The present disclosure relates in general to an acoustic device, and more particularly, to a suspension element of an acoustic device.
A user of an acoustic device enjoys hearing sounds that are pleasant, crisp, and free of noise. Inherent design flaws in the acoustic device can contribute to undesirable sound heard by the user. An improperly designed suspension element of the acoustic device may contribute directly or indirectly to the undesirability of sound heard by the user.
All examples and features mentioned below can be combined in any technically possible way.
In one aspect, an acoustic device includes a diaphragm, a frame, and a suspension element coupled to the diaphragm and to the frame. The diaphragm is movable in a reciprocating manner relative to the frame. According to a particular implementation, the suspension element includes a first surround element and a second surround element that are located adjacent to each other. At least one of the surround elements includes at least one or more openings. The at least one or more openings are configured to enable venting of an interior of the surround elements to an exterior of the surround elements.
According to a particular implementation, the at least one or more openings are located at an edge of the at least one of the surround elements adjacent to the other surround element. According to another particular implementation, the at least one or more openings are located in both of the surround elements.
In a particular implementation, a spacer is disposed between the first surround element and the second surround element, and the spacer is disposed between contacting parts of the surround elements. A number or placement of the openings is based on at least one of a particular acoustic impedance of the suspension element or a particular resonance effect of the acoustic device.
In another aspect, the acoustic device includes a spacer disposed between the first surround element and the second surround element. In a particular implementation, the spacer is disposed between the surround elements. For example, the spacer may be positioned between two openings defined by the first surround element and the second surround element.
In another example, a method includes forming a first surround element and forming a second surround element. At least one of the surround elements includes at least one or more openings that are located at an edge of the at least one of the surround elements. According to a particular implementation, forming the at least one of the surround elements is based on a particular acoustic impedance of the at least one of the surround elements adjacent to the other surround element. According to another particular implementation, forming the at least one of the surround elements is based on a particular resonance effect of an acoustic device.
In an implementation, the method includes coupling the first surround element with the second surround element. According to a particular implementation, coupling the first surround element with the second surround element includes coupling a spacer between the first surround element and the second surround element.
In another aspect, each of the first surround element and the second surround element include one or more openings that are located at edges of the respective surround element. According to a particular implementation, coupling the first surround element with the second surround element includes aligning the one or more openings of the first surround element with the one or more openings of the second surround element. According to another particular implementation, coupling the first surround element with the second surround element includes offsetting the one or more openings of the first surround element relative to the one or more openings of the second surround element.
A suspension element used in an acoustic device is disclosed. The suspension element includes one or more surround elements. At least one surround element (of the suspension element) is designed or formed to include ventilation (e.g., an opening or a hole) for the suspension element. Forming the ventilation into a surround element improves manufacturability of the acoustic device by eliminating an additional component for venting. Further, forming the ventilation into the surround element simplifies time and complexity during the attachment process of the suspension element to the acoustic device as compared to an acoustic device that does not have a surround element that supports ventilation.
Tunable venting for dynamic operation of the surround elements is achieved based on a particular geometry of the openings. The particular geometry of the openings is associated with one or more characteristics of at least one of the surround elements, the suspension element, or the acoustic device. The one or more characteristics may be associated with acoustic impedance or resonance effect. Acoustic impedance considerations may include a size of vents based on flow noise, resonances, and open area vs. enclosed volume, among other factors. Improperly formed openings may create a ticking, buzzing, whistling, or other objectionable noise. The suspension element may be formed using a direct form geometry approach for venting, where openings for venting are based on a particular acoustic impedance or resonance effect to be achieved for the acoustic device.
Turning to
The suspension element 104 is be coupled to the diaphragm 114 and to the frame 102 using any suitable method, including, but not limited to, use of an adhesive or by melting material of the suspension element 104 to the diaphragm 114 and the frame 102. The suspension element 104 is be made from any suitable material, including, but not limited to, fabric, rubber, foam, metal, polymer, polyurethane plastic, such as thermoplastic polyurethane, or a composite thereof. In some implementations, the suspension element 104 includes rib and groove features (not shown) which may enhance axial stiffness, free length, force-deflection relationships, and buckling resistance.
The first surround element 202 includes one or more openings 206 (e.g., one or more features, such as one or more grooves) located at an edge of the first surround element 202. The openings 206 are configured to enable ventilation of an interior (e.g., an interior environment) of the surround elements 202, 204. As shown in
According to an implementation, the one or more openings 206 are based on a particular acoustic impedance of the suspension element 200. In another example, the openings 206 are based on a particular resonance effect of an acoustic device. The acoustic device may correspond to the acoustic device 100 of
Each of the surround elements 202, 204 may be formed via compression molding, injection molding, or thermal forming. One or both of the surround elements 202, 204 may be made from porous material. The material of the surround elements 202, 204 may be initially dense and very porous. Subsequently, the surround elements 202, 204 may be compressed to lower the porosity of the material.
In some implementations, the first surround element 202 is coupled to the second surround element 204. For example, the first surround element 202 is coupled (connected or otherwise bonded) to the second surround element 204 by an adhesive material, such as glue, or by fusing (e.g., melting) the first surround element 202 to the second surround element 204. While coupled, an interior chamber (associated with a volume of air) is defined by at least the first surround element 202 and the second surround element 204 define. Additionally, while coupled, the first surround element 202 and the second surround element 204 form the suspension element 200 (e.g., a single structure) having one or more openings, such as a representative opening 206 depicted in
The spacer 402 is made of a material from at least one of plastic, rubber, foam, fabric, or metal. In some implementations, the spacer 402 may be made from a porous material. In other implementations, the spacer 402 may be made from a non-porous material. The spacer 402 is coupled or bonded using any suitable method (e.g., via an adhesive or by melting the material of the suspension element to the spacer, among others).
The first surround element 502 includes one or more openings 506 (e.g., one or more features, such as one or more grooves) that are located at an edge of the first surround element 502. The second surround element 504 includes one or more openings 508 (e.g., one or more features, such as one or more grooves) that are located at an edge of the second surround element 504. The openings 506, 508 are configured to vent an interior of the surround elements 502, 504 with an exterior of the surround elements 502, 504. The one or more openings 506 are formed into the surround element 502. The one or more openings 508 are formed into the surround element 504.
As shown in
According to a particular example, the openings 506, 508 are based on a particular acoustic impedance of the suspension element 500. In an implementation, the openings 506, 508 are based on a particular resonance effect of an acoustic device. The acoustic device may correspond to the acoustic device 100 of
The spacer 702 is made of a material from at least one of plastic, rubber, foam, fabric, or metal. The spacer 702 may be made from a porous material. Alternatively, the spacer 702 may be made from a non-porous material. The spacer 702 is coupled or bonded using any suitable method (e.g., via an adhesive or by melting the material of the suspension element to the spacer, among others).
The method 800 includes, at 802, forming a first surround element. According to an implementation, the first surround element may be the first surround element 202 of
The method 800 also includes, at 804, forming a second surround element. At least one of the surround elements includes at least one or more openings (e.g., features or grooves) that are located at an edge of the at least one of the surround elements. According to an implementation, the second surround element may be the second surround element 204 of
In one aspect, forming the at least one of the surround elements is based on at least one of a particular acoustic impedance of the at least one of the surround elements adjacent to the other surround element or a particular resonance effect of an acoustic device. In an implementation, the at least one of the particular acoustic impedance or the particular resonance effect is based on a size of the at least one or more openings. According to a particular implementation, the one or more openings may correspond to the one or more openings 206 of
According to an implementation, the first surround element includes at least one or more openings that are located at an edge of the at least one of the surround elements. The first surround element may be the first surround element 202 of
In another aspect, the method 800 may include coupling the first surround element with the second surround element. In an example, the coupling may be illustrated by the cross-sectional view 300 of
According to an implementation, the coupling of the first surround element with the second surround element includes aligning the at least one or more openings of the first surround element with the at least one or more openings of the second surround element. In an example, the aligning of the at least one or more openings is illustrated by the suspension element 500 of
As with the above described flowchart and all examples disclosed herein, those skilled in the art may make numerous uses and modifications of and departures from the specific apparatus and disclosed techniques without departing from the overall concepts. For example, selected implementations of a suspension element in accordance with the present disclosure may include all, fewer, or different components than those described with reference to one or more of the preceding figures. Spacers and vent through-hole tangency may be present or selectively absent from implementations. The disclosed examples should be construed as embracing each and every novel feature and novel combination of features present in or possessed by the apparatus and techniques disclosed herein and limited only by the scope of the appended claims, and equivalents thereof.