This invention relates to acoustic drivers with stationary and moving coils. Time varying signals are applied to the moving and stationary coils to control the movement of a diaphragm, which produces audible sound. The time varying signals correspond to an input audio signal such that the sound corresponds to the input audio signal. Some of the described embodiments include multiple moving coils, multiple stationary coils or both. Some embodiments include feedback for adjusting one or more of the signals based on a characteristic of the acoustic driver. Various compensation and other features of the invention are also described in relation to various embodiments.

This invention relates to acoustic drivers with stationary and moving coils. Time varying signals are applied to the moving and stationary coils to control the movement of a diaphragm, which produces audible sound. The time varying signals correspond to an input audio signal such that the sound corresponds to the input audio signal. Some of the described embodiments include multiple moving coils, multiple stationary coils or both. Some embodiments include feedback for adjusting one or more of the signals based on a characteristic of the acoustic driver. Various compensation and other features of the invention are also described in relation to various embodiments.

An earphone includes: a housing; a dynamic driver unit provided in the housing; and a sound conduit having a length of approximately 10 mm or more, the sound conduit being configured to transmit sound output from the dynamic driver unit.

An earphone includes: a housing; a dynamic driver unit provided in the housing; and a sound conduit having a length of approximately 10 mm or more, the sound conduit being configured to transmit sound output from the dynamic driver unit.

The present invention relates to a compact and robust hybrid receiver comprising a moving coil type receiver and one or more moving armature type receivers, wherein the moving coil type receiver and the moving armature type receiver, at least partly, share a common magnetic circuit.

The present invention relates to a compact and robust hybrid receiver comprising a moving coil type receiver and one or more moving armature type receivers, wherein the moving coil type receiver and the moving armature type receiver, at least partly, share a common magnetic circuit.

Disclosed is a vibration suspension system and a drive system assembly of a transducer, the vibration suspension system comprises at least one movable device and at least one suspension device, wherein the driving system assembly comprises at least one coil, at least a part of the vibration suspension system is disposed inside the coil, and at least a part of the vibration suspension system passes through an inner hole of the coil, the coil is fixedly disposed inside the transducer, and a movement direction of the movable device is orthogonal or partially orthogonal to an axis direction of the coil. Such a design enables one or more parts of the vibration suspension system to share space with one or more parts of the drive system assembly, which is more benefit to reduce an internal space of the device and to achieve the purpose of further miniaturization.

Disclosed is a magnetic potential transducer, comprising a fixed component and a movable component. The fixed component comprises: at least one static magnetic field generating device, the static magnetic field generating device forms a static magnetic field on the magnetic potential transducer; and at least one alternating magnetic field generating device, the alternating magnetic field generating device generates an alternating magnetic field on the magnetic potential transducer, and the alternating magnetic field is orthogonal or partially orthogonal to the static magnetic field. The movable component comprises at least one movable device and at least one suspension device, the movable device is provided with a magnetic conductive material, the magnetic conductive material moves in the magnetic potential transducer; at least a part of the magnetic conductive material is provided in an area where the alternating magnetic field and the static magnetic field overlap; a magnetic field force generated by the interaction.

A vibration generating device includes a housing; a diaphragm supported by the housing, and configured to generate sound by vibrating in a first direction; and a vibration providing part attached to the housing, and configured to vibrate the housing. The vibration providing part vibrates the housing in the first direction at a first frequency, and vibrates the housing in a second direction at a second frequency lower than the first frequency.

A new loudspeaker structure comprises a housing, a coil assembly and a magnetic vibration diaphragm, wherein the coil assembly is fixed on the housing, and the coil assembly is provided with a connection end connected to an external power source; and the magnetic vibration diaphragm is connected to the housing, and a vibration space for vibration of the magnetic vibration diaphragm is formed between the magnetic vibration diaphragm and the coil assembly. According to the loudspeaker structure of the present invention, a vibration diaphragm is provided as a magnetic vibration diaphragm, thereby removing a bulky magnet, reducing the volume of the loudspeaker structure, and realizing the miniaturization of the loudspeaker structure, so that the application of the loudspeaker structure is more flexible.