CN201172897Y - Diffusion sound absorbers on surface of fabric - Google Patents
Diffusion sound absorbers on surface of fabric Download PDFInfo
- Publication number
- CN201172897Y CN201172897Y CNU2008200561542U CN200820056154U CN201172897Y CN 201172897 Y CN201172897 Y CN 201172897Y CN U2008200561542 U CNU2008200561542 U CN U2008200561542U CN 200820056154 U CN200820056154 U CN 200820056154U CN 201172897 Y CN201172897 Y CN 201172897Y
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- sound
- sound absorption
- diffusing
- absorption body
- fabric surface
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Abstract
The utility model relates to the technical field of sound parts, in particular to a fabric surface diffusing sound absorption body. The fabric surface diffusing sound absorption body is characterized in that the outer shape of the diffusing sound absorption body is a sealed hollow multilateral body, sound absorption materials are arranged inside the diffusing sound absorption body, a plurality of strip-shaped grooves are arranged on the surface of the diffusing sound absorption body which is contacted with the sound absorption materials, and a layer of sound permeable fabric surface layer is arranged on the surface of the strip-shaped grooves. The fabric surface diffusing sound absorption body has the beneficial effects of novel and simple structure, flexible combination, convenient installation, and double effects of absorbing sound and diffusing, the long time work comfortableness of sound listeners is guaranteed, the auditory fatigue is avoided, sound can be effectively controlled, harmful strong reflected sound is eliminated, sound focus is avoided, the speech definition is improved, and furthermore the fabric surface diffusing sound absorption body has simple manufacture, low cost and good performance, and is widely applied in indoor acoustic designs of various rooms which record and replay sound, such as recording rooms, control rooms, audiovisual rooms, home theaters and the like.
Description
[technical field]
The utility model relates to the sound part technical field, specifically a kind of fabric side diffusion sound absorber.
[background technology]
Drill in the room of the class hall and sound recording and playback in sight, the indoor tone quality design is absolutely necessary, and various Acoustic treatment material is combined in the interior decoration with structure.The sound absorption of indoor wall can be eliminated harmful strong reflection sound, avoids sound focus, reduces the room reverberation time, reduces the reverberation sound level, be improved speech articulation.In common interior decoration, sound absorption is to be provided by different walls with scattering, fits up the scattering wall that is adopted at present and also lacks sound absorbing capabilities usually, although the reflected sound diffusion is propagated, does not reduce reverberation acoustic energy, so the uncontrollable reverberation time.
The room of most sound recording and playback such as recording room, control room, audiovisual studio, home theater etc., room-sized is smaller usually, but very high to the requirement of tonequality.Promptly require in listening area last time the sound level of reflected sound will be, but need certain of short duration reverberation time,, avoid auditory fatigue with the comfortableness that guarantees that the auditor works long hours far below the direct sound sound level.So can not adopt the full sound absorption design as sound attenuation room, and should make the sound absorption and the scattering phase combination of wall.But in this class cubicle,,, can increase the difficulty of design, and be unfavorable for effective control of sound if sound absorption is provided by different walls respectively with scattering because the wall area is limited.
[summary of the invention]
Task of the present utility model overcomes the deficiencies in the prior art exactly, and a kind of fabric side diffusion sound absorber is provided, and has sound absorption and dispersion effect.
The utility model adopts following technical proposals: a kind of fabric side diffusion sound absorber, it is characterized in that: described diffusion sound absorber profile is the hollow gengon of sealing, diffusion sound absorber inside is provided with sound absorption material, with the contacted diffusion sound absorber of sound absorption material surface on have several strip grooves, the surface of strip groove is provided with a layer entrant sound fabric face layer.
Described diffusion sound absorber cross section be shaped as trapezoidal or right-angled trapezium.
Operating principle of the present utility model: sound wave can go deep into material internal along porous absorption material, with material generation rubbing action acoustic energy is converted into heat energy.The degree of depth (being the length of right-angled trapezium minor face) of unit weight, thickness, porosity and rear cavity by adjusting material is come at the corresponding sound absorption characteristics of different frequency adjustment.And the surface adopts different MLS sequential structures can adjust the centre frequency of sound scattering, effectively spreads unabsorbed acoustic energy.The exponent number of MLS sequence, the length of unit and the degree of depth are relevant with the wavelength of diffuse sound, have determined the centre frequency of sound scattering.Its independent permutation and combination is tooth-shape structure or the two assembled arrangement is isosceles triangular structure, effectively the sound of scattering medium and low frequency.
The beneficial effects of the utility model, novel structure, simple, combination flexibly, and is easy for installation, has sound absorption and scattering double effects concurrently, guarantee the comfortableness that the auditor works long hours, avoid auditory fatigue, can effectively control sound, eliminate harmful strong reflection sound, avoid sound focus, improve speech articulation; In addition, the utility model is made simple, and cost is low, and performance is good, and the room acoustics that is widely used in the room of all kinds of sound recordings and playback such as recording room, control room, audiovisual studio, home theater etc. designs.
[description of drawings]
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the sectional drawing of Fig. 1;
Fig. 3 is another example structure schematic diagram of the present utility model.
Referring to Fig. 1 to Fig. 3,1 is the diffusion sound absorber, and 2 is groove, and 3 is sound absorption material, and 4 is cavity, and 5 is the entrant sound fabric face layer, and 6 is clamping plate, and 7 is cotton felt gasket.
[specific embodiment]
Below in conjunction with the drawings and specific embodiments the utility model is described in detail:
Embodiment one: referring to Fig. 1, Fig. 2, diffusion sound absorber 1 profile is the hollow prismatoid of sealing, diffusion sound absorber cross section be shaped as trapezoidal or right-angled trapezium, diffusion sound absorber inside is provided with sound absorption material 3, sound absorption material can adopt porous materials such as glass wool, rock wool, mineral wool, polyester fiber cotton, wool, wood wool, metallic fiber, with the contacted diffusion sound absorber of sound absorption material surface (promptly spreading the inclined-plane of sound absorber) on have several strip grooves 2, the surface of strip groove is provided with a layer entrant sound fabric face layer 5.
The utility model adopts high-quality entrant sound fabric as finish coat, and structural section is a right-angled trapezium, and groove is formed according to the MLS series arrangement in inner sound absorption material surface, forms the acoustic member that has diffusion and the double characteristic of sound absorption concurrently.Two diffusion sound absorber product mixes can surface texture triangular in shape, more demonstrates good decorate properties.
High-quality entrant sound fabric faced layer can also have good sonolucent finish material for wire lath, plant rattan, perforated plate that perforated percentage is bigger etc.
The sound absorption material of this diffusion sound absorber inside can adopt porous materials such as glass wool, rock wool, mineral wool, polyester fiber cotton, wool, wood wool, metallic fiber, and the degree of depth (being the length of right-angled trapezium minor face) of unit weight, thickness, porosity and rear cavity by adjusting material is come at the corresponding sound absorption characteristics of different frequency adjustment.And the surface adopts different MLS sequential structures can adjust the centre frequency of sound scattering, effectively spreads unabsorbed acoustic energy.The exponent number of MLS sequence, the length of unit and the degree of depth are relevant with the wavelength of diffuse sound, have determined the centre frequency of sound scattering.Its independent permutation and combination is tooth-shape structure or the two assembled arrangement is isosceles triangular structure, effectively the sound of scattering medium and low frequency.This structure elementary cell can make up arbitrarily, satisfies various different demands.
Claims (2)
1. a fabric side spreads sound absorber, it is characterized in that: described diffusion sound absorber profile is the hollow gengon of sealing, diffusion sound absorber inside is provided with sound absorption material, with the contacted diffusion sound absorber of sound absorption material surface on have several strip grooves, the surface of strip groove is provided with a layer entrant sound fabric face layer.
2. fabric side as claimed in claim 1 diffusion sound absorber is characterized in that: described diffusion sound absorber cross section be shaped as trapezoidal or right-angled trapezium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200561542U CN201172897Y (en) | 2008-03-12 | 2008-03-12 | Diffusion sound absorbers on surface of fabric |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200561542U CN201172897Y (en) | 2008-03-12 | 2008-03-12 | Diffusion sound absorbers on surface of fabric |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201172897Y true CN201172897Y (en) | 2008-12-31 |
Family
ID=40200010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200561542U Expired - Fee Related CN201172897Y (en) | 2008-03-12 | 2008-03-12 | Diffusion sound absorbers on surface of fabric |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201172897Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104631636A (en) * | 2015-01-28 | 2015-05-20 | 厦门大学 | Variable mls sound absorbing diffuser |
| CN108074560A (en) * | 2018-01-22 | 2018-05-25 | 深圳可朗声科技有限公司 | Sound absorber and its noise reduction furniture in a kind of broadband room |
-
2008
- 2008-03-12 CN CNU2008200561542U patent/CN201172897Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104631636A (en) * | 2015-01-28 | 2015-05-20 | 厦门大学 | Variable mls sound absorbing diffuser |
| CN108074560A (en) * | 2018-01-22 | 2018-05-25 | 深圳可朗声科技有限公司 | Sound absorber and its noise reduction furniture in a kind of broadband room |
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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: 20081231 Termination date: 20130312 |