A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention discloses a full-frequency sound absorption structure which sequentially comprises a first sound absorption structure for absorbing medium-high frequency, a second sound absorption structure for absorbing low frequency and a third sound absorption structure for absorbing medium-high frequency and increasing the low-frequency sound absorption diving depth of the second sound absorption structure from outside to inside. The total thickness of the sound absorption structure is about 100mm, and the outer polyester fiber sound absorption cotton absorbs medium and high frequencies; the 0.5-1.5 mm steel plate absorbs low frequency through sheet resonance, and the specific thickness should be determined according to room sound source characteristics, for example, 1.5 mm steel plates are suggested to be adopted for mega bass such as a subwoofer, and 0.5 mm steel plates are suggested to be adopted for human voice such as a recording studio; according to the sound absorption characteristic of the steel plate, the surface density of the steel plate with the thickness of 0.5-1.5 mm is 3.9 kg/# imgabs 0 #-11.7 kg/# imgabs 1 #, and the resonance sound absorption frequency of the thin plate is 80-150 Hz. The innermost layer of the frequency range is made of foaming melamine sound absorption cotton with high flow resistance, so that the medium-high frequency sound absorption amount can be improved, and the steel plate can be helped to increase the low-frequency sound absorption diving depth.
本发明公开一种全频吸声结构，由外至内依次包括吸收中高频的吸音结构一、吸收低频的吸音结构二以及即吸收中高频又增加吸音结构二低频吸声下潜深度的吸音结构三。吸声结构总厚度约100mm左右，外层聚酯纤维吸声棉吸收中高频；0.5~1.5mm钢板通过薄板共振吸收低频，具体厚度应根据房间声源特性确定，如：低音炮等重低音建议采用1.5mm钢板，录音棚等人声为主建议采用0.5mm钢板；钢板吸声特性，0.5~1.5mm钢板面密度3.9kg/#imgabs0#~11.7kg/#imgabs1#，薄板共振吸声频率80~150Hz。频率范围最内层采用流阻较高的发泡三聚氰胺吸音棉，即能提高中高频吸声量，还能帮助钢板增加低频吸声下潜深度。
The invention discloses a full-frequency sound absorption structure which sequentially comprises a first sound absorption structure for absorbing medium-high frequency, a second sound absorption structure for absorbing low frequency and a third sound absorption structure for absorbing medium-high frequency and increasing the low-frequency sound absorption diving depth of the second sound absorption structure from outside to inside. The total thickness of the sound absorption structure is about 100mm, and the outer polyester fiber sound absorption cotton absorbs medium and high frequencies; the 0.5-1.5 mm steel plate absorbs low frequency through sheet resonance, and the specific thickness should be determined according to room sound source characteristics, for example, 1.5 mm steel plates are suggested to be adopted for mega bass such as a subwoofer, and 0.5 mm steel plates are suggested to be adopted for human voice such as a recording studio; according to the sound absorption characteristic of the steel plate, the surface density of the steel plate with the thickness of 0.5-1.5 mm is 3.9 kg/# imgabs 0 #-11.7 kg/# imgabs 1 #, and the resonance sound absorption frequency of the thin plate is 80-150 Hz. The innermost layer of the frequency range is made of foaming melamine sound absorption cotton with high flow resistance, so that the medium-high frequency sound absorption amount can be improved, and the steel plate can be helped to increase the low-frequency sound absorption diving depth.
本发明公开一种全频吸声结构，由外至内依次包括吸收中高频的吸音结构一、吸收低频的吸音结构二以及即吸收中高频又增加吸音结构二低频吸声下潜深度的吸音结构三。吸声结构总厚度约100mm左右，外层聚酯纤维吸声棉吸收中高频；0.5~1.5mm钢板通过薄板共振吸收低频，具体厚度应根据房间声源特性确定，如：低音炮等重低音建议采用1.5mm钢板，录音棚等人声为主建议采用0.5mm钢板；钢板吸声特性，0.5~1.5mm钢板面密度3.9kg/#imgabs0#~11.7kg/#imgabs1#，薄板共振吸声频率80~150Hz。频率范围最内层采用流阻较高的发泡三聚氰胺吸音棉，即能提高中高频吸声量，还能帮助钢板增加低频吸声下潜深度。
Full-frequency sound absorption structure
一种全频吸声结构
XU JINGZHENG (author)
2024-11-22
Patent
Electronic Resource
Chinese
IPC:
E04B
Allgemeine Baukonstruktionen
,
GENERAL BUILDING CONSTRUCTIONS
/
B32B
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
,
Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse
/
C08K
Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe
,
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS
/
C08L
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
,
Massen auf Basis makromolekularer Verbindungen
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