CN117857677A - Electronic device and sound control method - Google Patents

Abstract

The embodiment of the application provides electronic equipment and a sound control method. An electronic device includes: the device comprises a shell, a digital loudspeaker, a display screen and a controller; the shell comprises a middle frame and a rear cover, and the rear cover is connected with one side of the middle frame; the display screen is connected with the other side of the middle frame, a first sound outlet gap is formed between the display screen and the middle frame, a first sound outlet hole is formed in the middle frame, and a second sound outlet gap is formed between the middle frame and the rear cover; the digital loudspeaker and the controller are both positioned in the shell, the digital loudspeaker comprises a fixing part and a sound generating part, the fixing part is connected with the sound generating part, the sound generating part comprises a first sub sound generating part, a second sub sound generating part and a third sub sound generating part, the first sub sound generating part, the second sub sound generating part and the third sub sound generating part are all electrically connected with the controller, the first sub sound generating part faces the first sound outlet hole, the second sub sound generating part faces the first sound outlet gap, and the third sub sound generating part faces the second sound outlet gap.

Description

Electronic device and sound control method

Technical Field

The application relates to the technical field of electronic equipment, in particular to electronic equipment and a sound control method.

Background

With the development of technology, electronic devices are increasingly used. Sound emitting devices are often provided in electronic devices, for example, headphones, loudspeakers, exciters, piezoceramics, etc., by means of which sound can be emitted by the electronic device. But electronic devices often have difficulty speaking directionally when speaking.

Disclosure of Invention

The embodiment of the application provides electronic equipment and a sound control method, which are used for solving the problem that the electronic equipment in the related art is difficult to directionally sound when sounding.

In order to solve the technical problems, the application is realized as follows:

in a first aspect, an embodiment of the present application provides an electronic device, including: the device comprises a shell, a digital loudspeaker, a display screen and a controller;

the shell comprises a middle frame and a rear cover, and the rear cover is connected with one side of the middle frame; the display screen is connected with the other side of the middle frame, a first sound outlet gap is formed between the display screen and the middle frame, a first sound outlet hole is formed in the middle frame, and a second sound outlet gap is formed between the middle frame and the rear cover;

the digital loudspeaker and the controller are both positioned in the shell, the digital loudspeaker comprises a fixing part and a sound generating part, the fixing part is connected with the sound generating part, the sound generating part comprises a first sub sound generating part, a second sub sound generating part and a third sub sound generating part, the first sub sound generating part, the second sub sound generating part and the third sub sound generating part are all electrically connected with the controller, the first sub sound generating part faces the first sound outlet hole, the second sub sound generating part faces the first sound outlet gap, and the third sub sound generating part faces the second sound outlet gap; the controller is used for controlling at least one of the first sub-sound-emitting part, the second sub-sound-emitting part and the third sub-sound-emitting part to emit sound according to the state of the electronic equipment so as to enable the electronic equipment to emit sound in a directional mode.

In a second aspect, an embodiment of the present application provides a sound control method, which is applied to the electronic device in the first aspect, where the method includes:

according to the state of the electronic equipment, any one of the first sub-sound-emitting part, the second sub-sound-emitting part and the third sub-sound-emitting part is controlled to emit sound so as to enable the electronic equipment to emit sound in a directional mode

In this embodiment of the present application, since the sound generating portion of the digital speaker includes the first sub-sound generating portion, the second sub-sound generating portion, and the third sub-sound generating portion, the first sub-sound generating portion, the second sub-sound generating portion, and the third sub-sound generating portion are all electrically connected to the controller, and therefore the controller can respectively control the first sub-sound generating portion, the second sub-sound generating portion, and the third sub-sound generating portion to generate sound. Because the first sound outlet gap is formed between the display screen and the middle frame, the first sound outlet hole is formed in the middle frame 1, the second sound outlet gap is formed between the middle frame 1 and the rear cover, the first sub sound outlet part faces the first sound outlet hole, the second sub sound outlet part faces the first sound outlet gap, and the third sub sound outlet part faces the second sound outlet gap, when the electronic equipment is required to emit sound, the controller can control the first sub sound outlet part to produce sound, and control the second sub sound outlet part to emit an inverted sound signal with opposite phase to the sound signal of the first sub sound outlet part, and control the third sub sound outlet part to emit an inverted sound signal with opposite phase to the sound signal of the first sub sound outlet part, so that when the sound signal emitted by the first sub sound outlet part is transmitted to the first sound outlet hole, the first sound outlet gap and the second sound outlet gap, the first sound outlet gap are respectively due to the inverted sound signals emitted by the second sub sound outlet part and the third sub sound outlet part, and the second sound outlet gap are enabled to be offset by the first sound outlet part, and the sound is enabled to be quite sound from the first sound outlet part to be quite sound-orientated by the first sound Kong Chuanchu. Similarly, when the second sub-sounding part is controlled to sound, the first sub-sounding part and the third sub-sounding part can be controlled to emit opposite-phase sound signals with opposite phases to the sound signals of the second sub-sounding part, so that the electronic equipment directionally sounds; when the third sub-sounding part is controlled to sound, the first sub-sounding part and the second sub-sounding part can be controlled to sound opposite phase sound signals of the third sub-sounding part, so that the electronic equipment can sound directionally.

That is, in this embodiment of the present application, through setting up first sub-sound generating portion, second sub-sound generating portion and third sub-sound generating portion, first sub-sound generating portion, second sub-sound generating portion and third sub-sound generating portion all are connected with the controller electricity, and first sub-sound generating portion is towards first play sound hole, and second sub-sound generating portion is towards first play sound clearance, and third sub-sound generating portion is towards second play sound clearance to the controller can control first sub-sound generating portion, second sub-sound generating portion and third sub-sound generating portion sound production, makes the directional sound production of electronic equipment.

Drawings

FIG. 1 shows one of the schematic diagrams of an electronic device provided in an embodiment of the present application;

FIG. 2 shows one of the exploded views of an electronic device provided in an embodiment of the present application;

FIG. 3 shows one of the schematic diagrams of a middle frame provided in an embodiment of the present application;

FIG. 4 shows an exploded view of a center provided in an embodiment of the present application;

FIG. 5 illustrates one of the partial cross-sectional views of an electronic device provided in an embodiment of the present application;

FIG. 6 illustrates one of the perspective views of the back of an electronic device provided in an embodiment of the present application;

FIG. 7 illustrates one of the cross-sectional views of an electronic device provided in an embodiment of the present application;

FIG. 8 is a diagram illustrating a second explosion diagram of an electronic device according to an embodiment of the present disclosure;

FIG. 9 is a second schematic diagram of a middle frame according to an embodiment of the present disclosure;

FIG. 10 is a second schematic diagram of a middle frame according to an embodiment of the present disclosure;

FIG. 11 shows a second perspective view of the back of an electronic device provided in an embodiment of the present application;

FIG. 12 is a third exploded view of an electronic device according to an embodiment of the present disclosure;

FIG. 13 illustrates a second partial cross-sectional view of an electronic device according to an embodiment of the present application;

FIG. 14 shows a second cross-sectional view of an electronic device according to an embodiment of the present application;

FIG. 15 shows a fourth exploded view of an electronic device according to an embodiment of the present application;

FIG. 16 is a second schematic diagram of an electronic device according to an embodiment of the present disclosure;

FIG. 17 illustrates a side view of an electronic device provided in an embodiment of the present application;

fig. 18 shows a flowchart of a sound control method provided in an embodiment of the present application.

Reference numerals:

10: a housing; 20: a digital speaker; 30: a first seal; 40: a display screen; 50: a second seal; 60: a third seal; 11: a first sound outlet hole; 12: a first fixing plate; 13: a second fixing plate; 14: a fourth sound outlet hole; 15; a sixth seal; 21: a fixing part; 22: a sound generating part; 41: a first sound outlet gap; 42: a fourth seal; 101: a middle frame; 102: a rear cover; 121: a second sound outlet hole; 131: a third sound outlet hole; 221: a first sub-sound emitting part; 222: a second sub-sound emitting part; 223: a third sub-sound emitting part; 224: a fourth sub-sound emitting unit; 225: a fifth sub-sounding part; 1021: a second sound outlet gap; 1022: a fifth seal; 100: a main board; 200: a motherboard bracket; 300: and a battery.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

As shown in fig. 1 to 17, the electronic device includes: a housing 10, a digital speaker 20, a display screen 30, and a controller.

The housing 10 includes a middle frame 101 and a rear cover 102, the rear cover 102 being connected to one side of the middle frame 101; the display screen 40 is connected to the other side of the middle frame 10, a first sound outlet gap 41 is formed between the display screen 40 and the middle frame 10, a first sound outlet hole 11 is formed in the middle frame 101, and a second sound outlet gap 1021 is formed between the middle frame 101 and the rear cover 102. The digital loudspeaker 20 and the controller are both positioned in the shell 10, the digital loudspeaker 20 comprises a fixed part 21 and a sound generating part 22, the fixed part 21 is connected with the sound generating part 22, the sound generating part 22 comprises a first sub sound generating part 221, a second sub sound generating part 222 and a third sub sound generating part 223, the first sub sound generating part 221, the second sub sound generating part 222 and the third sub sound generating part 223 are all electrically connected with the controller, the first sub sound generating part 221 faces the first sound outlet 11, the second sub sound generating part 222 faces the first sound outlet 41, and the third sub sound generating part 223 faces the second sound outlet 1021; the controller is used for controlling at least one of the first sub-sound-emitting part, the second sub-sound-emitting part and the third sub-sound-emitting part to emit sound according to the state of the electronic equipment so as to make the electronic equipment emit sound in a directional mode.

In the embodiment of the present application, since the sound generating portion 33 of the digital speaker 20 includes the first sub sound generating portion 221, the second sub sound generating portion 222, and the third sub sound generating portion 223, the first sub sound generating portion 221, the second sub sound generating portion 222, and the third sub sound generating portion 223 are all electrically connected to the controller, and thus the controller can control the first sub sound generating portion 221, the second sub sound generating portion 222, and the third sub sound generating portion 223 to generate sound, respectively. Since the first sound outlet gap 41 is provided between the display screen 40 and the middle frame 10, the middle frame 101 is provided with the first sound outlet hole 11, the middle frame 101 and the rear cover 102 are provided with the second sound outlet gap 1021, the first sub sound outlet 221 faces the first sound outlet hole 11, the second sub sound outlet 222 faces the first sound outlet gap 41, and the third sub sound outlet 223 faces the second sound outlet gap 1021, when the electronic device is required to emit sound, the controller can control the first sub sound outlet 221 to produce sound, and control the second sub sound outlet 222 to produce an inverted sound signal with the opposite phase to the sound signal of the first sub sound outlet 221, and control the third sub sound outlet 223 to produce an inverted sound signal with the opposite phase to the sound signal of the first sub sound outlet 221, so that when the sound signal produced by the first sub sound outlet 221 is transmitted to the first sound outlet hole 11, the first sound outlet gap 41 and the second sound outlet gap 1021 can be offset by the inverted sound signal of the second sub sound outlet 221 and the first sound outlet gap 1021, and the sound signal produced by the second sub sound outlet 222 can be offset from the first sound outlet gap 11 and the first sound outlet gap 221. Similarly, when the second sub-sounding part 222 is controlled to sound, the first sub-sounding part 221 and the third sub-sounding part 223 can be controlled to sound in opposite phase to the sound signal of the second sub-sounding part 222, so that the electronic device can sound in a directional manner; when the third sub-sound emitting part 223 is controlled to emit sound, the first sub-sound emitting part 221 and the second sub-sound emitting part 222 may be controlled to emit an inverted sound signal having a phase opposite to that of the sound signal of the third sub-sound emitting part 223, so that the electronic device emits sound in a directional manner.

That is, in the embodiment of the present application, by providing the first sub-sound generating portion 221, the second sub-sound generating portion 222, and the third sub-sound generating portion 223, the first sub-sound generating portion 221, the second sub-sound generating portion 222, and the third sub-sound generating portion 223 are all electrically connected to the controller, the first sub-sound generating portion 221 faces the first sound outlet 11, the second sub-sound generating portion 222 faces the first sound outlet gap 41, and the third sub-sound generating portion 223 faces the second sound outlet gap 1021, so that the controller can control the first sub-sound generating portion 221, the second sub-sound generating portion 222, and the third sub-sound generating portion 223 to generate sound, so that the electronic apparatus can generate sound directionally.

In addition, in some embodiments, the first side wall of the middle frame 101 is provided with a first sound outlet hole 11, the digital speaker 20 is located in the housing 10, the housing 10 is provided with a first sealing member 30, the fixing portion 21, the first sealing member 30 and the inner wall of the housing 10 form a sealed accommodating cavity, the first sub-sound emitting portion 221 is located in the sealed accommodating cavity, the first sound outlet hole 11 is communicated with the sealed accommodating cavity, and the first sub-sound emitting portion enables sound emitted by the sound emitting portion 22 to be transmitted from the first sound outlet hole 11.

Since the first sound outlet 11 is provided on the first side wall of the middle frame 101, the digital speaker 20 is located in the housing 10, the fixing portion 21 of the digital speaker 20, the first sealing member 30 in the housing 10, and the inner wall of the housing 10 form a sealed receiving cavity, and the first sub-sound generating portion 221 is located in the sealed receiving cavity, after the first sub-sound generating portion 221 generates sound, the sound cannot be transmitted to other positions inside the electronic device through the receiving cavity due to the first sealing member 30 after the sound is transmitted to the receiving cavity. Since the first sound outlet hole 11 communicates with the seal accommodating chamber, sound in the seal accommodating chamber is transmitted from the first sound outlet hole 11. That is, in this embodiment of the present application, through setting up first sound hole 11 on the first lateral wall of casing 10, and make digital speaker 20's fixed part 21, first sealing member 30 and casing 10's inner wall form sealed holding chamber, first sub-sound producing part 221 is located sealed holding chamber, first sound hole 11 and sealed holding chamber intercommunication, thereby make digital speaker 20's sound only spread from first sound hole 11, avoid digital speaker 20's sound to transmit in electronic equipment is inside, the problem that the sound revealed appears, and, through setting up digital speaker 20, only need set up sealed holding chamber, only need set up one and hold the chamber, avoid setting up front chamber and rear chamber, thereby can practice thrift electronic equipment's inner space, improve electronic equipment's inner space's utilization ratio.

It should be noted that, in the embodiment of the present application, the seal accommodating cavity is equivalent to the front cavity of the sound generating device in the related art, in the embodiment of the present application, only the front cavity is set for the digital speaker 20, and the rear cavity is not set, so that the internal space of the electronic device can be saved, and the internal space utilization rate of the electronic device is improved.

In addition, in the embodiment of the present application, the digital speaker 20 is manufactured by using the MEMS technology, and a driving chip is integrated, and includes a plurality of electrostatic vibration units (pixels) to form an array, when each electrostatic vibration unit works, vibration pulses are generated at an ultrasonic frequency, the whole device adopts the digital sound reconstruction (Digital Sound Reconstruction, DSR) technology, an input digital signal is reconstructed into an analog audio signal, the number of vibration units required is determined by corresponding signal amplitudes at each sampling point of the PCM audio signal, the energy of the required acoustic signal is accumulated by the high-frequency pulse energy of the plurality of vibration units, and the number of vibration units required with different amplitudes is different and is allocated by the driving IC. The whole process is directly reconstructed into an audio sound signal by the digital I2S signal, the built-in drive IC of the single body is not needed, the participation of the power amplifier of the existing sound output device is not needed, and the digital loudspeaker 20 is high-frequency pulse accumulation, so that the single body does not need a rear cavity of the traditional sound output device when in operation, the volume can be greatly reduced, and more space is made for electronic equipment.

In addition, in the present embodiment, the first sealing member 30 includes at least one of a sealant and a sealing foam.

The first sealing member 30 may be a sealant, the first sealing member 30 may also be a sealing foam, the first sealing member 30 may also be a combination of the sealant and the sealing foam, that is, part of the first sealing member 30 is a sealant, and part of the first sealing member 30 is a sealing foam. In addition, by providing the first seal 30 as a sealant and/or a sealing foam, the cost of the electronic device can also be reduced.

In addition, in some embodiments, as shown in fig. 2, a first fixing plate 12 and a second fixing plate 13 are connected to the first side wall, the first fixing plate 12 and the second fixing plate 13 are both located in the housing 10, the first fixing plate 12 is opposite to the second fixing plate 13, a space between the first fixing plate 12 and the second fixing plate 13 is in communication with the first sound outlet 11, and the digital speaker 20 is located between the first fixing plate 12 and the second fixing plate 13. The fixing portion 21 is hermetically connected to the first fixing plate 12 and the second fixing plate 13 by the first seal 30, respectively, and the first seal 30, the fixing portion 21, the first fixing plate 12, the second fixing plate 13, and the first side wall form a sealed accommodating chamber.

Since the first side wall is connected with the first fixing plate 12 and the second fixing plate 13, the first fixing plate 12 is opposite to the second fixing plate 13, the digital loudspeaker 20 is located between the first fixing plate 12 and the second fixing plate 13, and the fixing portion 21 is respectively in sealing connection with the first fixing plate 12 and the second fixing plate 13 through the first sealing member 30, so that the gap between the fixing portion 21 and the first fixing plate 12 corresponds to the gap between the fixing portion 21 and the first fixing plate 12, and the gap between the fixing portion 21 and the second fixing portion 21 is sealed by the first sealing member 30, so that the sealing accommodating cavity is formed by the fixing portion 21, the first sealing member 30, the first fixing plate 12, the second fixing plate 13 and the first side wall. Since the sound generating portion 22 is located between the first fixing plate 12 and the second fixing plate 13, after the sound generating portion 22 generates the sound, the sound is blocked by the first sealing member 30, so that the sound cannot be transmitted to other positions inside the electronic device, and the sound can only be transmitted from the first sound outlet 11 on the first side wall. In addition, by providing the first fixing plate 12 and the second fixing plate 13, it is also possible to facilitate formation of the seal accommodating chamber.

When the first side wall is connected with the first fixing plate 12 and the second fixing plate 13, there is no gap between the first fixing plate 12 and the first side wall, and there is no gap between the second fixing plate 13 and the first side wall.

In addition, in some embodiments, as shown in fig. 2 and 9, the first fixing plate 12 is close to the display screen 40, the second fixing plate 13 is far from the display screen 40, and a fourth sealing member 42 is disposed between the display screen 40 and the first fixing plate 12, and the fourth sealing member 42 seals a gap between the display screen 40 and the first fixing plate 12. The first fixing plate 12 is provided with a second sound outlet 121, the second sound outlet 121 faces the first sound outlet gap 41, the second sound outlet 121 is communicated with the first sound outlet gap 41, and the second sub-sound emitting part 222 faces the second sound outlet 121.

Since the first sound outlet gap 41 is formed between the display screen 40 and the housing 10, the first fixing plate 12 is provided with the second sound outlet hole 121, the second sound outlet hole 121 is communicated with the first sound outlet gap 41, the first sub-sound emitting portion 221 faces the first sound outlet hole 11, and the second sound emitting portion 22 faces the second sound outlet hole 121, after the first sub-sound emitting portion 221 emits sound, the sound is blocked by the first sealing member 30, the sound emitted by the first sub-sound emitting portion 221 can be emitted from the first sound outlet hole 11, and after the second sub-sound emitting portion 222 emits sound, the sound is blocked by the first sealing member 30, and the sound emitted by the second sub-sound emitting portion 222 is emitted from the second sound outlet hole 121. In addition, since the fourth sealing member 42 is disposed between the display screen 40 and the first fixing plate 12, the fourth sealing member 42 seals the gap between the display screen 40 and the first fixing plate 12, so that the sound emitted from the second sound emitting hole 121 is blocked by the fourth sealing member 42 when being diffused, so that the sound is transmitted to only the first sound emitting gap 41, and finally, is transmitted from the first sound emitting gap 41, i.e., is transmitted to the external space of the electronic device from the first sound emitting gap 41. That is, by providing the first sound outlet gap 41, the sound outlet channel of the electronic device can be increased, thereby improving the sound effect of the electronic device.

In addition, the sound emitted from the first sub-sound emitting portion 221 may also be emitted from the first sound emitting gap 41, and the sound emitted from the second sub-sound emitting portion 222 may also be emitted from the first sound emitting hole 11, at this time, the electronic device may have a problem of sound leakage. Similarly, when the sound emitted by the second sub-sound emitting portion 222 is only required to be emitted from the first sound emitting gap 41, the first sub-sound emitting portion 221 can emit an inverted sound signal with the opposite phase to the sound of the second sound emitting portion 22, so as to cancel the sound transmitted by the second sub-sound emitting portion 222 to the first sound emitting hole 11, and the sound of the second sub-sound emitting portion 222 is only emitted from the first sound emitting gap 41, so that the leakage of the electronic device is avoided.

In addition, in some embodiments, as shown in fig. 4, 8 and 9, a fifth sealing member 1022 is further provided in the case 10, the fifth sealing member 1022 being located between the rear cover 102 and the second fixing plate 13, the fifth sealing member 1022 sealing a gap between the rear cover 102 and the second fixing plate 13. The second fixing plate 13 is provided with a third sound outlet 131, the third sound outlet 131 is opposite to the second sound outlet gap 1021, the third sound outlet 131 is communicated with the second sound outlet gap 1021, and the third sub-sound producing part 223 faces the third sound outlet 131.

When the second sound outlet gap 1021 is provided between the rear cover 102 and the middle frame 101, the second fixing plate 13 is provided with the third sound outlet hole 131, and the third sound outlet hole 131 is communicated with the second sound outlet gap 1021, at this time, after the third sub-sound emitting portion 223 emits sound, the sound of the third sub-sound emitting portion 223 is blocked by the first sealing member 30, so that the sound cannot be transmitted to other positions inside the electronic device, and the sound is transmitted from the third sound outlet hole 131. In addition, since the fifth sealing member 1022 is located between the rear cover 102 and the second fixing plate 13, the fifth sealing member 1022 seals a gap between the rear cover 102 and the second fixing plate 13, and thus, after sound is transmitted from the third sound outlet 131, the sound is blocked by the fifth sealing member 1022 so that the sound is transmitted to only the second sound outlet gap 1021, and is transmitted from the second sound outlet gap 1021, i.e., is transmitted to an external space of the electronic device through the second sound outlet gap 1021. That is, by setting the second sound outlet gap 1021, a sound outlet channel of the electronic device can be increased, thereby improving the sound effect of the electronic device.

In addition, the sound emitted from the first sub-sound emitting portion 221 may be emitted from the first sound emitting gap 41 and the second sound emitting gap 1021, the sound emitted from the second sub-sound emitting portion 222 may be emitted from the first sound emitting hole 11 and the second sound emitting gap 1021, the sound emitted from the third sub-sound emitting portion 223 may be emitted from the first sound emitting hole 11 and the first sound emitting gap 41, and at this time, the electronic device may have a problem of sound leakage, and in order to avoid such a problem, when the sound emitted from the first sub-sound emitting portion 221, and only the sound emitted from the first sound emitting hole 11 is required, the second sub-sound emitting portion 222 may emit an inverted sound signal having a phase opposite to that of the sound of the first sub-sound emitting portion 221, and the third sub-sound emitting portion 223 may emit a sound signal having a phase opposite to that of the sound of the first sub-sound emitting portion 221, thereby canceling the sound emitted from the first sub-sound emitting portion 221 to the first sound emitting gap 11, canceling the sound emitted from the first sub-sound emitting portion 221 to the sound emitting gap 1021, and thus avoiding the sound leakage of the first sub-sound emitting portion 221 from the first sound emitting portion 11. Similarly, when the sound emitted by the second sub-sound emitting portion 222 is only required to be emitted from the first sound emitting gap 41, the first sub-sound emitting portion 221 may be caused to emit an inverted sound signal with the opposite phase to the sound of the second sub-sound emitting portion 222, and the third sub-sound emitting portion 223 may be caused to emit an inverted sound signal with the opposite phase to the sound of the second sub-sound emitting portion 222, so as to cancel the sound transmitted by the second sub-sound emitting portion 222 to the first sound emitting hole 11, and cancel the sound transmitted by the second sub-sound emitting portion 222 to the second sound emitting gap 1021, so that the sound of the second sub-sound emitting portion 222 is only emitted from the first sound emitting gap 41, thereby avoiding the leakage of the electronic device. Similarly, when the sound emitted by the third sub-sound emitting portion 223 only needs to be emitted from the second sound emitting gap 1021, the first sub-sound emitting portion 221 may be caused to emit an inverted sound signal with the opposite phase to the sound of the third sub-sound emitting portion 223, and the second sub-sound emitting portion 222 may be caused to emit an inverted sound signal with the opposite phase to the sound of the third sub-sound emitting portion 223, so as to cancel the sound transmitted by the third sub-sound emitting portion 223 to the first sound emitting hole 11, and cancel the sound transmitted by the third sub-sound emitting portion 223 to the first sound emitting gap 41, so that the sound of the third sub-sound emitting portion 223 is emitted from the second sound emitting gap 1021 only, thereby avoiding the leakage of the electronic device.

In addition, in some embodiments, as shown in fig. 9, a fourth sound outlet 14 is disposed on a second side wall and/or a third side wall of the middle frame 101, the second side wall is opposite to the third side wall, and the first side wall is located between the second side wall and the third side wall, and the first side wall is connected to the second side wall and the third side wall, respectively. The space between the first fixing plate 12 and the second fixing plate 13 communicates with the fourth sound outlet hole 14. The housing 10 is further provided with a second seal 50 and/or a third seal 60, the second seal 50 being provided in the gaps between the first and second fixing plates 12, 13 and the second side wall, and the third seal 60 being provided in the gaps between the first and second fixing plates 12, 13 and the third side wall. The sound generating part 22 further includes a fourth sub sound generating part 224 and a fifth sub sound generating part 225, the fourth sub sound generating part 224 and the fifth sub sound generating part 225 are electrically connected to the controller, the fourth sub sound generating part 224 faces the fourth sound outlet 14 on the second side wall, and the fifth sub sound generating part 225 faces the fourth sound outlet 14 on the third side wall.

Since the second side wall and/or the third side wall of the housing 10 are/is provided with the fourth sound outlet 14, the second side wall is opposite to the third side wall, and the first side wall is located between the second side wall and the third side wall, and the first side wall is connected with the second side wall and the third side wall, respectively, and the space between the first fixing plate 12 and the second fixing plate 13 is communicated with the fourth sound outlet 14, after the sound is transmitted between the first fixing plate 12 and the second fixing plate 13, the sound can be transmitted from the fourth sound outlet 14 on the second side wall and/or the third side wall. Since the second sealing member 50 and/or the third sealing member 60 are further disposed in the housing 10, the second sealing member 50 is disposed in the gaps between the first fixing plate 12 and the second fixing plate 13 and the second side wall, and the third sealing member 60 is disposed in the gaps between the first fixing plate 12 and the second fixing plate 13 and the third side wall, the second sealing member 50 can seal the gaps between the first fixing plate 12 and the second fixing plate 13 and the second side wall, so that the first fixing plate 12, the second fixing plate 13 and the second side wall can form a sealed space, when sound is transmitted thereto, the sound is blocked by the second sealing member 50 from being transmitted to other positions of the electronic device, and similarly, the third sealing member 60 can seal the gaps between the first fixing plate 12 and the second fixing plate 13 and the third side wall, so that the first fixing plate 12, the second fixing plate 13 and the third side wall can form a sealed space, when sound is transmitted thereto, the sound is blocked from being transmitted to other positions of the electronic device by the third sealing member 60. Since the fourth sub-sound emitting part 224 faces the second side wall and the fifth sub-sound emitting part 225 faces the third side wall, after the fourth sub-sound emitting part 224 emits sound, the sound may be emitted from the fourth sound emitting hole 14 on the second side wall, and after the fifth sub-sound emitting part 225 emits sound, the sound may be emitted from the fourth sound emitting hole 14 on the third side wall. That is, by providing the fourth sound outlet 14 on the second side wall and/or the third side wall, the sound outlet channel of the electronic device can be increased, and the sound effect of the electronic device can be improved.

In addition, when the sound emitted from the first sub-sound emitting portion 221 is only required to be emitted from the first sound emitting hole 11, the second sub-sound emitting portion 222 may emit an inverted sound signal with a phase opposite to that of the first sub-sound emitting portion 221, the third sub-sound emitting portion 223 may emit an inverted sound signal with a phase opposite to that of the first sub-sound emitting portion 221, and the fifth sub-sound emitting portion 225 may emit a sound signal with a phase opposite to that of the first sub-sound emitting portion 221, so as to cancel the sound transmitted from the first sub-sound emitting portion 221 to the first sub-sound emitting portion 41, cancel the sound transmitted from the first sub-sound emitting portion 221 to the first sub-sound emitting portion 11, and cancel the sound transmitted from the first sub-sound emitting portion 221 to the first sub-sound emitting portion 14, so as to avoid the sound transmitted from the first sub-sound emitting portion 221 to the first sub-sound emitting portion 14. For the sound that needs to be emitted by the second sub-generating portion to be emitted only from the first sound emitting gap 41, specific reference may be made to the sound emitted by the first sub-generating portion 221 to be emitted only from the first sound emitting hole 11, which is not described herein. For the sound emitted by the third sub-sound emitting portion 223 only passes out of the second sound emitting gap 1021, it is specifically possible to refer to that the sound of the first sub-sound emitting portion 221 only passes out of the first sound emitting hole 11, and the details are not repeated here. For the sound emitted by the fourth sub-sound emitting portion 224 to be emitted only from the fourth sound emitting hole 14 on the second side wall, reference may be made to the sound emitted by the first sub-sound emitting portion 221 to be emitted only from the first sound emitting hole 11, which is not described herein. For the sound emitted by the fifth sub-sound emitting portion 225 to be emitted only from the fourth sound emitting hole 14 on the third side wall, reference may be made to the sound emitted by the first sub-sound emitting portion 221 to be emitted only from the first sound emitting hole 11, which is not described herein.

In addition, in some embodiments, as shown in fig. 9, a sixth seal 15 is provided in the case 10, the sixth seal 15 is located in the case 10, and the sixth seal 15 is located between the sound emitting portion 22 and the first sound emitting hole 11 and surrounds the first sound emitting hole 11, and the sixth seal 15 seals a gap between the sound emitting portion 22 and the case 10.

Since the sixth seal 15 is located between the sound emitting portion 22 and the first sound emitting hole 11 and surrounds the first sound emitting hole 11, after the sound emitting portion 22 emits sound, the sixth seal 15 can block sound from diffusing after being transferred to the first sound emitting hole 11 so that sound is only transferred out of the first sound emitting hole 11.

It should be noted that, in the embodiment of the present application, the electronic device includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.

In this embodiment, a dust screen may be disposed on the digital speaker 20 to avoid the contact between dust or impurities and the digital speaker 20, which may affect the digital speaker 20.

In the embodiment of the present application, since the sound generating portion 33 of the digital speaker 20 includes the first sub sound generating portion 221, the second sub sound generating portion 222, and the third sub sound generating portion 223, the first sub sound generating portion 221, the second sub sound generating portion 222, and the third sub sound generating portion 223 are all electrically connected to the controller, and thus the controller can control the first sub sound generating portion 221, the second sub sound generating portion 222, and the third sub sound generating portion 223 to generate sound, respectively. Since the first sound outlet gap 41 is provided between the display screen 40 and the middle frame 10, the middle frame 101 is provided with the first sound outlet hole 11, the middle frame 101 and the rear cover 102 are provided with the second sound outlet gap 1021, the first sub sound outlet 221 faces the first sound outlet hole 11, the second sub sound outlet 222 faces the first sound outlet gap 41, and the third sub sound outlet 223 faces the second sound outlet gap 1021, when the electronic device is required to emit sound, the controller can control the first sub sound outlet 221 to produce sound, and control the second sub sound outlet 222 to produce an inverted sound signal with the opposite phase to the sound signal of the first sub sound outlet 221, and control the third sub sound outlet 223 to produce an inverted sound signal with the opposite phase to the sound signal of the first sub sound outlet 221, so that when the sound signal produced by the first sub sound outlet 221 is transmitted to the first sound outlet hole 11, the first sound outlet gap 41 and the second sound outlet gap 1021 can be offset by the inverted sound signal of the second sub sound outlet 221 and the first sound outlet gap 1021, and the sound signal produced by the second sub sound outlet 222 can be offset from the first sound outlet gap 11 and the first sound outlet gap 221. Similarly, when the second sub-sounding part 222 is controlled to sound, the first sub-sounding part 221 and the third sub-sounding part 223 can be controlled to sound in opposite phase to the sound signal of the second sub-sounding part 222, so that the electronic device can sound in a directional manner; when the third sub-sound emitting part 223 is controlled to emit sound, the first sub-sound emitting part 221 and the second sub-sound emitting part 222 may be controlled to emit an inverted sound signal having a phase opposite to that of the sound signal of the third sub-sound emitting part 223, so that the electronic device emits sound in a directional manner.

That is, in the embodiment of the present application, by providing the first sub-sound generating portion 221, the second sub-sound generating portion 222, and the third sub-sound generating portion 223, the first sub-sound generating portion 221, the second sub-sound generating portion 222, and the third sub-sound generating portion 223 are all electrically connected to the controller, the first sub-sound generating portion 221 faces the first sound outlet 11, the second sub-sound generating portion 222 faces the first sound outlet gap 41, and the third sub-sound generating portion 223 faces the second sound outlet gap 1021, so that the controller can control the first sub-sound generating portion 221, the second sub-sound generating portion 222, and the third sub-sound generating portion 223 to generate sound, so that the electronic apparatus can generate sound directionally.

Fig. 18 shows a flowchart of a sound control method according to an embodiment of the present application, where the sound control method is applied to the electronic device in any one of the foregoing embodiments, as shown in fig. 18, and the method includes:

step 1801: and according to the state of the electronic equipment, controlling any one of the first sub-sound-emitting part, the second sub-sound-emitting part and the third sub-sound-emitting part to emit sound so as to make the electronic equipment emit sound directionally.

The electronic device may be in different states, for example, the electronic device is placed on a desktop, the display screen faces away from the desktop, and the rear cover contacts the desktop, for example, the electronic device is in a talking state.

In addition, in the embodiment of the application, the electronic equipment comprises a shell and a display screen, wherein the shell comprises a rear cover and a middle frame, the rear cover is connected with one side of the middle frame, and the display screen is connected with the other side of the middle frame. The back cover and the middle frame are provided with a second sound outlet gap, the second fixing plate is provided with a third sound outlet hole, the third sound outlet hole is communicated with the second sound outlet gap, the display screen and the middle frame are provided with a first sound outlet gap, the first side wall of the middle frame is connected with a first fixing plate and a second fixing plate, the first fixing plate is provided with a second sound outlet hole, the second sound outlet hole is communicated with the first sound outlet gap, the sound production part comprises a first sound production part and a second sound production part, the first sound production part faces the first sound outlet hole, and the second sound production part faces the second sound outlet hole. In some implementations, the implementation of step 1801 may be: when the electronic device is in the first state, the first sub-sound generating part is controlled to generate sound, the second sub-sound generating part is controlled to generate an inverted sound signal with the opposite phase to that of the first sub-sound generating part, and the third sub-sound generating part is controlled to generate an inverted sound signal with the opposite phase to that of the first sub-sound generating part, so that the sound generated by the first sub-sound generating part is counteracted when being transmitted to the first sound generating gap and the second sound generating gap, and the sound generated by the first sub-sound generating part is generated from the first sound generating Kong Chuanchu. Under the condition that the electronic equipment is in a second state, the second sub-sounding part is controlled to sound, the first sub-sounding part is controlled to sound an inverted sound signal with the opposite phase to that of the second sub-sounding part, the third sub-sounding part is controlled to sound an inverted sound signal with the opposite phase to that of the second sub-sounding part, so that when the sound emitted by the second sub-sounding part is transmitted to the first sounding hole and the second sounding gap, the sound emitted by the second sub-sounding part is counteracted, and the sound emitted by the second sub-sounding part is transmitted from the first sounding gap. Under the condition that the electronic equipment is in a third state, the third sub-sounding part is controlled to sound, the first sub-sounding part is controlled to sound an inverted sound signal with the opposite phase to that of the third sub-sounding part, the second sub-sounding part is controlled to sound an inverted sound signal with the opposite phase to that of the third sub-sounding part, so that when the sound emitted by the third sub-sounding part is transmitted to the first sound outlet and the first sound outlet gap, the sound emitted by the third sub-sounding part is counteracted, and the sound emitted by the third sub-sounding part is transmitted from the second sound outlet gap.

When the electronic device is in the first state, that is, the electronic device is in the sounding state, at this time, the sound Kong Chuyin can be emitted from the first sound Kong Chuyin on the middle frame, so that the sounding effect of the electronic device is better. The second state of the electronic device can be a state that the electronic device dials a call, at this time, when the user dials a call by using the electronic device, the ear of the user is close to the first sound outlet gap at the display screen, so that the sound is only emitted from the first sound outlet gap, the sound leakage of the electronic device is avoided, and the conversation quality of the electronic device can be improved. The third state may be a state in which the electronic device makes a call and the back cover of the electronic device is close to the head of the user. At this time, the sound of the third sub-sound generating part can be only transmitted from the second sound generating gap, so that when a user dials a call by using the electronic device, the back of the electronic device is attached to the ear of the user, and the electronic device can still normally generate sound, so that the functions of the electronic device are diversified. That is, the electronic device can play sound not only from the first play gap at the display screen, but also from the second play gap of the rear cover.

In addition, a fourth sound outlet hole is formed in the second side wall and/or the third side wall of the middle frame, the second side wall is opposite to the third side wall, the first side wall is located between the second side wall and the third side wall, the first side wall is connected with the second side wall and the third side wall respectively, the sound generating part further comprises a fourth sub sound generating part and a fifth sub sound generating part, the fourth sub sound generating part faces the fourth sound outlet hole in the second side wall, and the fifth sub sound generating part faces the fourth sound outlet hole in the third side wall. In some implementations, the implementation of step 1801 may be: when the electronic device is in the first state, the first sub-sound generating part is controlled to generate sound, the second sub-sound generating part is controlled to generate an inverted sound signal with the opposite phase to that of the first sub-sound generating part, the third sub-sound generating part is controlled to generate an inverted sound signal with the opposite phase to that of the first sub-sound generating part, and the fourth sub-sound generating part and/or the fifth sub-sound generating part are controlled to generate an inverted sound signal with the opposite phase to that of the first sub-sound generating part, so that the sound generated by the first sub-sound generating part is counteracted when being transmitted to the first sound generating gap, the second sound generating gap and the fourth sound generating hole, and the sound generated by the first sub-sound generating part is counteracted by the first sound generating Kong Chuanchu.

When the electronic device is in the first state, the sound of the first sub-sound emitting part can be emitted from the first sound emitting part Kong Chuanchu, so that the sound emitted by the electronic device has a directional effect, a user can receive the sound of the electronic device in one direction only, and the sound leakage of the electronic device can be avoided.

In addition, in the embodiment of the application, the second sub-sound generating part can be controlled to generate sound according to actual needs, and the first sub-sound generating part, the third sub-sound generating part, the fourth sub-sound generating part and the fifth sub-sound generating part generate opposite-phase sound signals with opposite phases of the sound signals of the second sub-sound generating part, so that the electronic equipment can generate sound in a directional manner. The third sub-sounding part can be controlled to sound, and the other sub-sounding parts can be controlled to sound signals with the opposite phases to the sound signals of the third sub-sounding part. The fourth sub-sounding part can be controlled to sound, and the other sub-sounding parts can be controlled to sound signals with the opposite phases to the sound signals of the fourth sub-sounding part. The fifth sub-sounding part can be controlled to sound, and the other sub-sounding parts can be controlled to sound signals with the opposite phases to the sound signals of the fifth sub-sounding part.

In practical application, the user can set the sounding part of the sounding part according to the actual requirement of the user, and then the electronic equipment can receive the unused instruction, so that the electronic equipment can directionally sound in the preset direction. For example, the electronic device may be caused to sound only from the first sound outlet Kong Chuyin, and for another example, the electronic device may be caused to sound only from the first sound outlet gap.

It should be noted that, in the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described as different from other embodiments, and identical and similar parts between the embodiments are all enough to be referred to each other.

While alternative embodiments to the embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following appended claims be interpreted as including alternative embodiments and all such alterations and modifications as fall within the scope of the embodiments of the present application.

Finally, it is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or terminal. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude that an additional identical element is present in an article or terminal device comprising the element.

While the foregoing has been described in some detail by way of illustration of the principles and embodiments of the present application, and in accordance with the principles and implementations of the present application, those of ordinary skill in the art will readily recognize that there could be variations to the principles and implementations of the present application and, therefore, should not be construed as limited to the embodiments set forth herein.

Claims (10)

1. An electronic device, the electronic device comprising: the device comprises a shell, a digital loudspeaker, a display screen and a controller;

the shell comprises a middle frame and a rear cover, and the rear cover is connected with one side of the middle frame; the display screen is connected with the other side of the middle frame, a first sound outlet gap is formed between the display screen and the middle frame, a first sound outlet hole is formed in the middle frame, and a second sound outlet gap is formed between the middle frame and the rear cover;

the digital loudspeaker and the controller are both positioned in the shell, the digital loudspeaker comprises a fixing part and a sound generating part, the fixing part is connected with the sound generating part, the sound generating part comprises a first sub sound generating part, a second sub sound generating part and a third sub sound generating part, the first sub sound generating part, the second sub sound generating part and the third sub sound generating part are all electrically connected with the controller, the first sub sound generating part faces the first sound outlet hole, the second sub sound generating part faces the first sound outlet gap, and the third sub sound generating part faces the second sound outlet gap; the controller is used for controlling at least one of the first sub-sound-emitting part, the second sub-sound-emitting part and the third sub-sound-emitting part to emit sound according to the state of the electronic equipment so as to enable the electronic equipment to emit sound in a directional mode.

2. The electronic device according to claim 1, wherein the first sound outlet is provided in the first side wall of the middle frame, a first sealing member is provided in the housing, the fixing portion, the first sealing member and an inner wall of the housing form a sealing accommodating cavity, the first sub sound emitting portion is located in the sealing accommodating cavity, the first sound outlet is communicated with the sealing accommodating cavity, and the first sub sound emitting portion faces the first sound outlet, so that sound emitted by the first sub sound emitting portion is emitted from the first sound outlet Kong Chuanchu.

3. The electronic device of claim 2, wherein a first fixed plate and a second fixed plate are connected to the first side wall, the first fixed plate and the second fixed plate are both located in the housing, the first fixed plate is opposite to the second fixed plate, a space between the first fixed plate and the second fixed plate is in communication with the first sound outlet, and the digital speaker is located between the first fixed plate and the second fixed plate;

the fixed part is respectively in sealing connection with the first fixed plate and the second fixed plate through the first sealing piece, and the first sealing piece, the fixed part, the first fixed plate, the second fixed plate and the first side wall form a sealed accommodating cavity.

4. The electronic device of claim 3, wherein the first fixed plate is proximate to the display screen, the second fixed plate is distal from the display screen, a fourth seal is disposed between the display screen and the first fixed plate, the fourth seal sealing a gap between the display screen and the first fixed plate;

the first fixed plate is provided with a second sound outlet hole, the second sound outlet hole is opposite to the first sound outlet gap, the second sound outlet hole is communicated with the first sound outlet gap, and the second sub-sound producing part faces to the second sound outlet hole.

5. The electronic device according to claim 3, wherein a fifth seal is provided in the housing, the fifth seal being located between the rear cover and the second fixing plate, the fifth seal sealing a gap between the rear cover and the second fixing plate;

the second fixing plate is provided with a third sound outlet hole, the third sound outlet hole is opposite to the second sound outlet gap, the third sound outlet hole is communicated with the second sound outlet gap, and the third sub sound producing part faces to the third sound outlet hole.

6. The electronic device according to claim 2, wherein a fourth sound outlet is provided on a second side wall and/or a third side wall of the middle frame, the second side wall is opposite to the third side wall, the first side wall is located between the second side wall and the third side wall, and the first side wall is connected with the second side wall and the third side wall respectively;

The space between the first fixing plate and the second fixing plate is communicated with the fourth sound outlet;

a second sealing element and/or a third sealing element are/is arranged in the shell, the second sealing element is arranged in the gaps between the first fixing plate and the second side wall, and the third sealing element is arranged in the gaps between the first fixing plate and the third side wall;

the sound generating part further comprises a fourth sub sound generating part and a fifth sub sound generating part, the fourth sub sound generating part and the fifth sub sound generating part are electrically connected with the controller, the fourth sub sound generating part faces to the fourth sound outlet hole on the second side wall, and the fifth sub sound generating part faces to the fourth sound outlet hole on the third side wall.

7. The electronic device of any one of claims 1-6, wherein a sixth seal is disposed in the housing, the sixth seal being located in the housing and between the sound emitting portion and the first sound outlet and surrounding the first sound outlet, the sixth seal sealing a gap between the sound emitting portion and the housing.

8. A sound control method, characterized by being applied to the electronic device of any one of claims 1-7, the method comprising:

and according to the state of the electronic equipment, controlling any one of the first sub-sound-emitting part, the second sub-sound-emitting part and the third sub-sound-emitting part to emit sound so as to make the electronic equipment emit sound directionally.

9. The sound control method according to claim 8, wherein controlling any one of the first sub-sound-emitting portion, the second sub-sound-emitting portion, and the third sub-sound-emitting portion to sound the electronic device in a directional manner according to a state of the electronic device, comprises:

when the electronic equipment is in a first state, controlling the first sub-sound generating part to generate sound, controlling the second sub-sound generating part to generate an inverted sound signal with the opposite sound phase to the first sub-sound generating part, and controlling the third sub-sound generating part to generate an inverted sound signal with the opposite sound phase to the first sub-sound generating part so that the sound generated by the first sub-sound generating part is counteracted when being transmitted to the first sound generating gap and the second sound generating gap, and the sound generated by the first sub-sound generating part is counteracted when being generated from the first sound generating Kong Chuanchu;

When the electronic equipment is in a second state, controlling the second sub-sounding part to sound, controlling the first sub-sounding part to sound in opposite phase to the sound of the second sub-sounding part, controlling the third sub-sounding part to sound in opposite phase to the sound of the second sub-sounding part, so that the sound emitted by the second sub-sounding part is counteracted when being transmitted to the first sound emitting hole and the second sound emitting gap, and the sound emitted by the second sub-sounding part is emitted from the first sound emitting gap;

controlling the third sub-sound generating part to generate sound and controlling the first sub-sound generating part to generate an inverted sound signal with the opposite phase to the sound of the third sub-sound generating part and controlling the second sub-sound generating part to generate an inverted sound signal with the opposite phase to the sound of the third sub-sound generating part under the condition that the electronic equipment is in the third state, so that the sound emitted by the third sub-sound emitting part is counteracted when being transmitted to the first sound emitting hole and the first sound emitting gap, and the sound emitted by the third sub-sound emitting part is emitted from the second sound emitting gap.

10. The sound control method according to claim 8, wherein the first sound outlet is provided on a first side wall of the middle frame, a fourth sound outlet is provided on a second side wall and/or a third side wall of the middle frame, the second side wall is opposite to the third side wall, the first side wall is located between the second side wall and the third side wall, the first side wall is connected with the second side wall and the third side wall respectively, the sound generating part further comprises a fourth sub sound generating part and a fifth sub sound generating part, the fourth sub sound generating part faces the fourth sound outlet on the second side wall, and the fifth sub sound generating part faces the fourth sound outlet on the third side wall;

And controlling any one of the first sub-sounding part, the second sub-sounding part and the third sub-sounding part to sound according to the state of the electronic equipment so as to make the electronic equipment sound directionally, and further comprising:

when the electronic device is in the first state, the first sub-sound generating part is controlled to generate sound, the second sub-sound generating part is controlled to generate an inverted sound signal with the opposite phase to that of the first sub-sound generating part, the third sub-sound generating part is controlled to generate an inverted sound signal with the opposite phase to that of the first sub-sound generating part, and the fourth sub-sound generating part and/or the fifth sub-sound generating part are controlled to generate an inverted sound signal with the opposite phase to that of the first sub-sound generating part, so that the sound generated by the first sub-sound generating part is counteracted when being transmitted to the first sound generating gap, the second sound generating gap and the fourth sound generating hole, and the sound generated by the first sub-sound generating part is counteracted from the first sound generating Kong Chuanchu.