CN116528109A - Electronic device and resonance frequency point correction method - Google Patents

Abstract

The disclosure provides an electronic device and a resonance frequency point correction method, comprising a loudspeaker and an acoustic waveguide, wherein the acoustic waveguide is arranged at a position corresponding to a sound outlet of the loudspeaker, an inlet of the acoustic waveguide is matched with the sound outlet of the loudspeaker, and the acoustic waveguide is suitable for increasing a propagation path of acoustic waves to adjust the resonance frequency point of the loudspeaker. The acoustic waveguide can improve the audio frequency feeling of the loudspeaker, and the user experience is improved.

Description

Electronic device and resonance frequency point correction method

Technical Field

The disclosure relates to the technical field of speakers, and in particular relates to an electronic device and a resonance frequency point correction method corresponding to the electronic device.

Background

The speaker is an electroacoustic device for converting an electric signal into an acoustic signal, and is provided with micro speakers on electronic devices such as mobile phones and flat plates, but the low-frequency sensitivity of the micro speakers of the electronic devices in the related art is low, and the audio frequency experience is poor due to different resonance frequency points of the stacking design sensitivity among a plurality of micro speakers, so that the user experience is reduced.

Disclosure of Invention

In the related art, in order to realize the light, thin and miniaturized design of electronic equipment, most of speakers on the electronic equipment are micro speakers, the low-frequency response and the low-frequency sounding efficiency of the micro speakers are poor, and the audio frequency experience is poor and the user experience is reduced due to different resonance frequency points of stacking design sensitivity among a plurality of micro speakers.

The present disclosure aims to solve, at least to some extent, one of the technical problems in the related art.

Therefore, the embodiment of the disclosure provides an electronic device, and the acoustic waveguide of the electronic device can improve the audio frequency feeling of a loudspeaker, thereby improving the user experience.

The embodiment of the disclosure also provides a resonant frequency point correction method of the electronic equipment.

The electronic device of the embodiment of the disclosure comprises: a speaker; the sound wave guide is arranged at a position corresponding to the sound outlet of the loudspeaker, the inlet of the sound wave guide is matched with the sound outlet of the loudspeaker, and the sound wave guide is suitable for increasing the propagation path of sound waves to adjust the resonance frequency point of the loudspeaker.

The acoustic waveguide of the electronic equipment can improve the audio frequency feeling of the loudspeaker and improve the user experience.

In some embodiments, the acoustic waveguide comprises a housing provided with an inner cavity, the housing provided with an inner cavity inlet adapted for acoustic waves emitted by the speaker to enter the inner cavity, and an inner cavity outlet adapted for acoustic waves to exit the inner cavity, and a divider provided in the inner cavity, the divider being adapted to confine an acoustic wave channel within the inner cavity, the acoustic wave channel being connected between the inner cavity inlet and the inner cavity outlet, the acoustic wave channel being adapted to guide acoustic wave transmission and to increase a propagation length of acoustic waves within the inner cavity.

In some embodiments, the acoustic wave channel comprises at least one first channel segment, or, alternatively, at least one first channel segment and at least one second channel segment; the sound wave propagation direction in the first channel section is opposite to the sound wave propagation direction in the second channel section, the first channel section is communicated with the second channel section, and at least one first channel section and at least one second channel section are alternately arranged between the inner cavity inlet and the inner cavity outlet.

In some embodiments, the inner cavity of the housing has a first cavity wall and a second cavity wall, the first cavity wall and the second cavity wall are oppositely arranged, the partition has a plurality of partitions, the partition includes a first component disposed on the first cavity wall and a second component disposed on the second cavity wall, the first component and the second component are alternately arranged between the inner cavity inlet and the inner cavity outlet to separate a first channel section and a second channel section in the acoustic wave channel, and gaps are formed between the first component and the second cavity wall, and between the second component and the first cavity wall for communicating the first channel section and the second channel section.

In some embodiments, the resonant frequency f of the acoustic waveguide is obtained by the following formula:

wherein: f is the resonant frequency; n is the order of resonance; c is the speed of sound; l is the total length of the acoustic wave channel; n is the total number of the first channel sections and the second channel sections; a is the length dimension of the first channel section or the length dimension of the second channel section; b is the width dimension of the first channel section or the width dimension of the second channel section; d is the spacing of the first component from the second cavity wall or the spacing of the second component from the first cavity wall; w is the width dimension of the first component or the width dimension of the second component.

In some embodiments, the spacer is made of ABS plastic or metal.

In some embodiments, the low frequency acoustic impedance of the acoustic waveguide matches the low frequency acoustic impedance of the speaker.

The resonant frequency point correction method of the embodiment of the disclosure comprises the following steps:

determining a front cavity resonant frequency of the speaker;

the propagation path length of the acoustic wave in the acoustic waveguide is adjusted according to the front cavity resonance frequency and the target resonance frequency of the speaker.

In some embodiments, the target resonant frequency is less than an original resonant frequency of the speaker in the electronic device for enhancing speaker low frequency sensitivity.

The electronic device of the embodiment of the disclosure comprises:

a plurality of speakers;

the sound wave guide is suitable for increasing the propagation path of sound waves to adjust the resonance frequency points of the corresponding loudspeakers, and the resonance frequency points of the frequency response curves of the outlets of at least two sound wave guide are consistent.

In some embodiments, the plurality of speakers includes a first speaker adapted to a top of the electronic device and a second speaker disposed at a bottom of the electronic device.

The resonant frequency point correction method of the embodiment of the disclosure comprises the following steps:

determining front cavity resonant frequencies of the plurality of speakers;

and determining the propagation path length of the sound wave in the corresponding sound wave guide according to the differences of the front cavity resonant frequencies of the plurality of loudspeakers.

Drawings

Fig. 1 is an exploded schematic view of an acoustic waveguide of an embodiment of the present disclosure.

Fig. 2 is a schematic diagram of the acoustic wave channel of the acoustic waveguide of fig. 1.

Fig. 3 is a schematic diagram of the resonant frequency calculation parameters of the acoustic waveguide of the present disclosure.

Fig. 4 is a schematic diagram of an electronic device of an embodiment of the present disclosure.

Fig. 5 is a schematic diagram of an electronic device of another embodiment of the present disclosure.

Fig. 6 is a frequency-sensitivity curve versus schematic diagram of an embodiment of the present disclosure.

Fig. 7 is a flowchart of a method of resonant frequency point correction according to one embodiment of the present disclosure.

Fig. 8 is a flowchart of a method of resonant frequency point correction according to another embodiment of the present disclosure.

Reference numerals:

an acoustic waveguide 100; a first acoustic waveguide 101; a second sound wave guide 102;

a housing 1; a first closing plate 11; a first shroud 12; a first section 121; a second section 122; a second shroud 13; a third section 131; a fourth section 132; a second closure plate 14; an acoustic wave channel 15; a first channel segment 151; a second channel segment 152; a lumen inlet 16; a lumen outlet 17;

a partition member 2; a first member 21; a second part 22;

an electronic device 200.

Detailed Description

Embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings, are described in detail below. The embodiments described below by referring to the drawings are exemplary and intended for the purpose of explaining the present disclosure and are not to be construed as limiting the present disclosure.

As shown in fig. 1 to 6, the electronic device 200 of the embodiment of the present disclosure includes a speaker and an acoustic waveguide 100, and the electronic device 200 may be a mobile phone, a tablet, a notebook, or the like.

The speaker may be a micro speaker, the acoustic waveguide 100 is disposed at a position corresponding to an outlet of the speaker, and an inlet of the acoustic waveguide 100 is matched with the outlet of the speaker, that is, the acoustic waveguide 100 is communicated with the outlet of the speaker. The acoustic waveguide 100 can increase the propagation path of the acoustic wave in a limited space, so that the tuning of the resonance frequency point of the speaker can be achieved.

According to the electronic device, the acoustic waveguide 100 of the electronic device can increase the propagation path of the acoustic wave in the limited space, and the length of the propagation path and the resonance frequency are in a negative correlation relationship, so that the acoustic waveguide 100 can have a lower resonance frequency in the limited space, and the resonance frequency of the acoustic waveguide 100 is matched with the target resonance frequency of the micro-speaker.

As shown in fig. 6, a frequency response versus plot of a single speaker and waveguide speaker assembly (i.e., combination of speaker and acoustic waveguide 100) is established with frequency on the abscissa and sensitivity on the ordinate, and at a frequency of 400Hz, the sensitivity of the waveguide speaker assembly can be seen to be significantly higher than that of a single speaker. Therefore, the acoustic waveguide 100 can amplify low frequency, the radiation efficiency and the low frequency response sensitivity of the sound source can be enhanced through the acoustic waveguide 100, and the user experience is improved.

In some embodiments, as shown in fig. 1 to 3, the acoustic waveguide 100 includes a housing 1 and a partition 2. The housing 1 is provided with an inner cavity having an inner cavity inlet 16 and an inner cavity outlet 17, the inner cavity inlet 16 being adapted for sound waves emitted by the loudspeaker to enter the inner cavity and the inner cavity outlet 17 being adapted for sound waves to exit the inner cavity. The partition 2 is provided in the inner cavity, the partition 2 being adapted to confine an acoustic wave channel 15 in the inner cavity, the acoustic wave channel 15 being connected between an inner cavity inlet 16 and an inner cavity outlet 17, the acoustic wave channel 15 being adapted to guide acoustic wave transmission and to increase the propagation length of the acoustic wave in the inner cavity.

Specifically, the housing 1 may be rectangular parallelepiped, and in other embodiments, the housing 1 may be spherical, prismatic, or the like. The inside of the shell 1 is hollow and forms an inner cavity, the shell 1 is provided with an inner cavity inlet 16 and an inner cavity outlet 17, the inner cavity inlet 16 and the inner cavity outlet 17 are communicated with the inner cavity of the shell 1, the inner cavity inlet 16 and the inner cavity outlet 17 can be arranged on the same side face of the shell 1, and the inner cavity inlet 16 and the inner cavity outlet 17 can also be arranged on different side faces of the shell 1.

The housing 1 may be connected to a loudspeaker, wherein the cavity inlet 16 of the housing 1 may be in communication with the sound outlet of the loudspeaker, whereby sound waves generated by the loudspeaker may enter the cavity of the housing 1 via the cavity inlet 16 and may then pass out of the cavity of the housing 1 via the cavity outlet 17.

As shown in fig. 1 and 2, the partition 2 may be a partition plate, the partition 2 is disposed in an inner cavity of the housing 1 and may be integrally formed with the housing 1, the partition 2 may limit the acoustic wave channel 15 in the inner cavity of the housing 1, the acoustic wave channel 15 may be zigzag, spiral, etc., and the inner cavity inlet 16 and the inner cavity outlet 17 of the housing 1 are both communicated with the acoustic wave channel 15 and form an inlet and an outlet of the acoustic wave channel 15, respectively.

The acoustic wave channel 15 is capable of guiding the propagation path of acoustic waves on the one hand and increasing the propagation length of acoustic waves in the interior cavity of the housing 1 on the other hand, avoiding the situation that acoustic waves propagate directly from the interior cavity inlet 16 of the housing 1 to the interior cavity outlet 17 of the housing 1.

In some embodiments, acoustic wave channel 15 comprises at least one first channel segment, or, at least one first channel segment 151 and at least one second channel segment 152; wherein the direction of sound wave propagation in the first channel segment 151 is opposite to the direction of sound wave propagation in the second channel segment 152, the first channel segment 151 and the second channel segment 152 are in communication, and at least one first channel segment 151 and at least one second channel segment 152 are alternately arranged between the lumen inlet 16 and the lumen outlet 17. The specific composition of the acoustic wave channel is not specifically defined, and only the first channel may be required if the length of the first channel satisfies the requirement of the resonance point.

Specifically, as shown in fig. 2, each of the first channel section 151 and the second channel section 152 may be provided with two partitions 2, and the two partitions 2 may partition the acoustic channel 15 into two first channel sections 151 and one second channel section 152, wherein the second channel section 152 is connected between the two first channel sections 151, i.e., one of the two first channel sections 151 is located at the left side of the second channel section 152 and the other is located at the right side of the second channel section 152. The inner chamber inlet 16 of the housing 1 may be provided at the left side of the housing 1 and communicate with the first channel section 151 at the left side, and the inner chamber outlet 17 of the housing 1 may be provided at the right side of the housing 1 and communicate with the first channel section 151 at the right side. The lumen inlet 16 forms the inlet of the acoustic waveguide 100 and the lumen outlet 17 forms the outlet of the acoustic waveguide 100. The number of the separating pieces is arbitrary, so long as the requirement of the corresponding sound path of the resonance point is met.

The sound waves can first enter the first channel segment 151 on the left via the lumen inlet 16, then propagate in the second channel segment 152 and in the first channel segment 151 on the right in turn, and finally can exit via the lumen outlet 17. In the first channel segment 151, the sound wave propagates in the back-to-front direction, and in the second channel segment 152, the sound wave propagates in the front-to-back direction.

Therefore, the structure of the sound wave channel 15 is simple, the space utilization rate of the sound wave channel 15 to the inner cavity of the shell 1 can be improved, the sound wave channel 15 can have a longer length in a limited space, and the matching between the resonance frequency of the sound wave guide 100 and the resonance frequency of the low-frequency wave of the micro-speaker can be ensured.

It will be appreciated that in other embodiments, the first channel segment 151 and the second channel segment 152 may each be provided with one, and the first channel segment 151 may be provided with more than two, and the second channel segment 152 may be provided with more than two. When the first and second channel segments 151 and 152 are each provided in plurality, the plurality of first and second channel segments 151 and 152 may be alternately arranged in the left-right direction.

In some embodiments, the plurality of partitions 2 comprises a first member 21 and a second member 22, the interior cavity of the housing 1 has a first cavity wall and a second cavity wall, the first cavity wall and the second cavity wall are disposed opposite each other, one end of the first member 21 is connected to the first cavity wall, the other end of the first member 21 extends toward the second cavity wall and is spaced apart from the second cavity wall, one end of the second member 22 is connected to the second cavity wall, the other end of the second member 22 extends toward the first cavity wall and is spaced apart from the first cavity wall, and the first member 21 and the second member 22 are alternately arranged between the interior cavity inlet 16 and the interior cavity outlet 17 to separate the first channel section 151 and the second channel section 152 within the acoustic wave channel 15.

Specifically, as shown in fig. 1 and 2, the first member 21 and the second member 22 may each be provided with one, the first member 21 and the second member 22 may each be plate-shaped, the first chamber wall may be a rear chamber wall of the inner chamber, the second chamber wall may be a front chamber wall of the inner chamber, the first member 21 may extend generally in the front-rear direction, the rear end of the first member 21 may be connected to the rear chamber wall of the housing 1, and the front end of the first member 21 may be spaced apart from the front chamber wall by a certain distance. The second member 22 extends generally in the front-rear direction, and the front end of the second member 22 may be connected to the front cavity wall of the housing 1, with the rear end of the second member 22 being spaced from the rear cavity wall of the housing 1 by a certain distance. With the first part 21 being located to the left of the second part 22.

A first channel section 151 is defined between the first part 21 and the left chamber wall of the housing 1, a second channel section 152 is defined between the first part 21 and the second part 22, and a further first channel section 151 is defined between the second part 22 and the right chamber wall of the housing 1. The front end of the second channel section 152 communicates with the front end of the first channel section 151 on the left side, and the rear end of the second channel section 152 communicates with the rear end of the first channel section 151 on the right side.

The inner chamber inlet 16 of the housing 1 may be provided at the left rear side of the housing 1 and communicate with the rear end of the left first passage section 151, and the inner chamber outlet 17 of the housing 1 may be provided at the right front side of the housing 1 and communicate with the front end of the right first passage section 151. Thereby, the arrangement of the partition 2 is simplified, and it is convenient to restrict the acoustic wave channel 15 formed in a zigzag shape in the inner cavity of the housing 1.

It will be appreciated that in other embodiments, the first member 21 may be provided with more than two, the second member 22 may be provided with more than two, the plurality of first members 21 may be connected to the rear cavity wall of the housing 1, the plurality of second members 22 may be connected to the front cavity wall of the housing 1, and the plurality of first members 21 and the plurality of second members 22 may be alternately arranged in the left-right direction.

In some embodiments, the housing 1 includes a first shroud 12, a second shroud 13, a first seal plate 11, and a second seal plate 14, the first shroud 12 and the second shroud 13 are spaced apart along the circumference of the housing 1, an inner cavity inlet 16 is formed between one end of the first shroud 12 and one end of the second shroud 13, an inner cavity outlet 17 is formed between the other end of the first shroud 12 and the other end of the second shroud 13, the first shroud 12, the second shroud 13 are connected between the first seal plate 11 and the second seal plate 14, the first shroud 12, the second shroud 13, the first seal plate 11, the second seal plate 14 define an inner cavity, the first member 21 is connected to the second shroud 13, the first seal plate 11, the second seal plate 14, and the second member 22 is connected to the first shroud 12, the first seal plate 11, the second seal plate 14.

Specifically, as shown in fig. 1 and 2, the casing 1 may be separately provided, the first enclosing plate 12 and the second enclosing plate 13 may be arranged in a central symmetry, the first enclosing plate 12 may form a left cavity wall and a front cavity wall of the casing 1, the second enclosing plate 13 may form a right cavity wall and a rear cavity wall of the casing 1, the first enclosing plate 12 and the second enclosing plate 13 are arranged at intervals in a horizontal circumferential direction, and two interval spaces are formed between the first enclosing plate 12 and the second enclosing plate 13, one of the two interval spaces forms an inner cavity inlet 16 of the casing 1, and the other forms an inner cavity outlet 17 of the casing 1.

The first part 21 may be integrally formed with the second shroud 13 and the second part 22 may be integrally formed with the first shroud 12.

The first sealing plate 11 may be a plane, and the first sealing plate 11 is disposed above the first enclosing plate 12 and the second enclosing plate 13, and the top surface of the first enclosing plate 12, the top surface of the second enclosing plate 13, the top surface of the first component 21, and the top surface of the second component 22 are all connected with the lower surface of the first sealing plate 11 in a sealing manner. The second sealing plate 14 may be a plane, and the second sealing plate 14 is disposed below the first enclosing plate 12 and the second enclosing plate 13, and the bottom surface of the first enclosing plate 12, the bottom surface of the second enclosing plate 13, the bottom surface of the first component 21, and the bottom surface of the second component 22 are all in sealing connection with the upper surface of the second sealing plate 14.

Thereby, the processing of the housing 1 is facilitated, i.e. the individual components can be processed first, and then the individual components can be assembled into the housing 1. Secondly, the machining arrangement of the separator 2 is also facilitated.

In some embodiments, the first shroud 12 includes a first section 121 and a second section 122, the first section 121 and the second section 122 are angled, the second shroud 13 includes a third section 131 and a fourth section 132, the third section 131 and the fourth section 132 are angled, the first section 121 and the third section 131 are disposed opposite each other, the second section 122 and the fourth section 132 are disposed opposite each other, the lumen inlet 16 is formed between the first section 121 and the fourth section 132, the lumen outlet 17 is formed between the second section 122 and the third section 131, the first member 21 and the fourth section 132 are connected, and the second member 22 and the second section 122 are connected.

Specifically, as shown in fig. 2, the first coaming 12 is generally L-shaped, the first section 121 extends generally in the front-rear direction, the second section 122 extends generally in the left-right direction, the second coaming 13 is generally L-shaped, the third section 131 extends generally in the front-rear direction, and the fourth section 132 extends generally in the left-right direction. The first member 21 may be integrally provided with the fourth section 132 and the second member 22 may be integrally provided with the second section 122. Thereby, the integral structure formed by the first coaming 12 and the second part 22 is the same as the integral structure formed by the second coaming 13 and the first part 21, and the processing technology is further simplified.

In some embodiments, the resonant frequency f of the acoustic waveguide 100 is obtained by the following formula:

equation 1:

equation 2:

wherein: f is the resonant frequency; n is the resonance order (1, 3,5, … … odd); c is the speed of sound; l is the total length of the acoustic wave channel 15; n is the total number of first channel segments 151 and second channel segments 152; a is the length dimension of the first channel segment 151 or the length dimension of the second channel segment 152; b is the width dimension of the first channel segment 151 or the width dimension of the second channel segment 152; d is the distance between the first part 21 and the second cavity wall or the distance between the second part 22 and the first cavity wall; w is the width dimension of the first member 21 or the width dimension of the second member 22.

Specifically, as shown in fig. 3, the first channel segment 151 and the second channel segment 152 are arranged mirror symmetrically, and the length dimension (the dimension in the front-rear direction) of the first channel segment 151 and the length dimension (the dimension in the front-rear direction) of the second channel segment 152 coincide, and the width dimension (the dimension in the left-right direction) of the first channel segment 151 and the width dimension (the dimension in the left-right direction) of the second channel segment 152 coincide. The parameters of the first part 21 and the parameters of the second part 22 coincide. Therefore, the propagation lengths of the sound waves in the first channel segment 151 and the second channel segment 152 can be regarded as the same, and the total length L of the sound wave channel 15 can be estimated by calculating the propagation length of the sound waves in the first channel segment 151 or the second channel segment 152, specifically by using the hook law, and then multiplying the total number of the first channel segment 151 and the second channel segment 152. Finally, substituting the total length of the acoustic wave channel 15 into formula 1 can calculate the resonant frequency of the acoustic waveguide 100.

As shown in fig. 3, the total number N of the first channel segments 151 and the second channel segments 152 may be 3, and in other embodiments, the total number N of the first channel segments 151 and the second channel segments 152 may be 4, 5, 6, etc.

As shown in fig. 3, when the acoustic wave channel 15 is not disposed in the acoustic waveguide 100, the propagation path length of the acoustic waveguide 100 may be regarded as a distance t, where the distance t is far smaller than the total length L of the acoustic wave channel 15, and thus, the resonant frequency of the acoustic waveguide 100 disposed with the acoustic wave channel 15 is far smaller than the acoustic waveguide 100 not disposed with the acoustic wave channel 15, thereby, the resonant frequency of the acoustic waveguide 100 is matched with the target resonant frequency of the micro speaker, and user experience is improved.

The above formula can realize quantitative calculation of the resonant frequency f of the acoustic waveguide 100, thereby providing data support for parameter design of the acoustic waveguide 100.

In some embodiments, the material of the housing 1 may be metal, and the housing 1 may be regarded as a waveguide, so that the loss of the acoustic wave may be reduced.

In some embodiments, the material of the partition 2 is ABS plastic or metal, or other material that meets the hard sound field boundary. Thereby, the separation effect can be ensured.

In some embodiments, the low frequency acoustic impedance of the acoustic waveguide 100 matches the low frequency acoustic impedance of the speaker. Therefore, the low-frequency radiation efficiency can be improved, and the user experience is further improved.

The following describes a resonance frequency point correction method of an embodiment of the present disclosure.

As shown in fig. 7, the resonance frequency point correction method of the embodiment of the present disclosure includes the steps of:

a1: the front cavity resonant frequency of the speaker is determined. Specifically, for a speaker on an electronic device, an audio signal of the speaker may be recorded by using a recording device, and then the audio signal of the speaker may be analyzed and processed to obtain a corresponding front cavity resonant frequency.

A2: the propagation path length of the acoustic wave in the acoustic waveguide 100 is adjusted according to the front cavity resonance frequency of the speaker.

Wherein the target resonant frequency is less than the original resonant frequency of the speaker in the electronic device for enhancing the low frequency sensitivity of the speaker.

Specifically, as shown in fig. 3, the adjustment of the propagation path length of the acoustic wave can be achieved by adjusting the number of the first channel segment 151 and the second channel segment 152 in the acoustic waveguide 100, and when the number of the first channel segment 151 and the second channel segment 152 is larger, the number of times of turning back the acoustic wave in the acoustic waveguide 100 is larger, so that the increase of the propagation path length can be achieved. By adjusting the length of the propagation path in the sound wave, the low-frequency acoustic impedance of the sound waveguide 100 can be more matched with that of the micro-speaker, so that the low-frequency acoustic radiation efficiency of the micro-speaker can be increased, the low-frequency sensitivity of the micro-speaker is improved, and the user experience is improved.

An electronic device of another embodiment of the present disclosure is described below.

The electronic device 200 of the embodiment of the present disclosure includes a plurality of speakers and a plurality of acoustic waveguides 100, the number of acoustic waveguides being equal to or greater than the number of speakers. The plurality of acoustic waveguides 100 are arranged at positions corresponding to the sound outlets of the plurality of speakers in a one-to-one correspondence manner, the acoustic waveguides 100 are suitable for increasing the propagation paths of acoustic waves to adjust the resonance frequency points of the speakers corresponding to the acoustic waveguides, and the resonance frequency points of the frequency response curves of the outlets of at least two acoustic waveguides 100 are consistent.

As shown in fig. 5, the electronic device 200 may be a mobile phone, and the electronic device 200 may be provided with two waveguide speaker assemblies (a combination of a speaker and an acoustic waveguide 100), wherein one waveguide speaker assembly may be provided at an upper end of the mobile phone, the waveguide speaker assembly including a first speaker and a first acoustic waveguide 101, and the other waveguide speaker assembly may be provided at a lower end of the mobile phone, and the waveguide speaker assembly may include a second speaker and a second acoustic waveguide 102.

The resonance frequency points of the two waveguide speaker assemblies are the same, so that the stereo effect of the electronic device 200 can be realized, and the audio-visual experience is improved. In addition, since each speaker of the electronic device 200 is correspondingly provided with the acoustic waveguide 100, the difference of each speaker can be eliminated by adjusting the corresponding acoustic waveguide 100, and thus the problem of poor stereo effect caused by inconsistent sizes of the upper and lower speakers can be avoided, and even when the sizes of the speakers are consistent, errors of correcting each speaker can be corrected, thereby ensuring sounding quality.

It will be appreciated that in other embodiments, as shown in fig. 4, only one speaker and one acoustic waveguide 100 may be provided on the electronic device 200, and the speaker and the acoustic waveguide 100 may be provided at the lower end of the electronic device 200. In other embodiments the speakers may be provided with three, four, five, etc., as may the corresponding acoustic waveguide 100.

It should be noted that, when the speaker and the sound waveguide 100 are all provided with a plurality of speaker and sound waveguide 100, the resonance frequency point of a part of the speaker can be adjusted through the corresponding sound waveguide 100, for example, when the speaker is provided at the four edges of the electronic device 200, the resonance frequency point of the speaker at the upper edge and the lower edge can be adjusted to be consistent through the corresponding sound waveguide 100, so as to eliminate the frequency response difference of each speaker, further avoid the problem of poor stereo effect caused by inconsistent sizes of the upper speaker and the lower speaker, and realize a better stereo effect.

The following describes a resonance frequency point correction method of the embodiment of the present disclosure.

As shown in fig. 8, the resonance frequency point correction method of the embodiment of the present disclosure includes the steps of:

s1: front cavity resonant frequencies of a plurality of speakers are determined. Specifically, for a plurality of speakers on the electronic device 200, the audio signal of each speaker may be recorded by using a recording device, and then the audio signal of each speaker may be analyzed and processed to obtain a corresponding front cavity resonant frequency.

S2: the propagation path length of the acoustic wave in the corresponding acoustic waveguide 100 is determined according to the differences in the front cavity resonance frequencies of the plurality of speakers, and the purpose of adjusting the propagation path length of the acoustic wave can be achieved by adjusting the length dimension of the partition 2, for example. Specifically, as shown in fig. 5, two waveguide speaker assemblies may be provided on the electronic device 200, and the resonant frequencies of the two waveguide speaker assemblies may be corrected to be identical by adjusting the length dimension d1 of the first member 21 and the length dimension d2 of the second member 22 in the acoustic waveguide 100 at the upper end, and by adjusting the length dimension d4 of the first member 21 and the length dimension d3 of the second member 22 in the acoustic waveguide 100 at the lower end, so that it is convenient to adjust the resonant frequencies of the plurality of waveguide speaker assemblies to be identical, and the stereo effect of the electronic device 200 is ensured.

In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present disclosure.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present disclosure, the meaning of "a plurality" is at least two, such as two, three, etc., unless specifically defined otherwise.

In the present disclosure, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this disclosure will be understood by those of ordinary skill in the art as the case may be.

In this disclosure, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

Although embodiments of the present disclosure have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the present disclosure, and that variations, modifications, alternatives, and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the present disclosure.

Claims (12)

1. An electronic device, comprising:

a speaker;

the sound wave guide is arranged at a position corresponding to the sound outlet of the loudspeaker, the inlet of the sound wave guide is matched with the sound outlet of the loudspeaker, and the sound wave guide is suitable for increasing the propagation path of sound waves to adjust the resonance frequency point of the loudspeaker.

2. The electronic device of claim 1, wherein the acoustic waveguide comprises a housing and a divider, the housing having an interior cavity inlet and an interior cavity outlet, the interior cavity inlet adapted for acoustic waves emitted by the speaker to enter the interior cavity, the interior cavity outlet adapted for acoustic waves to pass out of the interior cavity, the divider disposed in the interior cavity, the divider adapted to restrict an acoustic wave path within the interior cavity, the acoustic wave path connected between the interior cavity inlet and the interior cavity outlet, the acoustic wave path adapted to direct acoustic wave transmission and increase a propagation length of acoustic waves within the interior cavity.

3. The electronic device of claim 2, wherein the acoustic wave channel comprises at least one first channel segment, or comprises at least one first channel segment and at least one second channel segment;

the sound wave propagation direction in the first channel section is opposite to the sound wave propagation direction in the second channel section, the first channel section is communicated with the second channel section, and at least one first channel section and at least one second channel section are alternately arranged between the inner cavity inlet and the inner cavity outlet.

4. The electronic device of claim 3, wherein the interior cavity of the housing has a first cavity wall and a second cavity wall, the first cavity wall and the second cavity wall are disposed opposite each other, the divider has a plurality of first members disposed on the first cavity wall and second members disposed on the second cavity wall, the first members and the second members are alternately arranged between the interior cavity inlet and the interior cavity outlet to separate a first channel section and a second channel section within the acoustic wave channel, and gaps are provided between the first members and the second cavity wall, between the second members and the first cavity wall for communicating the first channel section and the second channel section.

5. The electronic device of claim 4, wherein the resonant frequency f of the acoustic waveguide is obtained by the formula:

wherein: f is the resonant frequency; n is the order of resonance; c is the speed of sound; l is the total length of the acoustic wave channel; n is the total number of the first channel sections and the second channel sections; a is the length dimension of the first channel section or the length dimension of the second channel section; b is the width dimension of the first channel section or the width dimension of the second channel section; d is the spacing of the first component from the second cavity wall or the spacing of the second component from the first cavity wall; w is the width dimension of the first component or the width dimension of the second component.

6. The electronic device of claim 1, wherein the spacer is made of ABS plastic or metal.

7. The electronic device of claim 1, wherein a low frequency acoustic impedance of the acoustic waveguide matches a low frequency acoustic impedance of the speaker.

8. A resonance frequency point correction method based on the electronic device of any one of claims 1-7, characterized by comprising the steps of:

determining a front cavity resonant frequency of the speaker;

the propagation path length of the acoustic wave in the acoustic waveguide is adjusted according to the front cavity resonance frequency and the target resonance frequency of the speaker.

9. The method of claim 8, wherein the target resonant frequency is less than an original resonant frequency of the speaker in the electronic device for enhancing low frequency sensitivity of the speaker.

10. An electronic device, comprising:

a plurality of speakers;

the sound wave guide is suitable for increasing the propagation path of sound waves to adjust the resonance frequency points of the corresponding loudspeakers, and the resonance frequency points of the frequency response curves of the outlets of at least two sound wave guide are consistent.

11. The electronic device of claim 10, wherein the plurality of speakers comprises a first speaker and a second speaker, the first speaker being adapted to a top portion of the electronic device and the second speaker being disposed at a bottom portion of the electronic device.

12. A resonance frequency point correction method based on the electronic device of claim 10 or 11, characterized in that the resonance frequency point correction method comprises the steps of:

determining front cavity resonant frequencies of the plurality of speakers;

and determining the propagation path length of the sound wave in the corresponding sound wave guide according to the differences of the front cavity resonant frequencies of the plurality of loudspeakers.