Sound output assembly and electronic equipment

Abstract

The invention provides a sound output assembly and electronic equipment, the sound output assembly comprises a first sound output cavity, a sound output channel and a second sound output cavity, the sound output channel is communicated with the first sound output cavity, and the first sound output cavity is closer to a sound source than the sound output channel; the second sound output cavity is communicated with the first sound output cavity through a first channel, and the width of the first channel is smaller than the width of the first sound output cavity and the width of the second sound output cavity; according to the invention, the second sound output cavity is communicated with the first sound output cavity, and the second sound output cavity can inhibit the resonance wave crest of sound between the first sound output cavity and the sound output channel, thereby facilitating the improvement of the quality of the output audio.

Description

Technical Field

[0001] The present application belongs to the technical field of loudspeakers, and in particular, relates to a sound output component and an electronic device. Background Art

[0002] With the widespread use of portable electronic devices, speakers are an important component of audio output, and their performance directly affects the user's listening experience. Traditional speaker designs usually use the movement of coils and diaphragms to achieve sound reproduction through ampere force.

[0003] In the related art, the speaker emits sound along the front cavity and the sound outlet. However, a resonance effect is formed between the sound outlet and the front cavity, causing peaks and valleys in the frequency response curve at certain frequency points, which in turn affects the quality of the audio.

[0004] Therefore, how to improve the quality of output audio is a problem that technicians in this field currently need to solve. Summary of the invention

[0005] The purpose of this application is to provide a sound output component and an electronic device, aiming to solve the problem of low audio quality in the current sound output.

[0006] A first aspect of an embodiment of the present application provides a sound output component, including:

[0007] The first sound cavity;

[0008] A sound outlet channel, the sound outlet channel is connected to the first sound outlet cavity, and the first sound outlet cavity is arranged closer to the sound source than the sound outlet channel;

[0009] The second sound-emitting cavity is connected to the first sound-emitting cavity through a first channel, and a width of the first channel is smaller than a width of the first sound-emitting cavity and a width of the second sound-emitting cavity.

[0010] In this way, the second sound outlet cavity is connected to the first sound outlet cavity, and the second sound outlet cavity can suppress the resonance peak of the sound between the first sound outlet cavity and the sound outlet channel, which is beneficial to improving the quality of the sound output audio.

[0011] In some embodiments of the present application, the sound output component further includes a third sound output cavity, and the third sound output cavity is connected to the second sound output cavity through a second channel;

[0012] And / or, the third sound output cavity is connected to the first sound output cavity.

[0013] In some embodiments of the present application, the second sound output cavity is arranged on a side of the first sound output cavity away from the sound output channel.

[0014] In some embodiments of the present application, the third sound output cavity is disposed on a side of the first sound output cavity away from the sound output channel, and the third sound output cavity is disposed close to the second sound output cavity.

[0015] In some embodiments of the present application, the space inside the second sound-emitting cavity is smaller than the space inside the first sound-emitting cavity.

[0016] In some embodiments of the present application, the inner space of the third sound-emitting cavity is smaller than the inner space of the second sound-emitting cavity.

[0017] In some embodiments of the present application, the first channel has a corner.

[0018] In some embodiments of the present application, the width of the second channel is smaller than the width of the first sound output cavity and the width of the second sound output cavity.

[0019] In some embodiments of the present application, the width of the second channel is the same as the width of the first channel.

[0020] In some embodiments of the present application, there are multiple sound output channels, and the multiple sound output channels are arranged side by side.

[0021] In a second aspect, the present application also provides an electronic device, comprising the above-mentioned sound output component.

[0022] In some embodiments of the present application, the electronic device includes a first shell, a second shell and a sound source component, the first shell and the second shell are combined to form a accommodating cavity, the sound source component is arranged in the accommodating cavity, and the first shell is provided with the first sound output cavity, the second sound output cavity, the sound output channel and the third sound output cavity.

[0023] The beneficial effects of the embodiments of the present invention compared with the prior art are as follows: the above-mentioned sound output component and electronic device, the sound output component includes a first sound output cavity, a sound output channel and a second sound output cavity, the sound output channel is connected to the first sound output cavity, and the first sound output cavity is arranged closer to the sound source than the sound output channel; the second sound output cavity is connected to the first sound output cavity through a first channel, and the width of the first channel is smaller than the width of the first sound output cavity and the width of the second sound output cavity; the second sound output cavity in the present application is connected to the first sound output cavity, and the resonant peak of the sound between the first sound output cavity and the sound output channel can be suppressed by the second sound output cavity, which is beneficial to improving the quality of the sound output audio. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the structure of a sound output component provided in one embodiment of the present application;

[0025] Figure 2 An embodiment of the present application provides Figure 1 Schematic diagram of the local A enlarged structure;

[0026] Figure 3 A schematic diagram of the structure of an electronic device provided in one embodiment of the present application;

[0027] Figure 4 An analog structure diagram of a sound-emitting component provided by the related technology of this application;

[0028] Figure 5 An analog structure diagram of a sound output component provided in one embodiment of the present application;

[0029] Figure 6 A schematic diagram of a frequency response curve provided in an embodiment of the present application.

[0030] Description of specific element symbols: 100-first sound output cavity, 200-first channel, 210-corner, 300-second sound output cavity, 400-sound output channel, 500-third sound output cavity, 600-second channel, 1000-first shell, 2000-second shell, 3000-middle frame. DETAILED DESCRIPTION

[0031] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0032] It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0033] It should be understood that the terms "length", "width", "up", "down", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0035] It is important to know that with the widespread use of portable electronic devices, sound playback technology is particularly important in product design. As an important component of audio output, the performance of the speaker directly affects the user's listening experience. Traditional speaker design usually uses the movement of the coil and diaphragm to achieve sound playback through Ampere force. However, in the low-frequency range, due to the weak directivity of the sound waves, the sound waves emitted from the front and back of the diaphragm may diffract and cancel each other, resulting in insufficient low-frequency effects. This problem has prompted the development of closed-box design, especially adding a box behind the speaker to enhance the low-frequency effect.

[0036] However, in the design of portable devices such as mobile phones and tablets, the sound structure faces many limitations. The design of these devices often requires the thickness of the speaker module to be as thin as possible to facilitate the overall thinness of the body. At the same time, the design of the sound hole is also limited and usually cannot be opened on the front because it will be blocked by the screen. Therefore, many manufacturers place the sound hole on the side of the speaker module. Although this design has certain practicality, it also causes a series of new sound quality problems.

[0037] The design of the side sound outlet creates a resonance effect between the front cavity of the speaker module and the relatively narrow and long sound outlet, resulting in peaks and valleys in the frequency response curve at certain frequency points, insufficient flatness of the frequency response curve, and rapid attenuation of high frequencies. These negative effects not only affect the quality of the audio, but also limit the sound reproduction ability of portable devices, affecting the overall user experience.

[0038] Therefore, the present application improves the relevant sound output components and electronic devices based on this.

[0039] See also Figure 1 , Figure 1 The structure diagram of the sound output assembly provided in the present embodiment is shown. The sound output assembly of the present embodiment includes a first sound output cavity 100, a sound output channel 400 and a second sound output cavity 300. The sound output channel 400 is connected to the first sound output cavity 100, and the first sound output cavity 100 is arranged closer to the sound source than the sound output channel 400. The second sound output cavity 300 is connected to the first sound output cavity 100 through the first channel 200, and the width of the first channel 200 is smaller than the width of the first sound output cavity 100 and the width of the second sound output cavity 300.

[0040] It should be explained that the first sound-emitting cavity 100 is the cavity from which the sound is first propagated from the sound source. Compared with other parts, it is arranged closer to the sound source, and therefore is the starting point of the sound propagation path. Exemplarily, the sound source component can be placed directly in the first sound-emitting cavity 100. The sound outlet channel 400 is a channel connecting the first sound-emitting cavity 100 with the external environment or other cavities. Its main function is to guide the sound to propagate outward from the first sound-emitting cavity 100, or to direct the sound to other parts in the component. Exemplarily, the sound outlet channel 400 is a sound outlet hole on a mobile phone, a speaker, and other devices. The second sound-emitting cavity 300 is another cavity connected to the first sound-emitting cavity 100, and the sound can be propagated from the first sound-emitting cavity 100 to the second sound-emitting cavity 300 or the sound outlet channel 400. The first channel 200 is a narrow channel connecting the first sound-emitting cavity 100 and the second sound-emitting cavity 300.

[0041] It can be understood that the sound can be divided into a first sound branch and a second sound branch in the first sound cavity 100, the first sound branch emits sound along the sound channel 400, and the second sound branch propagates to the second sound cavity 300 through the first channel 200. The sound forms resonance in the first sound cavity 100 and the sound channel 400, and at the resonance frequency, all the sound energy is doing work instead of being stored by the energy storage element, so the sound pressure level at this time is higher than that in other frequency bands.

[0042] In the related art, due to the above-mentioned resonance phenomenon, peaks and valleys will appear on certain frequency points on the frequency response curve, the frequency response curve will not be flat enough, the high frequency will decay faster and other negative effects will occur. However, in the present application, the second sound output cavity 300 can suppress the resonance peak of the sound between the first sound output cavity 100 and the sound output channel 400, which is beneficial to improve the quality of the sound output audio.

[0043] Specifically, the sound can be diverted from the first sound-emitting cavity 100 to the sound-emitting channel 400 and the second sound-emitting cavity 300. This diversion effect reduces the sound wave energy released directly through the sound-emitting channel 400, thereby reducing the sound pressure level at the resonant frequency. And after the introduction of the second sound-emitting cavity 300, the resonant structure of the entire system becomes more complex. The newly added cavity can serve as an additional energy storage element to absorb or store part of the sound wave energy, thereby reducing the energy accumulation at the original resonant frequency. In addition, the new cavity may also introduce new resonant frequencies, which may interfere with or offset the original resonant frequency, further reducing the sound pressure level at the original resonant frequency. Furthermore, by carefully designing the size, shape, and connection method of the second sound-emitting cavity 300 with the first sound-emitting cavity 100 and the sound-emitting channel 400, the frequency response characteristics of the entire system can be adjusted, which is conducive to more effective dispersion or absorption of sound wave energy at certain specific frequencies (such as the original resonant frequency), thereby suppressing the increase in sound pressure levels at these frequencies.

[0044] In some embodiments of this application, please continue to refer to Figure 1 The sound output assembly of this embodiment further includes a third sound output cavity 500, which is connected to the second sound output cavity 300 through a second channel 600. That is, the third sound output cavity 500 and the second sound output cavity 300 are in series compared to the first sound output cavity 100.

[0045] It should be explained that the third sound-emitting cavity 500 may not be connected to the first sound-emitting cavity 100, and the sound entering the second sound-emitting cavity 300 may continue to enter the third sound-emitting cavity 500. The third sound-emitting cavity 500 optimizes the suppression of the resonance peak of the sound between the first sound-emitting cavity 100 and the sound channel 400, thereby helping to improve the sound quality of the sound channel 400. The second channel 600 is similar to the first channel 200, and the width of the second channel 600 can also be designed to be smaller than the width of the adjacent cavity to provide additional sound damping. This design helps to reduce the reflection and interference of sound between different cavities and reduce the impact of the resonance peak. At the same time, by adjusting the width and length of the second channel 600, the transmission speed and attenuation characteristics of the sound can be further controlled, thereby achieving fine control of the sound output.

[0046] In some embodiments, the third sound-emitting cavity 500 is connected to the first sound-emitting cavity 100. That is, the third sound-emitting cavity 500 and the second sound-emitting cavity 300 are in parallel structures compared to the first sound-emitting cavity 100.

[0047] In some embodiments of this application, please continue to refer to Figure 1 In this embodiment, the second sound output cavity 300 is arranged on a side of the first sound output cavity 100 away from the sound output channel 400 .

[0048] It is understandable that by placing the second sound-emitting cavity 300 on the indirect path of the first sound-emitting cavity 100 (i.e., on the side away from the sound-emitting channel 400), the direct acoustic interference between the two cavities can be effectively reduced. This layout helps to reduce the possibility that the sound in the first sound-emitting cavity 100 is directly transmitted to the second sound-emitting cavity 300 and causes unnecessary resonance, thereby maintaining the clarity and purity of the sound.

[0049] In some embodiments of this application, please continue to refer to Figure 1 In this embodiment, the third sound output cavity 500 is disposed on a side of the first sound output cavity 100 away from the sound output channel 400 , and the third sound output cavity 500 is disposed close to the second sound output cavity 300 .

[0050] It is understandable that placing the third sound cavity 500 close to the second sound cavity 300 can promote acoustic coupling and interaction between the two. This interaction can produce complex acoustic effects, such as resonance, interference, etc., thereby providing more possibilities and flexibility for sound processing.

[0051] In some embodiments, the third sound emitting cavity 500 and the second sound emitting cavity 300 are arranged side by side.

[0052] In some embodiments of this application, please continue to refer to Figure 1 In this embodiment, the space inside the second sound cavity 300 is smaller than the space inside the first sound cavity 100 .

[0053] It is understandable that in an acoustic system, cavities of different sizes will produce different acoustic impedances. By designing the intracavity space of the second sound-emitting cavity 300 to be smaller than that of the first sound-emitting cavity 100, acoustic impedance matching between the two can be achieved. This matching helps to reduce the reflection and scattering of sound during transmission, thereby improving the transmission efficiency and clarity of sound. In addition, larger cavities are prone to resonance effects at specific frequencies, which may cause sound distortion and deterioration in sound quality. By designing the space of the second sound-emitting cavity 300 to be smaller, the probability of this resonance effect can be reduced, thereby maintaining the clarity and stability of the sound.

[0054] In some embodiments of this application, please continue to refer to Figure 1 In this embodiment, the inner space of the third sound cavity 500 is smaller than the inner space of the second sound cavity 300 .

[0055] It is understandable that by gradually reducing the space inside the second sound cavity 300 and the third sound cavity 500, a hierarchical design of acoustic characteristics can be achieved. The resonant waves can be more finely suppressed in different frequency ranges, thereby optimizing the overall sound quality. For example, a smaller third sound cavity 500 may have a stronger attenuation effect on high-frequency sounds, while a larger second sound cavity 300 may have a better response to low-frequency or mid-frequency sounds.

[0056] In some embodiments of this application, please refer to Figure 2 , Figure 2 This embodiment provides Figure 1 FIG. 2 is a schematic diagram of a partial enlarged structure of FIG. 2 , in which the first channel 200 of the embodiment has a corner 210 .

[0057] It is understandable that the design of corner 210 will change the propagation path and speed of sound in the channel, thereby affecting the acoustic characteristics. Specifically, corner 210 may increase the reflection and scattering of sound, resulting in sound attenuation and changes in frequency response. In addition, the design of corner 210 increases the complexity of sound transmission between the first sound cavity 100 and the second sound cavity 300. This complexity helps to reduce the monotony and predictability of the sound, thereby improving the dynamic range and detail expression of the sound. At the same time, corner 210 can also act as a "filter" for the sound path, optimizing the frequency response of the sound by changing the propagation path of the sound.

[0058] In some embodiments of this application, please continue to refer to Figure 1 In this embodiment, the width of the second channel 600 is smaller than the width of the first sound cavity 100 and the width of the second sound cavity 300 .

[0059] It is understandable that the narrower second channel 600 increases the damping of the sound during transmission, thereby slowing down the propagation speed of the sound and increasing the attenuation. This damping effect helps to reduce the direct reflection and interference of the sound between different cavities, which is conducive to strengthening the suppression of the resonance peak.

[0060] In some embodiments of this application, please continue to refer to Figure 1 , the width of the second channel 600 of this embodiment is the same as the width of the first channel 200 .

[0061] In some embodiments of this application, please continue to refer to Figure 1 In this embodiment, there are multiple sound output channels 400, and the multiple sound output channels 400 are arranged side by side.

[0062] Furthermore, in order to better implement the sound output component in any of the above embodiments, based on the above sound output component, the present application also provides an electronic device, including the above sound output component.

[0063] In some embodiments of this application, please continue to refer to Figure 1 Also see Figure 3 , Figure 3 The electronic device of this embodiment includes a first housing 1000, a second housing 2000 and a sound source assembly, wherein the first housing 1000 and the second housing 2000 are enclosed to form a receiving cavity, the sound source assembly is disposed in the receiving cavity, and the first housing 1000 is provided with a first sound-emitting cavity 100, a second sound-emitting cavity 300, a sound-emitting channel 400 and a third sound-emitting cavity 500.

[0064] In some embodiments, the electronic device may be a portable electronic device such as a mobile phone or a tablet.

[0065] In some embodiments of this application, please refer to Figure 1 and Figure 3 , this embodiment takes a speaker as an example; it should be known that the speaker is driven by the Ampere force through the coil to drive the entire vibration system to reciprocate to achieve the purpose of reproducing sound. Since sound waves have weaker directivity at lower frequencies, the sound waves in front and behind the diaphragm will diffract and cancel each other, resulting in poor low-frequency effects. Therefore, a closed box with a box behind the speaker has gradually developed. Various portable devices such as mobile phones and tablets have limited sound output structures, the speaker module needs to be thinner, and the sound hole cannot be opened on the front (otherwise it will be blocked by the screen). For these reasons, manufacturers open the sound hole on the side of the speaker module (i.e., on the side of the speaker diaphragm). This structural design causes the front cavity of the speaker module and the relatively narrow and long sound hole to form a resonance, resulting in peaks and valleys at certain frequencies on the frequency response curve, insufficient flatness of the frequency response curve, and rapid attenuation of high frequencies and other negative effects.

[0066] In the case where only the first sound cavity 100 and the sound channel 400 are provided, please refer to Figure 4 , Figure 4 The analog structure diagram of the sound-emitting component provided by the related technology is shown; after the sound wave is emitted from the speaker diaphragm, in the impedance-type electric sound analogy, the first sound-emitting cavity 100 can be analogized to a capacitor, and the sound-emitting channel 400 can be analogized to an inductor and a resistor in series. One branch of the sound streamline flows to the capacitor and is grounded, and the other branch flows to the inductor / resistor and is grounded. At this time, the first sound-emitting cavity 100 and the sound-emitting channel 400 form an RLC parallel resonance, and the resonant frequency is At the resonant frequency, all sound energy is doing work instead of being stored in the energy storage element, so the sound pressure level is higher than in other frequency bands.

[0067] See also Figure 5 , Figure 5 An analog structure diagram of the sound-emitting component provided in the present embodiment is shown; in the present embodiment, in order to eliminate the peaks and valleys of the frequency response curve caused by such resonance, a specific resonant structure is arranged on the other side of the first sound-emitting cavity 100 opposite to the sound outlet channel 400, so that the sound pressure generated by the diaphragm at the resonant frequency generates a third branch flow to the second sound-emitting cavity 300 and the third sound-emitting cavity 500 to continue to resonate and consume / store part of the sound energy, so as to suppress the peak caused by the resonance of the traditional side sound-emitting module.

[0068] In some embodiments, the electronic device further includes a middle frame 3000 , which is disposed between the first shell 1000 and the second shell 2000 and is used for speaker assembly and coupling with the front and rear shells (the first shell 1000 and the second shell 2000 ).

[0069] Please note that Figure 6 , Figure 6 FIG. 4 shows a schematic diagram of a frequency response curve provided by this embodiment. Figure 6 The solid line curve is the frequency response curve in the related art, and the dotted line curve is the frequency response curve of the electronic device of the present application. As can be seen from the figure, the solid line curve has an extremely high resonance peak at 3kHz, and the sound pressure level is about 10dB higher than that at 1kHz. Such a resonance peak will cause coloration when the sound is reproduced. The dotted line curve can be seen to effectively eliminate the resonance peak at 3kHz.

[0070] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0071] The basic concepts have been described above. Obviously, for those skilled in the art, the above detailed disclosure is only for example and does not constitute a limitation of the present application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements and amendments to the present application. Such modifications, improvements and amendments are suggested in the present application, so such modifications, improvements and amendments still belong to the spirit and scope of the exemplary embodiments of the present application.

[0072] At the same time, the present application uses specific words to describe the embodiments of the present application. For example, "one embodiment", "an embodiment", and / or "some embodiments" refer to a certain feature, structure or characteristic related to at least one embodiment of the present application. Therefore, it should be emphasized and noted that "one embodiment" or "an embodiment" or "an alternative embodiment" mentioned twice or more in different positions in this specification does not necessarily refer to the same embodiment. In addition, some features, structures or characteristics in one or more embodiments of the present application can be appropriately combined.

[0073] Similarly, it should be noted that in order to simplify the description of the disclosure of this application and thus help understand one or more embodiments of the invention, in the above description of the embodiments of this application, multiple features are sometimes combined into one embodiment, figure or description thereof. However, this disclosure method does not mean that the features required by the object of this application are more than the features mentioned in the claims. In fact, the features of the embodiments are less than all the features of the single embodiment disclosed above.

[0074] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A sound output component, characterized in that: include: The first sound cavity; A sound outlet channel, the sound outlet channel is connected to the first sound outlet cavity, and the first sound outlet cavity is arranged closer to the sound source than the sound outlet channel; The second sound-emitting cavity is connected to the first sound-emitting cavity through a first channel, and a width of the first channel is smaller than a width of the first sound-emitting cavity and a width of the second sound-emitting cavity.

2. The sound output component according to claim 1, characterized in that: The sound output component further includes a third sound output cavity, and the third sound output cavity is connected with the second sound output cavity through a second channel; And / or, the third sound output cavity is connected to the first sound output cavity.

3. The sound output component according to claim 2, characterized in that: The second sound output cavity is arranged on a side of the first sound output cavity away from the sound output channel.

4. The sound output component according to claim 3, characterized in that: The third sound output cavity is arranged on a side of the first sound output cavity away from the sound output channel, and the third sound output cavity is arranged close to the second sound output cavity.

5. The sound output component according to any one of claims 2 to 4, characterized in that: The inner space of the second sound-emitting cavity is smaller than the inner space of the first sound-emitting cavity; And / or, the space inside the third sound cavity is smaller than the space inside the second sound cavity.

6. The sound output component according to any one of claims 2 to 4, characterized in that: The first channel has a corner.

7. The sound output assembly according to any one of claims 2 to 4, characterized in that: The width of the second channel is smaller than the width of the first sound output cavity and the width of the second sound output cavity.

8. The sound output component according to claim 7, characterized in that: The width of the second channel is the same as the width of the first channel.

9. The sound output component according to any one of claims 2 to 4, characterized in that: The number of the sound output channels is multiple, and the multiple sound output channels are arranged side by side.

10. An electronic device, characterized in that: The electronic device includes a first shell, a second shell, a sound source component and the sound output component according to any one of claims 1 to 9, the first shell and the second shell are combined to form a containing cavity, the sound source component is arranged in the containing cavity, and the first shell is provided with the first sound output cavity, the second sound output cavity, the sound output channel and the third sound output cavity.

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