CN209030415U - A kind of loudspeaker of anti-standing wave - Google Patents

Abstract

The utility model discloses a kind of loudspeakers of anti-standing wave, including shell, woofer, high-pitched speaker and control panel, woofer and high-pitched speaker are located at the front of shell, control panel is located at the back side of shell, left and right side, upper and lower end face and the back side on the inside of shell form four reflectings surface in common intersection, and four reflectings surface are inclined-plane.Interior of shell is irregular, and multidirectional scattering occurs for the sound wave in shell, can upset significantly the frequency of sound wave, so that internal sound wave and audience wants received sound wave and generate biggish difference, so avoids the generation of standing wave.This utility model is used for field of audio.

Description

A kind of loudspeaker of anti-standing wave

Technical field

The utility model relates to field of audio, more particularly to a kind of loudspeaker of anti-standing wave.

Background technique

Standing wave refers to that the opposite wave in two directions of propagation uploads sowing time, the wave that the two is overlapped mutually in same horizontal line.Loudspeaker Sounding, most of sound wave spread out of from front, and small part spreads out of from front again after toward transmitting inside speaker.

There are six faces for tool inside the speaker (part speaker is also referred to as loudspeaker) of cuboid or square, are easy to happen standing wave Situation leads to audio distortions.It is Parallel Design that concrete reason, which is mostly inside such speaker, for example, left side wall it is parallel with right side wall, Upper side wall is parallel with lower wall and front side wall is parallel with rear wall, the integral multiple of above structure certain wave length of sound easy to form Standing wave will occur when sound wave is spread in speaker for length relation.Existing anti-standing wave mode is to increase energy in the inside of speaker The acoustical material of sound-absorbing cuts down the sound wave inside speaker, it is avoided to leak.The way for absorbing sound wave can ideally improve sound quality, But this design cost is high.

Furthermore in order to advanced optimize sound quality, the vibration of speaker itself is also prevented, so the shell of speaker needs properly Thickness, avoid mechanical oscillation.

Utility model content

The purpose of this utility model is to provide a kind of optimization speaker interior wall plates, realize the loudspeaker of anti-standing wave effect.

Technical solution adopted in the utility model is:

A kind of loudspeaker of anti-standing wave, including shell, woofer, high-pitched speaker and control panel, woofer and high pitch Loudspeaker are located at the front of shell, and control panel is located at the back side of shell, and left and right side, upper and lower end face and the back side on the inside of shell are altogether Same intersection forms four reflectings surface, and four reflectings surface are inclined-plane.

As an improvement of the above scheme, it sees with overlooking, the trapezoidal shape in the inside of shell, the wider side of shell is front, The relatively narrow side of shell is the back side.

As an improvement of the above scheme, shell stainless steel sheet body made of casting, shell with a thickness of 2~4cm, this When shell outside be also inclined-plane close to the positions of four reflectings surface.

As an improvement of the above scheme, the side of shell is equipped with handle on the outside.

As an improvement of the above scheme, handle is that shell is recessed inwardly the groove to be formed, and groove tilts obliquely.

As an improvement of the above scheme, the partition that space in shell is divided into upper layer and lower layer space, partition are equipped in shell On be attached with sound-absorbing material.

As an improvement of the above scheme, high-pitched speaker is located at the space on upper layer, and woofer is located at the space of lower layer, partition In the side at the back side close to shell there is notch the space on upper layer to be made to keep being connected to the space of lower layer.

The utility model has the beneficial effects that the interior of shell of this loudspeaker is irregular, the sound wave in shell occurs multi-direction Property scattering, the frequency of sound wave can be upset significantly, so that internal sound wave and audience wants received sound wave and generate biggish difference It is different, so avoid the generation of standing wave.

Detailed description of the invention

The utility model is described in further detail with reference to the accompanying drawing:

Fig. 1 is the perspective view of loudspeaker；

Fig. 2 is the cross-sectional view of loudspeaker；

Fig. 3 is the top view of loudspeaker；

Fig. 4 is frequency response curve.

Specific embodiment

Referring to figs. 1 to Fig. 4, and with the orientation references benchmark in Fig. 2 for illustrating, left and right directions is indicated hereafter in Fig. 2 Front and back, up and down direction indicate upper surface and lower end surface hereafter, and paper front-rear direction indicates right side and a left side hereafter Side.

The utility model is a kind of loudspeaker of anti-standing wave, including shell, woofer 1, high-pitched speaker 2 and control panel 3, Woofer 1 and high-pitched speaker 2 are located at the front of shell, and control panel 3 is located at the back side of shell.Left and right side on the inside of shell, In common intersection four reflectings surface 4 of formation, four reflectings surface 4 are inclined-plane for upper and lower end face and the back side.Assuming that loudspeaker is one A cube, this four reflectings surface 4 are equivalent to additionally increase face out after the oblique partial application of vertex position of cube.This reality Apply in example, the intersection at the back side, left side and upper surface forms a reflecting surface 4, the back side, left side and lower end surface intersection A reflecting surface 4 is formed, the intersection at the back side, right side and upper surface forms a reflecting surface 4, the back side, right side and lower end The intersection in face forms a reflecting surface 4.

Front, the back side, upper and lower end face and left and right side mentioned above be all on the basis of the space of interior of shell, as The external styling of shell, does not limit strictly.

Interior of shell is irregular, and multidirectional scattering occurs for the sound wave in shell, can upset significantly the frequency of sound wave, make It obtains internal sound wave and audience and wants the biggish difference of received sound wave generation, so avoid the generation of standing wave.

As preferred embodiment, to see with overlooking, the trapezoidal shape in the inside of shell, the wider side of shell is front, That is the lower section in Fig. 3；The relatively narrow side of shell is the back side, i.e. top in Fig. 3.When the sound wave that loudspeaker issue is to the inside of shell When transmitting, left and right side is mutually inclined, also being capable of scattered sound waves.Reflecting surface is in scattered sound waves there are six can be regarded as in this way.

But as preferred embodiment, shell stainless steel sheet body made of casting, shell with a thickness of 2~ 4cm, the outside of shell is also inclined-plane in the position close to four reflectings surface 4 at this time, i.e. the moulding of shell is similar to above substantially Front, the back side, upper and lower end face and the left and right side referred to.

Loudspeaker assembles, in fact, the front and back tool of shell is reserved with biggish notch, for being packed into loudspeaker With control panel 3.It mainly include upper and lower end face and left and right side after shell is made.

As preferred embodiment, the side of shell is equipped with handle 5 on the outside, to carry.It is set on the shell in Fig. 1 It is equipped with the groove for placing handle 5, after handle 5 is put into groove, shell is essentially a smooth face.Another embodiment It is that handle is that shell is recessed inwardly the groove to be formed, and groove tilts obliquely.It can exert a force in palm insertion groove when carrying.

As preferred embodiment, the partition 6 that space in shell is divided into upper layer and lower layer space, partition are equipped in shell Sound-absorbing material, such as inorganic foamed or acoustical cotton etc are attached on 6.High-pitched speaker 2 is located at the space on upper layer, woofer 1 is located at the space of lower layer, and partition 6 in the side at the back side close to shell there is notch to make the space on upper layer and the space guarantor of lower layer Hold connection.

Referring to Fig. 4, wherein a curve generated for conventional speakers, is set as the first curve 11；Another is this Shen Please scheme generate curve, be set as the second curve 12.When we are set as the smoothing factor of curve minimum or close, It can see the most true frequency response of loudspeaker.In middle low-frequency range, in 500Hz frequency range below, the first curve 11 occurs Many bumps peak valleys, this is as caused by the standing wave of internal structure, and the second curve 12 is obviously more smooth than the first curve 11, so The internal structure of loudspeaker can reduce the formation of loudspeaker standing wave from design.

Certainly, the design creation is not limited to above embodiment, and the combination of the various embodiments described above different characteristic can also To reach good effect.Those skilled in the art can also make without departing from the spirit of the present invention It is all included in the scope defined by the claims of the present application with deformation or replacement, these equivalent variation or replacement.

Claims (7)

1. a kind of loudspeaker of anti-standing wave, it is characterised in that: including shell, woofer (1), high-pitched speaker (2) and control panel (3), the woofer (1) and the high-pitched speaker (2) are located at the front of shell, and the control panel (3) is located at the back of shell Face, left and right side, upper and lower end face and the back side on the inside of the shell form four reflectings surface (4) in common intersection, and four The reflecting surface (4) is inclined-plane.

2. the loudspeaker of anti-standing wave according to claim 1, it is characterised in that: see with overlooking, the inside of the shell is in Trapezoidal shape, the wider side of shell are front, and the relatively narrow side of shell is the back side.

3. the loudspeaker of anti-standing wave according to claim 2, it is characterised in that: the shell is stainless made of casting Steel disc body, the shell with a thickness of 2~4cm, the outside of shell is also oblique in the position close to four reflectings surface (4) at this time Face.

4. the loudspeaker of anti-standing wave according to claim 3, it is characterised in that: the side of the shell is equipped with handle on the outside Hand (5).

5. the loudspeaker of anti-standing wave according to claim 4, it is characterised in that: the handle is that shell is recessed inwardly to be formed Groove, groove tilts obliquely.

6. the loudspeaker of anti-standing wave according to claim 1, it is characterised in that: be equipped in the shell by space in shell It is divided into the partition (6) in upper layer and lower layer space, partition is attached with sound-absorbing material on (6).

7. the loudspeaker of anti-standing wave according to claim 6, it is characterised in that: the high-pitched speaker (2) is located at upper layer Space, the woofer (1) are located at the space of lower layer, and the partition (6) has notch in the side at the back side close to shell The space on upper layer is set to keep being connected to the space of lower layer.