CN200984184Y - Sound box for acoustic field testing - Google Patents
Sound box for acoustic field testing Download PDFInfo
- Publication number
- CN200984184Y CN200984184Y CN 200620036874 CN200620036874U CN200984184Y CN 200984184 Y CN200984184 Y CN 200984184Y CN 200620036874 CN200620036874 CN 200620036874 CN 200620036874 U CN200620036874 U CN 200620036874U CN 200984184 Y CN200984184 Y CN 200984184Y
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- China
- Prior art keywords
- sound field
- airtight casing
- speaker
- audio amplifier
- panel
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Abstract
The utility model provides an acoustic enclosure used for sound field test, relating to the acoumeter sound field testing equipment technical field, which includes a closed box body, a loud speaker arranged in the closed box body, a wire board which is provided with terminal posts and an acoustic frequency attachment line which is connected with the loud speaker and the terminal post, the wire board and the acoustic frequency attachment line are on the closed box body, the horizontal transverse section of the closed box body is triangle or trapezoid. The utility model is of novel design and simple structure, and has a wide market application prospect.
Description
Technical field
This utility model relates to sonometer sound field test set, especially a kind of audio amplifier that is used for the sound field test.
Background technology
According to estimates, nearly 500,000,000 populations in the whole world suffer from hearing loss in various degree at present, and ever-increasing trend is arranged.Its main cause be serious day by day professional noise, environment and life noise spread unchecked cause.In addition, along with the caused audition progressive loss of people's age growth also becomes more serious.In order better to help these impaired hearings crowd to diagnose timely and rehabilitation, must carry out hearing test accurately, audition examination, analyze and differentiate and tin force estimation.And cooperate special-purpose audition checkout equipment---sonometer, except the various earphones that sonometer disposed were tested, the test of sound field also was indispensable test link.The sound field test is to utilize a quiet environment interior (as soundproof room) isolated with the external environment noise, the quantifiable accurate source of sound that utilizes sonometer to send, promotion is used for the speaker of sound field test, builds a real acoustic field border, exactly the audition situation of test subject.Generally when clinical practice, generally all adopt earphone to test.But wear back assessment etc. for what neonate carried out audition examination test, child's hearing test and sonifer, adopt the earphone test very inconvenient, and the location sense of earphone test is relatively poor, can not obtain wide dark sound field; As adopting common audio amplifier on the market, lead hole owing to have on the panel of audio amplifier, the sound that sends is surround sound, when test, same existence location sense is poor, can not obtain wide dark defectives such as sound field.
The utility model content
For solving the problems of the technologies described above, the utility model proposes a kind of being applicable in the soundproof room, the location is felt by force, is convenient to obtain wide dark sound field, hearing test audio amplifier accurately, and this utility model is novel, simple in structure.
The technical solution adopted in the utility model is as follows:
A kind of audio amplifier that is used for the sound field test, comprise airtight casing, be arranged at binding post and the audio connecting cord that is connected speaker and binding post on the intravital speaker of closed box, the airtight casing, it is characterized in that: the level cross-sectionn of described airtight casing is triangular in shape or trapezoidal, has the balance passage in the back or the bottom of airtight casing.
Described level cross-sectionn airtight casing triangular in shape is made of panel, top board, base plate and left and right two side plates, and described balance passage is opened on base plate, and described speaker is fixedlyed connected with panel, and binding post is fixed on the base plate.
Described level cross-sectionn is trapezoid airtight casing and is made of panel, backboard, top board, base plate and left and right two side plates, and described balance passage is opened on backboard, and described speaker is fixedlyed connected with panel, and binding post is fixed on the backboard.
The diameter of described balance passage is the 3-4 millimeter.
Described triangle is an isosceles right triangle.
Described airtight cabinet wall is provided with the fillet of reinforcing usefulness.
Advantage of the present utility model is:
1, because airtight casing of the present utility model level cross-sectionn is triangular in shape or trapezoidal, in the hearing test environment, the ear of being convenient to audio amplifier aligning testee is placed in the corner, the vertical pivot of speaker and the ear of testee remain on the line, and the height of ear was identical when promptly the speaker center height should be with testee's sitting posture.So just can well be located sense and wide dark sound field; And the panel that seals airtight casing seals relatively, and the more existing audio amplifier of leading hole that is provided with has straight line to sound, location sense by force, can obtain the advantage of wide dark sound field.
2, owing on airtight casing, have the balance passage, make airflow, the pressure balance of closed box inside and outside, thus guarantee that the audio distortions degree that audio amplifier sends is little.
3, this utility model is novel, simple in structure, possesses market application foreground widely.
Description of drawings
Fig. 1 is the overall structure sketch map of the airtight casing of triangle
Fig. 2 is the overall structure sketch map of trapezoidal airtight casing
Fig. 3 is the syndeton sketch map of speaker and binding post
Fig. 4 is the position view between tested patient and two audio amplifiers
The specific embodiment
As shown in Figure 1, a kind of audio amplifier that is used for the sound field test, comprise airtight casing, be arranged at binding post 2 and the audio connecting cord 3 that is connected speaker 1 and binding post 2 on the intravital speaker 1 of closed box, the airtight casing, the level cross-sectionn of described airtight casing is triangular in shape.Described triangle is an isosceles right triangle.Described level cross-sectionn airtight casing triangular in shape is made of panel 5, top board 6, base plate 7 and left and right two side plates 8, and described balance passage 4 is opened on base plate 7, and described speaker 1 is fixedlyed connected with panel 5, and binding post 2 is fixed on the base plate 7.The diameter of described balance passage 4 is the 3-4 millimeter.Described airtight cabinet wall is provided with the fillet 10 of reinforcing usefulness.
As shown in Figure 2, a kind of audio amplifier that is used for the sound field test, comprise airtight casing, be arranged at binding post 2 and the audio connecting cord 3 that is connected speaker 1 and binding post 2 on the intravital speaker 1 of closed box, the airtight casing, the level cross-sectionn of described airtight casing is trapezoidal.Described trapezoidal be isosceles trapezoid.Described level cross-sectionn is trapezoid airtight casing and is made of panel 5, backboard 9, top board 6, base plate 7 and left and right two side plates 8, and described balance passage 4 is opened on backboard 9, and described speaker 1 is fixedlyed connected with panel 5, and binding post 2 is fixed on the backboard 9.The diameter of described balance passage 4 is the 3-4 millimeter.Described airtight cabinet wall is provided with the fillet 10 of reinforcing usefulness.
Embodiment 3
In order to listen force estimation and test accurately, require the phonate hole location of audio amplifier to want accurately a phonate hole to be arranged when speaker production.Therefore, audio amplifier need be made closed type, can not add as common audio amplifier and lead hole.Airtight casing employing thickness of the present utility model is that 12 millimeters～15 millimeters medium density fibre board (MDF) is made, and speaker 1 embeds in the panel 5, and adds the face frame, and black fur-felt or black plastic film are pasted in the surface.80 * 80 millimeters patch panels that binding post 2 is housed are arranged on the base plate 7 of level cross-sectionn airtight casing triangular in shape, or the level cross-sectionn is on the backboard 9 of trapezoid airtight casing.It is very solid that speaker production requires, and all joints are all used binding agent and will be reinforced the fillet 10 and the medium density fibre board (MDF) of usefulness and cement, and tighten with wood screw fixing, avoid seam crossing to leak gas and life-time service after screw shaken pine and cause tonequality to degenerate.The bore size of speaker 1 should be more smaller than speaker 1 caliber size in the audio amplifier, aligns with outermost one circle of cone ring.Speaker 1 combines with front panel 5, uses wood screw and fixes.Bore balance passage 4.Because what adopt is airtight casing, cause ventilation not smooth after the sealing, when ambient air temperature changed, the intravital air of closed box was shrinkage or flatulence of heat type, thereby made the cone voice coil loudspeaker voice coil can be inwards or outwards leave the equilbrium position, will cause the audio-frequency test distorted signals.For this reason, offer a diameter on the backboard 9 that should be trapezoid airtight casing and be 3～4 millimeters balance passage 4, the intravital pressure of closed box is equated with extraneous in the base plate 7 or the level cross-sectionn of level cross-sectionn airtight casing triangular in shape.Accomplish to ventilate obstructed, reach airtight casing internal gas pressure and remain and the equilibrated state of ambient pressure.The speaker 1 that this utility model adopted is cone loudspeaker 1, and wherein the level cross-sectionn is trapezoid airtight casing employing YD250-16 speaker 1.It is the arrangement of nearly sound field that the arrangement of audio amplifier in soundproof room adopts the equilateral triangle type.The angle, two rooms that two audio amplifiers are erected in the soundproof room becomes an equilateral triangle with listening location.This equilateral equilateral triangle is changeable, and soundproof room hour equilateral triangle can be littler; Its equilateral triangle just can enlarge when soundproof room was big.Simultaneously, allow testee's the ear and the vertical pivot of speaker 1 remain on the line, the height of ear was identical when both audio amplifier speaker 1 centre-height should be with testee's sitting posture.So just can well be located sense and wide dark sound field.
Embodiment 4
This utility model is not limited to the foregoing description, and according to the description of the foregoing description, those of ordinary skill in the art also can make some conspicuous changes, but these changes all should fall within the protection domain of this utility model claim.
Claims (5)
1, a kind of audio amplifier that is used for the sound field test, comprise airtight casing, be arranged at binding post (2) and the audio connecting cord (3) that is connected speaker (1) and binding post (2) on the intravital speaker of closed box (1), the airtight casing, it is characterized in that: the level cross-sectionn of described airtight casing is triangular in shape or trapezoidal, has balance passage (4) in the back or the bottom of airtight casing.
2, the audio amplifier that is used for the sound field test according to claim 1, it is characterized in that: described level cross-sectionn airtight casing triangular in shape is made of panel (5), top board (6), base plate (7) and left and right two side plates (8), described balance passage (4) is opened on base plate (7), described speaker (1) is fixedlyed connected with panel (5), and binding post (2) is fixed on the base plate (7).
3, the audio amplifier that is used for the sound field test according to claim 1, it is characterized in that: described level cross-sectionn is trapezoid airtight casing and is made of panel (5), backboard (9), top board (6), base plate (7) and left and right two side plates (8), described balance passage (4) is opened on backboard (9), described speaker (1) is fixedlyed connected with panel (5), and binding post (2) is fixed on the backboard (9).
4, according to claim 2 or the 3 described audio amplifiers that are used for the sound field test, it is characterized in that: the diameter of described balance passage (4) is the 3-4 millimeter.
5, the audio amplifier that is used for the sound field test according to claim 1, it is characterized in that: described airtight cabinet wall is provided with to be used and the fillet of reinforcing usefulness (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620036874 CN200984184Y (en) | 2006-12-28 | 2006-12-28 | Sound box for acoustic field testing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620036874 CN200984184Y (en) | 2006-12-28 | 2006-12-28 | Sound box for acoustic field testing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200984184Y true CN200984184Y (en) | 2007-12-05 |
Family
ID=38913644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620036874 Expired - Fee Related CN200984184Y (en) | 2006-12-28 | 2006-12-28 | Sound box for acoustic field testing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200984184Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101248997B (en) * | 2008-03-25 | 2010-06-09 | 王永华 | Horizontal orientation acoustic source location method |
| CN102871666A (en) * | 2012-09-26 | 2013-01-16 | 中国人民解放军第二军医大学 | Spatial sound locating test system |
-
2006
- 2006-12-28 CN CN 200620036874 patent/CN200984184Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101248997B (en) * | 2008-03-25 | 2010-06-09 | 王永华 | Horizontal orientation acoustic source location method |
| CN102871666A (en) * | 2012-09-26 | 2013-01-16 | 中国人民解放军第二军医大学 | Spatial sound locating test system |
| CN102871666B (en) * | 2012-09-26 | 2014-12-24 | 中国人民解放军第二军医大学 | Spatial sound locating test system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071205 Termination date: 20121228 |