Optimal Sound Absorption Performance of Metal Wedge for Anechoic Chamber

• Customization: Available
• Color and Finish: Customized
• Environment Friendly: Eco-friendly Production
• Model NO.: NCC-10
• Environmental Certification: E1
• Installation Method: Fix Metal
• Material Composition: Fiberglass and Metal
• Material Type: Acoustic Wedge
• Size: Custom Sizes
• Thickness: Customized
• Transport Package: Wooden Package
• Specification: Size can be ordered according to the situation
• Trademark: NCC
• Origin: China
• HS Code: 6806900000
• Production Capacity: 2000 /Month

Product Description

Product Description

NCC Metallic Acoustic Wedge--Mainly used in fully and semi-muffled laboratories, the use of its materials (such as fiberglass cotton) as well as unique shapes, the constructed rooms offer many unique advantages.
 

 

NCC Boheng Fabric Splitting, using fire-resistant cloth to wrap the splitting bracket, filled with soundproof cotton inside, can absorb medium to high sound frequencies.The internal filling materials of the fabric cutting edge include yellow standard cotton, white formaldehyde free glass cotton, environmentally friendly fiber cotton, etc; It is more widely used in various laboratories, with a service life of about 30 years. When the service life is reached, it can be purchased separately at a lower cost, and its sound reception effect has greater advantages compared to other acoustic products.
 

Detailed Photos

Sound absorbing cotton filling

The interior is filled with sound absorption and insulation material, and adopts reasonable structure to absorb sound waves.

 

Fabric wedge

The use of fireproof cloth, noise suppression and fire prevention, and moderate weight, easy to install on the wall and ceiling.

Metal wedge

Usually used galvanized steel plate and aluminum alloy plate, and the use of non-woven cloth wrapped sound-absorbing cotton, dirty and durable, long service life.

 

Wedge mounting structure 

Sound wedge generally has a certain thickness of the base, easy to install, and easy to achieve the best sound absorption effect, generally sound wedge and the wall will leave some gaps, forming a cavity, will make the cutoff frequency is lower.

 

Staggered arrangement 

Increase the absorption area of sound waves, so that the sound waves incident on it are almost completely absorbed without reflection, and the main use is to build a full anechoic chamber and a semi-anechoic chamber.

 

Product Parameters

Model: 400*400*600

Frequency(Hz)	100	125	160	200	250	315	400
Absorption coefficient	0.998	0.992	0.988	0.997	0.992	0.997	0.998

Model: 400*400*300
 

Frequency(Hz)	100	125	160	200	250	315	400
Absorption coefficient	0.708	0.909	0.974	0.983	0.967	0.965	0.993

Model: 1200* 1200*1200mm
 

Frequency,Hz	40	50	63	80	100	125	160	200	250
Absorption Coefficient	0.696	0.893	0.993	0.994	0.998	0.997	0.994	0.998	0.998

 

• Sound absorbing wedge is a kind of special sound absorbing structural material for strong sound absorbing field, the use of porous (or fibrous) material molding cutting, made into a cone or wedge sound absorber, firm without deformation.

• Sound absorption wedge is suitable for strong airflow environment, the main object is high-quality anechoic chamber, the absorption of low frequency is more effective, can eliminate standing waves, to eliminate the requirements of echo, low cut-off frequency sound absorption coefficient greater than 0.99.

• The sound insulation wall of the anechoic chamber is installed with an anechoic wedge, which can form a smooth layer connection, so that the uncertainty and irregularity of noise acoustic wave reflection can be extended, and the sound absorption performance of the anechoic chamber can be improved.

• Compared with ordinary acoustic wedge, the V-shaped and W-shaped acoustic wedge made of polyester has the characteristics of smaller occupancy volume and more reasonable price.

For each individual project, it is possible to select a panel design which has the required sound transmission loss and sound absorption ratings. 
 

Laboratory Testing

NCC Acoustic Laboratory - A Laboratory Professionaly Committed to Serving Customers

         We exert every ounce of our strength to construct a high-end, avant-garde laboratory endowed with autonomous control capabilities.   For all bespoke products, be it in terms of specifications, dimensions, or acoustic requisites, prior to entering the mass production phase, we shall enforce rigorous and meticulous pre-production sample testing procedures.   Only upon thorough confirmation that all indicators are up to par will we invest a considerable amount of human and material resources to embark on mass production endeavors, thereby effectively guaranteeing that each and every batch of large-scale goods delivered to clients possesses outstanding quality.

 

 The fabricated product samples are positioned within the spacious window of the laboratory and securely fastened through professional sealing measures.   Through precise adjustment of the relevant parameters and concurrent utilization of advanced and precise apparatuses for comprehensive and profound testing, it is ultimately ensured that the products can fully comply with the exacting requirements of customers.
    As depicted in the illustration, the external noise of the laboratory attains 80.1 dB, while through random measurement, the internal acoustic laboratory drops to 36.4 dB or even lower.   The elevated standard of sound insulation not only ensures the accuracy of the experimentation but also furnishes a robust guarantee for the test outcomes.

 

 

Testing Report

All Reports can meet the American Standars, the sound testing we did with Intertek.

Packaging & Shipping