Electronic device

Abstract

The application relates to the technical field of electronic products, in particular to an electronic device, which comprises a device shell with a cavity, and a plurality of first sound holes and a plurality of second sound holes are respectively arranged at two ends of the device shell in the length direction of the device shell; a plurality of first microphones are arranged in the cavity and correspond to the plurality of first sound holes one by one; and a plurality of second microphones are arranged in the cavity and correspond to the plurality of second sound holes one by one. The electronic device is characterized in that the device shell, the first microphones and the second microphones are arranged, the first microphones and the second microphones are both arranged in plurality and are respectively arranged at two sides in the length direction of the device shell, so that a first microphone array and a second microphone array are formed, the number of microphones is increased, the effect of noise reduction and elimination and echo elimination of sound is improved, the influence of environmental noise is weakened, the sound quality is improved, and the user experience is improved.

Description

Technical Field

[0001] This application relates to the field of electronic product technology, and more particularly to an electronic device. Background Technology

[0002] Electronic devices are becoming increasingly intelligent and interacting with people more frequently, especially in voice interaction scenarios. For example, setting up voice assistants provides users with voice interaction recognition between electronic devices, enabling information search such as movies and news, navigation, and music playback, greatly facilitating people's lives.

[0003] However, when the surrounding environment is noisy, electronic devices are easily interfered with, resulting in poor noise cancellation and affecting the user experience. Utility Model Content

[0004] To address the aforementioned technical problems, this application provides an electronic device that can eliminate noise, reduce environmental noise interference, and improve user experience.

[0005] In a first aspect, this application provides an electronic device, comprising: The equipment housing has a cavity, and the equipment housing has a plurality of first acoustic holes and a plurality of second acoustic holes respectively opened at both ends in the length direction; The first microphone is provided in multiple locations, all of which are located within the cavity and are configured to correspond one-to-one with the multiple first sound holes; The second microphone is provided in multiple locations, all of which are located within the cavity and are configured to correspond one-to-one with the multiple second sound holes.

[0006] In some embodiments, a first circuit board with a plurality of microphone slots is further included, the plurality of microphone slots being arranged in a line, wherein at least two of the microphone slots are provided with a first microphone; The first circuit base plate is disposed within the cavity.

[0007] In some embodiments, the first circuit base plate is a rectangular plate extending along the width direction of the device housing in the length direction, and two microphone slots are provided on the first circuit base plate, the two microphone slots being symmetrically arranged with respect to the center line extending in the width direction of the first circuit base plate. The first circuit base plate is centered in the width direction of the device housing.

[0008] In some embodiments, the distance between the two first microphones is 22mm along the length of the first circuit board.

[0009] In some embodiments, the first circuit base plate is a rectangular plate that extends along the width direction of the device housing in the length direction, and two microphone slots are provided on the first circuit base plate, the two microphone slots being asymmetrically arranged with respect to the center line extending in the width direction of the first circuit base plate. The first circuit base plate is centered in the width direction of the device housing.

[0010] In some embodiments, a second circuit board with a plurality of microphone slots is further included, wherein the plurality of microphone slots are arranged in a line, and at least two of the microphone slots are provided with a second microphone; The second circuit base plate is disposed within the cavity.

[0011] In some embodiments, the second circuit base plate is a rectangular plate extending along the width direction of the device housing in the length direction, and the second circuit base plate is provided with two microphone slots, which are symmetrically arranged with respect to the center line extending in the width direction of the second circuit base plate. The second circuit base plate is centered in the width direction of the device housing.

[0012] In some embodiments, the distance between the two second microphones is 49mm along the length of the second circuit board.

[0013] In some embodiments, the device housing includes a rear cover and a circumferentially disposed middle shell surrounding the rear cover. The middle shell includes two side plates disposed opposite each other in the length direction of the device housing, wherein one side plate has the first sound hole and the other side plate has the second sound hole.

[0014] In some embodiments, the electronic device further includes a third microphone and a camera assembly disposed within the cavity; The rear cover plate is provided with a shooting hole corresponding to the camera component, and the rear cover plate is provided with a third sound hole corresponding to the third microphone.

[0015] In some embodiments, the device housing includes a front cover plate, and the front cover plate, the middle shell, and the rear cover plate surround to form the cavity; The front cover is provided with a display screen or the front cover is constructed as a display screen.

[0016] The technical solution provided in this application has the following advantages compared with the prior art: This electronic device, by setting up a device housing, a first microphone, and a second microphone, with multiple first sound holes and multiple second sound holes on the device housing, and multiple first and second microphones respectively located at both ends of the length direction of the device housing, can form a first microphone array and a second microphone array. By increasing the number of microphones, some microphones pick up sound, while others perform noise cancellation, thereby improving the noise reduction and echo cancellation effect, reducing the impact of environmental noise, improving sound quality, and thus enhancing the user experience. Attached Figure Description

[0017] 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.

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a front view of the electronic device described in the embodiments of this application; Figure 2 for Figure 1 A diagram showing the electronic equipment in the image from below; Figure 3 for Figure 1 A top view of the electronic equipment in the diagram; Figure 4 for Figure 1 A partial cross-sectional view of the electronic equipment in the diagram; Figure 5 for Figure 1 A rear view diagram of the electronic devices in the diagram; Figure 6 for Figure 1 A schematic diagram of the structure of the first circuit board of the electronic device in the diagram; Figure 7 for Figure 1 A schematic diagram of the structure of the second circuit board of the electronic device.

[0020] Among them, 1. Equipment housing; 11. Rear cover; 111. Third sound hole; 12. Middle shell; 120. Sound channel; 121. First sound hole; 122. Second sound hole; 13. Front cover; 2. First microphone; 3. Second microphone; 4. First circuit base plate; 5. Second circuit base plate. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this application, the solution of this application will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of this application, but this application may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of this application, and not all embodiments.

[0023] like Figures 1 to 7 As shown in the figure, this application provides an electronic device, which can be a smart TV, washing machine, air conditioner, disinfection cabinet and other household appliances, or a mobile phone, tablet, wearable device and other small electronic devices in daily life, or an in-vehicle device and other electronic devices that can perform human-computer voice interaction.

[0024] The electronic device includes a device housing 1, a first microphone 2, and a second microphone 3. The device housing 1 has a cavity, and multiple first sound holes 121 and multiple second sound holes 122 are respectively opened at both ends of its length. Multiple first microphones 2 are provided, each located within the cavity, and each first microphone 2 is correspondingly arranged with one of the multiple first sound holes 121. Multiple second microphones 3 are provided, each located within the cavity, and each second microphone 3 is correspondingly arranged with one of the multiple second sound holes 122. The length direction of the device housing 1 is as follows... Figure 1 As shown in the X direction, the width direction of the device housing 1 is as follows: Figure 1 Y direction shown in .

[0025] It should be noted that if the multiple first microphones 2 are selected of the same type, or if at least one first microphone 2 is of a different type from the rest of the first microphones 2, then the multiple first microphones 2 include at least two different microphone types. Similarly, if the multiple second microphones 3 are selected of the same type, or if at least one second microphone 3 is of a different type from the rest of the second microphones 3, then the multiple second microphones 3 include at least two different microphone types.

[0026] For example, in one specific implementation, the first microphone 2 and the second microphone 3 are of the same type, both being MEMS microphones, such as capacitive or piezoelectric microphones.

[0027] Understandably, this electronic device, by setting up a device housing 1, a first microphone 2 and a second microphone 3, with multiple first sound holes 121 and multiple second sound holes 122 on the device housing 1, and multiple first microphones 2 and multiple second microphones 3 respectively located on both sides of the length direction of the device housing 1, can form a first microphone array and a second microphone array. By increasing the number of microphones, some of which pick up sound and others perform noise cancellation, the effect of noise reduction and echo cancellation is improved, the influence of environmental noise is weakened, the sound quality is improved, and thus the user experience is enhanced.

[0028] Specifically, based on the first and second microphone arrays, sound from different directions is collected through the microphone arrays. The target speech and background noise are analyzed and separated using algorithms. Then, the background noise is suppressed or eliminated, thereby enabling the electronic device to adapt to different noise environments, improving the overall noise reduction effect, making the target speech clearer, and providing better speech quality.

[0029] It should be noted that the electronic device also includes an audio processor and storage and transmission devices. The audio processor has powerful computing capabilities and is used to process the acquired signals in real time. The storage and transmission devices are used to save and transport the processed audio signals.

[0030] The first microphone 2 and the second microphone 3 can collect voice signals emitted by a sound source located in the signal acquisition area. The sound source can be a user, such as a mobile phone, where the user issues a voice command, which the phone's microphone collects and executes. Alternatively, the voice signal can be emitted by other electronic devices, such as a smart robot issuing a voice command to turn on a smart speaker. The smart speaker's microphone can collect the voice signal emitted by the smart robot, perform voice recognition based on this signal, and determine whether to execute the voice command.

[0031] In some embodiments, refer to Figures 1 to 4 The equipment housing 1 includes a rear cover plate 11 and a middle shell 12 arranged circumferentially around the rear cover plate 11. The middle shell 12 includes two side plates arranged opposite each other in the length direction of the equipment housing 1, wherein a first sound hole 121 is opened on one side plate and a second sound hole 122 is opened on the other side plate.

[0032] Understandably, the first sound hole 121 and the second sound hole 122 are located on the outer periphery of the device housing 1 at this time, so that when the user holds the electronic device, the first sound hole 121 and the second sound hole 122 can be avoided from being blocked by the user's face or hand, thus affecting the microphone's acquisition of voice signals.

[0033] Reference Figure 4The device housing 1 has a sound channel 120 on its middle shell 12. One end of the sound channel 120 is connected to the external environment through a sound hole, and the other end is connected to the first microphone 2 or the second microphone 3, so that the external environment can be transmitted to the first microphone 2 or the second microphone 3 through the sound channel 120.

[0034] It should be noted that since both the first microphone 2 and the second microphone 3 are arrays, each microphone is configured with a corresponding channel 120, which makes the sound collected by each microphone directional and facilitates noise cancellation.

[0035] Furthermore, the aforementioned device housing 1 includes a front cover 13. A display screen is disposed on the front cover 13, meaning the display screen is mounted on the front cover 13. Alternatively, the front cover 13 can be configured as a display screen, meaning the display screen is equivalent to the front cover 13 of the device housing 1.

[0036] Reference Figure 5 The electronic device also includes a third microphone and a camera assembly disposed within the cavity. A shooting hole is provided on the rear cover 11 corresponding to the camera assembly, and a third sound hole 111 is provided on the rear cover 11 corresponding to the third microphone.

[0037] The third microphone is mainly used for sound pickup during video recording, and can be used together with the second microphone 3 and / or the first microphone 2 for sound acquisition and noise reduction.

[0038] Furthermore, the third microphone can be the same type of microphone as the first microphone 2, or the same type of microphone as the second microphone 3. Alternatively, the third microphone, the first microphone 2, and the second microphone 3 can all be of the same type, for example, all selected as MEMS microphones.

[0039] For example, the electronic device is a mobile phone. A second microphone 3 is located at the top of the phone, a first microphone 2 at the bottom, and a third microphone at the rear. In this configuration, there are two second microphones 3, two first microphones 2, and one third microphone. The two second microphones 3 and the two first microphones 2 are arranged in a linear array along the width of the phone, enabling omnidirectional sound pickup in all scenarios, allowing users to hear purer and clearer sound.

[0040] Optionally, in other embodiments, the device housing may include a front cover, a rear cover, and a middle shell, which together form the aforementioned cavity, with the front and rear covers positioned opposite each other. The middle shell has the aforementioned first acoustic hole, while the front cover has a second acoustic hole.

[0041] Alternatively, the equipment housing may not have a middle shell, but instead include a front cover plate and a rear shell with an inner cavity. The front cover plate and the rear shell enclose the aforementioned cavity, and the rear shell has the aforementioned first and second acoustic holes. Simultaneously, the rear shell also has the aforementioned third acoustic hole. In this case, the middle shell and the rear cover plate are essentially integrally formed as the rear shell.

[0042] Alternatively, the equipment housing may not have a middle shell, but instead include a rear cover plate and a front shell with an inner cavity. The front shell and the rear cover plate surround the aforementioned cavity, and the front shell has the aforementioned first and second acoustic holes. Simultaneously, the rear cover plate has the aforementioned third acoustic hole. In this case, the middle shell and the front cover plate are essentially integrally formed as the front shell.

[0043] Alternatively, the equipment housing may include a front cover and a rear cover, wherein the front cover has a U-shaped structure and the rear cover also has a U-shaped structure, and the front and rear covers together form the aforementioned cavity. In this case, a first sound hole and a second sound hole are respectively opened on the two side walls of the front or rear cover. In this case, a third sound hole is opened on the rear cover.

[0044] Reference Figure 6 The electronic device includes a first circuit board 4 having multiple microphone slots arranged in a line, wherein at least two microphone slots are provided with a first microphone 2. The first circuit board 4 is disposed within a cavity.

[0045] It should be noted that the aforementioned microphone slot can be a mounting slot for installing the first microphone 2, or an area on the first circuit base plate 4 for installing the first microphone 2, or other structures for installing the first microphone 2, such as mounting holes, without specific limitations here.

[0046] Understandably, by setting up a first circuit base plate 4, which has multiple microphone slots, a first microphone 2 can be set in at least two microphone slots as needed. In this case, at least two first microphones 2 share the first circuit base plate 4, which can reduce costs. Moreover, at this time, at least two first microphones 2 form a line array to sample and process the spatial characteristics of the sound source.

[0047] In other words, the number of first microphones 2 can be set to be the same as the number of microphone slots, or it can be set to be less than the number of microphone slots on the first circuit base plate 4. For example, the first circuit base plate 4 has four microphone slots, while the number of first microphones 2 can be two, three, or four.

[0048] It should be noted that the multiple microphone slots on the first circuit base plate 4 are arranged in a straight line. Taking the arrangement of multiple microphone slots along the length of the first circuit base plate 4 as an example, in the first case, the multiple microphone slots can be set at equal intervals. In this case, when the number of microphones is even, the multiple microphones can be divided into two groups, and the two groups of microphones are set symmetrically or asymmetrically with respect to the center line extending in the width direction of the first circuit base plate 4; when the number of microphone slots is odd, one of the microphone slots can be located in the middle position in the length direction of the first circuit base plate 4, or any microphone slot can be located in a position other than the middle position in the length direction of the first circuit base plate 4.

[0049] The second scenario is that multiple microphone slots can also be set at unequal intervals. For example, if there are N microphone slots, then the N microphone slots form (N-1) intervals, where at least one of the (N-1) intervals is different from the others.

[0050] For example, in one specific implementation, the first circuit base plate 4 is a rectangular plate extending along the width direction of the device housing 1 in the length direction, and the first circuit base plate 4 is provided with two microphone slots, which are symmetrically arranged with respect to the center line extending in the width direction of the first circuit base plate 4. The first circuit base plate 4 is centered in the width direction of the device housing 1.

[0051] Understandably, the first circuit base plate 4 is centered in the width direction of the device housing 1, and the two microphone slots are symmetrically arranged with respect to the center line extending in the width direction of the first circuit base plate 4. Thus, the two first microphones 2 are symmetrically arranged in the width direction of the device housing 1. This is beneficial to ensure that the length of the trace from the motherboard of the electronic device to the two first microphones 2 is the same, and also to ensure that the bandwidth of the sound collected by the two first microphones 2 is the same, which is convenient for subsequent sound processing.

[0052] Specifically, in the length direction of the first circuit base plate 4, the distance between the two first microphones 2 is 22mm, that is, the distance between each first microphone 2 and the center of the first circuit base plate 4 in the length direction is 11mm.

[0053] Optionally, in another specific implementation, the first circuit base plate is a rectangular plate extending along the width direction of the device housing in the length direction, and the first circuit base plate is provided with two microphone slots, which are asymmetrically arranged with respect to the center line extending in the width direction of the first circuit base plate. Furthermore, the first circuit base plate is centered in the width direction of the device housing.

[0054] Understandably, in this case, the two microphone slots are at different distances from the center of the first circuit board along its length.

[0055] Reference Figure 7 The electronic device includes a second circuit board 5 having multiple microphone slots arranged in a straight line, wherein at least two microphone slots are equipped with second microphones 3. The second circuit board 5 is disposed within a cavity.

[0056] It should be noted that the aforementioned microphone slot can be a mounting slot for installing the second microphone 3, or an area on the second circuit base plate 5 for installing the second microphone 3, or other structures for installing the second microphone 3, such as mounting holes, without specific limitations here.

[0057] Understandably, by setting up a second circuit board 5, which has multiple microphone slots, a second microphone 3 can be set in at least two microphone slots as needed. In this case, at least two second microphones 3 share the second circuit board 5, which can reduce costs. Moreover, at this time, at least two second microphones 3 form a line array to sample and process the spatial characteristics of the sound source.

[0058] In other words, the number of second microphones 3 can be set to be the same as the number of microphone slots, or it can be set to be less than the number of microphone slots on the second circuit board 5. For example, the second circuit board 5 has four microphone slots, while the number of second microphones 3 can be two, three, or four.

[0059] It should be noted that the multiple microphone slots on the second circuit base plate 5 are arranged in a straight line. Taking the arrangement of multiple microphone slots along the length of the second circuit base plate 5 as an example, the first case is that the multiple microphone slots can be set at equal intervals. In this case, when the number of microphones is even, the multiple microphones can be divided into two groups, and the two groups of microphones are set symmetrically or asymmetrically with respect to the center line extending in the width direction of the second circuit base plate 5. When the number of microphone slots is odd, one of the microphone slots can be located in the middle position in the length direction of the second circuit base plate 5, or any microphone slot can be located in a position other than the middle position in the length direction of the second circuit base plate 5. The second case is that the multiple microphone slots are set at unequal intervals. For example, if there are N microphone slots, then the N microphone slots form (N-1) intervals, where at least one of the (N-1) intervals is different from the other intervals.

[0060] For example, in one specific implementation, the second circuit base plate 5 is a rectangular plate extending along the width direction of the device housing 1 in the length direction, and the second circuit base plate 5 is provided with two microphone slots, which are symmetrically arranged with respect to the center line extending in the width direction of the second circuit base plate 5. The second circuit base plate 5 is also centered in the width direction of the device housing 1.

[0061] Understandably, the second circuit base plate 5 is centered in the width direction of the device housing 1, and the two second microphones 3 are symmetrically arranged in the length direction of the second circuit base plate 5. Thus, the distance between the two second microphones 3 and the center of the second circuit base plate 5 is the same. In this way, the two second microphones 3 are symmetrically arranged in the width direction of the device housing 1. This is beneficial to ensure that the length of the trace from the main board of the electronic device to the two second microphones 3 is the same, and it is also beneficial to ensure that the bandwidth of the sound collected by the two second microphones 3 is the same, which is convenient for subsequent sound processing.

[0062] Specifically, in the length direction of the second circuit base plate 5, the distance between the two second microphones 3 is 49mm, and the distance between each second microphone 3 and the center of the second circuit base plate 5 is 24.5mm.

[0063] Optionally, in another specific implementation, the second circuit base plate is a rectangular plate extending along the width direction of the device housing in the length direction, and the second circuit base plate is provided with two microphone slots, which are asymmetrically arranged with respect to the center line extending in the width direction of the second circuit base plate. Furthermore, the second circuit base plate is centered in the width direction of the device housing.

[0064] Understandably, in this case, the two microphone slots are at different distances from the center of the second circuit board along its length.

[0065] For example, taking a mobile phone as an example, the first microphone is located at the bottom of the phone, that is, at the lower side when the user holds the phone for a call. In this case, the main functions of the two first microphones are transmitting and recording voice messages during the call. The second microphone is located at the top of the phone, that is, at the upper side when the user holds the phone for a call. In this case, the main functions of the two second microphones are call noise reduction and audio pickup for video calls. The voice signals collected by the two first microphones and two second microphones are processed by an audio processor. The difference in sound waves collected by the first and second microphones is used to generate opposing sound waves to cancel out noise and improve sound pickup quality.

[0066] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0067] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An electronic device, characterized in that, include: The device housing (1) has a cavity, and the device housing (1) has a plurality of first sound holes (121) and a plurality of second sound holes (122) respectively at both ends in the length direction. The first microphone (2) is provided in multiple locations, all located within the cavity, and is configured to correspond one-to-one with the multiple first sound holes (121); The second microphone (3) is provided in multiple locations, all located within the cavity, and is configured to correspond one-to-one with the multiple second sound holes (122).

2. The electronic device according to claim 1, characterized in that, It also includes a first circuit board (4) with multiple microphone slots, the multiple microphone slots being arranged in a line, wherein at least two of the microphone slots are provided with a first microphone (2). The first circuit base plate (4) is disposed in the cavity.

3. The electronic device according to claim 2, characterized in that, The first circuit base plate (4) is a rectangular plate extending along the width direction of the device housing (1) in the length direction, and two microphone slots are provided on the first circuit base plate (4), and the two microphone slots are symmetrically arranged with respect to the center line extending in the width direction of the first circuit base plate (4). The first circuit base plate (4) is centered in the width direction of the device housing (1).

4. The electronic device according to claim 3, characterized in that, The distance between the two first microphones (2) is 22mm along the length of the first circuit base plate (4).

5. The electronic device according to claim 2, characterized in that, The first circuit base plate (4) is a rectangular plate extending along the width direction of the device housing (1) in the length direction, and two microphone slots are provided on the first circuit base plate (4), and the two microphone slots are asymmetrically arranged relative to the center line extending in the width direction of the first circuit base plate (4). The first circuit base plate (4) is centered in the width direction of the device housing (1).

6. The electronic device according to claim 1, characterized in that, It also includes a second circuit board (5) with multiple microphone slots arranged in a line, wherein at least two of the microphone slots are provided with a second microphone (3). The second circuit base plate (5) is disposed in the cavity.

7. The electronic device according to claim 6, characterized in that, The second circuit base plate (5) is a rectangular plate extending along the width direction of the device housing (1) in the length direction, and two microphone slots are provided on the second circuit base plate (5), and the two microphone slots are symmetrically arranged with respect to the center line extending in the width direction of the second circuit base plate (5); The second circuit base plate (5) is centered in the width direction of the device housing (1).

8. The electronic device according to claim 7, characterized in that, The distance between the two second microphones (3) along the length of the second circuit base plate (5) is 49mm.

9. The electronic device according to claim 1, characterized in that, The device housing (1) includes a rear cover plate (11) and a middle shell (12) arranged circumferentially around the rear cover plate (11). The middle shell (12) includes two side plates arranged opposite to each other in the length direction of the device housing (1). One of the side plates is provided with the first sound hole (121), and the other side plate is provided with the second sound hole (122).

10. The electronic device according to claim 9, characterized in that, The electronic device also includes a third microphone and a camera assembly disposed within the cavity; The rear cover (11) is provided with a shooting hole corresponding to the camera component, and the rear cover (11) is provided with a third sound hole (111) corresponding to the third microphone.

11. The electronic device according to claim 1, characterized in that, The device housing includes a front cover (13), on which a display screen is provided or the front cover (13) is configured as a display screen.

12. The electronic device according to claim 1, characterized in that, The electronic device is a mobile phone.

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