CN215581313U

CN215581313U - Echo cancellation device of audio and video interactive system

Info

Publication number: CN215581313U
Application number: CN202122345450.2U
Authority: CN
Inventors: 刘亚军; 王志雄; 梁永宁
Original assignee: Guangzhou Suotu Intelligent Electronics Co ltd
Current assignee: Guangzhou Suotu Intelligent Electronics Co ltd
Priority date: 2021-09-27
Filing date: 2021-09-27
Publication date: 2022-01-18
Anticipated expiration: 2031-09-27

Abstract

The utility model relates to the technical field of echo cancellation devices, and discloses an echo cancellation device of an audio and video interaction system. An echo cancellation device of an audio and video interaction system comprises an echo suppressor body and a mounting plate, wherein a connecting piece is arranged at the bottom of the echo suppressor body, a movable connecting rod is hinged to the bottom of the connecting piece, and a limiting block is fixedly mounted at one end, far away from the connecting piece, of the movable connecting rod; when the echo suppressor body is fixed, the top end of the movable connecting rod is placed into the arc-shaped groove, then the knob is rotated, the wider side of the ejector block faces upwards, the limiting blocks on the left side and the right side are squeezed into the limiting groove, and therefore the suppressor body is installed.

Description

Echo cancellation device of audio and video interactive system

Technical Field

The utility model relates to the technical field of echo cancellation devices, in particular to an echo cancellation device of an audio and video interactive system.

Background

In voice communications, one factor that greatly affects call quality is echo. Echo is the phenomenon that the voice of a speaker sent to other people through a communication device returns to the receiver of the speaker. Echo can cause serious interference to the speaker and must be eliminated by a method. Generally, echoes are classified into two types, i.e., "circuit echoes" and "acoustic echoes". The "circuit echo" can be eliminated by proper design of the hardware device and will not be discussed here. The most complex and difficult to cancel should be the so-called "acoustic echo". The "acoustic echo" refers to an echo formed by the sound of the far-end user coming out of the receiver, passing through the air or other propagation medium to the microphone of the near-end user, and then being re-transmitted to the receiver of the far-end user after being recorded by the microphone. The echo is particularly obvious when the playback volume of a near-end user is relatively large and the recording device and the playback device are relatively close to each other. The "acoustic echo" is affected by the environment of the near-end user, and may generate multiple echoes, including direct echo and reflected echo, and the paths of the respective echoes are different, so that the echoes are different in delay, and thus difficult to cancel. The characteristics of echo in voice communication over the internet, the real-time transmission of voice over the internet, has its fatal weakness that the voice quality is poor, the factors affecting the voice quality over the internet are manifold, and one of the most critical factors is the influence of echo. However, currently, echo suppressors are generally used for echo suppression, the echo suppressors need to be fixed during use, the echo suppressors are generally fixed through screws when being fixed, and a special tool is needed for dismounting, which is troublesome.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an echo cancellation device of an audio and video interactive system, which achieves the aim of convenient disassembly of an echo suppressor.

In order to achieve the purpose, the utility model provides the following technical scheme: an echo cancellation device of an audio and video interaction system comprises an echo suppressor body and a mounting plate, wherein a connecting piece is arranged at the bottom of the echo suppressor body, a movable connecting rod is hinged to the bottom of the connecting piece, a limiting block is fixedly mounted at one end, far away from the connecting piece, of the movable connecting rod, an arc-shaped groove is formed in the top of the mounting plate, limiting grooves are formed in groove walls of the left side and the right side of the arc-shaped groove, a rotating rod is arranged in the middle of the arc-shaped groove and rotatably connected with the mounting plate through a bearing, a top block is sleeved on the surface of the rotating rod, a spring is arranged inside the limiting groove, one end of the spring is fixedly connected with the groove wall of the limiting groove, a groove is formed in the middle of the top of the mounting plate, a heat dissipation plate is fixedly mounted inside the groove, a heat conduction pad is arranged at the top of the heat dissipation plate, and outer fins are arranged on the side edges of the heat dissipation plate, the heat dissipation plate is characterized in that a through hole is formed in the middle of the heat dissipation plate, inner fins are arranged on the surface of the hole wall of the through hole, and a heat dissipation fan is arranged in the middle of the through hole.

Preferably, the number of the connecting pieces is two, and the two connecting pieces are fixedly installed on the left side and the right side of the bottom of the echo suppressor body respectively.

Preferably, the left side and the right side of the bottom of the connecting piece are respectively hinged with the movable connecting rod, and the size of the limiting groove is matched with that of the limiting block.

Preferably, the top and the bottom of the top block are both provided with arc-shaped edges, and the width of the upper part of the top block is larger than that of the bottom.

Preferably, the rotating rod penetrates through the front side of the mounting plate, and a knob is fixedly mounted at the front end of the rotating rod.

Preferably, the heat conduction pad is a silica gel heat conduction pad, the outer fins are uniformly distributed on the left side and the right side of the heat dissipation plate, and the inner fins are uniformly distributed on the surface of the hole wall of the through hole.

The utility model provides an echo cancellation device of an audio and video interactive system. The method has the following beneficial effects:

(1) the utility model fixedly installs two connecting pieces on the left side and the right side of the bottom of the suppressor body, the top of each connecting piece is hinged with two movable connecting rods, the bottom ends of the movable connecting rods are fixed with limit blocks, the top of the installation plate is provided with an arc-shaped groove, the middle part of the arc-shaped groove is provided with a rotatable rotating rod, the surface of the rotating rod is sleeved with a top block, and the left side and the right side of the upper part of the arc-shaped groove are provided with limit grooves, so when the echo suppressor body is fixed, the top end of the movable connecting rod only needs to be placed into the arc-shaped groove, then a knob is rotated to enable the wider side of the top block to face upwards, the limit blocks on the left side and the right side are squeezed into the limit grooves, thereby the installation of the suppressor body is completed, and meanwhile, the two limit blocks can clamp the top block by installing springs in the limit grooves, thereby ensuring the installation stability, the whole installation process is simple and convenient to operate, and the trouble of using screws for installation is avoided.

(2) The heat dissipation plate and the heat conduction pad are fixedly arranged in the middle of the top of the mounting plate, and the heat dissipation effect of the echo suppressor body can be effectively improved through the matching of the outer fins, the through holes, the inner fins and the heat dissipation fan, so that the service life of internal elements of the echo suppressor body is ensured, and the service performance of the echo suppressor body is further improved.

Drawings

FIG. 1 is a schematic front sectional view of the present invention;

FIG. 2 is a schematic view of a partial front cross-sectional structure of the present invention;

fig. 3 is a schematic top sectional view of the heat dissipating plate of the present invention.

In the figure: the acoustic echo suppressor comprises an acoustic echo suppressor body 1, a connecting piece 2, a movable connecting rod 3, a limiting block 4, a mounting plate 5, an arc-shaped groove 6, a limiting groove 7, a top block 8, a rotating rod 9, a knob 10, a spring 11, a groove 12, a heat conducting pad 13, a heat radiating plate 14, an outer fin 15, a through hole 16, an inner fin 17 and a heat radiating fan 18.

Detailed Description

As shown in fig. 1-3, the present invention provides a technical solution: an echo cancellation device of an audio and video interaction system comprises an echo suppressor body 1 and a mounting plate 5, wherein the bottom of the echo suppressor body 1 is provided with two connecting pieces 2, the two connecting pieces 2 are respectively and fixedly arranged at the left side and the right side of the bottom of the echo suppressor body 1, the bottom of the connecting piece 2 is hinged with a movable connecting rod 3, one end of the movable connecting rod 3, which is far away from the connecting piece 2, is fixedly provided with a limit block 4, the top of the mounting plate 5 is provided with an arc-shaped groove 6, the groove walls at the left side and the right side of the arc-shaped groove 6 are respectively provided with a limit groove 7, the left side and the right side of the bottom of the connecting piece 2 are respectively hinged with the movable connecting rod 3, the size of the limit groove 7 is matched with the size of the limit block 4, the middle part of the arc-shaped groove 6 is provided with a rotating rod 9, the rotating rod 9 penetrates through the front side of the mounting plate 5, the front end of the rotating rod 9 is fixedly provided with a knob 10, and the rotating rod 9 is rotatably connected with the mounting plate 5 through a bearing, the surface of the rotating rod 9 is sleeved with an ejector block 8, the top and the bottom of the ejector block 8 are both provided with arc edges, the width of the upper part of the ejector block 8 is larger than that of the bottom, a spring 11 is arranged inside a limiting groove 7, one end of the spring 11 is fixedly connected with the groove wall of the limiting groove 7, two connecting pieces 2 are fixedly arranged on the left side and the right side of the bottom of the suppressor body 1, the top of each connecting piece 2 is hinged with two movable connecting rods 3, a limiting block 4 is fixed at the bottom end of each movable connecting rod 3, an arc groove 6 is arranged at the top of the mounting plate 5, the rotating rod 9 capable of rotating is arranged in the middle of the arc groove 6, the surface of the rotating rod 9 is sleeved with the ejector block 8, and the limiting grooves 7 are arranged on the left side and the right side of the upper part of the arc groove 6, therefore, when the suppressor body 1 is fixed, only the top end of each movable connecting rod 3 needs to be placed inside the arc groove 6, then, the knob 10 is rotated to enable the wider side of the top block 8 to face upwards, the limiting blocks 4 on the left side and the right side are squeezed into the limiting groove 7, so that the installation of the suppressor body 1 is completed, meanwhile, the spring 11 is installed in the limiting groove 7, so that the two limiting blocks 4 can clamp the top block 8, the installation stability is ensured, the operation of the whole installation process is simple and convenient, and the trouble of using screws for installation is avoided, the middle part of the top part of the installation plate 5 is provided with the groove 12, the inside of the groove 12 is fixedly provided with the heat dissipation plate 14, the top part of the heat dissipation plate 14 is provided with the heat conduction pad 13, the side edge of the heat dissipation plate 14 is provided with the outer fin 15, the middle part of the heat dissipation plate 14 is provided with the through hole 16, the hole wall surface of the through hole 16 is provided with the inner fin 17, the heat conduction pad 13 is a silica gel heat conduction pad, the outer fins 15 are uniformly distributed on the left side and the right side of the heat dissipation plate 14, and the inner fins 17 are uniformly distributed on the hole wall surface of the through hole 16, the middle part of through-hole 16 is provided with radiator fan 18, at the middle part fixed mounting at mounting panel 5 top heating panel 14 and heat conduction pad 13, through outer fin 15, through-hole 16, interior fin 17, radiator fan 18's cooperation, can effectively improve echo suppressor body 1's radiating effect to guarantee the life of echo suppressor body 1 internal component, further improved echo suppressor body 1's performance.

The working principle is as follows: by fixedly installing two connecting pieces 2 at the left side and the right side of the bottom of the suppressor body 1, hinging two movable connecting rods 3 at the top of each connecting piece 2, fixing limit blocks 4 at the bottom ends of the movable connecting rods 3, arranging an arc-shaped groove 6 at the top of the installing plate 5, arranging a rotatable rotating rod 9 in the middle of the arc-shaped groove 6, sleeving a top block 8 on the surface of the rotating rod 9, and arranging limit grooves 7 at the left side and the right side of the upper part of the arc-shaped groove 6, when the echo suppressor body 1 is fixed, only the top end of the movable connecting rod 3 needs to be placed in the arc-shaped groove 6, then rotating a knob 10 to enable the wider side of the top block 8 to be upward, extruding the limit blocks 4 at the left side and the right side into the interior of the limit groove 7, thereby completing the installation of the suppressor body 1, and simultaneously installing a spring 11 in the interior of the limit groove 7 to enable the two limit blocks 4 to clamp the top block 8, guarantee the stability of installation, whole installation operation is simple and convenient, the trouble of using the screw installation has been avoided, simultaneously in order to further improve echo suppressor body 1's performance, at the middle part fixed mounting at mounting panel 5 top heating panel 14 and heat conduction pad 13, through outer fin 15, through-hole 16, interior fin 17, radiator fan 18's cooperation, can effectively improve echo suppressor body 1's radiating effect, thereby guarantee echo suppressor body 1 internal element's life.

Claims

1. The utility model provides an echo cancellation device of audio frequency and video interactive system, includes echo suppressor body (1) and mounting panel (5), its characterized in that: the bottom of echo suppressor body (1) is provided with connecting piece (2), the bottom of connecting piece (2) articulates there is movable connecting rod (3), the one end fixed mounting that connecting piece (2) were kept away from in movable connecting rod (3) has stopper (4), the top of mounting panel (5) is provided with arc wall (6), the cell wall of arc wall (6) left and right sides all is provided with spacing groove (7), the middle part of arc wall (6) is provided with bull stick (9), bull stick (9) are connected with mounting panel (5) through the bearing rotation, the surface cover of bull stick (9) is equipped with kicking block (8), the inside of spacing groove (7) is provided with spring (11), the cell wall fixed connection of the one end of spring (11) and spacing groove (7), the middle part at mounting panel (5) top is provided with recess (12), the inside fixed mounting of recess (12) has heating panel (14), the heat dissipation structure is characterized in that a heat conduction pad (13) is arranged at the top of the heat dissipation plate (14), outer fins (15) are arranged on the side edges of the heat dissipation plate (14), a through hole (16) is formed in the middle of the heat dissipation plate (14), inner fins (17) are arranged on the surface of the hole wall of the through hole (16), and a heat dissipation fan (18) is arranged in the middle of the through hole (16).

2. The echo cancellation device for an audio-visual interactive system according to claim 1, wherein: the number of connecting pieces (2) is two, two connecting pieces (2) are respectively fixedly installed on the left side and the right side of the bottom of the echo suppressor body (1).

3. The echo cancellation device for an audio-visual interactive system according to claim 1, wherein: the left side and the right side of the bottom of the connecting piece (2) are respectively hinged with the movable connecting rod (3), and the size of the limiting groove (7) is matched with that of the limiting block (4).

4. The echo cancellation device for an audio-visual interactive system according to claim 1, wherein: the top and the bottom of the top block (8) are both arc-shaped edges, and the width of the upper part of the top block (8) is larger than that of the bottom.

5. The echo cancellation device for an audio-visual interactive system according to claim 1, wherein: the rotary rod (9) penetrates through the front side of the mounting plate (5), and a knob (10) is fixedly mounted at the front end of the rotary rod (9).

6. The echo cancellation device for an audio-visual interactive system according to claim 1, wherein: the heat conducting pad (13) is a silica gel heat conducting pad, the outer fins (15) are uniformly distributed on the left side and the right side of the heat radiating plate (14), and the inner fins (17) are uniformly distributed on the surface of the hole wall of the through hole (16).