CN2678062Y

CN2678062Y - Channel control structure

Info

Publication number: CN2678062Y
Application number: CN 200320119667
Authority: CN
Inventors: 张志宏
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-12-25
Filing date: 2003-12-25
Publication date: 2005-02-09
Anticipated expiration: 2013-12-25

Abstract

The utility model discloses a wave channel control structure, and mainly solves the problems of complicated structure, high cost, etc. which exist in the prior art. The utility model comprises an enclosing wall and a sound actuator. A plurality of partition boards are arranged inside the enclosing wall, and thereby, a sound channel is divided into a plurality of wave channels. Buttress blocks with different dimensions are respectively arranged inside the entire wave channels or partial wave channels, and the wave channels on the positions of the buttress blocks accordingly and outwardly bulge. The buttress blocks of the wave channels adjacent to a central axis line are wider, and the buttress blocks which are outward along the both sides of the central axis line are gradually constricted. Due to the fact that the utility model mounts the buttress blocks inside the wave channels, and the traveling range of sound waves adjacent to the central axis line of the wave channel control structure is increased due to the fact that the sound waves are blocked by the buttress blocks to make a detour; the blocking of the sound waves of the both sides of the central axis line of the wave channel control structure is less and less, and the sound waves can not be blocked when the sound waves go to the farthest sides, and the sound waves do not need make a detour to increase the travel range. And thereby, the purpose that the sound waves are converted to approximate plane waves is obtained. The wave channel control structure has simple structure, easy measuring, calculating, and adjusting, low cost, and good effect.

Description

The radio frequency channel control structure

Technical field

The utility model relates to a kind of stereo set, particularly is used for the stereo set of large-scale music hall, cinema and outdoor large concert, as the radio frequency channel control structure of bugle etc.

Background technology

Existing stereo set, such as bugle, contain leg and audio drivers, to send out by the radiation angle of setting by the sound wave that electric signal produces, because the natural quality of sound wave, the corrugated of the sound wave of Xing Chenging is for being the sphere in the center of circle with the sounding point like this, therefore, the same sound wave that reproduces by bugle arrives the conplane time and has difference, near the sound wave that is positioned at the bugle axis can arrive at first, and is far away more from the axis, and the time that acoustical impedance arrives is many more, when tandem gets up to become array about the plural bugle, sound wave can produce interference, a kind of " pectination effect " occur, and sound wave can produce counteracting, in this case, the tonequality experienced of audience can variation.How to solve this interference, just become the key issue of arrayed applications, and how spherical wave is changed into plane wave, allow sound wave normally superpose, this is the core technology that solves acoustic interference.For addressing the above problem, someone once was divided into bugle a plurality of radio frequency channels, each radio frequency channel is designed to crooked shape, to reach the purpose that sound wave is converted to the almost plane ripple, but the radio frequency channel control structure of this structure, its complex structure, measuring and calculating and adjustment are inconvenient, technology cost height, and its effect is not ideal.

The utility model content

The purpose of this utility model is to provide a kind of radio frequency channel control structure, can reach the purpose that sound wave is converted to the almost plane ripple, and simple in structure, and cost is low, and is effective.

Radio frequency channel control structure described in the utility model, contain leg and audio drivers, multilayer insulating panel is housed in leg, thereby sound channel is divided into a plurality of radio frequency channels, the block of different size is housed respectively in part radio frequency channel all or wherein, and in the radio frequency channel of link stopper position correspondingly to outer lug, near the link stopper broad of the radio frequency channel of axis, and outside along the both sides, axis, link stopper is constriction gradually.

Because radio frequency channel control structure described in the utility model, link stopper is housed in radio frequency channel, make near the stroke of radio frequency channel control structure axis sound wave owing to being subjected to the growth of detouring of stopping of link stopper, and stopping that both sides, radio frequency channel control structure axis are subjected to is fewer and feweri, is not stopped fully time the limit and does not need to detour and increase stroke, thereby reach the purpose that sound wave is converted to the almost plane ripple, it is simple in structure, be easy to measuring and calculating and adjustment, cost is low, and is effective.

Description of drawings

Below in conjunction with drawings and Examples the utility model is described in further detail:

Fig. 1 is a part sectioned view of the present utility model;

Fig. 2 is the A-A cut-open view of Fig. 1;

Fig. 3 is the B-B cut-open view of Fig. 1;

Fig. 4 is the C-C cut-open view of Fig. 1;

Fig. 5 is the D-D cut-open view of Fig. 1.

Embodiment

Radio frequency channel control structure described in the utility model, as Fig. 1,2,3,4, contain leg 1 and audio drivers 2, multilayer insulating panel 3 is housed in leg 1, thereby sound channel is divided into a plurality of radio frequency channels 4, the block 5 of different size is housed respectively in part radio frequency channel 4 all or wherein, and in the radio frequency channel 4 of link stopper 5 positions correspondingly to outer lug, link stopper 5 broads of the radio frequency channel 4 of close axis 6, and outside along the both sides, axis, link stopper 5 is constriction gradually, like this, make stroke growth, and the sound wave stroke of both sides, axis shortens gradually near the sound wave of axis 6.

Outermost radio frequency channel 4 beyond in the axis is not adorned link stopper, as Fig. 5.

3 on described dividing plate is parallel, and described radio frequency channel 4 is the strip passage 8 that a parallel coaming plate 7 surrounds, and the cross sectional area that each radio frequency channel is equipped with link stopper 5 is equal or close, like this simple in structure, the technology cost is low, and the transverse gage that only need adjust link stopper 5 when tuning gets final product, and is more convenient.

Described be positioned near the axis link stopper 5 cylindrical or approach cylindrical, link stopper 5 ovalizes far away from the axis, and far away more from the axis, oval-shaped major axis is long more, minor axis is short more.

Claims

1, radio frequency channel control structure, contain leg (1) and audio drivers (2), it is characterized in that: multilayer insulating panel (3) is housed in leg (1), thereby sound channel is divided into a plurality of radio frequency channels (4), the block (5) of different size is housed respectively in part radio frequency channel (4) all or wherein, and in the radio frequency channel (4) of link stopper (5) position correspondingly to outer lug, near link stopper (5) broad of the radio frequency channel (4) of axis (6), and (6) both sides are outside along the axis, and link stopper (5) is constriction gradually.

2, radio frequency channel control structure according to claim 1 is characterized in that: parallel between described dividing plate (3).

3, radio frequency channel control structure according to claim 1 is characterized in that: described radio frequency channel (4) is the strip passage (8) that a parallel coaming plate (7) surrounds.

4, radio frequency channel control structure according to claim 1 is characterized in that: the cross sectional area that each radio frequency channel (4) is equipped with link stopper (5) is equal or close.

5, according to claim 1,2 or 3 described radio frequency channel control structures, it is characterized in that: in addition outermost radio frequency channel (4) is not adorned link stopper (5) in radio frequency channel control structure axis (6).