gap. The voice coil body is disposed movably in the magnetic gap. The diaphragm is coupled to the voice coil body by an inner periphery edge thereof and to the frame by an outer periphery edge thereof. The outer peripheral surface of a convex portion provided on a bottom of the frame is at least either being brought into contact with or in proximity to the magnetic circuit. The configuration can provide the speaker with excellent heat dissipation characteristics.

Abstract: A peripheral for an electronic device having a speaker is provided. The peripheral includes an input device for placement proximal to the speaker for receiving audio information from the speaker. The peripheral includes an output device connected to the input device that is positioned distal from the input device and away from electromagnetic signals generated by the device. The output device presents the audio information to a hearing aid proximal to the output device. The output device is positioned at a distance such that the electromagnetic signals experienced by the input device is less than the signals experienced by the hearing aid. As a result, deleterious effects of signals otherwise experienced by the hearing aid are reduced.

Abstract: The invention concerns a communication device with a casing enclosing a microphone and signal processor, whereby the casing comprises at least a first and a second part and a packing material provided between the first and the second part, and whereby further the microphone orifice is provided between the first and the second part and interrupting the packing material.