CN214101744U

CN214101744U - Can improve audio amplifier of sound directive property

Info

Publication number: CN214101744U
Application number: CN202023326917.0U
Authority: CN
Inventors: 叶建勇
Original assignee: Guangzhou Oubo Audio Equipment Co ltd
Current assignee: Guangzhou Oubo Audio Equipment Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-08-31
Anticipated expiration: 2030-12-31

Abstract

The utility model provides a sound box capable of improving sound directivity, which comprises a sound box body, a left baffle, a right baffle, a first loudspeaker and a second loudspeaker, wherein the left baffle and the right baffle are respectively arranged on the left side and the right side of the sound box body and incline towards the left back and the right back of the sound box body; the first loudspeaker and the second loudspeaker are respectively embedded on the left baffle plate and the right baffle plate and respectively face to the left front and the right front of the sound box body; the method is characterized in that: on left side baffle and right side baffle, install many phase correction blades along vertical direction respectively, the phase correction blade is located first speaker respectively with the outside of second speaker to incline to sound body's centre. Compared with the prior art, the utility model discloses can effectively improve the sound directive property of audio amplifier, can also adjust sound directive property according to actual need to improve audio amplifier user's whole sense and feel and enjoy the degree.

Description

Can improve audio amplifier of sound directive property

Technical Field

The utility model relates to an audio amplifier technical field especially relates to an audio amplifier that can improve sound directive property.

Background

In order to widen the horizontal directivity of a conventional karaoke sound box, two or more tweeters are generally used and distributed on the left and right sides of the sound box, and in order to avoid a comb filter effect between two tweeters located on the same plane and at a certain distance, as shown in fig. 6, a left baffle 2a and a right baffle 3a of a first tweeter 4a mounted on the left side of a sound box body 1a and a second tweeter 5a mounted on the right side of the sound box body are generally inclined toward the left rear side and the right rear side of the sound box body 1a, respectively. The sound box designed in this way has the horizontal directivity that the high-frequency response is the lowest in the axial direction of the acoustic center and the axial direction of the geometric center of the sound box; however, the directivity of the loudspeaker is not well covered right in front of the sound box, but the loudspeaker is in an 8 shape like a dipole loudspeaker, and only covers the left front and the right front of the sound box, so that the high-frequency feeling heard in front of the acoustic center axis of the sound box is insufficient, and the high-frequency condition is shown on the off-axis of two sides.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sound box that can effectively improve sound directive property, make the sound of audio amplifier can effectively cover audio amplifier left side the place ahead, right front and dead ahead to the not enough of prior art existence.

In order to solve the technical problem, the utility model discloses a following technical scheme realizes:

a sound box capable of improving sound directivity comprises a sound box body, a left baffle, a right baffle, a first loudspeaker and a second loudspeaker, wherein the left baffle and the right baffle are respectively arranged on the left side and the right side of the sound box body and are respectively inclined towards the left rear part and the right rear part of the sound box body; the first loudspeaker and the second loudspeaker are respectively embedded on the left baffle and the right baffle and respectively face to the left front and the right front of the sound box body; the method is characterized in that: the left side baffle with on the baffle of right side, install many phase correction blades along vertical direction respectively, the phase correction blade is located respectively first speaker with the outside of second speaker, and incline to in the middle of the audio amplifier body, arbitrary two clearance width between the phase correction blade is not less than the thickness of phase correction blade.

Preferably, the upper and lower parts of the left and right side masks are respectively provided with a connecting part, the connecting part is provided with a connecting hole, the upper and lower surfaces of each phase correction blade are respectively provided with a mounting part, the phase correction blade is mounted on the connecting part through the connecting hole of the connecting part, and the phase correction blade can rotate relative to the connecting part through the mounting part; the installation department with connect the connected mode between the hole for articulated.

Preferably, can improve audio directivity's audio amplifier, still include a plurality of micro drive motors, terminal controller and at least three sound signal detector, micro drive motor establishes the left side baffle with the upper portion of right side baffle, the drive pivot is all established to every micro drive motor's lower extreme, the installation department of every phase correction blade passes the connecting hole of its top and is connected with one of them micro drive motor's drive pivot, micro drive motor pass through electromagnetic switch with the terminal controller is connected, the terminal controller is connected with the sound signal detector electricity, the sound signal detector is installed in the place ahead of audio amplifier and around.

Preferably, the terminal controller comprises a data acquisition module and a control module, the data acquisition module is electrically connected with the sound signal detector, and the control module is electrically connected with the electromagnetic switch.

Compared with the prior art, the utility model discloses the beneficial effect who has is: when sound waves generated by the loudspeaker pass through gaps among the different phase correction blades, the sound waves passing through the gaps are delayed differently due to the change of the length of a propagation path, and the directivity of the loudspeaker is changed to be inclined to the front of the central axis of the box body; therefore, the high-frequency response in the axial front direction of the acoustic center of the sound box is greatly improved, the sound effect heard by a listener in the front of the sound box is consistent with the sound effect heard in the left front direction and the right front direction to a greater degree, and the sensory enjoyment degree of the listener is obviously improved; in addition, the sound directivity of the sound box can be adjusted by rotating the phase correction blade according to the requirement so as to meet the requirements of different occasions on sound effect; in addition, the micro driving motor, the sound signal detector and the terminal controller can efficiently and quickly adjust the directivity, the strength and the sound quality and sound effect of sound according to actual needs.

Drawings

The contents of the drawings and the reference numerals in the drawings are briefly described as follows:

fig. 1 is a schematic structural view of a sound box capable of improving sound directivity according to the present invention;

fig. 2 is a front view of the sound box according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a phase correction blade according to the present invention;

FIG. 4 is a schematic structural diagram of a connecting member according to some embodiments of the present invention;

FIG. 5 is a logic diagram of the WeChat drive motor control of the present invention;

fig. 6 is a schematic view of a conventional loudspeaker in the background art.

Detailed Description

The present invention will be described in further detail with reference to examples.

It will be appreciated by those skilled in the art that the following examples are illustrative of the invention only and should not be taken as limiting the scope of the invention. The specific techniques, connections, conditions, or the like, which are not specified in the examples, are performed according to the techniques, connections, conditions, or the like described in the literature in the art or according to the product specification. The materials, instruments or equipment are not indicated by manufacturers, and all the materials, instruments or equipment are conventional products which can be obtained by purchasing.

As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present.

In the description of the present invention, "a plurality" means two or more unless otherwise specified. The terms "inner," "upper," "lower," and the like, refer to an orientation or a state relationship based on that shown in the drawings, which is for convenience in describing and simplifying the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be understood broadly, and may be, for example, an anchored connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. To those of ordinary skill in the art, the specific meanings of the above terms in the present invention are understood according to specific situations.

It will be understood by those skilled in the art that, unless otherwise defined, all terms (including 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. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Example 1

As shown in fig. 1, a sound box capable of improving sound directivity includes a sound box body 1, a left baffle 2, a right baffle 3, a first speaker 4, and a second speaker 5, where the left baffle 2 and the right baffle 3 are respectively disposed on the left side and the right side of the sound box body 1, and are respectively inclined to the left rear side and the right rear side of the sound box body 1; the first loudspeaker 4 and the second loudspeaker 5 are respectively embedded on the left baffle 2 and the right baffle 3, and the first loudspeaker 4 and the second loudspeaker 5 respectively face to the left front and the right front of the sound box body 1; the method is characterized in that: left side baffle 2 with on the baffle 3 of right side, install many phase correction blades 6 along vertical direction respectively, phase correction blade 6 is located respectively first speaker 4 with the outside of second speaker 5 to incline to audio amplifier body 1's centre, arbitrary two clearance width between the phase correction blade 6 is not less than phase correction blade 6's thickness.

By arranging the phase correction blades 6 towards the front of the central axis of the sound box, when sound waves emitted by the loudspeaker can pass through gaps among the phase correction blades 6, different delays are generated due to the change of the length of a propagation path, so that the sound directivity is changed towards the front of the central axis of the sound box, the high-frequency responses at the left front, the right front and the right front of the sound box have consistency, the auditory effects of audiences in different directions are similar, and the whole effect of the sound box is improved; in addition, because the width of the gap between any two phase correction blades 6 is not less than the thickness of the phase correction blades 6, the adjustment of the sound directivity can be realized, the sound transmission process can be ensured not to be shielded by the phase correction blades 6, and the effective transmission of the sound is facilitated.

Example 2

Example 2 is repeated, but with the difference that, as shown in fig. 2, the left baffle 2 and the right baffle 3 are provided at upper and lower portions thereof with connecting members 7, as shown in fig. 4, the connecting members 7 are provided with connecting holes 71, as shown in fig. 3, mounting portions 61 are provided at upper and lower surfaces of each of the phase correcting blades 6, the phase correcting blades 6 are mounted on the connecting members 7 through the connecting holes 71 of the connecting members 7, and the phase correcting blades 6 are rotatable relative to the connecting members 7 through the mounting portions 61; the mounting portion 61 is hinged to the connecting hole 71 in a connecting mode.

Through the design, the phase correction blades can rotate relative to the connecting part, so that the directivity of sound and the sensory effects of audiences in different directions can be effectively improved by shifting or rotating the orientation of the phase correction blades according to requirements; the connecting part 7 and the phase correcting blade 6 can be rotated more easily, and the orientation of the phase correcting blade 6 can be adjusted according to actual needs in the using process, so that the sound directivity of the loudspeaker can be adjusted.

Example 3

Embodiment 2 is repeated, but with the following differences, as shown in fig. 2 and 5, the sound box capable of improving the sound directivity further includes a plurality of micro driving motors 8, a terminal controller 9 and at least three sound signal detectors 10, the micro driving motors 8 are disposed on the upper portions of the left side baffle plate 2 and the right side baffle plate 3, a driving rotating shaft 81 is disposed at the lower end of each micro driving motor 8, the mounting portion 61 of each phase correcting blade 6 passes through the connecting hole 71 above the mounting portion to be connected with the driving rotating shaft 81 of one of the micro driving motors 8, the micro driving motor 8 is connected with the terminal controller 9 through an electromagnetic switch 82, the terminal controller 9 is electrically connected with the sound signal detectors 10, and the sound signal detectors 10 are mounted in front of and around the sound box.

Above design, accessible sound signal detector 10, detect the audio amplifier dead ahead, the sound frequency of left side place ahead and right front, tone quality and sound intensity, accessible signal transmission network (like wifi, bluetooth etc.) is connected between sound signal detector 10 and the terminal controller 9, the sound signal that sound signal detector 10 detected can directly transmit terminal controller 9, the audio amplifier regulating personnel controls electromagnetic switch 82 through terminal controller 9, adjust each micro drive motor 8, thereby adjust phase correction blade 6 and rotate, the sound signal that detects until sound signal detector 10 meets the requirements, realize the automatic accurate control of sound and tone quality.

Example 4

Embodiment 3 is repeated, but with the following difference that the terminal controller 9 includes a data acquisition module electrically connected to the sound signal detector 10 and a control module electrically connected to the electromagnetic switch 82.

The data acquisition module is used for receiving the signals transmitted by the sound signal detector 10, processing and displaying the signals, and an operator can controllably adjust the electromagnetic switch 82 through the control module of the terminal controller 9 until the signals detected by the sound signal detector 10 meet requirements.

It should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting, and although the present invention has been described in detail by the above preferred embodiments, it should be understood by those skilled in the art that various changes in form and detail made on the principle of the present invention are within the protective scope of the present invention.

Claims

1. A sound box capable of improving sound directivity comprises a sound box body (1), a left baffle (2), a right baffle (3), a first loudspeaker (4) and a second loudspeaker (5), wherein the left baffle (2) and the right baffle (3) are respectively arranged on the left side and the right side of the sound box body (1) and are respectively inclined towards the left back and the right back of the sound box body (1); the first loudspeaker (4) and the second loudspeaker (5) are respectively embedded on the left baffle plate (2) and the right baffle plate (3), and the first loudspeaker (4) and the second loudspeaker (5) respectively face to the left front and the right front of the sound box body (1); the method is characterized in that: left side baffle (2) with on right side baffle (3), install many phase correction blades (6) along vertical direction respectively, phase correction blade (6) are located respectively first speaker (4) with the outside of second speaker (5), and incline to in the centre of audio amplifier body (1), arbitrary two clearance width between phase correction blade (6) is not less than the thickness of phase correction blade (6).

2. The sound box according to claim 1, wherein: connecting parts (7) are mounted on the upper portion and the lower portion of the left baffle (2) and the right baffle (3), connecting holes (71) are formed in the connecting parts (7), mounting portions (61) are arranged on the upper surface and the lower surface of each phase correction blade (6), the phase correction blades (6) are mounted on the connecting parts (7) through the connecting holes (71) of the connecting parts (7), and the phase correction blades (6) can rotate relative to the connecting parts (7) through the mounting portions (61); the installation part (61) is hinged with the connection holes (71).

3. The sound box according to claim 2, wherein: still include a plurality of micro drive motors (8), terminal controller (9) and at least three sound signal detector (10), establish micro drive motor (8) left side baffle (2) with the upper portion of right side baffle (3), drive pivot (81) are all established to the lower extreme of every micro drive motor (8), installation department (61) of every phase correction blade (6) are passed connection hole (71) of its top and are connected with drive pivot (81) of one of them micro drive motor (8), micro drive motor (8) through electromagnetic switch (82) with terminal controller (9) are connected, terminal controller (9) are connected with sound signal detector (10) electricity, sound signal detector (10) are installed in the place ahead of audio amplifier and around.

4. An acoustic enclosure for improving sound directivity according to claim 3, wherein: the terminal controller (9) comprises a data acquisition module and a control module, the data acquisition module is electrically connected with the sound signal detector (10), and the control module is electrically connected with the electromagnetic switch (82).