摘要
本文分析了一些参量和因素对气流扬声器性能的影响,并进行了实验研究,研制出的小型气流扬声器具有好的频响,声压响应由400—2,000Hz,在离喇叭口2m远处的轴向声压级是120dB;磁间隙的磁通密度高达1.9Wb/m^2,体积小,重量轻。
This paper deals with the additional displacement of the modulation ring of air stream sound source caused by Bernoulli force and gives formulas and charts for calculation. At the same time, the paper discusses the selection of the best parameters and analyses the contribution of different frequency band for speech intelligibility and determines frequency band of a electropneu-matic loudspeaker. Some parameters were tested. The characteristics of the developed electropneu-matic loudspeaker are good. The sound pressure frequency responce is flat between 200 Hz and 2000 Hz. In the magnetic gap the flux density reachs 1.9Wb/M2 and the sound pressure level is 120 dB at a distance of two metres from the born mouth.
出处
《声学学报》
EI
CSCD
北大核心
1990年第2期100-105,共6页
Acta Acustica
