Abstract: An ear tip for an earphone includes an interior mating surface for attaching the ear tip to the earphone, the interior mating surface at least partially surrounding a cavity where the earphone will be located when the ear tip may be so attached, an outer surface including features corresponding to human ear anatomy, a nozzle extension providing a passageway from the interior cavity to space outside the ear tip, a wax guard in the nozzle extension, the wax guard blocking the passageway, and a plurality of holes through the wax guard, the holes sized and arranged to allow sound to pass along the passageway, while inhibiting ear wax from passing along the passageway.

Abstract: A headphone includes an electro-acoustic transducer for creating audio output, the electro-acoustic transducer comprising a transducer magnet that produces a transducer magnetic field having a magnetic field strength, structure that is constructed and arranged to be positioned so as to direct the audio output at the ear canal of the ear of a wearer of the headphone, a magnetic field sensor constructed and arranged to sense the Earth's magnetic field, and a nulling magnet constructed and arranged to produce a nulling magnetic field that reduces the strength of the transducer magnetic field at the magnetic field sensor.

Abstract: A headphone includes an electro-acoustic transducer for creating audio output, the electro-acoustic transducer comprising a transducer magnet that produces a transducer magnetic field having a magnetic field strength, structure that is constructed and arranged to be positioned so as to direct the audio output at the ear canal of the ear of a wearer of the headphone, a magnetic field sensor constructed and arranged to sense the Earth's magnetic field, and a nulling magnet constructed and arranged to produce a nulling magnetic field that reduces the strength of the transducer magnetic field at the magnetic field sensor.

Abstract: A headphone includes an electro-acoustic transducer for creating audio output, the electro-acoustic transducer comprising a transducer magnet that produces a transducer magnetic field having a magnetic field strength, a housing constructed and arranged to be positioned at an ear of a wearer so as to direct the audio output at the ear canal of the ear, a magnetic field sensor positioned in the housing and constructed and arranged to sense the Earth's magnetic field, and a nulling magnet positioned in the housing and constructed and arranged to produce a nulling magnetic field that reduces the strength of the transducer magnetic field at the magnetic field sensor.

Abstract: An ear tip for an earphone includes an interior mating surface for attaching the ear tip to the earphone, the interior mating surface at least partially surrounding a cavity where the earphone will be located when the ear tip may be so attached, an outer surface including features corresponding to human ear anatomy, a nozzle extension providing a passageway from the interior cavity to space outside the ear tip, a wax guard in the nozzle extension, the wax guard blocking the passageway, and a plurality of holes through the wax guard, the holes sized and arranged to allow sound to pass along the passageway, while inhibiting ear wax from passing along the passageway.

Abstract: A headphone includes an electro-acoustic transducer for creating audio output, the electro-acoustic transducer comprising a transducer magnet that produces a transducer magnetic field having a magnetic field strength, a housing constructed and arranged to be positioned at an ear of a wearer so as to direct the audio output at the ear canal of the ear, a magnetic field sensor positioned in the housing and constructed and arranged to sense the Earth's magnetic field, and a nulling magnet positioned in the housing and constructed and arranged to produce a nulling magnetic field that reduces the strength of the transducer magnetic field at the magnetic field sensor.

Abstract: A cover for a wearable personal acoustic device includes a fabric cover shaped to receive and enclose a wearable personal acoustic device, and an identification tag, such as an RFID tag or optical tag, secured to the fabric cover. The fabric cover includes a stretchable material that is acoustically transparent. The fabric cover may include a closure mechanism that can provide an opening through which the wearable personal acoustic device is received or removed and a closed state in which the wearable personal acoustic device is enclosed by the fabric cover. The identification tag stores an identifier associated with the fabric cover and communicates with the wearable personal acoustic device through an identification reader. The identifier may be associated with a physical property of the fabric cover or an operational parameter of the wearable personal acoustic device. The operational parameter optionally is definable by a user.

Abstract: An earbud may include an acoustic driver. The acoustic driver may include a diaphragm and a magnetic circuit. A frame of the acoustic driver may be integrated with the earbud.

Abstract: A cover for a wearable personal acoustic device includes a fabric cover shaped to receive and enclose a wearable personal acoustic device, and an identification tag, such as an RFID tag or optical tag, secured to the fabric cover. The fabric cover includes a stretchable material that is acoustically transparent. The fabric cover may include a closure mechanism that can provide an opening through which the wearable personal acoustic device is received or removed and a closed state in which the wearable personal acoustic device is enclosed by the fabric cover. The identification tag stores an identifier associated with the fabric cover and communicates with the wearable personal acoustic device through an identification reader. The identifier may be associated with a physical property of the fabric cover or an operational parameter of the wearable personal acoustic device. The operational parameter optionally is definable by a user.

Abstract: A flexible waveguide band is provided for that may be worn by a user around their neck, for example. The flexible waveguide band includes a spine, such as a pliable rod; a plurality of vertebrae mounted on the spine, with each vertebra including at least one waveguide channel guide; and an encapsulating potting material. The flexible waveguide band may also be attached to an acoustic pod, including an acoustic driver that may radiate sound waves into said waveguide channels and exit via a sound outlet opening in the flexible band.

Abstract: A user interface includes a rotatable ring for controlling a function on an associated device, and a support ring for supporting the rotatable ring. The support ring includes a plurality of biasing elements, and a plurality of engagement members rotatably mounted on the biasing elements and configured to engage the rotatable ring so as to preload the biasing elements and thereby (i) biasing the rotatable ring toward a center position in which a central axis of the rotatable ring is coincident with a central axis of the support ring, and (ii) increasing resistance to rotational movement of the rotatable ring.

Abstract: A flexible waveguide band is provided for that may be worn by a user around their neck, for example. The flexible waveguide band includes a spine, such as a pliable rod; a plurality of vertebrae mounted on the spine, with each vertebra including at least one waveguide channel guide; and an encapsulating potting material. The flexible waveguide band may also be attached to an acoustic pod, including an acoustic driver that may radiate sound waves into said waveguide channels and exit via a sound outlet opening in the flexible band.

Abstract: In one aspect, a speaker kit includes a first portion of a speaker housing, and an electroacoustic driver that can be secured to the housing first portion. The kit has one or more additional portions of the speaker housing. One of the one or more additional housing portions has at least one electrical component secured thereto. The kit also has one or more mechanisms that can be used to hold the housing portions together such that the housing portions form an acoustic seal that encompasses an acoustic volume. The one or more mechanisms are removable from the housing portions such that the housing portions can be moved away from each other without damage to the housing portions or the one or more mechanisms.

Abstract: In one aspect, a speaker kit includes a first portion of a speaker housing, and an electroacoustic driver that can be secured to the housing first portion. The kit has one or more additional portions of the speaker housing. One of the one or more additional housing portions has at least one electrical component secured thereto. The kit also has one or more mechanisms that can be used to hold the housing portions together such that the housing portions form an acoustic seal that encompasses an acoustic volume. The one or more mechanisms are removable from the housing portions such that the housing portions can be moved away from each other without damage to the housing portions or the one or more mechanisms.

Abstract: A user interface includes a rotatable ring for controlling a function on an associated device, and a support ring for supporting the rotatable ring. The support ring includes a plurality of biasing elements, and a plurality of engagement members rotatably mounted on the biasing elements and configured to engage the rotatable ring so as to preload the biasing elements and thereby (i) biasing the rotatable ring toward a center position in which a central axis of the rotatable ring is coincident with a central axis of the support ring, and (ii) increasing resistance to rotational movement of the rotatable ring.