A soundproof member is provided. The soundproof member includes a structural element, and a first composite film which is disposed on the bottom surface of the structural element. The structural member includes at least one through hole and the through hole passes through the structural element. The first composite film includes a polymer material and an inorganic nanoscale material, wherein the inorganic nanoscale material is a one-dimensional inorganic nanoscale material or a two-dimensional inorganic nanoscale material.

A soundproof structure includes one or more soundproof cells. Each of the one or more soundproof cells includes a frame having a hole portion, a vibratable film fixed to the frame so as to cover the hole portion, and one or more through holes drilled in the film. Both end portions of the hole portion of the frame are not closed, and the frame and the film are formed of the same material and are integrally formed. Therefore, it is possible to provide a soundproof structure and a soundproof structure manufacturing method capable of not only stably insulating sound due to increased resistance to environmental change or aging but also avoiding problems in manufacturing, such as uniform adhesion or bonding of a film to a frame.

A soundproof structure includes one or more soundproof cells. Each of the one or more soundproof cells includes a frame having a hole portion, a vibratable film fixed to the frame so as to cover the hole portion, and one or more through holes drilled in the film. Both end portions of the hole portion of the frame are not closed, and the frame and the film are formed of the same material and are integrally formed. Therefore, it is possible to provide a soundproof structure and a soundproof structure manufacturing method capable of not only stably insulating sound due to increased resistance to environmental change or aging but also avoiding problems in manufacturing, such as uniform adhesion or bonding of a film to a frame.

Panel systems and related methods of controlling sound transmission are discussed. For example, the panel system may include a sound control component, which may include a foam composite of a polymer and an inorganic filler. The panel system may further include an attachment mechanism, e.g., including at least one fastener, at least one bracket, and/or at least one rail or rail system. The attachment mechanism may be configured to secure the sound control component between a first wall and a second wall, such that the panel system controls sound transmission between the first and second walls.

Panel systems and related methods of controlling sound transmission are discussed. For example, the panel system may include a sound control component, which may include a foam composite of a polymer and an inorganic filler. The panel system may further include an attachment mechanism, e.g., including at least one fastener, at least one bracket, and/or at least one rail or rail system. The attachment mechanism may be configured to secure the sound control component between a first wall and a second wall, such that the panel system controls sound transmission between the first and second walls.

Provided is a sound-absorbing material, including an adsorbent material and a thermal conductive material. The thermal conductive material is uniformly dispersed in the sound-absorbing material. The thermal conductive material includes a carbon fiber material, and a weight ratio of the carbon fiber material in the sound-absorbing material is within a range of 0.05% to 10%. Further provided are a preparation method of the sound-absorbing material and a speaker using the sound-absorbing material. The sound-absorbing material has higher thermal conductivity and can be added to a rear cavity of the speaker to effectively conduct heat generated when the speaker is working, thereby improving the heat dissipation performance of the speaker.

An object of the present disclosure is to provide a composite material laminate excellent in impact resistance and vibration damping property. The present disclosure is a composite material laminate including a metal substrate, an adhesive layer formed on a surface of the metal substrate, and a foamed body layer formed on a surface of the adhesive layer, wherein a shear fracture strength (S) at an interface between the metal substrate and the adhesive layer is 1.0 MPa or more, and (S/F) determined by dividing the shear fracture strength (S) at the interface by a bending elastic modulus (F) of the foamed body layer is 0.007 or more and 0.5 or less.

A scanning apparatus for imaging an object, comprising an ultrasound transducer comprising a transmitter configured to transmit ultrasound signals in a first direction towards an object and a receiver configured to receive reflected ultrasound signals from an object; and a backing block for absorbing ultrasound signals, located adjacent the transducer along a second direction opposite to the first direction; the backing block comprising an inner surface facing the transducer, the inner surface comprising a non-planar feature configured to increase the absorption of ultrasound signals by the backing block.

The disclosed embodiments relate to a portable ultrasound device. Specifically, the disclosed embodiments relate to an acoustic lens positioned at an ultrasound probe. The acoustic lens may be configured for impedance matching and signal attenuation. In one embodiment, ultrasound signal attenuation is provided by forming an acoustic lens as a solid admixture of signal attenuating particles in a polymer matrix.

The disclosed embodiments relate to a portable ultrasound device. Specifically, the disclosed embodiments relate to an acoustic lens positioned at an ultrasound probe. The acoustic lens may be configured for impedance matching and signal attenuation. In one embodiment, ultrasound signal attenuation is provided by forming an acoustic lens as a solid admixture of signal attenuating particles in a polymer matrix.