CN214177486U

CN214177486U - Sound guiding device and bar-shaped sound box with same

Info

Publication number: CN214177486U
Application number: CN202022894343.0U
Authority: CN
Inventors: 王欢; 沈宏亮
Original assignee: Shenzhen 3Nod Digital Technology Co Ltd
Current assignee: Pingxiang Zhilian Chuang Technology Co ltd; Shenzhen 3Nod Digital Technology Co Ltd
Priority date: 2020-12-03
Filing date: 2020-12-03
Publication date: 2021-09-10
Anticipated expiration: 2030-12-03

Abstract

The utility model belongs to the technical field of stereo set, a lead sound device and have this lead sound device's bar stereo set is related to, including first lateral wall, top fender wall, bottom fender wall and the second lateral wall that forms the sound chamber jointly, be provided with the target loudspeaker on the first lateral wall, the second lateral wall is smooth curved surface fender wall, and this lead sound device is through the combined action of top fender wall, bottom fender wall and curved surface fender wall to the sound wave that spreads in the target loudspeaker, finally makes it spread from two not relative accent in the sound chamber of leading, avoids the high frequency decay; this bar stereo set is through going out the sound channel of loudspeaker for the side all the way with main sound channel and this two way sound channels of surround sound channel down-mixing, and the rethread above-mentioned leading sound device is adjusted the direction of propagation of the sound wave that goes out loudspeaker from the side, simultaneously through the sound channel that goes out loudspeaker of top sound channel and this two way sound channels of bass sound channel down-mixing for the top loudspeaker all the way to this reduces the quantity of loudspeaker, reduces the complexity of audio amplifier design, and the surround around of promotion sound is felt.

Description

Sound guiding device and bar-shaped sound box with same

Technical Field

The utility model relates to a stereo set technical field especially relates to a lead sound device and have this bar stereo set that leads sound device.

Background

Soundbar refers to a strip-shaped sound system in which the sound functions of a plurality of sound channels are integrated in one cabinet. The sound channels in the conventional Soundbar are provided with independent cavities, so that good isolation and separation degree can be kept, the sound channels are different from the traditional sound equipment in use, are usually transversely arranged, and are mainly matched with flat-panel televisions, such as liquid crystal televisions, plasma televisions and the like.

In the prior art, in order to reduce the number of sound channels, left and right surround sound channels are usually mixed into left and right main sound channels to produce sound forwards, but because of the length limitation and the phase position restriction of Soundbar, the left and right surround surrounding feeling is difficult to form, and the space feeling of listening sound is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solves current bar stereo set and is difficult to form the technical problem of surrounding around the sense of encirclement about sound when reducing sound channel quantity.

In order to solve the technical problem, an embodiment of the utility model provides a sound guide device has adopted following technical scheme:

the sound guide device comprises a body, wherein the body comprises a first side wall, a top baffle wall, a bottom baffle wall and a second side wall which jointly form a sound guide cavity;

the first side wall is provided with a target loudspeaker, the second side wall is a smooth curved surface baffle wall, and the curved surface baffle wall faces to one cavity opening of the sound guide cavity and is connected with one side of the first side wall; the top retaining wall is connected with the first side wall and the top of the curved retaining wall, and the bottom retaining wall is connected with the first side wall and the bottom of the curved retaining wall;

the reflection angle and the phase of the sound wave transmitted from the target loudspeaker can be adjusted in the sound guide cavity under the combined action of the top blocking wall, the bottom blocking wall and the curved surface blocking wall.

In some embodiments, the curved baffle wall has a length and a curvature designed according to a high frequency upper limit of the primary channel and a caliber of the target horn; the length direction of the curved surface baffle wall is the same as the propagation direction of the air flow in the target loudspeaker.

In some embodiments, the curved baffle wall is concave in a direction away from the mouth of the sound guide cavity.

In order to solve the technical problem, an embodiment of the utility model provides a bar stereo set has adopted following technical scheme:

the bar-shaped sound box comprises a hollow bar-shaped box body and the sound guide device, wherein the sound guide device is arranged on the left side wall and the right side wall of the box body;

the bar-shaped sound box also comprises a top loudspeaker, a middle loudspeaker, a side-out loudspeaker and an audio post-processing device, wherein the top loudspeaker is arranged on the top of the box body, and a sound channel of the top loudspeaker can be mixed into sound waves transmitted from a top sound channel and a bass sound channel through the audio post-processing device; the middle loudspeaker is arranged on the front wall of the box body and is used for transmitting sound waves transmitted through the middle sound channel; the side-out loudspeaker is arranged on the corresponding first side wall of the sound guide device, and the sound channel of the side-out loudspeaker can mix in sound waves transmitted from the corresponding main sound channel and the corresponding surround sound channel through the audio post-processing device.

In some embodiments, the bass sound waves in the main channel, the corresponding surround channel and the center channel are extracted through low pass and attenuation processing, and can be mixed into the channel of the top speaker through the audio post-processing device as sound waves coming out of the bass channel.

In some embodiments, the audio post-processing device includes a digital signal processing device disposed on the cabinet, and the digital signal processing device is configured to control a beam radiation direction of the sound wave transmitted by the sound channel of each of the side-out speakers.

In some embodiments, a first speaker mesh is disposed in front of the side-out speaker, an opening direction of a sound-guiding grille in the first speaker mesh is the same as a transmission direction of sound waves transmitted by a sound channel of the side-out speaker, and an aperture ratio in the first speaker mesh is greater than or equal to 50%.

In some embodiments, a second speaker mesh is disposed in front of the center speaker, an opening direction of a sound guiding grille in the second speaker mesh is the same as a transmission direction of sound waves transmitted by a sound channel of the side-out speaker, and an aperture ratio in the second speaker mesh is greater than or equal to 50%.

In some embodiments, the sound emission direction of the top horn is 90 ° from the sound emission direction of the center horn.

In some embodiments, there are 2 top horns, 1 mid horn, and 2 side-out horns.

Compared with the prior art, the embodiment of the utility model provides a lead sound device and have this bar stereo set that leads sound device mainly has following beneficial effect:

the sound guide device finally transmits sound waves transmitted from a target loudspeaker out of two cavity openings which are not opposite to each other through the combined action of the top retaining wall, the bottom retaining wall and the curved retaining wall, so that the problem that the existing horn is seriously attenuated in high frequency is avoided;

the bar sound of adopting this leading sound device is through being mixed down into the sound channel of the loudspeaker of inclining all the way by audio frequency post processing apparatus with two way sound channels of main sound channel and surround the sound channel, and the propagation direction of the sound wave that the above-mentioned leading sound device of rethread was come out the loudspeaker from inclining is adjusted to this quantity that not only can reduce multichannel loudspeaker, can also improve full frequency directive property, expand the sound field of advancing out and inclining out.

Meanwhile, the bar-shaped sound box downwards mixes the top sound channel and the bass sound channel into the sound channel of the top loudspeaker through the audio frequency post-processing device, and can radiate a top sound field and a bass sound field through the top full-frequency loudspeaker, so that the complexity of sound box design is reduced, and the requirement of multichannel radiation can be met by fewer loudspeakers.

Drawings

In order to illustrate the solution of the present invention more clearly, the drawings needed for describing the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts. Wherein:

fig. 1 is a schematic perspective view of a sound guide device according to an embodiment of the present invention, wherein the sound guide device is a side-out speaker, and a top blocking wall is removed;

fig. 2 is a schematic perspective view of a bar-shaped sound box with the sound guide device according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of the acoustic structure of the top horn of FIG. 2;

fig. 4 is a block diagram of the audio post-processing of the bar stereo according to an embodiment of the present invention.

The reference numbers in the drawings are as follows:

10. a bar-shaped sound box;

100. a sound guide device; 110. a body; 111. a first side wall; 112. a top retaining wall; 113. a bottom retaining wall; 114. a second sidewall/curved barrier; 120. a sound conducting cavity; 130. a target horn;

200. a box body; 300. a top horn; 400. a loudspeaker is arranged in the middle; 500. the horn is arranged at the side.

Detailed Description

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs; the terminology used herein in the description is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention, for example, the terms "length," "width," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. refer to an orientation or position illustrated in the drawings, which are for convenience of description only and are not to be construed as limiting of the present disclosure.

The terms "including" and "having," and any variations thereof, in the description and claims of this invention and the description of the above figures are intended to cover non-exclusive inclusions; the terms "first," "second," and the like in the description and in the claims, or in the drawings, are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order. The meaning of "plurality" is two or more unless specifically limited otherwise.

In the description and claims of the present invention and in the description of the above figures, when an element is referred to as being "fixed" or "mounted" or "disposed" or "connected" to another element, it can be directly or indirectly located on the other element. For example, when an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element.

Furthermore, reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

It should be noted that the sound guide device 100 is mainly used for adjusting the transmission direction of the sound wave transmitted from the sound channel from the side direction, and may be used in the bar audio 10, and may also be used in other devices requiring sound transmission.

An embodiment of the present invention provides a sound guiding device 100, as shown in fig. 1 to 3, the sound guiding device 100 includes a body 110, the body 110 includes a first sidewall 111, a top blocking wall 112, a bottom blocking wall 113 and a second sidewall 114, wherein the first sidewall 111, the top blocking wall 112, the bottom blocking wall 113 and the second sidewall 114 are formed with a sound guiding cavity 120.

As shown in fig. 1, the first side wall 111 is provided with a target horn 130 (e.g., a side-out horn 500 in fig. 2). The second side wall 114 is a smooth curved blocking wall 114, and the curved blocking wall 114 faces one opening of the sound cavity 120 and is connected with one side of the first side wall 111. Specifically, the curved blocking wall 114 faces the front opening of the sound guide cavity 120, i.e. the curved blocking wall 114 is the rear wall of the sound guide cavity 120; the target horn 130 faces the side port of the sound leading cavity 120 (e.g., the left target horn 130 faces the left port, and the right target horn 130 faces the right port).

As shown in fig. 1 and 2, a top blocking wall 112 (not shown in fig. 1) is connected to the top of the first sidewall 111 and the curved blocking wall 114, and a bottom blocking wall 113 is connected to the bottom of the first sidewall 111 and the curved blocking wall 114. Specifically, in the present embodiment, the top blocking wall 112 and the bottom blocking wall 113 are disposed opposite and parallel to each other, and the wall surface areas of the two are the same, but the wall surface areas of the two may also be set to be different according to actual needs. The reflection angle and phase of the sound wave from the target speaker 130 can be adjusted in the sound guide cavity 120 by the combined action of the top blocking wall 112, the bottom blocking wall 113 and the curved blocking wall 114.

It should be noted that, the sound guiding device 100 in the embodiment of the present invention is similar to the horn design, but different from the horizontal and vertical symmetrical design of the horn, the sound guiding device 100 can transmit the sound wave from the target horn 130 through the combined action of the top blocking wall 112, the bottom blocking wall 113 and the curved blocking wall 114, and finally transmit the sound wave from two non-opposite mouths of the sound guiding cavity 120, without the phenomenon that the sound wave fronts in the horn are mutually overlapped due to the same sound phase, the sound pressure level in the axial direction is maximum, which causes the sound frequency, especially the high frequency, in the off-axis direction of the horn to be seriously attenuated, that is, the sound guiding device 100 avoids the problem that the existing horn is seriously attenuated in high frequency, and the sound wave from the target horn 130 can be designed according to the specific angle through the principle that the sound phases of the sound wave in the sound guiding device 100 are mutually asymmetrically and mutually overlapped, reflected, refracted, and the like, so as to ensure that the sound wave coming out from the target horn 130 can change the radiation direction of the beam through the surface of the smoothly curved blocking wall 114 according to the specific angle And furthermore, the full-frequency directivity is improved, and the front-out sound field and the side-out sound field are expanded.

In order to make the technical solution of the present invention better understood, the technical solution of the embodiment of the present invention will be clearly and completely described below with reference to fig. 1 to 3.

In some embodiments, as shown in fig. 1 and 3, the curved baffle wall 114 has a length and a radian, wherein the length L and the radian α are designed according to the upper limit of the high frequency of the main channel of the target loudspeaker 130 and the caliber of the target loudspeaker 130, and the length direction of the curved baffle wall 114 is the same as the propagation direction of the airflow in the target loudspeaker 130. It is understood that, in the present embodiment, the curved shape and size of the curved baffle wall 114 are mainly calculated according to parameters of the target speaker 130 such as caliber and performance.

In some embodiments, as shown in fig. 1-3, curved baffle wall 114 is concave away from the mouth of sound conducting chamber 120. Of course, in practice, the curved wall 114 may be a convex wall, or other suitable curved wall, as desired.

Based on foretell leading sound device 100, as shown in fig. 2, the embodiment of the present invention further provides a bar stereo 10, wherein, bar stereo 10 includes box 200 and foretell leading sound device 100, wherein, box 200 is hollow, the box 200 of bar, and all is provided with leading sound device 100 on the left side wall of box 200 and the right side wall. That is, the present bar sound 10 is provided with at least two sound guide devices 100.

As further shown in fig. 2, the bar sound 10 further includes a top speaker 300, a center speaker 400, a side-out speaker 500, and an audio post-processing device (not shown), wherein the top speaker 300 is disposed on the top of the cabinet 200, and the sound channel of the top speaker 300 can mix the sound waves coming from the top channel and the bass channel through the audio post-processing device. That is, as shown in fig. 4, to reduce the channels, the two channels, the top channel and the bass channel, may be mixed down by the audio post-processing device into a single channel of the independent top speaker 300. Thus, if the top speaker 300 is a full-range speaker, the top sound field and the bass sound field can be radiated through the top speaker 300, so that the complexity of the design of the sound box can be reduced, and the requirement of multi-channel radiation can be met by using fewer speakers.

As further shown in fig. 2, the center speaker 400 is disposed on the front wall of the box 200 for transmitting sound waves transmitted through the center channel. The side-out speaker 500 is disposed on the first sidewall 111 of the corresponding sound guiding device 100, and the sound channel of the side-out speaker 500 can mix in the sound wave coming out from the corresponding main sound channel and the corresponding surround sound channel through the audio post-processing device. That is, as shown in fig. 4, to reduce the channels, the two channels, the main channel and the surround channel, may be mixed down by the audio post-processing device into a single channel of independent side-out speakers 500. In addition, after the two sound channels are combined into one, the sound wave coming out from the sound channel corresponding to the side-out loudspeaker 500 can improve the full-frequency directivity and reduce the high-frequency attenuation by adjusting the sound wave propagation direction through the sound guide device 100, and the sound fields in the front-out and side-out can be expanded, so that the left-right surrounding sense of the sound can be improved.

It should be noted that, in the present embodiment, the bar sound 10 adopts a 3.0.2 channel design, that is, the bar sound 10 has no independent bass channel, and only has 5 independent channels, specifically, the top speakers 300 are provided with 2, the center speakers 400 are provided with 1, and the side-out speakers 500 are provided with 2. As shown in fig. 4, the 5 channels of the bar sound 10 can be independent channels of a multi-channel sound source (e.g. 7.1.2 channel design) which is down-mixed by an algorithm after decoding. Of course, the bar sound 10 may also adopt other suitable sound channel design forms, and each sound channel may also be obtained from other forms of multi-channel sound sources through processing such as decoding.

In summary, compared with the prior art, the bar sound 10 has at least the following beneficial effects: the bar-shaped sound box 10 can meet the requirement of multi-channel decoding and belongs to a sound product with the function of multi-channel decoding. Specifically, the bar-shaped sound box 10 mixes the two sound channels, i.e. the main sound channel and the surround sound channel, downward by the audio post-processing device into one sound channel of the side-out speaker 500, and then effectively adjusts the propagation direction of the sound wave transmitted from the side-out speaker 500 through the sound guiding device 100 by adding the side-out sound guiding device 100, so that not only the number of multi-channel speakers can be reduced, but also the full-frequency directivity can be improved, and the front-out and side-out sound fields can be expanded.

Meanwhile, the bar-shaped sound box 10 mixes the top sound channel and the bass sound channel downwards into the sound channel of the top loudspeaker 300 by the audio frequency post-processing device, so that the top sound field and the bass sound field are radiated by the top full-frequency loudspeaker, the complexity of loudspeaker box design is reduced, and the requirement of multichannel radiation can be met by fewer loudspeakers.

In some embodiments, as shown in fig. 4, bass sound waves in the main channel, the corresponding surround channel, and the center channel are low-pass and attenuated, and then extracted as sound waves in the bass channel, and then mixed by the audio post-processing device down into the channel of the top speaker 300. It will be appreciated that the bar sound 10 may be virtually devoid of a dedicated bass channel, wherein bass sound waves may be extracted directly from sound waves propagating in the main, surround and center channels for mixing into the sound channel passing through the top horn 300. It is also understood that in the present embodiment, not only the processing of the direct sound source but also the processing of the ambient sound source is included when the down-mixing is performed by the audio post-processing device.

In some embodiments, the audio post-processing device includes a digital signal processing device (not shown) disposed on the cabinet 200, wherein the digital signal processing device is configured to control a beam radiation direction of the sound wave transmitted by the sound channel of each side-out speaker 500, that is, the sound wave output by the sound channel of the side-out speaker 500 changes a reflection angle and a phase through the sound guide device 100, and the digital signal processing device of the audio post-processing device can be used to control the beam radiation direction, so as to improve a high frequency passing rate, which is beneficial to improving a left-right surround feeling of sound.

In some embodiments, in order to protect the side-out speaker 500, a first speaker mesh (not shown) is disposed in front of the side-out speaker 500, wherein an opening direction of a sound guiding grille in the first speaker mesh is the same as a transmission direction of a sound wave transmitted by a sound channel of the side-out speaker 500, or the opening direction of the first speaker mesh is consistent with a transmission direction of an air flow in a corresponding side-out speaker 500, and an opening ratio in the first speaker mesh is greater than or equal to 50%, so that it is ensured that no significant attenuation is generated to a high frequency as much as possible, and an attenuation amount is maintained at ± 1dB as much as possible.

In some embodiments, for protecting the center speaker 400, a second speaker mesh (not shown) is disposed in front of the center speaker 400, wherein the opening direction of the sound guiding grille in the second speaker mesh is the same as the transmission direction of the sound wave transmitted by the sound channel of the side-out speaker 500, or the opening direction of the second speaker mesh is consistent with the propagation direction of the air flow in the center speaker 400, and the aperture ratio in the second speaker mesh is greater than or equal to 50%. Therefore, the high-frequency attenuation can be ensured to be avoided as much as possible, and the attenuation is kept within +/-1 dB as much as possible.

In some embodiments, the sound emitting direction of the top speaker 300 is 90 ° to the sound emitting direction of the center speaker 400, so that the sound wave emitted from the top speaker 300 can be refracted through a plane such as a roof or a ceiling, which is beneficial to improving the surrounding sense of the sound as a whole.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A sound guide device is characterized by comprising a body, wherein the body comprises a first side wall, a top baffle wall, a bottom baffle wall and a second side wall which jointly form a sound guide cavity;

2. The sound guide apparatus of claim 1, wherein the curved baffle wall has a length and a curvature designed according to an upper high frequency limit of the main sound channel and a caliber of the target horn; the length direction of the curved surface baffle wall is the same as the propagation direction of the air flow in the target loudspeaker.

3. The sound guide device of claim 2, wherein the curved baffle wall is concave in a direction away from the mouth of the sound guide chamber.

4. A bar sound, characterized in that the bar sound comprises a hollow bar-shaped box body and the sound guide device of any one of claims 1 to 3, wherein the sound guide device is arranged on the left side wall and the right side wall of the box body;

5. Bar sound as claimed in claim 4, wherein bass sound waves in the main channel, the corresponding surround channel and the center channel are low-pass and attenuated to extract sound waves as outgoing sound waves in the bass channel, and are mixed into the channel of the top speaker by the audio post-processing device.

6. Bar sound as claimed in claim 5, wherein the audio post-processing means comprises digital signal processing means disposed on the cabinet for controlling the beam radiation direction of sound waves transmitted by the acoustic channels of each of the side-out horns.

7. Bar sound of claim 4, wherein a first speaker mesh is arranged in front of the side-out speaker, the opening direction of the sound-guiding grille in the first speaker mesh is the same as the transmission direction of sound waves transmitted by the sound channel of the side-out speaker, and the opening ratio in the first speaker mesh is greater than or equal to 50%.

8. Bar sound of claim 4, wherein a second speaker mesh is disposed in front of the center speaker, the opening direction of the sound guiding grille in the second speaker mesh is the same as the transmission direction of the sound wave transmitted by the sound channel of the side-out speaker, and the opening ratio in the second speaker mesh is greater than or equal to 50%.

9. Bar sound as claimed in claim 4, wherein the direction of sound production of the top horn is 90 ° to the direction of sound production of the center horn.

10. Bar sound as claimed in claim 4, wherein there are 2 top horns, 1 center horn and 2 side-out horns.