Abstract: According to embodiments described herein, there are provided methods and apparatus for providing a driving signal to a transducer, wherein the driving signal is output by an amplifier. A method comprises receiving an indication of a voltage and a current of the driving signal; based on an electrical model of the transducer and the voltage and the current of the driving signal, estimating an estimated electrical response of the transducer representative of movement of a mass in the transducer; comparing the estimated electrical response to a desired electrical response; and controlling the driving signal based on the comparison.

Abstract: A method for minimizing settling of a moving mass of an electromagnetic load may include determining a polarity and a magnitude of a velocity of the moving mass based on real time measurements of one or more parameters associated with the electromagnetic load and based on the polarity and the magnitude of the velocity, generating a braking signal to be applied to the moving mass that opposes the polarity of the velocity.

Abstract: A method for minimizing settling of a moving mass of an electromagnetic load may include determining a polarity and a magnitude of a velocity of the moving mass based on real time measurements of one or more parameters associated with the electromagnetic load and based on the polarity and the magnitude of the velocity, generating a braking signal to be applied to the moving mass that opposes the polarity of the velocity.

Abstract: According to embodiments described herein, there is provided methods and apparatus for providing a driving signal to a transducer, wherein the driving signal is output by an amplifier. A method comprises receiving an indication of a voltage and a current of the driving signal; based on an electrical model of the transducer and the voltage and the current of the driving signal, estimating an estimated electrical response of the transducer representative of movement of a mass in the transducer; comparing the estimated electrical response to a desired electrical response; and controlling the driving signal based on the comparison.

Abstract: A storage and charging capsule for a pair of wireless earbuds is presented. The storage and charging capsule has a base part, an elongate intermediate part, the intermediate part having a longitudinal major axis, and a cover part being retractable over the intermediate part. The intermediate part has a first end attached to the base part, a second end, and an earbud chamber formed between the first and second ends. The earbud chamber is adapted to receive the pair of wireless earbuds arranged one after another along the longitudinal major axis of the intermediate part. The capsule further has a power source for charging the pair of wireless earbuds when placed in the earbud chamber in the intermediate part.

Abstract: A storage and charging capsule for a pair of wireless earbuds is presented. The storage and charging capsule has a base part, an elongate intermediate part, the intermediate part having a longitudinal major axis, and a cover part being retractable over the intermediate part. The intermediate part has a first end attached to the base part, a second end, and an earbud chamber formed between the first and second ends. The earbud chamber is adapted to receive the pair of wireless earbuds arranged one after another along the longitudinal major axis of the intermediate part. The capsule further has a power source for charging the pair of wireless earbuds when placed in the earbud chamber in the intermediate part.

Abstract: A storage and charging capsule for a pair of wireless earbuds is presented. The storage and charging capsule has a base part, an elongate intermediate part, the intermediate part having a longitudinal major axis, and a cover part being retractable over the intermediate part. The intermediate part has a first end attached to the base part, a second end, and an earbud chamber formed between the first and second ends. The earbud chamber is adapted to receive the pair of wireless earbuds arranged one after another along the longitudinal major axis of the intermediate part. The capsule further has a power source for charging the pair of wireless earbuds when placed in the earbud chamber in the intermediate part.

Abstract: The invention relates to a cover plate (2) for a screw-type centrifugal wheel pump (1), wherein the cover plate (2) has a front side (2h) and a rear side (2i), and wherein the front side (2h) comprises a surface part (2k) which runs in a preferably frustoconical manner and the profile of which is designed to be matched to the rear side of a screw-type centrifugal wheel (25), wherein the surface part (2k) has, in the center thereof, a central opening (2g), wherein the central opening (2g) runs in the direction of an axis (A), and wherein the cover plate (2) has at least one aperture (2a) which is arranged in the region of the surface part (2k) and spaced apart from the central opening (2g), and wherein the aperture (2a) forms a fluid-conducting connection between the front side (2h) and the rear side (2i) of the cover plate (2).

Abstract: The screw-type centrifugal wheel pump includes a pump housing and a screw-type centrifugal wheel arranged rotatably within the pump housing and having a hub and a blade, and comprises a rotatable drive shaft connected to the screw-type centrifugal wheel, and includes a cover plate arranged between the screw-type centrifugal wheel and a housing rear wall, wherein the cover plate has a central opening through which the hub or the drive shaft runs, and wherein an interior space is formed between the cover plate and the housing rear wall, wherein a gap is formed between the central opening of the cover plate and the hub or the drive shaft, which gap is connected in fluid-conducting fashion to the interior space, wherein the cover plate has at least one aperture, which is arranged spaced apart from the central opening, in order to generate a fluid flow which flows into the interior space via the aperture and out of the interior space again via the gap.

Abstract: A storage and charging capsule for a pair of wireless earbuds is presented. The storage and charging capsule has a base part, an elongate intermediate part, the intermediate part having a longitudinal major axis, and a cover part being retractable over the intermediate part. The intermediate part has a first end attached to the base part, a second end, and an earbud chamber formed between the first and second ends. The earbud chamber is adapted to receive the pair of wireless earbuds arranged one after another along the longitudinal major axis of the intermediate part. The capsule further has a power source for charging the pair of wireless earbuds when placed in the earbud chamber in the intermediate part.

Abstract: A storage and charging capsule for a pair of wireless earbuds is presented. The storage and charging capsule has a base part, an elongate intermediate part, the intermediate part having a longitudinal major axis, and a cover part being retractable over the intermediate part. The intermediate part has a first end attached to the base part, a second end, and an earbud chamber formed between the first and second ends. The earbud chamber is adapted to receive the pair of wireless earbuds arranged one after another along the longitudinal major axis of the intermediate part. The capsule further has a power source for charging the pair of wireless earbuds when placed in the earbud chamber in the intermediate part.

Abstract: A wireless earbud has an earbud housing having a longitudinal main axis and an essentially circular cross section, a loudspeaker element, a rechargeable battery, at least one main printed circuit board having disposed thereon circuitry for wireless radio communication, audio codec and earbud operation control, and a charging interface member. The loudspeaker element, the rechargeable battery, the main printed circuit board and the charging interface member are arranged in a successive order along the longitudinal main axis of the earbud housing.

Abstract: A wireless earbud has an earbud housing having a longitudinal main axis and an essentially circular cross section, a loudspeaker element, a rechargeable battery, at least one main printed circuit board having disposed thereon circuitry for wireless radio communication, audio codec and earbud operation control, and a charging interface member. The loudspeaker element, the rechargeable battery, the main printed circuit board and the charging interface member are arranged in a successive order along the longitudinal main axis of the earbud housing.

Abstract: A storage and charging capsule for a pair of wireless earbuds is presented. The storage and charging capsule has a base part, an elongate intermediate part, the intermediate part having a longitudinal major axis, and a cover part being retractable over the intermediate part. The intermediate part has a first end attached to the base part, a second end, and an earbud chamber formed between the first and second ends. The earbud chamber is adapted to receive the pair of wireless earbuds arranged one after another along the longitudinal major axis of the intermediate part. The capsule further has a power source for charging the pair of wireless earbuds when placed in the earbud chamber in the intermediate part.

Abstract: The invention relates to a cover plate (2) for a screw-type centrifugal wheel pump (1), wherein the cover plate (2) has a front side (2h) and a rear side (2i), and wherein the front side (2h) comprises a surface part (2k) which runs in a preferably frustoconical manner and the profile of which is designed to be matched to the rear side of a screw-type centrifugal wheel (25), wherein the surface part (2k) has, in the centre thereof, a central opening (2g), wherein the central opening (2g) runs in the direction of an axis (A), and wherein the cover plate (2) has at least one aperture (2a) which is arranged in the region of the surface part (2k) and spaced apart from the central opening (2g), and wherein the aperture (2a) forms a fluid-conducting connection between the front side (2h) and the rear side (2i) of the cover plate (2).

Abstract: The screw-type centrifugal wheel pump (1) comprises a pump housing (3) and a screw-type centrifugal wheel (20) arranged rotatably within the pump housing (3) and having a hub (21) and a blade (25), and comprises a rotatable drive shaft (33) connected to the screw-type centrifugal wheel (20), and comprises a cover plate (2) arranged between the screw-type centrifugal wheel (20) and a housing rear wall (23), wherein the cover plate (2) has a central opening (2g) through which the hub (21) or the drive shaft (33) runs, and wherein an interior space (37) is formed between the cover plate (2) and the housing rear wall (23), wherein a gap (2b) is formed between the central opening (2g) of the cover plate (2) and the hub (21) or the drive shaft (33), which gap is connected in fluid-conducting fashion to the interior space (37), wherein the cover plate (2) has at least one aperture (2a), which is arranged spaced apart from the central opening (2g), in order to generate a fluid flow (F1) which flows into the interior

Abstract: A vibration generator for a portable electronic device includes a speaker driver and a counterweight retained by a housing to form a closed assembly. When a communications transmission is received by the electronic device, an input force signal is transmitted to the speaker driver to apply a force at a frequency substantially below its resonance frequency. Air sealed within the vibration generator between the speaker driver and the counterweight transmits the force signal inputted to the speaker driver to the counterweight with minimal dissipation, thereby causing the counterweight to vibrate at substantially the same frequency as that of the input force signal. The vibrations of the counterweight alert a user that a communications transmission is being received.

Abstract: An electro-acoustic communications unit (20) may include an acoustic driver (22) which, when operated, emits acoustic waves in two directions. A hermetically sealed container (24) attached to the acoustic driver may include a gas other than air. The gas may transport acoustic waves generated by the acoustic driver.

Abstract: An electro-acoustic communications unit (20) may include an acoustic driver (22) which, when operated, emits acoustic waves in two directions. A hermetically sealed container (24) attached to the acoustic driver may include a gas other than air. The gas may transport acoustic waves generated by the acoustic driver.

Abstract: The pump rotor (1) comprises a first blade (3), wherein the first blade (3) comprises a first helical-gear blade part (3a) and, adjoining the latter, a first centrifugal-wheel blade part (3b), and said pump rotor (1) comprises a hub (2) with a rotational axis (D), wherein the centrifugal-wheel blade part (3b) is fixedly connected to the hub (2), wherein at least one second blade (4) is provided which comprises a second helical-gear blade part (4a) and, adjoining the latter, a second centrifugal-wheel blade part (4b), wherein the first and the second blades (3,4) have in each case one outer edge (3c,4c), wherein a connecting means (5) connects the first and second blades (3,4) to one another in the region of the outer edge (3c,4c), and wherein the second centrifugal-wheel blade part (4b) is arranged so as to run relative to the hub (2) in such a way that an opening (6) which runs continuously in the rotational direction (D1) is formed between said second centrifugal-wheel blade part (4b) and hub (2), since the