Bass boost speaker

Abstract

The embodiment of the present invention discloses a bass enhancement speaker, which relates to the technical field of audio equipment. A bass enhancement speaker comprises: a box, a first speaker, a first passive radiator and a bass enhancement component; the first speaker, the first passive radiator and the bass enhancement component are all mounted on the box and connected to the cavity of the box; the bass enhancement component has a closed cavity with adjustable volume, and two vibration units arranged at both ends of the closed cavity for passive sound generation and active sound generation respectively; the closed cavity is separated from the outside of the box and the cavity of the box by the two vibration units. The bass enhancement speaker described in the embodiment of the present invention can improve the bandwidth of the bass without increasing the volume of the speaker box, and can also improve the volume of the bass while obtaining a deeper bass dive depth, thereby improving the effect of the bass.

Description

Technical Field

[0001] The embodiment of the present invention relates to the technical field of audio equipment, and in particular to a bass enhancement speaker. Background Art

[0002] At present, speakers with excellent bass performance are usually more popular with consumers. Speakers are generally composed of speakers and bass reflex boxes, which also include bass reflex tubes or passive radiators. The most common way to improve the bass effect of traditional speakers is to use the radiated energy on the back of the speaker with the help of bass reflex tubes or passive radiators to improve the efficiency of the bass, which has certain requirements on the volume of the bass reflex box. Portable speakers are becoming more and more popular with consumers. With the development of portable speakers, products are becoming more and more miniaturized, and the available volume of the box is also becoming smaller and smaller.

[0003] The inventor discovered during the research process of this application that the prior art has at least the following technical problems:

[0004] When using the traditional bass reflex design, the bass diving depth and radiation efficiency will be limited due to the small net volume of the box, and it is impossible to ensure that the bass diving depth and volume have good performance at the same time. There will be a problem of lack of volume when the diving depth is large, and insufficient diving depth when the volume is sufficient. Moreover, the bass cannot reproduce the original effect of the music. The loudness difference between the bass, mid-range and treble will also lead to an unbalanced listening experience in each frequency band. Summary of the invention

[0005] The technical problem to be solved by the embodiments of the present invention is to provide a bass enhancement speaker that does not require the volume of the box to be expanded, while obtaining a deeper bass dive depth and ensuring sufficient volume, thereby improving the efficiency of the bass and achieving better bass performance.

[0006] In order to solve the above technical problems, a bass enhancement speaker described in an embodiment of the present invention adopts the following technical solution:

[0007] A bass enhancement speaker box, comprising: a box body, a first speaker, a first passive radiator and a bass enhancement component;

[0008] The box body is processed with a plurality of mounting holes, and the first speaker, the first passive radiator and the bass enhancement component are all mounted in the mounting holes on the box body and connected to the cavity of the box body;

[0009] The bass enhancement component comprises a closed cavity with an adjustable volume, and two vibration units arranged at both ends of the closed cavity for passive sound emission and active sound emission respectively; the closed cavity is located in the cavity of the box, and the closed cavity is separated from the outside of the box and the cavity of the box by the two vibration units for passive sound emission and active sound emission respectively.

[0010] The bass enhancement speaker has a tighter structural design than traditional passive radiator speakers. A closed cavity with adjustable volume is added to the speaker cabinet. Without increasing the volume of the speaker cabinet, the bandwidth of the bass can be improved, and the volume of the bass can be improved while obtaining a deeper bass dive depth. The bass dive depth and volume have good performance, thereby improving the bass effect and making the bass played by the speaker have better performance.

[0011] Further, the bass enhancement speaker, the bass enhancement component includes: a second passive radiator, a coupling box and a second speaker;

[0012] The coupling box is installed in a mounting hole on the box body that matches its shape and size, and the second passive radiator and the second speaker are the two vibration units installed at both ends of the coupling box for passive sound generation and active sound generation respectively;

[0013] The second passive radiator and the second speaker are both tightly fitted to the coupling box, and the three are closed to each other to form a closed enclosed cavity; the enclosed cavity is separated from the outside of the box and the cavity of the box by the second passive radiator and the second speaker respectively.

[0014] By adjusting the size of the coupling box and adaptively adjusting the structure of the second passive radiator and the second speaker to ensure the sealing of the closed cavity, the volume of the closed cavity can be adjusted more conveniently and the vibration coupling effect between the second speaker and the second passive radiator can be affected, so that the bass enhancement speaker can better adjust the bass effect.

[0015] Furthermore, in the bass enhancement speaker, the coupling box is of a cylindrical structure; two mounting portions adapted to the shapes of the second passive radiator and the second speaker are respectively provided at both ends of the coupling box.

[0016] The structural setting of the coupling box can better install the second passive radiator and the second speaker, so that the structure of the closed cavity is tighter and the broadcasting effect of the speaker will not be affected by air leakage.

[0017] Furthermore, in the bass enhancement speaker, the front radiation surface of the second speaker faces the second passive radiator.

[0018] In this way, the sound effect of the passive vibration of the second passive radiator generated by the active vibration sound of the second speaker is more obvious.

[0019] Furthermore, in the bass enhancement speaker, the T / S parameter of the first speaker is the same as the T / S parameter of the second speaker.

[0020] This minimizes the mutual interference between the back radiation of the first speaker and the second speaker, ensuring a more balanced listening experience when the speakers are playing.

[0021] Furthermore, the bass enhancement speaker box further includes: a low-pass filter disposed in the box body; the low-pass filter is electrically connected to the second speaker.

[0022] It can be used to filter out audio signals other than bass in the audio signal, thereby preventing the middle and high frequency sounds of the second speaker from affecting the first speaker, thereby solving the problem of sound volume fluctuations and unbalanced listening in each frequency band due to phase differences between bass, mid-range and treble.

[0023] Furthermore, the bass enhancement speaker box has a box body that is an integrally formed structure.

[0024] In this way, the structure of the box can be made tighter, ensuring the sealing of the box to have a better sound insulation effect to prevent air leakage in the cavity in the box, so that the sound is only emitted to the outside through the sound-emitting structure installed on the box.

[0025] Furthermore, the bass enhancement speaker box includes a housing and a cover plate that are tightly assembled with each other;

[0026] The shell is a structure with an opening at one end, and the cover plate is attached to the opening of the shell;

[0027] The first speaker and the bass enhancement assembly are mounted on the housing, and the first passive radiator is mounted on the cover.

[0028] The box body is divided into two parts and then assembled after being processed, which can facilitate the installation and disassembly of various structural parts in the speaker.

[0029] Compared with the prior art, the embodiments of the present invention mainly have the following beneficial effects:

[0030] The embodiment of the present invention discloses a bass enhancement speaker, the bass enhancement speaker comprising: a box body, a first speaker, a first passive radiator and a bass enhancement component; the bass enhancement component has a closed cavity with an adjustable volume, and two vibration units arranged at both ends of the closed cavity for passive sound emission and active sound emission, respectively. The bass enhancement speaker described in the embodiment of the present invention can improve the bandwidth of the bass without increasing the volume of the speaker box, and can also improve the volume of the bass while obtaining a deeper bass dive depth, thereby improving the bass effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 An exploded diagram of the structure of a bass enhancement speaker in an embodiment of the present invention;

[0033] Figure 2 is a side cross-sectional view of the bass enhancement speaker described in an embodiment of the present invention;

[0034] Figure 3 It is a structural schematic diagram of the box body in one embodiment of the present invention;

[0035] Figure 4 It is a comparison diagram of the frequency response curves of the bass enhancement speaker described in the embodiment of the present invention and the traditional passive radiator speaker.

[0036] Description of Reference Numerals

[0037] 1-box, 2-first speaker, 3-first passive radiator, 5-bass enhancement component, 6-low-pass filter, 10-mounting hole, 11-shell, 12-cover, 51-second passive radiator, 52-coupling box, 53-second speaker, 54-sealed cavity. DETAILED DESCRIPTION

[0038] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the relevant drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments, and the preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0039] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0041] It should be noted that the words "upper", "lower", "upper end", "lower end", "bottom", "top end" and the like used in the following description only indicate the relative positional relationship between the components, and when flipped or rotated, this relative positional relationship may be reversed or changed. The terms "first", "second" and the like in the claims, the specification and the drawings of the specification of the present invention are used to distinguish different objects, rather than to describe a specific order.

[0042] refer to Figure 1 and Figure 2 , Figure 1 This is an exploded view of the structure of the bass enhancement speaker in an embodiment of the present invention. Figure 2The side cross-sectional view of the bass enhancement speaker in the embodiment of the present invention includes: a box body 1, a first speaker 2, a first passive radiator 3 and a bass enhancement component 5.

[0043] The box 1 is processed with three mounting holes 10, and the first speaker 2, the first passive radiator 3 and the bass enhancement component 5 are respectively mounted in the three mounting holes 10 on the box 1 and connected to the cavity of the box. One of the mounting holes 10 for mounting the first passive radiator 3 is located on the bottom surface of the box 1, referring to Figure 3 A schematic diagram of the structure of the box in one embodiment of the present invention. The bass enhancement component 5 is used to improve the bass performance of the bass enhancement speaker. In the embodiment of the present invention, the number of the first speaker 2 and the first passive radiator 3 are both preset, and can be set to one or more. When set to more than one, the number of the mounting holes 10 is also increased accordingly.

[0044] The first speaker 2, the first passive radiator 3 and the bass enhancement component 5 are all tightly fitted to the surface of the box 1 to ensure that there is no air leakage in the cavity of the box 1. The position of the bass enhancement component 5 on the box 1 is arbitrarily set. The structures of the main parts of the first speaker 2 and the bass enhancement component 5 are both located in the cavity of the box 1, and only the structure of the top part is flush with or slightly exceeds the surface of the box 1. In this way, the bass performance of the bass enhancement speaker can be improved by the bass enhancement component 5 without increasing the volume of the box 1 and ensuring a small net volume speaker design.

[0045] In one embodiment of the present invention, the structure of the box body 1 is made of an integral molding, so that the structure of the box body can be made tighter, and the sealing of the box body 1 can be ensured to have a better sound insulation effect, so as to prevent the cavity in the box body 1 from leaking, so that the sound is only emitted to the outside through the structure for emitting sound installed on the box body 1.

[0046] In another embodiment of the present invention, further referring to Figure 3 It is a schematic diagram of the structure of the box. The box 1 includes: a shell 11 and a cover 12 that are tightly assembled with each other, the shell 11 is a structure with one end open, and the cover 12 is attached to the opening of the shell 11 to cover the opening tightly and seal it. The first speaker 2 and the bass enhancement component 5 are installed on the shell 11, and the first passive radiator 3 is installed on the cover 12. The box 1 is divided into two parts, the shell 11 and the cover 12, and then assembled after processing, which can facilitate the installation and disassembly of the various parts of the structure in the speaker. Of course, in other embodiments, the box 1 can also be divided into more than two parts for processing and assembly.

[0047] Further references Figure 2 The bass enhancement component 5 has a closed cavity 54 with an adjustable volume, and two vibration units 51 and 53 arranged at both ends of the closed cavity 54 for passive sound generation and active sound generation, respectively. The closed cavity 54 is located in the cavity of the box 1, and the closed cavity 54 is separated from the outside of the box 1 and the cavity of the box 1 by the two vibration units 51 and 53 for passive sound generation and active sound generation, respectively. That is, the closed cavity 54 is separated from the outside of the box 1 by the vibration unit for passive sound generation, and the closed cavity 54 is separated from the cavity of the box 1 by the vibration unit for active sound generation.

[0048] In the embodiment of the present invention, the bass enhancement component 5 includes: a second passive radiator 51, a coupling box 52 and a second speaker 53. The second passive radiator 51 is used as the above-mentioned passive sound vibration unit 51, and the second speaker 53 is used as the above-mentioned active sound vibration unit 53.

[0049] The coupling box 52 is a cylindrical structure, installed in a mounting hole 10 on the box body 1 that matches its shape and size, and the upper surface of the coupling box 52 is level with or higher than the box body 1. Two mounting parts that match the shapes of the second passive radiator 51 and the second speaker 53 are respectively provided at both ends of the coupling box 52, and the second passive radiator 51 and the second speaker 53 are respectively installed on the two mounting parts to ensure that the coupling box 52 is tightly installed with the second passive radiator 51 and the second speaker 53. The structural setting of the coupling box 52 can better install the second passive radiator 51 and the second speaker 53, so that the structure of the closed cavity 54 is tighter, and the broadcasting effect of the bass enhancement speaker will not be affected by air leakage.

[0050] The coupling box 52 fits tightly with the box body 1 to ensure that the cavity of the box body 1 does not leak air to the outside at the installation position of the bass enhancement component 5. The second passive radiator 51 and the second speaker 53 fit tightly with the coupling box 52, and the three are closed to each other to form the closed closed cavity 54. The closed cavity 54 is separated from the outside of the box body 1 and the cavity of the box body 1 by the second passive radiator 51 and the second speaker 53, respectively. In this way, it is ensured that the closed cavity 54 does not leak air to the outside of the box body 1.

[0051] In the implementation of the embodiment of the present invention, the front radiation surface of the second speaker 53 faces the second passive radiator 51. The second speaker 53 transmits vibration to the air in the closed cavity 54 by emitting sound from the front, and then transmits vibration to the second passive radiator 51 through the vibration of the air. The front of the second speaker 53 faces the second passive radiator 51, so that the vibration when it emits sound can be better transmitted to the second passive radiator 51. Among them, the coupling box 52 also has the function of transmitting the vibration of the second speaker 53 to the second passive radiator 51, but the transmission of its vibration has no effect on the sound effect of the low-frequency sound.

[0052] The sound of the second passive radiator 51 as a passive unit is driven by the vibration of the second speaker 53. Specifically, after the second speaker 53 is powered on, it actively produces sound through the vibration of its sound-raising end, and drives the air in the closed cavity 54 to vibrate, and the air in the closed cavity 54 transmits the vibration, thereby causing the passive vibration of the second passive radiator 51, and finally causing the second passive radiator 51 to produce sound. In this way, the coupling of vibrations between different physical fields is achieved.

[0053] The sound produced by the first passive radiator 3 as a passive unit is jointly driven by the vibration when the first speaker 2 and the second speaker 53 produce sound. Specifically, after the first speaker 2 and the second speaker 53 are powered on, when the speaker end vibrates to produce active sound, the vibration of the speaker end will be transmitted from the back of the speaker end to the air in the box 1, thereby driving the air in the box 1 to vibrate, and the transmission of vibration by the air in the box 1 causes the passive vibration of the first passive radiator 3, and finally makes the first passive radiator 3 produce sound.

[0054] In the bass enhancement component 5, the volume of the enclosed cavity 54 depends on the installation structure between the second passive radiator 51, the coupling box 52 and the second speaker 53. By changing the size of the coupling box 52, and the size or spacing between the second passive radiator 51 and the second speaker 53 installed therewith, the volume of the enclosed cavity 54 can be adjusted more conveniently, thereby adjusting the bandwidth of the bass boost frequency of the bass enhancement speaker. When the volume of the enclosed cavity 54 increases, the bandwidth of the bass that can be provided by the bass enhancement speaker increases accordingly. When the volume of the enclosed cavity 54 decreases, the bandwidth of the bass that can be provided by the bass enhancement speaker also decreases accordingly. Generally speaking, when other parameters of the bass in the bass enhancement speaker are the same, the higher the bass bandwidth of the bass enhancement speaker, the better the performance of the speaker.

[0055] The volume of a sound refers to the size of the sound emitted at each frequency. The volume can be expressed in terms of sound pressure level, measured in decibels (DB). The volume of a sound expressed by the sound pressure level is actually a quantity derived from the characteristics of the human ear's response to changes in sound intensity. The higher the sound pressure level, the greater the volume; the lower the sound pressure level, the smaller the volume.

[0056] In the embodiment of the present invention, the concept of the sense of volume only refers to the sense of volume of the speaker emitted by the bass enhancement speaker. The sense of volume of the bass emitted by the bass enhancement speaker can be adjusted by adjusting the structure of the second passive radiator 51 in the bass enhancement component 5. When the area of ​​the second passive radiator 51 increases or the weight decreases, the sense of volume characteristic of the bass can be improved, that is, the sound pressure level increases; when the area of ​​the second passive radiator 51 decreases or the weight increases, the sense of volume characteristic of the bass will be weakened, that is, the sound pressure level decreases. By setting the structure of the second passive radiator 51, it is possible to reduce the weight of the second passive radiator 51 while increasing its area, or to increase its weight while reducing its area. Generally speaking, when other parameters of the bass in the bass enhancement speaker are the same, the higher the sense of volume of the bass, the better the performance of the speaker.

[0057] Moreover, the volume characteristics of the speaker are generally represented by its frequency response curve. In the frequency response curve, the horizontal axis is represented by the frequency value, and the vertical axis is represented by the sound pressure level value. Frequency response refers to the phenomenon that when an audio signal output at a constant voltage is connected to the system, the sound pressure generated by the speaker increases or decreases with the change of frequency, and the phase changes with the frequency. That is, the change relationship between the sound pressure and phase and the frequency is called the frequency response. The frequency response range, also known as the frequency response range, also called the frequency characteristic, refers to the frequency range that the speaker can reproduce when reproducing the audio signal under the rated power state and within the specified amplitude variation range within the amplitude allowable range, as well as the signal change amount within this range, the unit is Hertz (HZ). In other words, the frequency response range refers to the range between the lowest effective sound frequency and the highest effective sound frequency of the speaker.

[0058] In the embodiment of the present invention, the low-frequency cutoff frequency of the speaker can be lowered by adjusting the first passive radiator 3, thereby expanding the bass bandwidth range of the bass enhancement speaker. By adjusting the volume of the closed cavity 54, the bandwidth range of the bass of the bass enhancement speaker can be expanded or reduced, and by adjusting the size and weight of the second passive radiator 51, the volume of the sound of the bass enhancement speaker within this bass bandwidth range can be increased.

[0059] By setting the compliance of the first passive radiator 3, the diving depth of the bass of the bass enhancement speaker can be changed. The compliance is also called rigidity, which generally refers to the ability of a material not to deform under the action of an external force. Here, it can be understood as the deformation of the passive radiator under unit force. The diving depth of the bass refers to the low-frequency cutoff frequency of the sound that can be emitted by the speaker, that is, the lowest effective sound frequency in the above-mentioned frequency response range. The greater the compliance of the first passive radiator 3, the deeper the diving depth of the bass enhancement speaker, that is, the lower the low-frequency cutoff frequency of the bass that can be emitted; the smaller the compliance of the first passive radiator 3, the shallower the diving depth of the bass enhancement speaker, that is, the higher the low-frequency cutoff frequency of the bass that can be emitted. Generally speaking, when other parameters of the bass in the bass enhancement speaker are the same, the deeper the diving depth of the bass, the better the performance of the speaker.

[0060] In the embodiment of the present invention, the first speaker 2 and the second speaker 53 can use speakers with the same specifications. However, when the specifications of the first speaker 2 and the second speaker 53 are different, it is necessary to ensure that the T / S parameters (Thiele / Small parameters) of the first speaker are the same as the T / S parameters of the second speaker. The T / S parameters include small signal parameters and large signal parameters. The small signal parameters and the large signal parameters are both related parameters that represent the performance of the speaker, and are related to and affect the structural design of the speaker. The first speaker 2 and the second speaker 53 use the same T / S parameters, which can minimize the mutual interference of the back radiation of the first speaker 2 and the second speaker 53, thereby ensuring a more balanced listening experience when the bass enhancement speaker is playing.

[0061] Further references Figure 1 and Figure 2 The bass enhancement speaker box further includes: a low-pass filter 6 disposed in the box body 1. The low-pass filter 6 is electrically connected to the second speaker 53. The low-pass filter 6 only allows signals below its cut-off frequency to pass through, and can be used to filter out audio signals other than bass in the audio signal, thereby preventing the middle and high frequency sounds of the second speaker 53 from affecting the first speaker 2, thereby solving the problem of sound volume fluctuation and unbalanced listening in each frequency band due to the phase difference between the bass, middle and high tones.

[0062] Further references Figure 4, a frequency response curve comparison diagram of the bass enhancement speaker in the embodiment of the present invention and the traditional passive radiator speaker. In the frequency response curve comparison diagram, the horizontal axis represents the frequency value, the unit is Hertz (HZ); the vertical axis represents the sound pressure level value, the unit is decibel (DB). And the curve portion represented by the solid line in the frequency response curve comparison diagram represents the frequency response curve of the bass enhancement speaker in the embodiment of the present invention, and the curve portion represented by the dotted line represents the frequency response curve of the traditional passive radiator speaker. The dotted line A represents the average sound pressure level in the industry definition, and the dotted line B represents the curve after the average sound pressure level is reduced by 10 decibels.

[0063] Observe the data in the frequency response curve comparison diagram, the dotted line B has an intersection with the curve represented by the solid line and the curve represented by the dotted line in the diagram, and the intersection is the low-frequency cutoff frequency defined in the industry, that is, the lowest effective sound frequency that can be provided by the bass enhancement speaker in the embodiment of the present invention and the traditional passive radiator speaker compared thereto, that is, the diving depth of the bass.

[0064] As can be seen from the figure, the bass dive depth of the bass enhancement speaker represented by the solid line is deeper than the bass dive depth of the traditional passive radiator speaker represented by the dotted line. The bass dive depth of the bass enhancement speaker is deeper, and when the upper frequency limit of the bass that can be provided by the bass enhancement speaker and the traditional passive radiator speaker is the same, it means that the bandwidth of the bass that can be played by the bass enhancement speaker is wider, which means that its frequency response range is larger.

[0065] Moreover, in the frequency response curve comparison diagram, the curve corresponding to the solid line in the first half of the horizontal axis is always above the curve of the dotted line until the second half coincides with the curve of the dotted line. The above-mentioned curve changes of the solid line and the dotted line are located in the frequency range of bass and mid-bass. In the curve changes in the first half of the frequency response curve comparison diagram, when the values ​​corresponding to the horizontal axes of the solid line and the dotted line are the same, the values ​​corresponding to the vertical axes in the solid line are higher than the values ​​corresponding to the vertical axes in the dotted line; it means that when the sound, especially the bass, provided by the bass enhancement speaker and the traditional passive radiator speaker have the same frequency, the bass provided by the bass enhancement speaker has a higher sound pressure level than the bass provided by the traditional passive radiator speaker, that is, the volume is greater. Moreover, compared with traditional passive radiator speakers, the bass enhancement speaker can not only provide more sufficient bass, but also significantly improve the volume in the mid-bass range.

[0066] The frequency range of human hearing is approximately from 20Hz for the lowest sound to 20,000Hz for the highest sound. In the field of speakers, in order to further explain the bass, the low frequency band is often further divided, and the lowest two octaves are called sub-bass and heavy bass respectively. The frequency band of sub-bass is 20-40Hz, and the frequency band of heavy bass is 40-80Hz. Sub-bass and heavy bass are collectively called super-heavy bass, and their frequency band is 20-80Hz. Sub-bass plays an important role in creating the realism and strength of music. When the sub-bass effect is good, the speaker can play music better. Therefore, when the bass enhancement speaker can provide a deeper bass dive depth and more sufficient volume, the bass enhancement speaker can better reproduce the original effect of the music.

[0067] The bass enhancement speaker described in the embodiment of the present invention has a tighter structural design than the traditional passive radiator speaker. A closed cavity with adjustable volume is added to the speaker box. Without increasing the volume of the speaker box, the bandwidth of the bass can be improved, and the volume of the bass can be improved while obtaining a deeper bass dive depth, so that the bass dive depth and volume have good performance. It can also solve the problem of unbalanced listening experience in each frequency band between bass, mid-range and treble, and provide a better super bass effect, so that the speaker can reproduce the bass better, improve the efficiency and effect of the bass, and make the bass have better performance.

[0068] In the above embodiments provided by the present invention, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of the modules is only a logical function division, and there may be other division methods in actual implementation, for example, multiple modules or components can be combined or integrated into another system, or some features can be ignored or not executed.

[0069] The present invention is not limited to the above-mentioned embodiments. The above-mentioned are preferred embodiments of the present invention. The embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, they can still make some improvements and modifications to the technical solutions recorded in the above-mentioned specific embodiments, or make equivalent replacements for some of the technical features therein. Any equivalent structure made by using the contents of the present invention specification and drawings, directly or indirectly used in other related technical fields, should be regarded as included in the protection scope of the present invention.

Claims

1. A bass enhancement speaker, characterized in that: include: a cabinet, a first speaker, a first passive radiator, and a bass enhancement component; The box body is processed with a plurality of mounting holes, and the first speaker, the first passive radiator and the bass enhancement component are all mounted in the mounting holes on the box body and connected to the cavity of the box body; The bass enhancement component comprises a closed cavity with adjustable volume, and two vibration units arranged at both ends of the closed cavity for passive sound generation and active sound generation respectively; the closed cavity is located in the cavity of the box, and the closed cavity is separated from the outside of the box and the cavity of the box by the two vibration units for passive sound generation and active sound generation respectively; The bass enhancement component includes: a second passive radiator, a coupling box and a second speaker, and the coupling box is tightly fitted with the box body.

2. The bass enhancement speaker according to claim 1, characterized in that: The coupling box is installed in a mounting hole on the box body that matches its shape and size, and the second passive radiator and the second speaker are the two vibration units installed at both ends of the coupling box for passive sound generation and active sound generation respectively; The second passive radiator and the second speaker are both tightly fitted to the coupling box, and the three are closed to each other to form a closed enclosed cavity; the enclosed cavity is separated from the outside of the box and the cavity of the box by the second passive radiator and the second speaker respectively.

3. The bass enhancement speaker according to claim 2, characterized in that: The coupling box is in a cylindrical structure; two mounting parts matching the shapes of the second passive radiator and the second speaker are respectively provided at two ends of the coupling box.

4. The bass enhancement speaker according to claim 2, characterized in that: The front radiation surface of the second speaker faces the second passive radiator.

5. The bass enhancement speaker according to claim 2, characterized in that: The T / S parameter of the first speaker is the same as the T / S parameter of the second speaker.

6. The bass enhancement speaker according to claim 2, characterized in that: Also includes: A low-pass filter disposed in the box; The low-pass filter is electrically connected to the second speaker.

7. The bass enhancement speaker according to claim 1, characterized in that: The box body is an integrally formed structure.

8. The bass enhancement speaker according to claim 1, characterized in that: The box body comprises: a shell and a cover plate which are tightly assembled with each other; The shell is a structure with an opening at one end, and the cover plate is attached to the opening of the shell; The first speaker and the bass enhancement assembly are mounted on the housing, and the first passive radiator is mounted on the cover.

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