CN116405838A

CN116405838A - Sound display integrated device and sound image distance adjusting method

Info

Publication number: CN116405838A
Application number: CN202310579827.1A
Authority: CN
Inventors: 姬雅倩; 李倩岩; 王雷; 曹永刚; 勾越; 韩艳玲; 冉建清
Original assignee: BOE Technology Group Co Ltd
Current assignee: BOE Technology Group Co Ltd
Priority date: 2023-05-22
Filing date: 2023-05-22
Publication date: 2023-07-07

Abstract

The invention relates to a sound display integrated device, comprising: a display screen; a speaker array provided on at least one side of the display screen in a circumferential direction of the display screen, the speaker array including a plurality of speaker units arranged in a first direction parallel to an extending direction of a corresponding side of the display screen; and the adjusting driving structure is used for selectively driving at least one loudspeaker unit in at least one loudspeaker array so as to adjust the pointing angle of sound beams emitted by the loudspeaker array and further adjust the sound image distance perceived by the sound receiving points. The invention also relates to a sound image distance adjusting method.

Description

Sound display integrated device and sound image distance adjusting method

Technical Field

The invention relates to the technical field of loudspeaker arrays, in particular to a sound display integrated device and a sound image distance adjusting method.

Background

At present, in a home theater, a loudspeaker is mainly used for 3D audio playback, sound boxes are arranged around a viewer, for example, 5.1 channels are used for arrangement, 3D audio playback is realized by matching with an audio algorithm, and the sound boxes are complex in arrangement.

Disclosure of Invention

In order to solve the technical problems, the invention provides a sound display integrated device and a sound image distance adjusting method, which simplify the structure of a sound box.

In order to achieve the above purpose, the technical scheme adopted by the embodiment of the invention is as follows: a sound display integrated device comprising:

a display screen;

at least one speaker array provided on at least one side of the display screen in a circumferential direction of the display screen, the speaker array including a plurality of speaker units arranged in a first direction parallel to an extending direction of a corresponding side of the display screen;

and the adjusting driving structure is used for selectively driving at least one loudspeaker unit in at least one loudspeaker array so as to adjust the pointing angle of sound beams emitted by the loudspeaker array and further adjust the sound image distance perceived by the sound receiving points.

Optionally, the sound beam includes a direct sound portion and a reverberant sound portion;

the adjusting driving structure is used for adjusting the number or the positions of the loudspeaker units in the gating state so as to adjust the proportion between the direct sound part and the reverberant sound part, and then adjust the sound image distance perceived by the sound receiving points.

Optionally, when the ratio of the direct sound part to the reverberant sound part is within a first preset ratio threshold, the sound image is located between the display screen and the sound receiving point;

when the ratio of the direct sound part to the reverberant sound part is within a second preset ratio threshold, the sound image is positioned on the display screen;

when the ratio of the direct sound part to the reverberant sound part is within a third preset ratio threshold, the sound image is positioned on one side of the display screen away from the sound receiving point;

the first preset proportion threshold value is larger than the second preset proportion threshold value, and the second preset proportion threshold value is larger than the third preset proportion threshold value.

Optionally, along the first direction, the total length of all the plurality of speaker units in the gating state is unchanged, the distance between two adjacent speaker units is gradually increased, and the ratio of the direct sound part to the reverberant sound part is gradually reduced.

Alternatively, the interval between two adjacent speaker units is changed as the number or positions of the speaker units in the gating state are changed.

Alternatively, the total number of the speaker units in the gating state is constant, the interval between two adjacent speaker units is gradually increased, and the ratio of the direct sound portion to the reverberant sound portion is gradually increased.

Optionally, a distance between two adjacent speaker units is smaller than or equal to a wavelength of the sound beam, and a distance between two adjacent speaker units is larger than or equal to a length of the speaker units in the first direction.

Optionally, the display screen comprises at least two speaker arrays located on different sides of the display screen, wherein the at least two speaker arrays comprise a first speaker array and a second speaker array, the first speaker array comprises a plurality of first speaker units, and the second speaker array comprises a plurality of second speaker units;

the adjusting driving structure comprises a first driving unit and a second driving unit, wherein the first driving unit is used for selectively driving at least one first loudspeaker unit in the first loudspeaker array, so that the first loudspeaker unit in a gating state emits a first sound beam, and the second driving unit is used for selectively driving at least one second loudspeaker unit in the second loudspeaker array, so that the second loudspeaker unit in the gating state emits a second sound beam, and the first sound beam and the second sound beam interfere with each other to synthesize the sound beam with preset directivity.

Optionally, the first speaker array and the second speaker array are located on opposite sides of the display screen.

Optionally, the display screen further comprises a frame surrounding the periphery of the display screen, the frame is covered on the speaker array, and a plurality of sound outlet holes corresponding to the speaker units one to one are formed in the frame, so that a plurality of speakers radiate sound through the corresponding sound outlet holes.

The embodiment of the invention also provides a sound image distance adjusting method which is realized by adopting the sound display integrated device, and the method comprises the following steps:

and selectively driving at least one loudspeaker unit in at least one loudspeaker array to adjust the pointing angle of sound beams emitted by the loudspeaker array, thereby adjusting the perceived sound image distance of the sound receiving points.

Optionally, the sound beam includes a direct sound portion and a reverberant sound portion; the method specifically comprises the following steps:

along the first direction, the total length of all the plurality of speaker units in the gating state is unchanged, and the distance between two adjacent speaker units is gradually increased, so that the ratio of the direct sound part to the reverberant sound part is gradually reduced.

the total number of the speaker units in the gating state is unchanged, and the interval between two adjacent speaker units is gradually increased, so that the ratio of the direct sound portion and the reverberant sound portion is gradually increased.

The beneficial effects of the invention are as follows: according to the invention, the loudspeaker array is arranged on at least one side of the display screen, at least one loudspeaker unit in at least one loudspeaker array is selectively driven by adjusting the driving structure, and the pointing angle of sound beams emitted by the loudspeaker array is adjusted by changing the number or the positions of the loudspeaker units in a gating state and the like, so that the sound image distance perceived by a sound receiving point can be adjusted, the audio-visual experience is improved by matching with images displayed by the display screen, and the loudspeaker array is arranged on the plane where the display screen is positioned.

Drawings

Fig. 1 is a schematic diagram showing the structure of an audio display integrated device according to an embodiment of the present invention;

FIG. 2 shows a schematic diagram of a speaker array in an embodiment of the invention;

FIG. 3 shows a schematic view of the states of the direct sound section and reverberant sound section in an embodiment of the present invention;

FIG. 4 is a schematic view of beam directivity in an embodiment of the invention;

FIG. 5 is a schematic diagram showing the directivity of sound beams according to an embodiment of the present invention;

FIG. 6 is a schematic diagram showing the relative positional relationship among an audio image, a display screen and audio receiving points in an embodiment of the present invention;

FIG. 7 is a schematic diagram of a speaker unit selected in a speaker array according to an embodiment of the present invention;

FIG. 8 is a schematic diagram II of a speaker unit selected in a speaker array according to an embodiment of the present invention;

fig. 9 shows a third schematic diagram of a speaker unit selected in a speaker array according to an embodiment of the present invention;

fig. 10 shows a schematic view of beam directivity corresponding to fig. 7;

FIG. 11 is a schematic view of the beam directivity corresponding to FIG. 8;

fig. 12 is a schematic view of beam directivity corresponding to fig. 9;

FIG. 13 shows a polar plot of beam directivity for a line array;

FIG. 14 shows a polar plot of beam directivity for a line array II;

FIG. 15 shows a polar plot of beam directivity for a line array;

fig. 16 shows a polar plot of beam directivity for a line array;

FIG. 17 is a graph five showing the polar coordinates of beam directivity for a line array;

fig. 18 shows a schematic diagram of a speaker unit selected in a speaker array according to an embodiment of the present invention;

fig. 19 is a schematic diagram showing a speaker unit selected in a speaker array according to an embodiment of the present invention;

fig. 20 shows a schematic diagram of a speaker unit selected in a speaker array according to an embodiment of the present invention;

FIG. 21 shows a polar plot of beam directivity for a line array;

fig. 22 shows a polar graph seven of beam directivity of a line array;

fig. 23 shows a polar plot eight of beam directivity for a line array;

fig. 24 shows a polar graph nine of beam directivity of a line array;

fig. 25 shows a polar graph of beam directivity of a line array.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. It will be apparent that the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments, which can be made by one of ordinary skill in the art without the need for inventive faculty, are within the scope of the present disclosure, based on the described embodiments of the present disclosure.

Unless defined otherwise, technical or scientific terms used in this disclosure should be given the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The terms "first," "second," and the like, as used in this disclosure, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Likewise, the terms "a," "an," or "the" and similar terms do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.

Referring to fig. 1-2, the present embodiment provides an integrated device for sound display, including:

a display screen 1;

at least one speaker array 2, the speaker array 2 being provided on at least one side of the display screen 1 in a circumferential direction of the display screen 1, the speaker array 2 including a plurality of speaker units 21 arranged in a first direction (refer to an X direction in fig. 1) parallel to an extending direction of a corresponding side of the display screen 1;

and the adjusting driving structure is used for selectively driving at least one loudspeaker unit 21 in at least one loudspeaker array 2 so as to adjust the pointing angle of sound beams emitted by the loudspeaker array 2 and further adjust the sound image distance perceived by the sound receiving points.

According to the sound display integrated device of the embodiment, at least one speaker unit 21 in at least one speaker array 2 is selectively driven by adjusting the driving structure, and the pointing angle of sound beams emitted by the speaker array 2 is adjusted by changing the number or the positions of the speaker units 21 in a gating state, so that the sound image distance perceived by a sound receiving point can be adjusted, and the audio-visual experience is improved by matching with images displayed by the display screen 1.

According to the sound display integrated device provided by the embodiment, the loudspeaker array 2 is arranged on at least one side of the display screen 1, and the loudspeaker array 2 is arranged on the plane where the display screen 1 is arranged, so that compared with a traditional 5.1-channel three-dimensional arrangement scheme, the sound box arrangement is simpler, the integrated integration with the display screen 1 screen is realized, and the sound display integrated device is used for the consumer electronics fields of desktop display/notebook computer/TV and the like without complex sound box arrangement.

Note that, each of the speaker units 21 may be controlled individually or may be controlled as a whole, and is not limited thereto.

Under the reverberation environment, the direct mixing ratio is one of key factors influencing the perception of the sound image distance, and the direct mixing ratio concept is as follows: the ratio of the direct sound energy reaching the sound receiving point and the reverberant sound energy (the energy reaching the sound receiving point after multiple reflections & absorption by the reflecting surface). Referring to fig. 3, there are direct sound and reverberant sound between the occurrence position 10 and the sound receiving point 20, the direct mixing ratio is large, the sound is more clear, the sound image distance is short, and the direct mixing ratio is small, and the corresponding sound image distance is long.

Referring to fig. 4, reference numeral 3 indicates a simulation graph indicating sound directivity, reference numeral 4 indicates a position of a sound receiving point, and the sound beam directivity formed by the speaker array 2 is strong, so that less sound energy is radiated to the wall, so that almost all sound reaching the human ear (i.e., the sound receiving point) is direct sound, at this time, the direct mixing ratio is very large, the human ear perceives that the sound image is very close, i.e., the sound image is between the display screen 1 and the human ear (i.e., is an out-screen sound image), and is closer to the position of the human ear (i.e., the sound image is more out-screen distance).

Referring to fig. 5, reference numeral 3 indicates a simulation graph indicating sound directivity, reference numeral 4 indicates a position of a sound receiving point, but when the sound beam directivity formed by the speaker array 2 is weak, that is, the sound beam is wide or there is a strong side lobe, most of the sound energy radiates to the wall and reaches the human ear through the wall surface, at this time, the sound energy reaching the human ear has a large reverberant sound in addition to the direct sound, the direct mixing ratio is low, the human ear perceives that the sound image is far away, that is, the sound image is behind the screen (that is, the screen-in sound image), and the smaller the direct mixing ratio is, the far away the sound image is.

A schematic diagram of the relationship between the out-of-screen sound image 100, the in-screen sound image 300, the on-screen sound image 200 (i.e., the sound image is located on the display screen 1) and the display screen 1, the human ear (i.e., the sound receiving point 4) is shown in fig. 6. The sound image is positioned between the display screen 1 and the sound receiving points, and is an output sound image; the sound image is positioned on the display screen 1, and then is an on-screen sound image; the sound image is located at one side of the display screen 1 far away from the sound receiving point, namely the on-screen sound image.

In fig. 6, the relative positional relationship among the display panel 1, the sound image, and the sound receiving point in the direction perpendicular to the display panel 1 is shown.

In summary, the pointing angle of the sound beam emitted by the speaker array 2 may be used to adjust the ratio between the direct sound portion and the reverberant sound portion included in the sound beam, so as to adjust the perceived image distance of the sound receiving point. While the angle of the sound beam emitted from the speaker array 2 is adjusted, the number or position of the speaker units 21 in the gating state may be adjusted by the adjusting driving structure through the holes, but not limited thereto, and for example, the gain of the speaker units 21 in the gating state may be adjusted.

And if the ratio of the direct sound part to the reverberant sound part is different, the positions of the corresponding sound images are different, and the sound image distances perceived by the listening receiving points are different. In an exemplary embodiment, when the ratio of the direct sound part to the reverberant sound part is within a first preset ratio threshold, the sound image is located between the display screen 1 and the sound receiving point;

when the ratio of the direct sound part to the reverberant sound part is within a second preset ratio threshold, the sound image is positioned on the display screen 1;

when the ratio of the direct sound part to the reverberant sound part is within a third preset ratio threshold, the sound image is positioned on one side of the display screen 1 away from the sound receiving point;

It should be noted that, the greater the ratio between the direct sound portion and the reverberant sound portion, the closer the sound image position is to the sound receiving point, i.e. the closer the sound image distance perceived by the sound receiving point is; the smaller the ratio of the direct sound portion and the reverberant sound portion, the farther the sound image position is from the sound receiving point, i.e., the farther the perceived sound image distance is from the sound receiving point.

The first preset threshold, the second preset threshold, and the third preset threshold are set in relation to a distance between the sound receiving point and the display screen 1, and when the distance between the sound receiving point and the display screen 1 is large, the thickness of the display screen 1 is negligible.

The ratio of the direct sound part to the reverberant sound part is adjusted by changing the number of speaker units 21 in the gating state, the position information, and other parameter information, so as to adjust the sound distance perceived by the sound receiving point, and various specific adjustment modes are available, and several adjustment modes in the present embodiment are described below.

In the exemplary embodiment, the total length of all the plurality of speaker units 21 in the gating state is constant along the first direction, the interval between the adjacent two speaker units 21 is gradually increased, and the ratio of the direct sound portion and the reverberant sound portion is gradually decreased.

Referring to fig. 7 to 9, exemplary speaker units 21 in a gating state include a head speaker unit 211, a tail speaker unit 212, and an intermediate speaker unit located between the head speaker unit 211 and the tail speaker unit 212 in the first direction, and the total length of all the plurality of speaker units 21 in the gating state may be constant, and positions of the head speaker unit 211 and the tail speaker unit 212 may be constant, and a distance between adjacent two of the speaker units 21 may be changed by changing the number or position information of the intermediate speaker units.

In fig. 7-9, a solid circle indicates that the speaker unit 21 is in a gating state, a hollow circle indicates that the speaker is in a non-gating state, along the first direction, the first speaker unit 21 in each speaker array 2 is a head speaker unit 211 that is gated, the last speaker unit 21 in each speaker array 2 is a tail speaker unit 212 that is gated, in fig. 7, all speaker units 21 in each speaker array 2 are all in a gating state, in fig. 8, only one speaker unit 21 is in a gating state between the head speaker unit 211 and the tail speaker, and in fig. 9, the speaker units 21 in a gating state between the head speaker unit 211 and the tail speaker are zero, i.e. the number of intermediate speaker units in a gating state is zero.

Fig. 10 is a form of an acoustic beam formed by the gated speaker unit 21 in fig. 7, fig. 11 is a form of an acoustic beam formed by the gated speaker unit 21 in fig. 8, and fig. 12 is a form of an acoustic beam formed by the gated speaker unit 21 in fig. 9. Obviously, on the basis that the total length of all the plurality of speaker units 21 in the gating state in fig. 7 to 9 is unchanged in the first direction, but the interval between the adjacent two of the speaker units 21 in fig. 7 to 9 is changed, in contrast to fig. 10 to 12, on the basis that the total length of all the plurality of speaker units 21 in the gating state in fig. 7 to 9 is unchanged in the first direction, as the interval between the adjacent two of the speaker units 21 is increased, the ratio of the direct sound portion and the reverberant sound portion is gradually reduced, the directivity of the sound beam is gradually reduced, and the sound image distance perceived by the sound receiving point is gradually increased.

Illustratively, the spacing between adjacent two of the speaker units 21 is less than or equal to the wavelength of the sound beam, and the spacing between adjacent two of the speaker units 21 is greater than or equal to the length of the speaker unit 21 in the first direction.

Fig. 13 to 17 show a graph of the directivity of the sound beam obtained by simulation at a frequency of 500 Hz. The pitch of the adjacent two gating speaker units 21 in fig. 13 is 1/10 of the wavelength of the sound beam, the pitch of the adjacent two gating speaker units 21 in fig. 14 is 1/4 of the wavelength of the sound beam, the pitch of the adjacent two gating speaker units 21 in fig. 15 is 1/2 of the wavelength of the sound beam, the pitch of the adjacent two gating speaker units 21 in fig. 16 is 3/4 of the wavelength of the sound beam, and the pitch of the adjacent two gating speaker units 21 in fig. 17 is one time of the wavelength of the sound beam. Fig. 13 to 17, when the interval between adjacent two speaker units 21 is equal to 1/10 of the wavelength of the sound beam, the sound beam directivity is the sharpest, corresponds to the outgoing sound image, and the outgoing distance is the farthest (i.e., the sound image is the closest to the sound receiving point); when the interval between the adjacent two speaker units 21 is equal to one time of the wavelength of the sound beam, the sound beam has almost no directivity, the acoustic energy is most diffused, the incoming sound image is corresponding, and the incoming distance is farthest (i.e., the sound image is farthest from the sound receiving point).

Note that, if the total length of all the speaker units 21 in the gating state is unchanged, that is, the distance between the head speaker unit 211 and the tail speaker unit 212 in the gating state is unchanged, the positions of the head speaker unit 211 and the tail speaker unit 212 may be selected to be unchanged, or the speaker units 21 in the gating state may be integrally shifted in the first direction, and then the distance between the two adjacent speaker units 21 may be adjusted.

It should be noted that, the pointing angle of the sound beam may be adjusted by changing the gain of the speaker unit 21 in the gating state, and the pointing angle of the sound beam may be shifted to the position where the speaker with a relatively large sound pressure is located, for example, a side lobe in the sound beam may be enhanced, and a main lobe in the sound beam may be weakened, so that the direct-mixing ratio may be changed.

In an exemplary embodiment, the interval between two adjacent speaker units 21 is changed by changing the number or positions of the speaker units 21 in the gating state.

Referring to fig. 18 to 20, a solid circle represents that the speaker unit 21 is in a gating state, a hollow circle represents that the speaker is in a non-gating state, the total number of the speaker units 21 in the gating state is constant, the interval between two adjacent speaker units 21 is gradually increased, and the ratio of the direct sound portion to the reverberant sound portion is gradually increased.

In fig. 18 to 20, the number of speaker units 21 in the gating state in each speaker array 2 is the same, and there are 4 speaker units 21 in the gating state, but it is apparent that the pitch of the adjacent two speaker units 21 in fig. 19 is larger than the pitch of the adjacent two speaker units 21 in fig. 18, and the pitch of the adjacent two speaker units 21 in fig. 20 is larger than the pitch of the adjacent two speaker units 21 in fig. 19, in the first direction. Correspondingly, the interval between two adjacent speaker units 21 changes, and the total length of all the speaker units 21 in the gating state changes accordingly. That is, the total length of all the speaker units 21 in the gating state increases as the interval between the adjacent two speaker units 21 increases, and the directivity of the corresponding sound beam increases as the interval between the adjacent two speaker units 21 increases.

Fig. 21 to 25 show polar graphs of the directivity of the acoustic beam obtained by simulation at a frequency of 500 Hz. The pitch of the adjacent two gating speaker units 21 in fig. 21 is 1/10 of the wavelength of the sound beam, the pitch of the adjacent two gating speaker units 21 in fig. 22 is 1/4 of the wavelength of the sound beam, the pitch of the adjacent two gating speaker units 21 in fig. 23 is 1/2 of the wavelength of the sound beam, the pitch of the adjacent two gating speaker units 21 in fig. 24 is 3/4 of the wavelength of the sound beam, and the pitch of the adjacent two gating speaker units 21 in fig. 25 is one time of the wavelength of the sound beam. Fig. 21 to 25, when the interval between the adjacent two speaker units 21 is equal to 1/10 of the wavelength of the sound beam, the sound beam has almost no directivity, the sound energy is most diffused, corresponding to the incoming sound image, and the incoming distance is farthest (i.e., the sound image is farthest from the sound receiving point), and when the interval between the adjacent two speaker units 21 is equal to 3/4 of the wavelength of the sound beam, the sound beam directivity is sharpest, corresponding to the outgoing sound image, and the outgoing distance is farthest (i.e., the sound image is closest to the sound receiving point).

In some embodiments, when the number of speaker units 21 in the gating state is not changed, the distance between two adjacent speaker units 21 and the beam directivity are not always in a proportional state, and the correlation between the distance between two adjacent speaker units 21 and the beam directivity is related to parameters such as the number of speaker units 21 in the gating state and the total length of the speaker units 21 in the gating state. As can be taken from fig. 21 to 25, for example, when the number of speaker units 21 in the gating state is unchanged, the interval between the adjacent two speaker units 21 cannot be excessively large, the directivity of the sound beam increases first as the interval between the adjacent two speaker units 21 increases, then the interval between the adjacent two speaker units 21 continues to increase, and the directivity of the sound beam decreases.

It should be noted that only one speaker array 2 may be disposed around the display screen 1, that is, only one side of the display screen 1 may be provided with the speaker array 2, or a plurality of speaker arrays 2 may be disposed, that is, speaker arrays 2 may be disposed on different sides of the display screen 1. In fig. 7 to 9, in fig. 18 to 20, a speaker array 2 is disposed on opposite sides of the display 1, but not limited thereto.

In fig. 7 to 9, one speaker array 2 is provided on each of opposite sides of the display 1 in fig. 18 to 20, and the directivities of the sound beams formed by the two speaker arrays 2 may be the same or different.

It should be noted that, in fig. 7 to fig. 9, and fig. 18 to fig. 20, one speaker array 2 is disposed on each of opposite sides of the display screen 1, and the relevant parameter information of the speaker units 21 in the gating state in the two speaker arrays 2 may be identical or different, or may be partially identical, for example, in fig. 7 to fig. 9, and fig. 18 to fig. 20, the number and the position information of the speaker units 21 in the gating state in the two speaker arrays 2 are identical, but not limited thereto.

It should be noted that, one speaker array 2 may be disposed on the same side of the display screen 1, or a plurality of speaker arrays 2 may be disposed, and the arrangement of the plurality of speaker arrays 2 may make the adjustment accuracy of the sound beam directivity higher.

Referring to fig. 7 to 9, and fig. 18 to 20, the sound display integrated device includes at least two speaker arrays 2 positioned at different sides of the display screen 1, at least two speaker arrays 2 including a first speaker array including a plurality of first speaker units and a second speaker array including a plurality of second speaker units;

The first speaker units in the first speaker array can be controlled independently or integrally, and the second speaker units in the second speaker array can be controlled independently or integrally.

The number of the first speaker units in the gating state, the position information, and other parameters may be the same as or different from the number of the second speaker units in the gating state, or may be partially the same as or different from the number of the second speaker units in the gating state.

In the exemplary embodiment, the first speaker array and the second speaker array are located at opposite sides of the display screen 1, but not limited thereto.

In an exemplary embodiment, the integrated sound display device further includes a frame 11 surrounding the periphery of the display screen 1, the frame 11 is covered on the speaker array 2, and a plurality of sound outlets corresponding to the speaker units 21 one to one are disposed on the frame 11, so that a plurality of speakers radiate sound through the corresponding sound outlets.

at least one speaker unit 21 in at least one speaker array 2 is selectively driven to adjust the pointing angle of the sound beam emitted by the speaker array 2, thereby adjusting the perceived sound image distance of the sound receiving point.

Specifically, the sound beam includes a direct sound portion and a reverberant sound portion; the method specifically comprises the following steps:

along the first direction, the total length of all the plurality of speaker units 21 in the gating state is unchanged, and the interval between the adjacent two speaker units 21 is gradually increased, so that the ratio of the direct sound portion and the reverberant sound portion is gradually reduced.

the total number of the speaker units 21 in the gating state is unchanged, and the interval between the adjacent two speaker units 21 is gradually increased so that the ratio of the direct sound portion and the reverberant sound portion is gradually increased.

Specifically, when the ratio of the direct sound part to the reverberant sound part is within a first preset ratio threshold, the sound image is located between the display screen 1 and the sound receiving point;

It is to be understood that the above embodiments are merely illustrative of the application of the principles of the present invention, but not in limitation thereof. Various modifications and improvements may be made by those skilled in the art without departing from the spirit and substance of the invention, and are also considered to be within the scope of the invention.

Claims

1. An audio display integrated device, comprising:

a display screen;

2. The sound display integrated device of claim 1, wherein the sound beam includes a direct sound portion and a reverberant sound portion;

3. The sound display integrated device of claim 2, wherein,

when the ratio of the direct sound part to the reverberant sound part is within a first preset ratio threshold, the sound image is positioned between the display screen and the sound receiving point;

4. The sound display integrated device according to claim 2, wherein a total length of all the plurality of speaker units in the gating state is constant in the first direction, a spacing between adjacent two of the speaker units is gradually increased, and a ratio of the direct sound portion and the reverberant sound portion is gradually decreased.

5. The sound display integrated apparatus according to claim 4, wherein a spacing between adjacent two of the speaker units varies as the number or positions of the speaker units in the gating state vary.

6. The sound display integrated device according to claim 2, wherein a total number of the speaker units in the gating state is constant, a spacing between adjacent two of the speaker units is gradually increased, and a ratio of the direct sound portion and the reverberant sound portion is gradually increased.

7. The sound display integrated device according to claim 2, wherein a pitch between adjacent two of the speaker units is smaller than or equal to a wavelength of the sound beam, and a pitch between adjacent two of the speaker units is larger than or equal to a length of the speaker units in the first direction.

8. The sound display integrated device of claim 2, comprising at least two of the speaker arrays on different sides of the display screen, the at least two speaker arrays comprising a first speaker array comprising a plurality of first speaker units and a second speaker array comprising a plurality of second speaker units;

9. The sound display integrated device of claim 8, wherein the first speaker array and the second speaker array are located on opposite sides of the display screen.

10. The sound display integrated device according to claim 1, further comprising a frame surrounding the periphery of the display screen, wherein the frame is covered on the speaker array, and a plurality of sound outlet holes corresponding to the speaker units one by one are provided on the frame, so that the plurality of speakers radiate sound through the corresponding sound outlet holes.

11. A sound image distance adjustment method, characterized in that it is implemented by the sound display integration device according to any one of claims 1 to 10, said method comprising the steps of:

12. The sound image distance adjustment method according to claim 11, wherein the sound beam includes a direct sound portion and a reverberant sound portion; the method specifically comprises the following steps:

13. The sound image distance adjustment method according to claim 11, wherein the sound beam includes a direct sound portion and a reverberant sound portion; the method specifically comprises the following steps:

14. The sound image distance adjusting method according to claim 12 or 13, wherein,