A method for manufacturing an acoustic panel by welding of at least two acoustic components made of thermoplastic material, a thermal gradient being applied on the acoustic components during the welding operation so as to apply a temperature higher than the glass transition or melting temperature of the material on the area to be welded and so as to apply a temperature lower than or equal to the geometric stabilization temperature of the material on the parts furthest from the area to be welded.

A loudspeaker diaphragm includes resin and hollow glass member particles contained in the resin. Further, a loudspeaker includes the above-described loudspeaker diaphragm, a magnetic circuit, a frame connected to the magnetic circuit, and a voice coil body having one end connected to the loudspeaker diaphragm and the other end disposed inside a magnetic gap in the magnetic circuit.

The present invention discloses a speaker vibration assembly, comprising: a voice coil, a reinforcement part and a diaphragm, wherein the diaphragm is provided with a central part. The voice coil and the reinforcement part are respectively pasted on two surfaces of the central part, and the central part is provided with an through hole for adhering configured to accommodate an adhesive applied to the surfaces of the diaphragm. In addition, the present invention further provides an assembling method of a speaker vibration assembly. The vibration assembly provided by the present invention avoids an overflow problem of the adhesive, and more reliable structural stability is provided to the reinforcement part and the voice coil. The assembling method provided by the present invention is simple in process, and the application of the adhesive and the solidification operation are required to be performed only once.

A method for manufacturing an acoustic panel by welding of at least two acoustic components made of thermoplastic material, a thermal gradient being applied on the acoustic components during the welding operation so as to apply a temperature higher than the glass transition or melting temperature of the material on the area to be welded and so as to apply a temperature lower than or equal to the geometric stabilization temperature of the material on the parts furthest from the area to be welded.

The disclosure relates to an audio device that includes a diaphragm having a graphene material, such as a graphene flake, that is incorporated into a base material. The audio device may form part of a speaker device, a microphone device, or a headphone device. The concentration of the graphene and/or a size of the graphene flakes may be varied throughout the diaphragm to define a stiff center portion and a flexible portion that surrounds the center portion.

The present disclosure discloses a method for forming a silica gel diaphragm and a silica gel diaphragm prepared using the method. The method for forming a silica gel diaphragm includes at least the following steps: step S1: providing a hot pressing mould, and placing at least a dome as an embedment into the hot pressing mould; step S2: injecting liquid silica gel into the hot pressing mould; and step S3: molding the liquid silica gel via hot pressing so as to obtain a silica gel membrane which is at least connected with the dome. The method for forming a silica gel diaphragm provided by the present disclosure is easy to conduct and the formed silica gel diaphragm has good performance.

A method for manufacturing an acoustic panel including a first skin, a second skin and an intermediate structure enclosed between these skins and forming oblique cavities with respect to the latter. The method includes an intermediate polymerization step for fastening the intermediate structure to the first skin in order to increase the compressive strength thereof and in particular to support an automated operation of draping the second skin.

The application relates to a composition and manufacturing and a use of a composite structure having vibrational properties and to a product thereof. According to an embodiment a composition comprises a matrix material and organic natural fiber material, wherein speed of sound is arranged to be different in different directions in the composition.

A miniature diaphragm assembly including a deep-drawn polymer foil forming a moveable membrane having an integrated suspension member and an integrated attachment region for attaching the diaphragm assembly to an outer surface of an associated receiver arrangement, said attachment region extending in a direction being essentially parallel to a direction of movement of the movable membrane.

The disclosure relates to an audio device that includes a diaphragm having a graphene material, such as a graphene flake, that is incorporated into a base material. The audio device may form part of a speaker device, a microphone device, or a headphone device. The concentration of the graphene and/or a size of the graphene flakes may be varied throughout the diaphragm to define a stiff center portion and a flexible portion that surrounds the center portion.