摘要
微穿孔吸声体(MPA)的吸声带宽与其声阻直接有关。半吸声带宽随其声阻增加而增加很大,但吸声系数可能小。如 用吸声系数为0.5的带宽,虽然声阻大时增加较慢,但更现实。
Half absorption band width of MPA increases rapidly with its resistance, but the absorption coefficient might be low at half absorbtion. If absorbtion coefficient of 0.5 is taken as the lower limit, the overall absorption increases slower with the increases of resistance, but performence is bether.
出处
《声学学报》
EI
CSCD
北大核心
2003年第6期561-562,共2页
Acta Acustica
