Embodiments of the present disclosure set forth a noise-reducing loudspeaker and systems implementing such. In one aspect, a loudspeaker apparatus comprises a diaphragm. The diaphragm comprises an acoustic layer configured to emit output sounds toward a first side of the loudspeaker apparatus; and a first sound attenuation layer configured to attenuate sounds passing from a second side of the loudspeaker apparatus to the first side through the diaphragm, where the first sound attenuation layer is positioned nearer to the second side relative to the acoustic layer.

An acoustic transducer is disposed within a wearable sound device or to be disposed within the wearable sound device. The acoustic transducer includes a first anchor structure and a first flap. The first flap includes a first end and a second end. The first end is anchored by the first anchor structure, and the second end is configured to perform a first up-and-down movement to form a vent temporarily. The first flap partitions a space into a first volume to be connected to an ear canal and a second volume to be connected to an ambient of the wearable sound device. The ear canal and the ambient are connected via the vent temporarily opened.

An acoustic transducer is configured to perform an acoustic transformation. The acoustic transducer is disposed within a wearable sound device or to be disposed within the wearable sound device. The acoustic transducer includes at least one anchor structure, a film structure and an actuator. The film structure is disposed within a first layer and anchored by the anchor structure disposed within a second layer. The actuator is disposed on the film structure, and the actuator is configured to actuate the film structure to form a vent temporarily. The film structure partitions a space into a first volume to be connected to an ear canal of a wearable sound device user and a second volume to be connected to an ambient of the wearable sound device. The ear canal and the ambient are to be connected via the vent temporarily opened when the film structure is actuated.

A dual suspension edge member structure for a radiation device, a dual suspension edge loudspeaker and a loudspeaker box. The radiation device comprises an outer supporting frame, a vibration element, a first suspension edge member extending between the vibration element and the outer supporting frame, an inner frame connected to the vibration element, an outer holding frame, and a second suspension edge member connected between the inner frame and the outer holding frame. The dual suspension edge member structure of the radiation device for making the dual suspension edge loudspeaker or loudspeaker box prevents shaking and shifting of the vibration element to improve the sound effect quality.

Disclosed is a multi-cone loudspeaker, including a cone assembly. The a cone assembly includes a central cone and a plurality of outer cones successively arranged in a circumferential direction of the central cone. The central cone is driven by a central driving mechanism to vibrate and sound, each of the plurality of outer cones is driven by one of outer driving mechanism to vibrate and sound. The central driving mechanism includes a central voice coil connected to the central cone, and a central magnetic driving system for driving the central voice coil, and each of the plurality of outer driving mechanism includes an outer voice coil connected to one of the plurality of outer cones, an outer damper sleeved on the outer voice coil, and an outer magnetic driving system for driving the outer voice coil.

A piezoelectric transducer comprises a deflectable structure having a first portion and a laterally adjoining second portion. The first portion has a piezoelectric layer and the second portion has an insulating material layer, and the second portion has a higher rigidity and a smaller mass per unit area than the first portion.

A sub cone for use in a loudspeaker includes a slanted portion that has an aperture area that increases toward an emission direction in which sound is emitted from the loudspeaker and a rim portion that is annular in shape and extends linearly outward from an edge of a distal end of the slanted portion in a direction orthogonal to the emission direction.

Disclosed is a magnetic circuit structure of a transducer comprising a static magnetic field generating device which comprises magnet sets, the magnet sets comprise a first magnet set magnetized in a moving direction of the transducer, a second magnet set and a third magnet set located in a direction orthogonal to a static magnetic field generated by the first magnet set, a magnetization direction of the second magnet set is orthogonal to that of the first magnet set, a magnetization direction of the third magnet set is orthogonal to that of the second and first magnet sets, the second and third magnet sets increase a magnetic induction intensity of the static magnetic field. The magnetic circuit structure of the transducer in the present disclosure can effectively solve the problem that a driving force of the transducer applying thereof is not sufficient, thus increasing the efficiency of electric-to-mechanical conversion.

A diaphragm for a speaker includes; a diaphragm body configured to provide different stiffness along different directions extending from a center of the diaphragm body to a periphery of the diaphragm body, with a largest stiffness value provided along a first direction extending between the center and the periphery of the diaphragm body; and a protector including a first rib extending in one of the first direction or a second direction, where the stiffness is less than the largest stiffness value, intersecting the first direction.

An air-pulse generating device includes a membrane structure, a valve structure, and a cover structure. A chamber is formed between the membrane structure, the valve structure and the cover structure. An air wave vibrating at an operating frequency is formed within the chamber. The valve structure is configured to be actuated to perform an open-and-close movement to form at least one opening. The at least one opening connects air inside the chamber with air outside the chamber. The open-and-close movement is synchronous with the operating frequency.