Abstract: There is provided a soundproof structure having two or more soundproof units. Each soundproof unit has a frame having an opening portion and a sound absorbing member attached to the opening portion of the frame. Two adjacent soundproof units are disposed such that at least parts of the sound absorbing members face each other. The sound absorbing members at least parts of which face each other are spaced apart from each other. An average distance between the sound absorbing members at least parts of which face each other is less than 20 mm. Therefore, it is possible to provide a soundproof structure and a soundproof system that can soundproof low frequency side sound with a simple configuration, is small and lightweight, and can easily change its frequency characteristics.

Abstract: There are provided a soundproof structure, which can have high soundproofing performance in a wide frequency band and in which visual recognition of through-hole can be suppressed, and a sound absorbing panel and a sound adjusting panel using the soundproof structure. A sheet member having a plurality of through-holes passing therethrough in a thickness direction and a sound absorbing body disposed in contact with one main surface of the sheet member are provided. An average opening diameter of the through-holes is 0.1 ?m or more and less than 100 ?m. Assuming that the average opening diameter of the through-holes is ? (?m) and an average opening ratio is ? a parameter A expressed by A=?×?+2 is 92 or less.

Abstract: There is provided a soundproof structure that is small and has high soundproofing performance with respect to sound in a low frequency band. At least one soundproof cell including a frame having a hole portion and a film fixed to the frame is provided. The film has a surface density distribution. Assuming that a shortest line segment length between high surface density regions and between the high surface density regions and end portions of the hole portions is ?d, a longest line segment length between the end portions of the hole portions is L [m], a Young's modulus of a material of the low surface density region is E [Gpa], an average film thickness of the low surface density region is h [m], and a maximum surface density and a minimum surface density of the film are ?max and ?min, a parameter X in the following Equation (1) satisfies the following Inequality (2). X=Eh2/(?max/?min) [N]??(1) (?d/L?0.025)/(0.

Abstract: There is provided a soundproof structure that can not only have a peak of noise absorption at a specific frequency but also have a spread at the peak in order to suppress noise with a specific frequency. A soundproof cell includes a frame having a hole portion penetrating through both surfaces and at least one film fixed to at least one surface of the frame. The soundproof cell is disposed in an opening portion of a wall separating two spaces from each other in a state in which a surface of the film is inclined with respect to an opening cross section of the opening portion to provide a ventilation portion. All the surfaces of the at least one film are separated from the wall surface. A distance between the surface of the film on the side of the wall surface of the opening portion and the wall surface is 0.1 mm or more and is a distance set according to an absorption peak frequency at a spectral peak of soundproofing.

Abstract: Provided are a soundproof structure and an opening structure which is easy to be manufactured, has a light weight, and is capable of absorbing sound in a wide frequency bandwidth. The soundproof structure includes a tubular member and a film member arranged so as to block a hollow portion of the tubular member. Assuming that a wavelength corresponding to a resonance frequency in a single film vibration element of the film member is ?a, lengths from a position at which the film member is attached to two opened end surfaces of the tubular member are L1 and L2, an opened end correction length is ?, and n is an integer of 0 or more, at least one of (?a/4??a/8)+n×?a/2???L1?(?a/4+?a/8)+n×?a/2?? or (?a/4??a/8)+n×?a/2???L2?(?a/4+?a/8)+n×?a/2?? is satisfied.

Abstract: Provided is a soundproof structure with a small size and high soundproofing performance of a low frequency band. The soundproof structure includes at least one soundproof cell which includes a frame having a hole portion, an elastic layer laminated on a frame of one opening surface of the frame, and a film laminated on the elastic layer so as to cover the hole portion. An effective displacement amount at a position at which an amplitude is maximized in a region bonded to the elastic layer in a case where a film vibration of the film occurs is 0.4% to 10% of an effective displacement amount at a position at which an amplitude of the film is maximized.

Abstract: A soundproof member includes one or more soundproof cells each including a frame having a hole portion and a film fixed to the frame. The film vibrates in response to sound, and the film includes one or more cut portions penetrating from one surface to the other surface.

Abstract: There is provided a soundproof structure that can selectively block sound having a specific frequency emitted from equipment, automobiles, and general households and can change the cutoff frequency of the sound in accordance with a change in the frequency of sound to be blocked. The above problem is solved by providing a laminated film, in which two or more films each including one or more holes drilled therein are laminated, and two rigid frames, which fix the laminated film so as to be interposed from both sides of the laminated film, and making at least parts of the one or more holes in the respective films of the laminated film overlap each other.

Abstract: An object is to provide a soundproofing structure which exhibits high soundproofing performance in a broad frequency band, can be miniaturized, can ensure ventilation properties, and has a light transmittance, and a cylindrical structure, a window member, and a partition member including this soundproofing structure. Provided is a soundproofing structure including: a soundproofing cell which includes a frame having a frame hole portion passing therethrough and a film that covers the frame hole portion and is fixed to the frame, in which the film has a plurality of through-holes passing therethrough in a thickness direction, an average opening diameter of the through-holes is in a range of 0.1 ?m to 250 ?m, and a vertical direction of a film surface is disposed so as to be inclined with respect to a direction of a sound source to be soundproofed.

Abstract: There are provided a soundproof structure and an opening structure capable of suppressing degradation of sound absorbing characteristics due to resonance vibration. A micro perforated plate having a plurality of through-holes passing therethrough in the thickness direction and a first frame body, which is disposed in contact with one surface of the micro perforated plate and has a plurality of hole portions, are provided. The opening diameter of the hole portion of the first frame body is larger than the opening diameter of the through-hole of the micro perforated plate. The opening ratio of the hole portion of the first frame body is larger than the opening ratio of the through-hole of the micro perforated plate. The resonance frequency of the micro perforated plate in contact with the first frame body is higher than the audible range.

Abstract: A soundproof structure has two or more soundproof units. Each of the soundproof units has an outer shell having a cylindrical shape, has a hollow inner space inside the outer shell, and has a first opening portion opened to outside on a surface that is one end portion of the outer shell in an axis direction of the cylindrical shape. The two soundproof units adjacent to each other are disposed in the axis direction such that the first opening portions face each other. The first opening portions facing each other are spaced apart from each other in the axis direction. An average distance in the axis direction between the first opening portions facing each other is less than 20 mm. Accordingly, there are provided a soundproof structure and a soundproof system which can insulate sounds on the low frequency side with a simple configuration, are small and lightweight, and can easily change the frequency characteristics.

Abstract: There is provided a soundproof structure capable of obtaining a sufficient soundproofing effect by suppressing the leaking of sound due to a diffraction phenomenon in a partition member used for soundproofing. A soundproof unit, which has a frame body having an opening portion and a film that is disposed so as to cover the opening portion and vibrates according to a sound incident on the film, and a partition member, to which one or more soundproof units are attached, are provided.

Abstract: There is provided a soundproof structure having two or more soundproof units. Each soundproof unit has a frame having an opening portion and a sound absorbing member attached to the opening portion of the frame. Two adjacent soundproof units are disposed such that at least parts of the sound absorbing members face each other. The sound absorbing members at least parts of which face each other are spaced apart from each other. An average distance between the sound absorbing members at least parts of which face each other is less than 20 mm. Therefore, it is possible to provide a soundproof structure and a soundproof system that can soundproof low frequency side sound with a simple configuration, is small and lightweight, and can easily change its frequency characteristics.

Abstract: Provided is a soundproofing structure including: a plate-like member which has a plurality of through-holes passing therethrough in a thickness direction, in which in a case where an average opening diameter of the through-holes is 0.1 ?m or greater and less than 100 ?m, and in a case where the average opening diameter of the through-holes is set as phi (?m) and a thickness of the plate-like member is set as t (?m), an average opening ratio rho of the through-holes is greater than 0 and less than 1 and falls in a range where a center is rho_center=(2+0.25×t)×phi?1.6, a lower limit is rho_center?(0.052×(phi/30)?2), and an upper limit is rho_center+(0.795×(phi/30)?2).

Abstract: Provided is an earmuff that is compact and lightweight, has high sound insulating performance, is capable of insulating sound of a specific frequency range, and has excellent air permeability. The earmuff includes a headband, and two ear cups each having a housing attached to an end part of the headband and an ear pad locked to the housing, the housing has a housing opening part, a sound insulation structure is disposed in the housing opening part and insulates sound of a specific frequency range, and the housing opening part having the sound insulation structure disposed therein has a ventilation hole.

Abstract: An object is to provide a soundproofing structure which exhibits high soundproofing performance in a broad frequency band, can be miniaturized, can ensure ventilation properties, and has a light transmittance, and a cylindrical structure, a window member, and a partition member including this soundproofing structure. Provided is a soundproofing structure including: a soundproofing cell which includes a frame having a frame hole portion passing therethrough and a film that covers the frame hole portion and is fixed to the frame, in which the film has a plurality of through-holes passing therethrough in a thickness direction, an average opening diameter of the through-holes is in a range of 0.1 ?m to 250 ?m, and a vertical direction of a film surface is disposed so as to be inclined with respect to a direction of a sound source to be soundproofed.

Abstract: An object is to provide a soundproofing structure, a partition structure, a window member, and a cage which exhibit high soundproofing performance in a broad frequency band, can be miniaturized, can ensure ventilation properties, and have a light transmittance. Provided is a soundproofing structure including: a plate-like member which has a plurality of through-holes passing therethrough in a thickness direction; and a frame member which includes an opening portion, in which membrane vibration of the plate-like member is enabled by fixing the plate-like member to a peripheral edge of the opening portion of the frame member, an average opening diameter of the through-holes is in a range of 0.1 ?m to 250 ?m, and a first unique vibration frequency of the membrane vibration of the plate-like member is present in a range of 10 Hz to 100000 Hz.

Abstract: Provided is a soundproofing structure including: a plate-like member which has a plurality of through-holes passing therethrough in a thickness direction, in which in a case where an average opening diameter of the through-holes is 0.1 ?m or greater and less than 100 ?m, and in a case where the average opening diameter of the through-holes is set as phi (?m) and a thickness of the plate-like member is set as t (?m), an average opening ratio rho of the through-holes is greater than 0 and less than 1 and falls in a range where a center is rho_center=(2+0.25×t)×phi?1.6, a lower limit is rho_center?(0.052×(phi/30)?2), and an upper limit is rho_center+(0.795×(phi/30)?2).

Abstract: There is provided a soundproof structure that can selectively block sound having a specific frequency emitted from equipment, automobiles, and general households and can change the cutoff frequency of the sound in accordance with a change in the frequency of sound to be blocked. The above problem is solved by providing a laminated film, in which two or more films each including one or more holes drilled therein are laminated, and two rigid frames, which fix the laminated film so as to be interposed from both sides of the laminated film, and making at least parts of the one or more holes in the respective films of the laminated film overlap each other.

Abstract: A soundproof structure has one or more soundproof cells. Each of the one or more soundproof cells includes a frame having a through-hole, a film fixed to the frame, and an opening portion configured to include one or more holes drilled in the film. Neither end portions of the through-hole of the frame are closed. The soundproof structure has a shielding peak frequency, which is determined by the opening portion of each of the one or more soundproof cells and at which a transmission loss is maximized, on a lower frequency side than a first natural vibration frequency of the film of each of the one or more soundproof cells, and selectively insulates sound in a predetermined frequency band including the shielding peak frequency at its center.