CN203675301U - Curve-shaped sound diffusion cone with controllable radiation angle - Google Patents

Abstract

The utility model relates to a curve-shaped sound diffusion cone with a controllable radiation angle, which comprises a curve-shaped conical body and a conical body upper end face, wherein the curve-shaped conical body and the conical body upper end face are connected through a connecting rib, thereby enabling a cavity portion between the curve-shaped conical body and the conical body upper end face to form a 360-degree curve-shaped horn corresponding to high-frequency sound waves; a diffusion outlet end of the curve-shaped horn is provided with a group of sound flow guiding pieces; a cavity of the curve-shaped horn is internally provided with a fan-shaped sound masking body; and the center of the conical body upper end face is provided with a high-frequency sound incoming hole, and the center faces directly to a conical tip. The curve-shaped sound diffusion cone provided by the utility model ensures a wide radiation angle, also centralizes sound energy, and prevents high-frequency radiation sound waves with high directionality from radiating toward right behind to cause unnecessary waste.

Description

The controlled radiation angle sound diffusion cone of curvilinear style

Technical field

The utility model relates to the sound diffusion device of a kind of audio amplifier or other sound-producing devices, relates in particular to the controlled radiation angle sound diffusion cone of a kind of curvilinear style.

Background technology

The loudspeaker unit of selling on Vehicles Collected from Market all has certain radiation axial angle, and traditional audio amplifier or sound-producing device are all to a radiative acoustic wave, have certain horizontal radiation angle.Medium-high frequency part is especially obvious, and in the time that people's the sense of hearing departs from the perpendicular bisector of two sound lines, its acoustic pressure and phase characteristic all incite somebody to action that great changes will take place, thereby cause sound field, great changes will take place, and in fact this be totally unfavorable for audition.In actual life, in the time that people's ear is heard a sound source sounding, most of sound wave of hearing is reflected back by spatial obstacle thing etc., and direct sound wave is actual and few, and therefore such sound sounds that nature is plentiful.There is no reflected sound if only have direct sound wave, the sound of hearing is wizened, and in strong anechoic room, this experience will be more deep.In fact, in actual life, various sound sources are also to all the winds to spread sound wave, as long as you deliberately do not go to change, they will reflect and spread apart everywhere by its rule; And according to current conventional acoustic reduction mode, this strong radiation directivity will inevitably lose a lot of reflected sound information, the sound field of reduction is nature not; Simultaneously, traditional audio amplifier or sound-producing device also have higher requirement to acoustic surrounding, because this strong radiation directivity often causes local reflex too strong, therefore must take certain sound absorption measure, thereby waste the energy of power amplifier and audio amplifier, and make the sound stiff lackluster that seems.In addition, traditional audio amplifier is limited by boundling effect, and best listening zone is very narrow, leaves best listening zone, and just great changes have taken place in audition impression.If but enable voice spreads with the wide-angle of 240 ~ 330 °, above-mentioned situation will be improved greatly, it does not need too many space sound absorption, also do not need extra sound diffusion facility, its acoustic energy just can evenly spread apart to surrounding with wide-angle, and horizontal direction does not have directive property and directivity, acoustic surrounding has just become an acoustic resonator like this, sound is naturally elegant, there is no constriction, just like the same at music hall.

Therefore, audio amplifier or other sound-producing devices of the controlled radiation angle sound diffusion cone of curvilinear style are adopted, no matter be placed among the digital cinema system of cinema system, specialty of family or general meeting public address, on-the-spot performance public address, capital makes best listening location widen as far as possible, even if slightly deviation, also be unlikely to acoustic image and obviously concentrate on a certain part, make sound field serious disproportion.

Utility model content

The purpose of this utility model is in order to overcome problems of the prior art, provides a kind of curvilinear style controlled radiation angle sound diffusion cone.

The controlled radiation angle sound diffusion cone of curvilinear style of the present utility model, it comprises curve centrum and centrum upper surface, described curve centrum is connected by dowel with centrum upper surface, makes the curve bugle of the corresponding high frequency sound wave of one 360 degree of cavity part formation between curve centrum and centrum upper surface; The outlet diffusor end of described curve bugle is provided with one group of acoustic conductance flow; In the cavity of described curve bugle, be provided with the fan-shaped sound body of covering at fan angle; Described centrum upper surface circle centre position has high frequency sound and enters perforation, and its center of circle is the upper vertebra point to curve centrum just.

The described fan-shaped fan angle of covering sound body is 30 ~ 120 degree.

The curvature of described curve centrum, acoustic conductance flow and centrum upper surface is 55 ~ 175 degree.

The utility model compared with prior art has the following advantages:

1, because the utility model adopts one group of curve centrum through special optimal design, the fan-shaped module compositions such as sound body of covering, can be in 240 ~ 330 ° of directions the special sound diffusion structure of radiation high frequency sound wave.Make within high frequency radiation sound wave concentrates on the scope in 240 ~ 330 °, front, both to have ensured broad radiation angle, concentrated again acoustic energy, avoided high frequency radiation sound wave that directive property is stronger to dead astern radiation, cause unnecessary waste.

2, because the utility model is all different according to the wavelength of medium and low frequency sound wave and high frequency sound wave and characteristic, designed targetedly the curve cone harmony flow deflector structure of different curvature.For medium and low frequency radiative acoustic wave, whole curve centrum, comprises acoustic conductance flow and the fan-shaped rear side exposed parts of covering sound body, is all its reflecting surface, because medium and low frequency sound wave directivity is not strong, lets alone with 360 ° to surrounding omnidirectional radiation.

3, the power simultaneously carrying with tweeter unit due to medium and low frequency loudspeaker unit is different with frequency, and they are in the coupling of acoustic conductance flow outside, and high frequency sound wave is with 240 ~ 330 ° of radiation angles, and medium and low frequency sound wave is with 360 degree radiation angle radiation.Therefore, the utility model has not only completed the wide acoustic irradiation of full range, also greatly strengthen the reflective sound wave part to intelligent's ear, make whole sound field more balanced, sense of hearing is harmony and natural more, can meet the required audio frequency effects such as various families or professional digital cinema, meeting room public address, middle-size and small-size on-the-spot performance.

3, because the utility model is very easy for the sound field rebuilding under complicated Architectural acoustics conditions, its pendulum position also has no special requirements, therefore after the wall reflection by certain, sound field is more naturally proper, and best listening zone is much wider than the sound field of general audio amplifier or sound-producing device generation.Actual listen test shows: be critical piece by the utility model, 5.1 cinema systems of the audio amplifier forming or sound-producing device composition have very strong telepresenc, bass extends very low, dynamics is pure, of tremendous momentum, the movement of acoustic image and location sharp outline, Sensurround is very strong, in the time of off-target LisPos, sound field is without obvious distortion.

4, owing to being provided with asymmetrical curve cone syndeton in the utility model, asymmetrical curve cone wherein has nonlinear transient characteristic, therefore can effectively suppress unnecessary reflection and the refraction of sound wave, thereby make to pass through respectively from the sound wave of medium and low frequency loudspeaker unit and tweeter unit the water conservancy diversion of curve cone, acoustic conductance flow, and after merge at radiator middle part to external radiation.Because the distance of sound wave in the time merging is very near, normally listening in distance, be similar to point sound source, therefore can make its phase characteristic reach best.

5, because the utility model has adopted integral structure, can injection moulding or the mode such as 3D printing realize customization volume production, reduced production cost simultaneously.

Brief description of the drawings

Below in conjunction with accompanying drawing to further detailed explanation of embodiment of the present utility model.

Fig. 1 is structural representation of the present utility model.

Fig. 2 is the fan-shaped sound body structure schematic diagram of covering of the present utility model.

Fig. 3 is section theory structure schematic diagram of the present utility model.

Fig. 4 is the utility model high frequency curve number angle sections theory structure schematic diagram.

Fig. 5 is the utility model operation principle schematic diagram.

Fig. 6 is the fan-shaped sound body angle schematic diagram of covering of the utility model.

In figure: 1-curve centrum, 2-acoustic conductance flow 3-centrum upper surface, 4-high frequency sound enters perforation 5-dowel 6-fan-shaped and covers sound body 7-fan-shaped and cover vertebra point 14-curve centrum lower surface camber under 10-curve bugle, 11-medium and low frequency sound wave, 12-high frequency sound wave, the 13-curve centrum of the upper vertebra point 9-fan of sound body wedge tip 8-curve centrum angle.

Embodiment

The controlled radiation angle sound diffusion cone of the curvilinear style of Fig. 3 and Fig. 4 as shown in Figure 1, Figure 2,, it comprises curve centrum 1 and centrum upper surface 3, curve centrum 1 is connected by dowel 5 with centrum upper surface 3, makes the curve bugle 10 of the corresponding high frequency sound wave of one 360 degree of cavity part formation between curve centrum 1 and centrum upper surface 3; The outlet diffusor end of curve bugle 10 is provided with one group of acoustic conductance flow 2; In the cavity of curve bugle 10, be provided with the fan-shaped sound body 6 of covering at fan angle 9; Centrum upper surface 3 circle centre positions have high frequency sound and enter perforation 4, and its center of circle is the upper vertebra point 8 to curve centrum 1 just; The fan-shaped fan angle 9 of covering sound body 6 is 30 ~ 120 degree; The curvature of curve centrum 1, acoustic conductance flow 2 and centrum upper surface 3 is 55 ~ 175 degree.

Install at Zhen Pen center, 1 time positive centering woofer unit of vertebra point of curve centrum.As Fig. 5, central low-frequency sound wave 11, can be comprehensive to surrounding radiation medium and low frequency sound wave 11 with 360 degree after the water conservancy diversion and reflection of vertebra point 13 and curve centrum lower surface camber 14 under curve centrum; The sound delivery outlet of high pitch loudspeaker just enters perforation 4 to high frequency sound, and its high frequency sound wave 12, can be comprehensive to surrounding radiation with 360 degree after the water conservancy diversion and reflection of the upper vertebra point 8 of curve centrum and curve bugle 10.As Fig. 6, because fan-shaped sound is covered the existence of sound body 6, this part sound wave that is equivalent to fan angle 9 is masked, covers point flowing down of sound body wedge tip 7 through fan-shaped, this part sound wave still from curve bugle not masked portion radiate.Like this, sound as fan-shaped in Fig. 6 control is covered the fan angle 9 of sound body, can control the horizontal angle of coverage of being bored the high frequency sound wave 12 spreading out by this curvilinear style sound diffusion.

Claims (3)

1. the controlled radiation angle sound diffusion cone of curvilinear style, it is characterized in that: it comprises curve centrum (1) and centrum upper surface (3), described curve centrum (1) is connected by dowel (5) with centrum upper surface (3), makes the curve bugle (10) of the corresponding high frequency sound wave of one 360 degree of cavity part formation between curve centrum (1) and centrum upper surface (3); The outlet diffusor end of described curve bugle (10) is provided with one group of acoustic conductance flow (2); In the cavity of described curve bugle (10), be provided with the fan-shaped sound body (6) of covering at fan angle (9); Described centrum upper surface (3) circle centre position has high frequency sound and enters perforation (4), and its center of circle is the upper vertebra point (8) to curve centrum (1) just.

2. the controlled radiation angle sound diffusion cone of curvilinear style as claimed in claim 1, is characterized in that: the described fan-shaped fan angle (9) of covering sound body (6) is 30 ~ 120 degree.

3. the controlled radiation angle sound diffusion of curvilinear style as claimed in claim 1 cone, is characterized in that: the curvature of described curve centrum (1), acoustic conductance flow (2) and centrum upper surface (3) is 55 ~ 175 and spends.

Images