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[null,"3D-スパイラルホーン共振周波数の検証",{"$nulls":5},"2006/2/13"]
[{"$nulls":7},"naao"]
{"$rows_empty":16}
["fhoを求める計算の検証",null,"各ﾃﾞｰﾀは、Takenaka氏HP掲載値を拝借しました。"]
["音速","c(cm/s)",34350,null,"H-75","H-65","H-88","H-125","H-105","ﾛﾎﾞｯﾄ君"]
[]
[null,"空気室容積","Vc(cm3)",null,3000,1800,3600,12400,6900,3500]
[null,"外管内径","Do(cm)",null,7.7,6.7,7.7,12.5,10,19.6]
[null,"内管外径","Di(cm)",null,1.6,1.2,1.6,1.8,1.5,3]
[null,"ｽﾊﾟｲﾗﾙ音道回転数","n",null,1,1.5,1,1,1.5,3]
[null,"ﾎｰﾝ筒長","Lt(cm)",null,15,12.5,15,21,18,28]
[]
[null,"スロート断面積","S(cm2)",null,17,7.4,17,45,23.4,37.35]
[null,"スパイラル音道の最大長","Lh1(cm)",null,31.69026343264141,36.57300616857742,31.69026343264141,49.769908169872416,54.323889803846896,191.72564803107986]
[null,"= nπDo + Lt/(n + 1)"]
[null,"ﾎｰﾝ共振周波数","fhc1(Hz)",null,73.1051178702433,57.96237211913254,66.73553687767715,46.683011845106236,43.195134096875286,40.78665099859811]
[null,"=c/2pai*(S/(Vc*Lh1))^1/2"]
[null,"参考：ﾎｰﾝ内計算空気体積","Vhc(cm3)","=S*L",538.7344783549039,270.6402456474729,538.7344783549039,2239.6458676442585,1271.1790214100172,7160.952953960833]
[]
[null,"ﾎｰﾝ筒長　別計算","Lt2(cm)",null,11.25,10,11.25,15.75,14.4,20.9]
[null,"考え方は、→図"]
{"$rows_empty":7}
[null,"ｷｬﾌﾟﾀｲﾔ厚み合計","Lc(cm)",null,3,3.5,3,3,4,4]
[]
[null,"ﾎｰﾝ出口面積","S2(cm2)",null,22.875,15.125,22.875,56.175,30.174999999999997,66.4]
[null,"ﾎｰﾝ出口断面積→換算r","r(cm)=SQRT(S2/pai)",null,2.698395568936143,2.19418254220788,2.698395568936143,4.22859998774706,3.099193575044302,4.597366250648702]
[null,"ﾎｰﾝ内実計算空気体積","Vha(cm3)",null,511.85849469233705,311.6693000870158,511.85849469233705,2142.0157834616257,1083.955813389199,6605.12119803923]
[null,"=(Do^2-Di^2)*pai/4 *(Lt2-Lc+1.2r)"]
[null,"ﾎｰﾝ内体積から逆算した音道長","Lh2(cm)","=Vha/S",30.109323217196298,42.11747298473186,30.109323217196298,47.60035074359168,46.32289800808543,176.84394104522704]
[null,"ﾎｰﾝ共振周波数","fhc2(Hz)",null,74.9998179971846,54.01263034420934,68.46515354306656,47.735031218376115,46.77700326860105,42.468122512575086]
[null,"=c/2pai*(S/(Vc*Lh2))^1/2"]
[]
[]
[null,"実測ﾎｰﾝ共振周波数","fho(Hz)",null,"？",55,60,45,45,"43 ?"]
[null,"実測impedance第1ﾋﾟｰｸ周波数","fhi(Hz)",null,null,48,null,38,null,39.5]
[]
[null,null,null,"ここの取り方でかなり変わるが・・"]