Abstract: A wireless earbud (100) for in-ear use has an earbud housing (110), a loudspeaker (130), a rechargeable battery (140), a first microphone (132) and a second microphone (134). The first microphone (132) is adapted to pick up sound internally from an ear canal of a user wearing the wireless earbud. The second microphone (134) is adapted to pick up sound externally from outside of the ear canal of the user wearing the wireless earbud. Disclosed is also a storage and charging capsule (200) for at least one wireless earbud (100a, 100b). The capsule has an elongate insert part (240) having an earbud chamber (246) adapted to receive the or each wireless earbud (100a, 100b). A cover part (260) slidably receives the elongate insert part (240) and is placeable in an open position in which the cover part is retracted from the elongate insert part to allow insertion/removal of the or each wireless earbud (100a, 100b) into/from the earbud chamber (246) of the elongate insert part (240).

Abstract: A wireless earbud (100) for in-ear use has an earbud housing (110), a loudspeaker (130), a rechargeable battery (140), a first microphone (132) and a second microphone (134). The first microphone (132) is adapted to pick up sound internally from an ear canal of a user wearing the wireless earbud. The second microphone (134) is adapted to pick up sound externally from outside of the ear canal of the user wearing the wireless earbud. Disclosed is also a storage and charging capsule (200) for at least one wireless earbud (100a, 100b). The capsule has an elongate insert part (240) having an earbud chamber (246) adapted to receive the or each wireless earbud (100a, 100b). A cover part (260) slidably receives the elongate insert part (240) and is placeable in an open position in which the cover part is retracted from the elongate insert part to allow insertion/removal of the or each wireless earbud (100a, 100b) into/from the earbud chamber (246) of the elongate insert part (240).

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: 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 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 biasing arrangement for an electronic apparatus having an input device connected by wires is disclosed. The biasing arrangement comprises a bias signal generator arranged to provide a bias voltage and a reference voltage; a flying capacitor circuitry having a first set of switches connected to said bias signal generator to selectively connecting and disconnecting the bias voltage and reference voltage, respectively, over a capacitor of the flying capacitor circuitry, and the flying capacitor circuitry further having a second set of switches to selectively connecting and disconnecting the voltage over the capacitor to an output of the flying capacitor circuitry, wherein the first and second sets of switches are not both in a connecting state at any time; and a wired connection between output of the flying capacitor circuitry and the input device of the apparatus. An electronic apparatus, a biasing method, and a computer program are also disclosed.

Abstract: A biasing arrangement for an electronic apparatus having an input device connected by wires is disclosed. The biasing arrangement comprises a bias signal generator arranged to provide a bias voltage and a reference voltage; a flying capacitor circuitry having a first set of switches connected to said bias signal generator to selectively connecting and disconnecting the bias voltage and reference voltage, respectively, over a capacitor of the flying capacitor circuitry, and the flying capacitor circuitry further having a second set of switches to selectively connecting and disconnecting the voltage over the capacitor to an output of the flying capacitor circuitry, wherein the first and second sets of switches are not both in a connecting state at any time; and a wired connection between output of the flying capacitor circuitry and the input device of the apparatus. An electronic apparatus, a biasing method, and a computer program are also disclosed.

Abstract: A circuit for generating a negative voltage supply signal is disclosed. The circuit has a first capacitive element coupled to receive a switched input signal which switches at least between a first state with a positive first voltage and a second state with a second voltage, different from the first voltage. A second capacitive element is coupled to provide the negative voltage supply signal. Control circuitry is coupled to the first capacitive element and the second capacitive element. The control circuitry is arranged, in the first state of the switched input signal, to enable charging of the first capacitive element by the switched input signal, and, in the second state of the switched input signal, to enable charging of the second capacitive element by the first capacitive element to generate the negative voltage supply signal.