Bass enhancement device and sound box
By combining a propagation channel and an expansion component in the speaker enclosure, and utilizing the coupling resonance between the propagation channel and the cavity, the problem of poor bass performance in small speakers is solved, achieving efficient bass enhancement within a limited space and reducing costs.
Patent Information
- Application Number
- CN202411474130.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-22
- Publication Date
- 2026-04-24
AI Technical Summary
Existing technologies struggle to effectively improve bass performance in miniaturized speakers, and existing bass enhancement methods are either costly or structurally complex, making it difficult to achieve efficient bass gain within limited space.
The bass enhancement device, including a propagation channel and an expansion component, is used. Through the coupling resonance between the propagation channel and the cavity, combined with the virtual expansion component to increase the volume, the phase consistency of the sound waves radiated from the front of the diaphragm is enhanced, the resonant frequency is reduced, and the bass effect is enhanced.
Without increasing speaker size, this method reduces costs, significantly improves bass performance, decreases resonant frequencies, enhances bass depth and intensity, and minimizes negative impacts on mid and high frequencies.
Smart Images
Figure CN121924403A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of sound quality enhancement technology, and in particular to a bass enhancement device and speaker. Background Technology
[0002] As speakers become smaller and thinner, the stiffness of the speaker vibration system will increase, reducing the low-frequency sensitivity of the speaker. On the other hand, the space reserved for the rear cavity of the speaker is limited. A small rear cavity will increase the resonant frequency of the speaker, further reducing the low-frequency sensitivity of the speaker, making the sound quality sound like it lacks low-frequency components.
[0003] In existing technologies, bass sound quality is improved through methods such as bass reflex ports, passive radiators, labyrinth cabinet structures, and virtual expansion materials. Bass reflex ports, passive radiators, and labyrinth cabinet structures all utilize sound waves radiated from the back of the speaker diaphragm, ensuring that the sound waves radiated from the back of the diaphragm are nearly in phase with those radiated from the front of the diaphragm in the main frequency range, thereby increasing the low-frequency sensitivity of the speaker enclosure. Virtual expansion materials primarily fill the rear cavity of the speaker enclosure, virtually expanding its volume to lower the resonant frequency and thus enhance bass.
[0004] However, bass reflex tubes have high installation requirements, are prone to airflow noise, and require a high overall Q value for the loudspeaker. Passive radiators and virtual expansion materials for filling the rear cavity are also expensive, while labyrinth cabinets have complex structures and large volumes. Summary of the Invention
[0005] This application provides a bass enhancement device and speaker to solve the problem of how to reduce costs and improve bass performance within a limited space.
[0006] To achieve the above objectives, the technical solution of this application is as follows:
[0007] On one hand, this application provides a bass enhancement device, including: a body, at least one crossover component, and an expansion component; the body has a cavity, and the body is provided with a mounting part and at least one sound output part, the mounting part is connected to the cavity, the mounting part is used to mount a sound-emitting component, and the sound-emitting component is partially located in the cavity; the crossover component is disposed in the cavity, the crossover component has a propagation channel, the two ends of the propagation channel are respectively connected to the cavity and the sound output part, the propagation channel is arranged around the axis of the mounting part, and the propagation channel is used to transmit the sound emitted by the sound-emitting component from the cavity to the sound output part; the expansion component is disposed in the propagation channel and at least one of the propagation channel and the cavity 130.
[0008] In some possible implementations, the bass enhancement device provided in this application embodiment includes a propagation channel comprising multiple sub-channels, each sub-channel being arranged sequentially around the axis of the mounting portion.
[0009] In some possible implementations, the bass enhancement device provided in this application embodiment includes a crossover component comprising multiple baffles and multiple separators. The separators are sequentially spaced from the mounting portion to the side wall of the main body, and the separators adjacent to the inner side wall of the main body are connected to the inner side wall of the main body.
[0010] Each partition is spaced around the axis of the mounting part, and two adjacent partitions, as well as the partitions between two adjacent partitions, together form a sub-channel.
[0011] In some possible implementations, the bass enhancement device provided in this application embodiment has a bent sub-channel, with one end of the sub-channel connected to the corresponding sound output section.
[0012] In some possible implementations, the bass enhancement device provided in this application embodiment has the two ends of the baffle member along the axis of the mounting portion connected to the two ends of the main body along the axis of the mounting portion, respectively.
[0013] The two ends of the separator along the axis of the mounting part are respectively connected to the two ends of the main body along the axis of the mounting part.
[0014] In some possible implementations, the bass enhancement device provided in this application embodiment has a spiral-shaped propagation channel.
[0015] In some possible implementations, the bass enhancement device provided in this application embodiment has an expansion component disposed in part of the propagation channel.
[0016] In some possible implementations, the bass enhancement device provided in this application embodiment has an expansion component that is at least one of N'Bass material, zeolite, activated carbon, melamine foam, and aerogel.
[0017] In some possible implementations, the bass enhancement device provided in this application embodiment has an expansion member located in at least one of the upper and lower parts of the sub-channel;
[0018] Alternatively, the expansion component may be located on at least one of the opposite sides of the subchannel.
[0019] On the other hand, this application provides a speaker, including a sound-emitting element and a bass enhancement device in any of the above embodiments.
[0020] The bass enhancement device and speaker enclosure provided in this application include: a main body, at least one crossover assembly, and an expansion component; the main body has a cavity, and a mounting part and at least one sound outlet are provided on the main body. The mounting part communicates with the cavity and is used to mount a sound-generating component, with the sound-generating component partially located within the cavity; the crossover assembly is disposed within the cavity and has a propagation channel, with both ends of the propagation channel communicating with the cavity and the sound outlet respectively, and the propagation channel is arranged around the axis of the mounting part; the expansion component is disposed within at least one of the propagation channel and the cavity. The sound generated by the sound-generating component is transmitted to the sound outlet through the cavity, the propagation channel, and the expansion component. The sound waves generated by the sound-generating component resonate with the open cavity formed by the cavity and the propagation channel, thereby enhancing the sound waves radiated to the front by the diaphragm of the sound-generating component; the sound waves on the back of the diaphragm are nearly in phase with the sound waves emitted by the sound-generating component within a certain frequency range through the propagation channel, further enhancing the bass. Finally, the resonant frequency is reduced by a small amount of expansion component, further enhancing the bass and reducing costs. Therefore, the bass enhancement device in this application embodiment reduces costs and enhances bass performance by combining the propagation channel with the expansion component. Attached Figure Description
[0021] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.
[0022] Figure 1 Schematic diagram of the bass enhancement device and speaker provided in the embodiments of this application Figure 1 ;
[0023] Figure 2 for Figure 1 A cross-sectional view of the bass enhancement device and speaker enclosure;
[0024] Figure 3 Schematic diagram of the bass enhancement device and speaker provided in the embodiments of this application Figure 2 ;
[0025] Figure 4 for Figure 3 Side view of the bass enhancement device and speaker cabinet Figure 1 ;
[0026] Figure 5 for Figure 4 A cross-sectional view of the bass enhancement device and the AA in the speaker enclosure;
[0027] Figure 6 for Figure 4 A cross-sectional view of the bass enhancement device and the bass booster in the speaker enclosure;
[0028] Figure 7 for Figure 3 Side view of the bass enhancement device and speaker cabinet Figure 2 ;
[0029] Figure 8 for Figure 7 A cross-sectional view of the bass enhancement device and the CC in the speaker enclosure;
[0030] Figure 9 for Figure 7 A cross-sectional view of the bass enhancement device and the DD in the speaker enclosure;
[0031] Figure 10 Schematic diagram of the bass enhancement device and speaker provided in the embodiments of this application Figure 2 ;
[0032] Figure 11 for Figure 10 Side view of the bass enhancement device and speaker cabinet Figure 3 ;
[0033] Figure 12 for Figure 11 A cross-sectional view of the bass enhancement device and the EE in the speaker enclosure;
[0034] Figure 13 for Figure 11 A cross-sectional view of the bass enhancement device and the FF in the speaker enclosure;
[0035] Figure 14 Schematic diagram of the bass enhancement device and speaker provided in the embodiments of this application Figure 3 ;
[0036] Figure 15 for Figure 10 Side view of the bass enhancement device and speaker cabinet Figure 4 ;
[0037] Figure 16 for Figure 15 A cross-sectional view of the bass enhancement device and the GG in the speaker enclosure;
[0038] Figure 17 for Figure 15 A cross-sectional view of the bass enhancement device and the HH in the speaker enclosure;
[0039] Figure 18 Schematic diagram of the expansion component and propagation channel in the bass enhancement device provided in the embodiments of this application. Figure 1 ;
[0040] Figure 19 Schematic diagram of the expansion component and propagation channel in the bass enhancement device provided in the embodiments of this application. Figure 2 ;
[0041] Figure 20 Schematic diagram of the expansion component and propagation channel in the bass enhancement device provided in the embodiments of this application. Figure 3 ;
[0042] Figure 21 Schematic diagram of the expansion component and propagation channel in the bass enhancement device provided in the embodiments of this application. Figure 4 .
[0043] Explanation of reference numerals in the attached figures:
[0044] 10 - Sound-producing components;
[0045] 100-Ontology;
[0046] 110 - Out-of-voice section;
[0047] 120 - Installation Department;
[0048] 130 - Cavity;
[0049] 200-way component;
[0050] 210 - Propagation channel; 211 - Sub-channel;
[0051] 300 - Expansion Parts;
[0052] 410 - Partition;
[0053] 420 - Separator.
[0054] The accompanying drawings have illustrated specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to specific embodiments. Detailed Implementation
[0055] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.
[0056] It should be noted that in the description of the embodiments of this application, the terms "upper", "lower", "inner", "outer" and other terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description, and are not intended to indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the embodiments of this application.
[0057] Furthermore, it should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.
[0058] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," and "fixation," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. First, the relevant concepts or terms involved in this application will be explained.
[0059] Virtual expansion materials refer to special acoustic materials or technologies that can simulate an expansion effect without increasing the physical volume of space. These materials or technologies alter the propagation characteristics of sound waves, enabling acoustic systems, such as speakers and headphones, to achieve an effect similar to a larger volume of space during sound propagation. This is primarily achieved by utilizing the principles of acoustic resonance and interference. It can absorb and scatter sound waves, thereby changing the propagation path and phase of the sound waves.
[0060] As speakers become smaller and thinner, the stiffness of the speaker's vibration system increases, reducing the speaker's low-frequency sensitivity. On the other hand, the limited space allocated to the rear cavity of the speaker increases the resonant frequency, further reducing low-frequency sensitivity and resulting in a lack of bass components in the sound. Meanwhile, as people demand higher levels of entertainment experiences in music, movies, and games, the demand for bass is increasing.
[0061] In existing technologies, bass response is improved through methods such as bass reflex ports, passive radiators, labyrinth cabinet structures, and virtual expansion materials. A bass reflex port appropriately alters the phase of the sound waves radiated from the back of the speaker diaphragm, making them nearly in phase with the sound waves radiated from the front of the diaphragm in the main frequency range, effectively increasing the low-frequency limit of the speaker enclosure. However, bass reflex ports require high design and adjustment precision; inaccurate installation and adjustment can easily lead to phase distortion. Poor design or manufacturing of the bass reflex port can also easily generate airflow noise, and the overall Q value of the speaker must not exceed 0.6, which is difficult to achieve for small speakers. Passive radiators can be used to replace bass reflex ports to enhance the bass of the speaker enclosure while eliminating airflow noise, but passive radiators are more expensive, less efficient, and have limited low-frequency extension. Labyrinth cabinets are bulky, complex, and require high cabinet sealing, and are mainly used for bass enhancement in large speaker enclosures. It should be noted that the overall Q value (Quality Factor) of a loudspeaker is a parameter that measures the performance of a loudspeaker. It reflects the resonant characteristics of the loudspeaker. The higher the Q value, the stronger the loudspeaker's ability to deviate from the resonant frequency, and the flatter its frequency response curve.
[0062] Bass reflex ports, passive radiators, and labyrinth cabinet structures all utilize sound waves from the back of the speaker diaphragm, and are prone to sound trailing. Virtual expansion material is mainly filled in the rear cavity of the speaker to enhance the internal sound resonance, thereby enhancing the bass. For a speaker enclosure composed of the same speaker, the smaller the rear cavity volume, the better the bass enhancement effect of the virtual expansion material. However, the bass enhancement is limited for speakers with larger rear cavities, and the high cost of virtual expansion material restricts its application. Furthermore, bass reflex ports have high installation requirements and are prone to airflow noise; passive radiators and rear cavity filling with virtual expansion material are expensive; and labyrinth cabinet structures are complex and bulky. The low-frequency gain of the above four types of speakers is insufficient. Therefore, how to achieve higher low-frequency gain in a speaker enclosure within a limited space is a problem that urgently needs to be solved.
[0063] In view of this, this application provides a bass enhancement device and speaker, including: a body, at least one crossover component, and an expansion component; the body has a cavity, and a mounting part and at least one sound output part are provided on the body, both of which are connected to the cavity; the mounting part is used to mount a sound-generating component, and the sound-generating component is partially located within the cavity; the crossover component is disposed within the cavity, and the crossover component has a propagation channel that is connected to the cavity and is arranged around the axis of the mounting part; the expansion component is disposed within at least one of the propagation channel and the space between the propagation channel and the mounting part. The sound generated by the sound-generating component is transmitted to the sound output part through the cavity, the propagation channel, and the expansion component, and is coupled and resonated with the sound-generating component through the cavity and the propagation channel to enhance the sound waves radiated to the front of the sound-generating component's diaphragm; the sound waves on the back of the diaphragm are transmitted through the propagation channel and are approximately in phase with the sound waves emitted by the sound-generating component within a certain frequency range, further enhancing the bass; finally, the volume is virtually expanded by a small amount of expansion component, reducing the resonant frequency and further enhancing the bass while reducing costs. Therefore, the bass enhancement device in this application embodiment reduces costs and enhances bass performance by combining the propagation channel with the expansion component.
[0064] The following is combined with Figures 1 to 21 The present application will be described in detail with reference to specific embodiments.
[0065] Figure 1 Schematic diagram of the bass enhancement device and speaker provided in the embodiments of this application Figure 1 ; Figure 2 for Figure 1 A cross-sectional view of the bass enhancement device and speaker enclosure. Figure 3 Schematic diagram of the bass enhancement device and speaker provided in the embodiments of this application Figure 2 ; Figure 4 for Figure 3 Side view of the bass enhancement device and speaker cabinet Figure 1 ; Figure 5 for Figure 4 A cross-sectional view of the bass enhancement device and the AA in the speaker enclosure; Figure 6 for Figure 4 The bass enhancement device and the cross-sectional view of the bass booster in the speaker enclosure. Figure 7 for Figure 3 Side view of the bass enhancement device and speaker cabinet Figure 2 ; Figure 8 for Figure 7 A cross-sectional view of the bass enhancement device and the CC in the speaker enclosure; Figure 9 for Figure 7 A cross-sectional view of the bass enhancement device and the DD in the speaker enclosure. Figure 10 Schematic diagram of the bass enhancement device and speaker provided in the embodiments of this application Figure 2 ; Figure 11 for Figure 10 Side view of the bass enhancement device and speaker cabinet Figure 3 ; Figure 12 for Figure 11 A cross-sectional view of the bass enhancement device and the EE in the speaker enclosure;
[0066] Figure 13 for Figure 11 A cross-sectional view of the bass enhancement device and the FF in the speaker enclosure. Figure 14 Schematic diagram of the bass enhancement device and speaker provided in the embodiments of this application Figure 3 ; Figure 15 for Figure 10 Side view of the bass enhancement device and speaker cabinet Figure 4 ; Figure 16 for Figure 15 A cross-sectional view of the bass enhancement device and the GG in the speaker enclosure; Figure 17 for Figure 15 The bass enhancement device and the cross-sectional view of HH in the speaker enclosure. Figure 18 Schematic diagram of the expansion component and propagation channel in the bass enhancement device provided in the embodiments of this application. Figure 1 ; Figure 19 Schematic diagram of the expansion component and propagation channel in the bass enhancement device provided in the embodiments of this application. Figure 2 ; Figure 20 Schematic diagram of the expansion component and propagation channel in the bass enhancement device provided in the embodiments of this application. Figure 3 ; Figure 21 Schematic diagram of the expansion component and propagation channel in the bass enhancement device provided in the embodiments of this application. Figure 4 It should be noted that the accompanying drawings can be combined arbitrarily or used individually to illustrate the bass enhancement device and speaker in the embodiments of this application. The embodiments of this application do not limit this, and the order or sequence of the accompanying drawings is not limited in the embodiments of this application.
[0067] On one hand, this application provides a bass enhancement device, including: a body 100, at least one crossover component 200, and an expansion member 300; the body 100 has a cavity 130, and the body 100 is provided with a mounting part 120 and at least one sound output part 110, the mounting part 120 is connected to the cavity 130, the mounting part 120 is used to mount a sound-emitting component 10, and the sound-emitting component 10 is partially located in the cavity 130; the crossover component 200 is disposed in the cavity 130, the crossover component 200 has a transmission channel 210, the two ends of the transmission channel 210 are respectively connected to the cavity 130 and the sound output part 110, the transmission channel 210 is arranged around the axis of the mounting part 120, and the transmission channel 210 is used to transmit the sound emitted by the sound-emitting component 10 from the cavity 130 to the sound output part 110; the expansion member 300 is disposed in at least one of the transmission channel 210 and the space between the transmission channel 210 and the mounting part 120.
[0068] The main body 100 is provided with at least one sound-emitting part 110 and a mounting part 120. The mounting part 120 is used to mount the sound-emitting element 10. The main body 100 has a cavity 130. For example, the sound-emitting part 110 can be a sound outlet, the mounting part 120 can be a mounting hole, the sound-emitting element 10 can be a loudspeaker, and the propagation channel 210 is a sound propagation channel. The mounting hole and the sound outlet are disposed on the cavity wall of the main body 100 and both communicate with the cavity 130. The mounting hole is used to mount the loudspeaker, which faces outwards. The sound propagation channel communicates with the sound outlet to propagate the sound emitted from the back of the loudspeaker to the outside.
[0069] For example, the mounting part 120 is located at the top of the body 100, and the sound-emitting part 110 is located on the side of the body 100, or the sound-emitting part 110 is located at the top of the body 100. This application embodiment does not limit the number and position of the sound-emitting parts 110. For example, the number of sound-emitting parts 110 can be multiple, spaced apart around the periphery of the body 100. Adjacent sound-emitting parts 110 can be located on the same plane or on different planes; this application embodiment does not limit this. It should be noted that the sound-emitting parts 110 can be arranged in one or more rows along at least one of the height direction and the circumferential direction of the body 100. For example, the sound-emitting parts 110 can be arranged in one or more rows along the height direction of the body 100, or along the circumferential direction of the body 100, or along both the circumferential and height directions of the body 100. The distance between the mounting part 120 and the sound-emitting part 110 can be set according to actual conditions; this application embodiment does not limit this. This application does not limit the specific structure of the mounting part 120 and the sound output part 110. For example, the mounting part 120 is a mounting hole and the sound output part 110 is a sound output hole.
[0070] In some embodiments, the propagation channel 210 includes a plurality of sub-channels 211 arranged along a direction away from the center of the cavity 130, and the length of the plurality of sub-channels 211 gradually increases. Adjacent sub-channels 211 in the plurality of sub-channels 211 are interconnected, and the sub-channel 211 farthest from the center of the acoustic cavity in the plurality of sub-channels 211 is connected to the sound output section 110.
[0071] The expansion component 300 can be at least one of N'Bass material, zeolite, activated carbon, melamine foam, and aerogel, etc., and this application embodiment does not limit this. Furthermore, this application embodiment does not limit the shape of the expansion component 300; for example, the expansion component 300 can be in powder, granular, sheet, or block form. This application embodiment does not limit the shape of the body 100; for example, the body 100 can be cylindrical or prismatic, and this application embodiment does not limit this. N'Bass material refers to a virtual expansion material, such as a nanoporous acoustic material.
[0072] In some embodiments, the body 100 is cylindrical in shape, and the propagation channel 210 communicates with the cavity 130. There are multiple propagation channels 210, which are evenly distributed axially around the mounting portion 120. Each propagation channel 210 has two partitions 410 in its region, and multiple separators 420 arranged sequentially between the two partitions 410 along a direction away from the center of the cavity. The space between two adjacent separators 420 forms a sub-channel 211, and the multiple sub-channels 211 are sequentially connected end-to-end. The propagation channel 210 is filled with the expansion member 300. It should be noted that, along the height direction of the propagation channel 210, the propagation channel 210 may be partially filled with the expansion member 300, or the entire propagation channel 210 may be filled with the expansion member 300.
[0073] Furthermore, it should be noted that the way the expansion member 300 is filled in the cross section perpendicular to the center line of the propagation channel 210 can be arbitrary, such as the expansion member 300 filling the entire cross section, the expansion member 300 being filled on only one side in the height direction, the expansion member 300 being filled on both sides in the height direction, the expansion member 300 being filled on only one side in the width direction, or the expansion member 300 being filled on both sides in the width direction, etc.
[0074] In order to achieve better bass enhancement, in addition to filling the propagation channel 210 with the expansion component 300, the back cavity of the speaker can also be filled with the expansion component 300, that is, the expansion component 300 is located between the propagation channel 210 and the mounting part 120.
[0075] It should be noted that, since the first-order acoustic mode frequency of the cavity of a small sealed speaker is usually much higher than the first-order structural mode frequency of the sound-generating element 10, the coupling between the two modes is very weak. However, for the cavity of the bass enhancement device proposed in this application, without increasing the overall size of the speaker, through appropriate design, such as the length of the propagation channel 210, the cross-sectional size of the propagation channel 210, and the number of propagation channels 210, the first-order acoustic mode frequency of the open cavity formed by the propagation channel 210 and the cavity 130 can be lower than the first-order structural mode frequency of the sound-generating element 10, and the two modes can be coupled.
[0076] The bass enhancement device in this embodiment has the following bass enhancement mechanism: First, the coupling resonance of the first-order acoustic mode of the open cavity formed by the propagation channel 210 and the cavity 130 with the first-order structural mode of the sound-emitting element 10 can enhance the sound waves radiated to the front by the diaphragm of the sound-emitting element 10; second, the sound waves on the back of the diaphragm of the sound-emitting element 10, after passing through the propagation channel 210, are nearly in phase with the sound waves on the front of the diaphragm of the sound-emitting element 10 within a certain frequency range, further enhancing the bass; third, the propagation channel 210 is virtually extended by the expansion element 300, reducing the resonant frequency and further enhancing the bass. It should be noted that the amplitude of the mid-to-high frequency sound waves on the back of the diaphragm of the sound-emitting element 10 after passing through the propagation channel 210 is much smaller than the amplitude of the sound waves radiated to the front by the diaphragm of the sound-emitting element 10, and the expansion element 300 can eliminate the negative impact caused by standing waves. Therefore, the bass enhancement device provided in this application has very little impact on the mid-to-high frequency of the speaker.
[0077] Therefore, in the bass enhancement device of this embodiment, the sound generated by the sound-emitting element 10 is transmitted to the sound output section 110 through the cavity 130, the propagation channel 210, and the expansion element 300. The sound is coupled and resonates with the sound-emitting element 10 through the open cavity formed by the propagation channel 210 and the cavity 130, thereby enhancing the sound waves radiated to the front by the diaphragm of the sound-emitting element 10. The sound waves on the back of the diaphragm, via the propagation channel 210, are nearly in phase with the sound waves emitted by the sound-emitting element 10 within a certain frequency range, further enhancing the bass. Finally, the length of the propagation channel is virtually extended by a small amount of expansion element 300, reducing the resonant frequency and further enhancing the bass while reducing cost. For example, the propagation channel 210 occupies space in the cavity 130, reducing the filling space of the expansion element 300, thus reducing the amount of expansion element 300 used. The propagation channel 210 can enhance the bass effect through its own structure, and it can have a superimposed effect with the expansion element 300, further enhancing the bass effect. Therefore, the bass enhancement device in this embodiment of the application reduces costs and enhances bass performance by combining the transmission channel 210 with the expansion component 300.
[0078] In some possible implementations, the bass enhancement device provided in this application embodiment includes a propagation channel 210 comprising a plurality of sub-channels 211, each sub-channel 211 being arranged sequentially around the axis of the mounting portion 120.
[0079] The propagation channel 210 includes multiple sub-channels 211, each sub-channel 211 arranged sequentially away from the axis of the mounting portion 120. Adjacent sub-channels 211 are connected. The outermost sub-channel 211 away from the axis of the mounting portion 120 is connected to the sound outlet portion 110, and the innermost sub-channel 211 facing the axis of the mounting portion 120 is connected to the cavity 130. It is understood that the sub-channels 211 help to disperse and prolong the propagation path of sound waves, lower the resonant frequency, and thus improve the intensity and depth of bass.
[0080] Furthermore, the sub-channels 211 can also be arranged around the inner periphery of the cavity 130. The distance between the innermost sub-channel 211 on the axis facing the mounting part 120 and the center of the cavity 130 can be set according to actual conditions, and this embodiment does not limit this. For example, the distance between the innermost sub-channel 211 and the center of the cavity 130 is half the length of the cavity, or the distance between the innermost sub-channel 211 and the center of the cavity 130 is one-third the length of the cavity, or the distance between the innermost sub-channel 211 and the center of the cavity 130 is one-quarter the length of the cavity.
[0081] In some possible implementations, the bass enhancement device provided in this application embodiment includes a crossover assembly 200 comprising a plurality of partitions 410 and a plurality of separators 420. The separators 420 are sequentially spaced from the mounting portion 120 to the sidewall of the body 100, and the separators 420 adjacent to the inner sidewall of the body 100 are connected to the inner sidewall of the body 100. Each partition 410 is spaced around the axis of the mounting portion 120, and two adjacent partitions 410 and the separators 420 between two adjacent partitions 410 together form a sub-channel 211.
[0082] For example, there are two partitions 420, spaced apart along the direction from the mounting portion 120 to the side wall of the main body 100. One partition 420 can abut against the inner side wall of the main body 100, and a transmission channel 210 is formed between two adjacent partitions 420, that is, the two partitions 420 form one transmission channel 210. Of course, the partition 420 on the side away from the mounting portion 120 can also leave a gap with the inner side wall of the main body 100 to form another transmission channel 210, that is, the two partitions 420 and the inner side wall of the main body 100 form two transmission channels 210.
[0083] Each partition 410 is spaced around the axis of the mounting portion 120 on the periphery of the cavity 130, and two adjacent partitions 410 separate at least two transmission channels 210.
[0084] The number of propagation channels 210 is multiple, and each propagation channel 210 is arranged at intervals or sequentially around the axis of the mounting portion 120 on the periphery of the cavity 130. The crossover assembly 200 includes multiple partitions 410, each partition 410 is arranged at intervals around the axis of the mounting portion 120 on the periphery of the cavity 130, and adjacent partitions 410 separate at least two propagation channels 210.
[0085] In other embodiments, the partitions 410 are spaced apart around the axis of the mounting portion 120, and adjacent partitions 410 and the partitions 420 between adjacent partitions 410 together form a sub-channel 211. For example, each area where a transmission channel 210 is located is provided with two partitions 410 and a plurality of partitions 420 arranged sequentially between the two partitions 410 in a direction away from the center of the cavity. The space between adjacent partitions 420 forms a sub-channel 211, and the plurality of sub-channels 211 are connected end to end in sequence.
[0086] In some other possible implementations, the bass enhancement device provided in this application embodiment has a bent sub-channel 211, with one end of the sub-channel 211 connected to the sound output section 110.
[0087] For example, the body 100 is prismatic in shape, and the propagation channel 210 is composed of Z-shaped straight sub-channels 211. Multiple propagation channels 210 are evenly distributed axially around the mounting portion 120. Each propagation channel 210 has two partitions 410 in its area, and multiple separators 420 are arranged sequentially between the two partitions 410 along a direction away from the center of the cavity. The space between two adjacent separators 420 forms a sub-channel 211, and the multiple sub-channels 211 are sequentially connected end-to-end. Each separator 420 is flat and parallel to the same inner wall of the body 100. The propagation channel 210 at least partially fills the expansion member 300. One end of each sub-channel 211 is connected to the sound outlet portion 110.
[0088] Similarly, along the centerline of the propagation channel 210, the propagation channel 210 may be partially filled with the expansion member 300, or the entire propagation channel 210 may be filled with the expansion member 300. In a cross-section perpendicular to the centerline of the propagation channel 210, the way the expansion member 300 is filled in the propagation channel 210 can also be arbitrary.
[0089] In some possible implementations, the bass enhancement device provided in this application embodiment has the two ends of the partition 410 along the axis of the mounting portion 120 connected to the two ends of the main body 100 along the axis of the mounting portion 120, respectively; and the two ends of the separator 420 along the axis of the mounting portion 120 connected to the two ends of the main body 100 along the axis of the mounting portion 120, respectively.
[0090] The propagation channel 210 is provided with at least one layer along the height direction of the main body 100, with adjacent layers separated from each other, and each layer is provided with at least one sound output section 110.
[0091] For example, when the propagation channel 210 is provided in one layer, the two ends of the partition 410 along the axis of the mounting portion 120 are respectively connected to the two ends of the body 100 along the axis of the mounting portion 120, and the two ends of the separator 420 along the axis of the mounting portion 120 are respectively connected to the two ends of the body 100 along the axis of the mounting portion 120, thereby forming a connected propagation channel 210.
[0092] Specifically, and exemplaryly, the propagation channel 210 can be arranged in one layer along the height direction of the body 100. For example, the upper and lower parts of the propagation channel 210 are connected to the inner walls of the body 100 respectively, that is, the height of the propagation channel 210 is the same as the height of the cavity 130. Alternatively, the lower part of the propagation channel 210 is connected to the inner wall of the body 100, and there is a gap between the upper part of the propagation channel 210 and the inner wall of the body 100, that is, the height of the propagation channel 210 is less than the height of the cavity 130.
[0093] Of course, the propagation channel 210 can be provided in multiple layers along the height direction of the body 100. For example, a two-layer propagation channel 210 can be formed at the bottom of the body 100, a partition 410, another partition 410, and the top of the body 100, or a three-layer propagation channel 210 can be formed at the bottom of the body 100, a partition 410, another partition 410, yet another partition 410, and the top of the body 100.
[0094] Specifically, the propagation channel 210 can be arranged in four layers along the height direction of the main body 100, with adjacent layers separated by partition plates. Each layer has at least one sound output section 110. For example, each layer of the propagation channel 210 has two sound output sections. It should be noted that the projections of the sound output sections 110 of adjacent layers along the direction of the main body 100 may or may not overlap, and this embodiment does not impose any restrictions on this.
[0095] In some possible implementations, the bass enhancement device provided in this application embodiment has a spiral-shaped propagation channel 210.
[0096] For example, the propagation channel 210 is arranged in a spiral shape around the axis of the mounting part 120. It should be noted that the top of the propagation channel 210 can be on the same horizontal plane, or it can be spirally upward around the axis of the mounting part 120.
[0097] Specifically, the main body 100 is cylindrical in shape, and the empty propagation channel 210 is composed of spiral channels. Multiple propagation channels 210 are evenly distributed axially around the mounting part 120. The propagation channel 210 is filled with the expansion member 300.
[0098] Similarly, along the centerline of the propagation channel 210, the propagation channel 210 may be partially filled with the expansion member 300, or the entire propagation channel 210 may be filled with the expansion member 300. In a cross-section perpendicular to the centerline of the propagation channel 210, the way the expansion member 300 is filled in the propagation channel 210 can also be arbitrary.
[0099] In some possible implementations, the bass enhancement device provided in this application embodiment has an expansion member 300 disposed in part of the propagation channel 210.
[0100] For example, along the centerline of the propagation channel 210, the propagation channel 210 may be partially filled with the expansion element 300, or the entire propagation channel 210 may be filled with the expansion element 300. In a cross-section perpendicular to the centerline of the propagation channel 210, the arrangement of the expansion element 300 within the propagation channel 210 can also be arbitrary. Filling at least part of the propagation channel 210 with elements that can alter the propagation speed and frequency response of sound waves, thereby optimizing bass effects.
[0101] In some possible implementations, the bass enhancement device provided in this application embodiment uses an expansion component 300 that is at least one of N'Bass material, zeolite, activated carbon, melamine foam, and aerogel. For example, the expansion components 300 filling the propagation channel 210 and the cavity 130 can all be N'Bass material, or they can be used in combination. For example, the expansion component 300 in the propagation channel 210 can be N'Bass material, while the expansion component 300 in the cavity 130 can be aerogel. They can also be used in combination in the propagation channel 210 or the cavity 130. For example, the propagation channel 210 can be partially filled with N'Bass material and partially filled with aerogel; the cavity 130 can be partially filled with N'Bass material, partially filled with melamine foam, and partially filled with aerogel. This application does not specifically limit the combination method and type.
[0102] The expansion member 300 between the transmission channel 210 and the mounting part 120 is connected at both ends of the main body 100 along the axis of the mounting part 120.
[0103] The expansion member 300 is disposed within the cavity 130 around the axis of the mounting portion 120. For example, the expansion member 300 fills the entire cavity 130 around the axis of the mounting portion 120; or the expansion member 300 fills half of the cavity 130 around the axis of the mounting portion 120, and the projection of the expansion member 300 along the height direction of the body 100 is annular. The expansion member 300 can virtually enlarge the volume of the cavity 130, which helps to enhance the sound waves radiated to the front by the diaphragm of the sound-emitting member 10 within the cavity 130.
[0104] In some embodiments, there are multiple sound-emitting sections 110, each of which is spaced apart and arranged around the periphery of the body 100. It should be noted that the arrangement of multiple sound-emitting sections 110 can increase the number of sound wave exit points.
[0105] In some possible implementations, the bass enhancement device provided in this application embodiment has the expansion member 300 located in at least one of the upper and lower portions of the sub-channel 211; or, the expansion member 300 is located on at least one of opposite sides of the sub-channel 211.
[0106] Specifically, the expansion member 300 is located in at least one of the upper and lower parts of the sub-channel 211, or at least one of the upper, middle, and lower parts of the sub-channel 211, or at least one of opposite sides of the sub-channel 211. For example, the expansion member 300 is only located at the bottom of the sub-channel 211, or the expansion member 300 is located at the bottom and lower part of the sub-channel 211, while the middle part of the sub-channel 211 is not filled with the expansion member 300. Alternatively, the expansion member 300 is only located on one opposite side of the sub-channel 211, or the expansion member 300 is located on both opposite sides of the sub-channel 211, while the area between the two sides is not filled with the expansion member 300. Alternatively, the expansion member 300 covers the entire sub-channel 211, or the expansion member 300 covers half of the area of the sub-channel 211 in a top view. This embodiment of the application does not limit this and can be set according to the actual situation. Adjusting the position and filling amount of the expansion component 300 can change the resonant frequency and improve the bass enhancement effect.
[0107] It should be noted that the expansion component 300 is at least one of N'Bass material, zeolite, activated carbon, melamine foam and aerogel.
[0108] On the other hand, embodiments of this application provide a speaker, including a sound-emitting element 10 and any of the bass enhancement devices in the above embodiments.
[0109] This application does not limit the structure of the speaker. For example, the speaker includes a sound-emitting element 10 and the bass enhancement device in the above embodiment. The sound-emitting element 10 can be any sound-emitting element 10, the propagation channel 210 is a sound propagation channel, the mounting part 120 is a mounting hole, and the sound output part 110 is a sound output hole. The mounting hole and the sound output hole are disposed on the cavity wall of the main body 100 and are both connected to the cavity 130. The mounting hole is used to set the sound-emitting element 10, which faces the outside. The sound propagation channel is connected to the sound output hole to propagate the sound emitted from the back of the sound-emitting element 10 to the outside.
[0110] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.
[0111] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.
Claims
1. A bass enhancement device, characterized in that, include: The body (100), at least one crossover component (200), and expansion component (300); The body (100) has a cavity (130) inside, and the body (100) is provided with a mounting part (120) and at least one sound outlet part (110). The mounting part (120) communicates with the cavity (130), and the mounting part (120) is used to mount a sound-emitting element (10), and the sound-emitting element (10) is partially located inside the cavity (130). The crossover assembly (200) is disposed within the cavity (130). The crossover assembly (200) has a propagation channel (210). The two ends of the propagation channel (210) are respectively connected to the cavity (130) and the sound output part (110). The propagation channel (210) is arranged around the axis of the mounting part (120). The propagation channel (210) is used to transmit the sound emitted by the sound-emitting element (10) from the cavity (130) to the sound output part (110). The expansion member (300) is disposed within the propagation channel (210) and at least one of the propagation channel (210) and the cavity (130).
2. The bass enhancement device according to claim 1, characterized in that, The propagation channel (210) includes multiple sub-channels (211), and each sub-channel (211) is arranged sequentially around the axis of the mounting part (120).
3. The bass enhancement device according to claim 2, characterized in that, The crossover assembly (200) includes a plurality of partitions (410) and a plurality of separators (420). The separators (420) are arranged sequentially at intervals from the mounting part (120) to the side wall of the body (100). The separators (420) adjacent to the inner side wall of the body (100) are connected to the inner side wall of the body (100). Each of the partition members (410) is spaced apart around the axis of the mounting portion (120), and two adjacent partition members (410) and the partition members (420) between two adjacent partition members (410) together form the sub-channel (211).
4. The bass enhancement device according to claim 3, characterized in that, The sub-channel (211) is bent, and one end of the sub-channel (211) is connected to the sound output part (110).
5. The bass enhancement device according to claim 3, characterized in that, The two ends of the partition (410) along the axis of the mounting portion (120) are respectively connected to the two ends of the body (100) along the axis of the mounting portion (120). The separator (420) is connected to the two ends of the main body (100) along the axis of the mounting portion (120) at both ends.
6. The bass enhancement device according to claim 1, characterized in that, The propagation channel (210) is spiral-shaped.
7. The bass enhancement device according to any one of claims 1-6, characterized in that, The expansion component (300) is provided in part of the propagation channel (210).
8. The bass enhancement device according to any one of claims 1-5, characterized in that, The expansion component (300) is located within a cavity (130) of at least one of N'Bass material, zeolite, activated carbon, melamine foam, and aerogel.
9. The bass enhancement device according to claim 2 or 3, characterized in that, The expansion member (300) is located in at least one of the upper and lower parts of the sub-channel (211); Alternatively, the expansion member (300) may be located on at least one of the opposite sides of the sub-channel (211).
10. A speaker, characterized in that, It includes a sound-generating element (10) and a bass enhancement device as described in any one of claims 1 to 9.