\u898f\u683c\u3067\u306f\u4e00\u822c\u306b1\/b\u3092\u300c\u5e2f\u57df\u5e45\u6307\u5b9a\u5b50\u300d\u3068\u3057\u3066\u7528\u3044\u30011\/1\u304c1\u30aa\u30af\u30bf\u30fc\u30d6\u30011\/3\u304c1\/3\u30aa\u30af\u30bf\u30fc\u30d6\u306a\u3069\u3068\u8868\u3057\u307e\u3059. [1] \u3044\u3063\u305f\u3093(G, b, fr)\u304c\u9078\u3070\u308c\u308c\u3070\u3001\u5e2f\u57df\u96c6\u5408\u5168\u4f53(\u4e2d\u5fc3\u3068\u7aef)\u306f\u6570\u5b66\u7684\u306b\u4e00\u610f\u306b\u5b9a\u307e\u308a\u307e\u3059.<\/p>\n\n

\u53b3\u5bc6\u5024\u3068\u516c\u79f0\u5024:\u540c\u3058\u5e2f\u57df\u306b\u4e8c\u3064\u306e\u300c\u4e2d\u5fc3\u5468\u6ce2\u6570\u300d\u304c\u73fe\u308c\u308b\u7406\u7531<\/h5>\n\n

\u300c\u53b3\u5bc6\u300d\u4e2d\u5fc3\u5468\u6ce2\u6570\u306f\u3001\u6570\u5b66\u7684\u306b\u4e00\u8cab\u3057\u305f\u5b9a\u7fa9\u3084\u30d5\u30a3\u30eb\u30bf\u8a2d\u8a08\u306b\u7528\u3044\u3089\u308c\u3001\u300c\u516c\u79f0\u300d\u5024\u306f\u30e9\u30d9\u30eb\u4ed8\u3051\u3084\u5831\u544a\u306b\u7528\u3044\u3089\u308c\u307e\u3059. [1] ISO 266:1997\u306f\u3001ISO 3\u306e\u63a8\u5968\u6570\u5217(R10)\u306b\u57fa\u3065\u304d\u30011000 Hz\u3092\u57fa\u6e96\u3068\u3057\u305f\u97f3\u97ff\u6e2c\u5b9a\u7528\u306e\u63a8\u5968\u5468\u6ce2\u6570\u3092\u5b9a\u7fa9\u3057\u3066\u3044\u307e\u3059. [2]<\/p>\n\n

\u305d\u306e\u7d50\u679c\u3001\u53b3\u5bc6\u306a\u7b49\u6bd4\u6570\u5217\u306f\u3001\u901a\u5e38\u6b21\u306e\u3088\u3046\u306a\u898b\u6163\u308c\u305f\u516c\u79f0\u5024\u3067\u30e9\u30d9\u30eb\u4ed8\u3051\u3055\u308c\u307e\u3059:<\/p>\n\n

20, 25, 31.5, 40, 50, 63, 80, 100, 125, 160, ..., 1k, 1.25k, 1.6k, 2k, 2.5k, 3.15k, ..., 20k.<\/p>\n\n

\u5b9f\u88c5\u4e0a\u306e\u30d2\u30f3\u30c8:\u307e\u305a\u53b3\u5bc6\u306a\u4e2d\u5fc3\u5468\u6ce2\u6570\u304b\u3089\u5e2f\u57df\u7aef\u3092\u8a08\u7b97\u3057\u3001\u516c\u79f0\u5024\u3078\u306e\u4e38\u3081\uff0f\u8868\u793a\u306f\u305d\u306e\u5f8c\u306b\u884c\u3044\u307e\u3059. \u3053\u308c\u306b\u3088\u308a\u3001\u898f\u683c\u304b\u3089\u5916\u308c\u3066\u3044\u3063\u3066\u3057\u307e\u3046\u3053\u3068\u3092\u9632\u3052\u307e\u3059.<\/p>\n\n

\u30d9\u30fc\u30b910 vs \u30d9\u30fc\u30b92:\u306a\u305c\u898f\u683c\u306f\u53b3\u5bc6\u306a2:1\u30aa\u30af\u30bf\u30fc\u30d6\u306b\u3053\u3060\u308f\u3089\u306a\u3044\u306e\u304b<\/h5>\n\n

\u300c\u30aa\u30af\u30bf\u30fc\u30d6\u300d\u306f\u3057\u3070\u3057\u30702:1\u3068\u3057\u3066\u6349\u3048\u3089\u308c\u307e\u3059\u304c\u3001IEC 61260-1\u306fG=2\u3067\u306f\u306a\u304f\u3001\u30d9\u30fc\u30b910(G=10^(3\/10))\u3092\u63a1\u7528\u3057\u3066\u3044\u307e\u3059. \u4e3b\u306a\u7406\u7531\u306b\u306f\u6b21\u306e\u3088\u3046\u306a\u3082\u306e\u304c\u3042\u308a\u307e\u3059:<\/p>\n\n

\n
• 10\u9032\u306e\u63a8\u5968\u6570\u5217\u3068\u306e\u6574\u5408(ISO 266\u306fR10\u306b\u7d50\u3073\u4ed8\u3051\u3089\u308c\u3066\u3044\u307e\u3059). [2]<\/li>\n\n\n\n
• \u56fd\u969b\u7684\u306a\u4e00\u8cab\u6027:IEC 61260-1:2014\u306f\u30d9\u30fc\u30b910\u3092\u898f\u5b9a\u3057\u3066\u304a\u308a\u3001\u30d9\u30fc\u30b92\u8a2d\u8a08\u306f\u57fa\u6e96\u5468\u6ce2\u6570\u304b\u3089\u96e2\u308c\u305f\u9818\u57df\u3067\u9069\u5408\u6027\u3092\u7dad\u6301\u3057\u306b\u304f\u3044\u3053\u3068\u304c\u793a\u3055\u308c\u3066\u3044\u307e\u3059. [1]<\/li>\n<\/ul>\n\n

  \u30d9\u30fc\u30b910\u3067\u306f\u30011\/3\u30aa\u30af\u30bf\u30fc\u30d6\u306f10^(1\/10) \u2248 1.258925(1\/10\u30c7\u30b1\u30fc\u30c9\u3068\u3082\u89e3\u91c8\u53ef\u80fd)\u306b\u5bfe\u5fdc\u3057\u30011\u30c7\u30b1\u30fc\u30c9\u3042\u305f\u308a\u6b63\u78ba\u306b10\u500b\u306e\u4e09\u5206\u306e\u4e00\u30aa\u30af\u30bf\u30fc\u30d6\u5e2f\u57df\u3068\u3044\u3046\u304d\u308c\u3044\u306a\u5bfe\u5fdc\u304c\u5f97\u3089\u308c\u307e\u3059.<\/p>\n\n

  \u300c10\u500b\u306e\u4e09\u5206\u306e\u4e00\u30aa\u30af\u30bf\u30fc\u30d6\u5e2f\u57df\uff1d1\u30c7\u30b1\u30fc\u30c9\u300d:\u3053\u308c\u304c\u91cd\u8981\u306a\u7406\u7531<\/h5>\n\n

  \u30d9\u30fc\u30b910\u306e\u4e09\u5206\u306e\u4e00\u30aa\u30af\u30bf\u30fc\u30d6\u9593\u9694\u3067\u306f\u3001\u5404\u30b9\u30c6\u30c3\u30d7\u3067\u5468\u6ce2\u6570\u306fr = 10^(1\/10)\u500d\u3055\u308c\u307e\u3059. \u3057\u305f\u304c\u3063\u3066:<\/p>\n\n

  \n
  • \u9023\u7d9a\u3059\u308b10\u500b\u306e\u4e09\u5206\u306e\u4e00\u30aa\u30af\u30bf\u30fc\u30d6\u5e2f\u57df\u3067\u3001\u5468\u6ce2\u6570\u306f\u6b63\u78ba\u306b10\u500d(1\u30c7\u30b1\u30fc\u30c9)\u306b\u306a\u308a\u307e\u3059.<\/li>\n\n\n\n
  • \u3053\u308c\u306fISO 266\uff0fR10\u306e\u6163\u7fd2\u3068\u4e00\u81f4\u3057\u3066\u304a\u308a\u3001\u8868\u306e\u4f5c\u6210\u3084\u30d7\u30ed\u30c3\u30c8\u3001\u30b3\u30df\u30e5\u30cb\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u7c21\u7d20\u5316\u3057\u307e\u3059.<\/li>\n\n\n\n
  • \u6a19\u6e96\u5316\u3067\u306f\u3001\u7d14\u7c8b\u306a\u6570\u5b66\u7684\u53b3\u5bc6\u3055\u3068\u540c\u3058\u304f\u3089\u3044\u3001\u53ef\u8aad\u6027\u3068\u4e00\u8cab\u6027\u304c\u91cd\u8996\u3055\u308c\u307e\u3059.<\/li>\n<\/ul>\n\n

    <\/figure>\n\n

    \u56f33:\u30d9\u30fc\u30b910\u306e\u4e09\u5206\u306e\u4e00\u30aa\u30af\u30bf\u30fc\u30d6\u9593\u9694-1\u30c7\u30b1\u30fc\u30c9(\u5468\u6ce2\u6570\u00d710)\u3042\u305f\u308a\u7b49\u6bd4\u30b9\u30c6\u30c3\u30d7\u304c10\u500b<\/strong><\/p>\n\n

    ANSI S1.11\uff0fANSI\/ASA S1.11:\u8a31\u5bb9\u30af\u30e9\u30b9\u3068\u904e\u6e21\u4fe1\u53f7\u306b\u95a2\u3059\u308b\u6ce8\u610f<\/h3>\n\n

    ANSI S1.11(\u304a\u3088\u3073IEC 61260-1\u3068\u6574\u5408\u3057\u305f\u5f8c\u7d9a\u306eANSI\/ASA\u7248)\u306f\u3001\u30d5\u30a3\u30eb\u30bf\u30bb\u30c3\u30c8\u3084\u30a2\u30ca\u30e9\u30a4\u30b6\u306e\u6027\u80fd\u8981\u4ef6\u3092\u898f\u5b9a\u3057\u3066\u304a\u308a\u3001\u8a31\u5bb9\u30af\u30e9\u30b9(\u7248\u306b\u3088\u3063\u3066\u30af\u30e9\u30b90\/1\/2\u306a\u3069)\u3082\u542b\u307e\u308c\u307e\u3059. [3][4]<\/p>\n\n

    ANSI\u6587\u66f8\u306b\u306f\u5b9f\u52d9\u4e0a\u306e\u6ce8\u610f\u3068\u3057\u3066\u3001\u904e\u6e21\u4fe1\u53f7\u3067\u306f\u3001\u898f\u683c\u306b\u9069\u5408\u3057\u305f\u7570\u306a\u308b\u5b9f\u88c5\u540c\u58eb\u3067\u3082\u7570\u306a\u308b\u7d50\u679c\u306b\u306a\u308a\u3046\u308b\u3053\u3068\u304c\u660e\u8a18\u3055\u308c\u3066\u3044\u307e\u3059. [3] This highlights that time response (group delay, ringing, averaging time constants) matters for transient analysis.<\/p>\n\n

    \u30af\u30e9\u30b9\uff0f\u30de\u30b9\u30af\uff0f\u6709\u52b9\u5e2f\u57df\u5e45\u306f\u5b9f\u969b\u306b\u306f\u4f55\u3092\u5236\u5fa1\u3057\u3066\u3044\u308b\u306e\u304b?<\/h3>\n\n

    \u300c1\/3\u30aa\u30af\u30bf\u30fc\u30d6\u5e2f\u57df\u3092\u4f7f\u3063\u305f\u300d\u3068\u8a00\u3046\u3053\u3068\u306f\u3001\u516c\u79f0\u306e\u5e2f\u57df\u7aef\u3092\u4f7f\u3063\u305f\u3068\u3044\u3046\u3060\u3051\u306e\u610f\u5473\u3067\u306f\u3042\u308a\u307e\u305b\u3093. \u898f\u683c\u306f\u3001\u6b21\u306e\u70b9\u3092\u5236\u7d04\u3059\u308b\u3053\u3068\u3067\u3001\u7570\u306a\u308b\u6a5f\u5668\uff0f\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u9593\u3067\u7d50\u679c\u304c\u6bd4\u8f03\u53ef\u80fd\u306b\u306a\u308b\u3053\u3068\u3092\u76ee\u6307\u3057\u3066\u3044\u307e\u3059:<\/p>\n\n

    \n
    • \u5468\u6ce2\u6570\u306e\u914d\u7f6e:\u4e2d\u5fc3\u5468\u6ce2\u6570\u306e\u5217\u3068\u5e2f\u57df\u7aef\u306e\u5b9a\u7fa9(\u30d9\u30fc\u30b910\u3001\u53b3\u5bc6\u5024\uff0f\u516c\u79f0\u5024\u3001f1\uff0ff2).<\/li>\n\n\n\n
    • \u632f\u5e45\u5fdc\u7b54\u306e\u8a31\u5bb9\u5dee(\u30de\u30b9\u30af):\u901a\u904e\u5e2f\u57df\u8fd1\u508d\u3067\u8a31\u5bb9\u3055\u308c\u308b\u30ea\u30c3\u30d7\u30eb\u3068\u3001\u4e2d\u5fc3\u5468\u6ce2\u6570\u304b\u3089\u96e2\u308c\u305f\u9818\u57df\u3067\u5fc5\u8981\u306a\u6e1b\u8870\u91cf.<\/li>\n\n\n\n
    • \u5e83\u5e2f\u57df\u96d1\u97f3\u306b\u5bfe\u3059\u308b\u30a8\u30cd\u30eb\u30ae\u30fc\u306e\u4e00\u8cab\u6027:\u5b9f\u88c5\u9593\u3067\u5e2f\u57df\u30ec\u30d9\u30eb\u304c\u6bd4\u8f03\u53ef\u80fd\u306b\u306a\u308b\u3088\u3046\u3001\u6709\u52b9\u5e2f\u57df\u5e45\u306b\u5236\u7d04\u3092\u8a2d\u3051\u307e\u3059.<\/li>\n<\/ul>\n\n

      \u6709\u52b9\u5e2f\u57df\u5e45\u304c\u91cd\u8981\u306a\u306e\u306f\u3001\u5b9f\u969b\u306e\u30d5\u30a3\u30eb\u30bf\u304c\u7406\u60f3\u7684\u306a\u30d6\u30ea\u30c3\u30af\u30a6\u30a9\u30fc\u30eb\u3067\u306f\u306a\u3044\u304b\u3089\u3067\u3059. \u5e83\u5e2f\u57df\u96d1\u97f3\u306b\u3064\u3044\u3066\u306f\u3001\u51fa\u529b\u30a8\u30cd\u30eb\u30ae\u30fc\u306f\u222b|H(f)|^2 S(f)df\u306b\u4f9d\u5b58\u3057\u307e\u3059. \u901a\u904e\u5e2f\u57df\u30ea\u30c3\u30d7\u30eb\u3084\u30b9\u30ab\u30fc\u30c8\u90e8\u3001\u30ed\u30fc\u30eb\u30aa\u30d5\u306e\u9055\u3044\u306b\u3088\u3063\u3066\u3001\u7cfb\u7d71\u7684\u306a\u30aa\u30d5\u30bb\u30c3\u30c8\u304c\u751f\u3058\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059. \u898f\u683c\u306f\u6709\u52b9\u5e2f\u57df\u5e45\u3092\u5236\u7d04\u3059\u308b\u3053\u3068\u3067\u3001\u305d\u306e\u3088\u3046\u306a\u30aa\u30d5\u30bb\u30c3\u30c8\u304c\u8a31\u5bb9\u7bc4\u56f2\u5185\u306b\u53ce\u307e\u308b\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059. [1][3][4]<\/p>\n\n

      \u904e\u6e21\u4fe1\u53f7\u306b\u95a2\u3059\u308b\u6ce8\u610f\u306f\u77db\u76fe\u3067\u306f\u3042\u308a\u307e\u305b\u3093.\u30de\u30b9\u30af\u306f\u4e3b\u306b\u5b9a\u5e38\u72b6\u614b\u306e\u5468\u6ce2\u6570\u9818\u57df\u3067\u306e\u6319\u52d5\u3092\u5236\u7d04\u3059\u308b\u4e00\u65b9\u3067\u3001\u904e\u6e21\u5fdc\u7b54\u306f\u4f4d\u76f8\uff0f\u7fa4\u9045\u5ef6\u3001\u30ea\u30f3\u30ae\u30f3\u30b0\u3001\u6642\u9593\u5e73\u5747\u306b\u5f37\u304f\u4f9d\u5b58\u3059\u308b\u305f\u3081\u3067\u3059. [3]<\/p>\n\n

      \u6570\u5b66:\u5e2f\u57df\u5b9a\u7fa9\u3001\u5e2f\u57df\u5e45\u3001Q\u3001\u304a\u3088\u3073\u5e2f\u57df\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u4ed8\u3051<\/strong><\/h2>\n\n

      CPB\u3068\u5bfe\u6570\u8ef8\u4e0a\u306e\u7b49\u9593\u9694\u914d\u7f6e<\/h3>\n\n

      CPB\u306f\u3001\u5bfe\u6570\u5468\u6ce2\u6570\u306b\u304a\u3051\u308b\u7b49\u5e45\u914d\u7f6e\u3068\u540c\u5024\u3067\u3059. If u = log(f), then every band spans a fixed \u0394u. \u591a\u304f\u306e\u30b9\u30da\u30af\u30c8\u30eb(\u4f8b\u3048\u30701\/f\u578b)\u306f\u3001\u5bfe\u6570\u5468\u6ce2\u6570\u3067\u898b\u308b\u3068\u3088\u308a\u6ed1\u3089\u304b\u3067\u7d71\u8a08\u7684\u306b\u5b89\u5b9a\u3057\u3066\u898b\u3048\u307e\u3059.<\/p>\n\n

      \u5e7e\u4f55\u5e73\u5747\u5b9a\u7fa9\u304b\u3089\u5c0e\u304b\u308c\u308b\u5e2f\u57df\u7aef\u5f0f(\u4e00\u822c\u7684\u306a1\/b\u5f62)<\/h3>\n\n

      IEC\u3067\u306f\u3001\u4e2d\u5fc3\u5468\u6ce2\u6570\u3092\u5e2f\u57df\u7aef\u306e\u5e7e\u4f55\u5e73\u5747fm = sqrt(f1 f2)\u3068\u3057\u3066\u5b9a\u7fa9\u3057\u307e\u3059. [1] 1\/b\u30aa\u30af\u30bf\u30fc\u30d6\u5e2f\u57df\u3067\u306f\u3001\u5e2f\u57df\u7aef\u306e\u6bd4\u306f\u901a\u5e38f2\/f1 = G^(1\/b)\u3068\u306a\u308a\u3001\u3053\u3053\u3067G\u306f\u30aa\u30af\u30bf\u30fc\u30d6\u6bd4\u3067\u3059. \u3053\u306e\u3068\u304d:<\/p>\n\n

      <\/figure>\n\n

      <\/figure>\n\n

      <\/figure>\n\n

      <\/figure>\n\n

      \u30d9\u30fc\u30b910\u306e\u4e09\u5206\u306e\u4e00\u30aa\u30af\u30bf\u30fc\u30d6(b=3)\u306e\u5834\u5408:G=10^(3\/10). \u96a3\u63a5\u3059\u308b\u4e2d\u5fc3\u5468\u6ce2\u6570\u306e\u6bd4\u306fr = G^(1\/3) = 10^(1\/10) \u2248 1.258925\u3067\u3042\u308a\u3001\u5e2f\u57df\u7aef\u306e\u500d\u7387\u306fk = 10^(1\/20) \u2248 1.122018\u3067\u3059.<\/p>\n\n

      Q\u30d5\u30a1\u30af\u30bf\u3068\u5206\u89e3\u80fd:\u30aa\u30af\u30bf\u30fc\u30d6\u5206\u6790\u306f\u5b9aQ\u5206\u6790\u3067\u3042\u308b<\/h5>\n\n

      Q = fm \/ (f2 \u2212 f1)\u3068\u5b9a\u7fa9\u3057\u307e\u3059. CPB\u5e2f\u57df\u3067\u306f\u0394f = f2 \u2212 f1\u306ffm\u3068\u3068\u3082\u306b\u30b9\u30b1\u30fc\u30eb\u3059\u308b\u305f\u3081\u3001Q\u306f\u5468\u6ce2\u6570\u306b\u306f\u4f9d\u5b58\u305b\u305a\u3001b\u3068G\u306e\u307f\u306b\u4f9d\u5b58\u3057\u307e\u3059.<\/p>\n\n

      <\/figure>\n\n

      <\/figure>\n\n

      <\/figure>\n\n

      \u7c21\u6613\u30ea\u30d5\u30a1\u30ec\u30f3\u30b9(\u30d9\u30fc\u30b910\u3001fr=1000 Hz):<\/p>\n\n

      \u5206\u6570\u30aa\u30af\u30bf\u30fc\u30d6<\/td>	\u5e2f\u57df\u6bd4 f2\/f1<\/td>	\u76f8\u5bfe\u5e2f\u57df\u5e45 \u0394f\/fm<\/td>	Q = fm\/\u0394f<\/td><\/tr>
      1\/1<\/td>	1.995262<\/td>	0.704592<\/td>	1.419<\/td><\/tr>
      1\/2<\/td>	1.412538<\/td>	0.347107<\/td>	2.881<\/td><\/tr>
      1\/3<\/td>	1.258925<\/td>	0.230768<\/td>	4.333<\/td><\/tr>
      1\/6<\/td>	1.122018<\/td>	0.115193<\/td>	8.681<\/td><\/tr>
      1\/12<\/td>	1.059254<\/td>	0.057573<\/td>	17.369<\/td><\/tr><\/tbody><\/table><\/figure>\n\n \u89e3\u91c8:1\/3\u30aa\u30af\u30bf\u30fc\u30d6\u3067\u306fQ\u22484.33\u3067\u3042\u308a\u3001\u5404\u5e2f\u57df\u306e\u5e45\u306f\u4e2d\u5fc3\u5468\u6ce2\u6570\u306b\u5bfe\u3057\u3066\u304a\u3088\u305d23%\u3067\u3059. \u3088\u308a\u7d30\u304b\u3044\u5e2f\u57df(1\/6, 1\/12\u306a\u3069)\u306f\u5206\u89e3\u80fd\u304c\u9ad8\u304f\u306a\u308a\u307e\u3059\u304c\u3001\u30e9\u30f3\u30c0\u30e0\u96d1\u97f3\u306b\u5bfe\u3059\u308b\u5206\u6563\u304c\u5927\u304d\u304f\u306a\u308a\u3001\u4e00\u822c\u306b\u3088\u308a\u9577\u3044\u5e73\u5747\u5316\u6642\u9593\u304c\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059.<\/p>\n\n \u5e2f\u57df\u756a\u53f7\u4ed8\u3051(\u6574\u6570\u30a4\u30f3\u30c7\u30c3\u30af\u30b9)\u3068\u5f0f\u306b\u3088\u308b\u5217\u6319<\/h3>\n\n \u5b9f\u88c5\u3067\u306f\u3001\u6574\u6570\u306e\u5e2f\u57df\u30a4\u30f3\u30c7\u30c3\u30af\u30b9x\u3092\u7528\u3044\u308b\u3053\u3068\u304c\u3088\u304f\u3042\u308a\u307e\u3059. IEC\u3067\u306f\u3001\u3053\u306ex\u304c\u4e2d\u5fc3\u5468\u6ce2\u6570\u306e\u5f0ffm = fr * G^(x\/b)\u306e\u4e2d\u306b\u76f4\u63a5\u73fe\u308c\u307e\u3059. [1] \u3053\u308c\u306b\u3088\u308a\u3001\u5bfe\u8c61\u3068\u3059\u308b\u5468\u6ce2\u6570\u7bc4\u56f2\u3092\u30ab\u30d0\u30fc\u3059\u308b\u5168\u5e2f\u57df\u3092\u5b89\u5b9a\u3057\u3066\u5217\u6319\u3067\u304d\u3001\u9699\u9593\u306e\u306a\u3044\u3001\u898f\u683c\u306b\u4e00\u8cab\u3057\u305f\u5e2f\u57df\u7aef\u304c\u4fdd\u8a3c\u3055\u308c\u307e\u3059.<\/p>\n\n \u30d9\u30fc\u30b910\u306e\u5834\u5408:<\/strong><\/p>\n\n <\/figure>\n\n \u3057\u305f\u304c\u3063\u3066<\/p>\n\n <\/figure>\n\n and you can invert as<\/strong><\/p>\n\n <\/figure>\n\n <\/figure>\n\n \u56f34:\u4ee3\u8868\u7684\u306a\u5206\u6570\u30aa\u30af\u30bf\u30fc\u30d6\u5e2f\u57df(\u30d9\u30fc\u30b910\u306e\u5b9a\u7fa9)\u306b\u5bfe\u3059\u308bQ\u30d5\u30a1\u30af\u30bf<\/strong><\/p>\n\n \u300c\u4e09\u5206\u306e\u4e00\u30aa\u30af\u30bf\u30fc\u30d6\u300d\u306e\u4e8c\u3064\u306e\u610f\u5473:\u30d9\u30fc\u30b92 vs \u30d9\u30fc\u30b910-\u6df7\u540c\u3057\u306a\u3044\u3053\u3068<\/h5>\n\n \u6587\u732e\u306b\u3088\u3063\u3066\u306f2\u30d9\u30fc\u30b9\u3092\u7528\u3044\u3001\u96a3\u63a5\u3059\u308b\u4e2d\u5fc3\u5468\u6ce2\u6570\u304c2^(1\/3)\u306b\u306a\u308b\u3068\u3059\u308b\u3082\u306e\u3082\u3042\u308a\u307e\u3059. IEC 61260-1\u304a\u3088\u3073\u73fe\u4ee3\u306e\u97f3\u97ff\u5206\u91ce\u306e\u591a\u304f\u306e\u5b9f\u52d9\u3067\u306f\u30d9\u30fc\u30b910\u304c\u7528\u3044\u3089\u308c\u3001\u96a3\u63a5\u3059\u308b\u4e2d\u5fc3\u5468\u6ce2\u6570\u306f10^(1\/10)\u3068\u306a\u308a\u307e\u3059. \u7c21\u5358\u306a\u30c1\u30a7\u30c3\u30af\u3068\u3057\u3066\u3001\u516c\u79f0\u4e2d\u5fc3\u5468\u6ce2\u6570\u304c1.0k \u2192 1.25k \u2192 1.6k \u2192 2.0k(R10\u30b9\u30bf\u30a4\u30eb)\u306e\u3088\u3046\u306a\u4e26\u3073\u3067\u3042\u308c\u3070\u3001\u30d9\u30fc\u30b910\u3067\u3042\u308b\u53ef\u80fd\u6027\u304c\u9ad8\u3044\u3068\u8a00\u3048\u307e\u3059.<\/p>\n\n \u5e2f\u57df\u30ec\u30d9\u30eb\u306e\u6570\u5b66\u7684\u5b9a\u7fa9:PSD\u7a4d\u5206\u304b\u3089dB\u5831\u544a\u307e\u3067<\/strong><\/h2>\n\n \u9023\u7d9a\u5468\u6ce2\u6570\u306e\u898b\u65b9:\u5e2f\u57df\u5185\u3067PSD\u3092\u7a4d\u5206\u3059\u308b<\/h3>\n\n \u30aa\u30af\u30bf\u30fc\u30d6\u5e2f\u57df\u30ec\u30d9\u30eb\u306f\u3001\u672c\u8cea\u7684\u306b\u306f\u3042\u308b\u5468\u6ce2\u6570\u5e2f\u57df\u306b\u308f\u305f\u308b\u30d1\u30ef\u30fc\u30b9\u30da\u30af\u30c8\u30eb\u5bc6\u5ea6\u306e\u7a4d\u5206\u3067\u3059. \u97f3\u5727p(t)\u306e\u5834\u5408:<\/p>\n\n <\/figure>\n\n <\/figure>\n\n \u632f\u52d5(\u901f\u5ea6\uff0f\u52a0\u901f\u5ea6)\u306e\u5834\u5408\u3082\u3001\u5358\u4f4d\u3068\u57fa\u6e96\u91cf\u304c\u7570\u306a\u308b\u3060\u3051\u3067\u540c\u69d8\u306e\u8003\u3048\u65b9\u304c\u9069\u7528\u3055\u308c\u307e\u3059.<\/p>\n\n \u91cd\u8981\u306a\u70b9:dB\u306f\u5bfe\u6570\u91cf\u3067\u3042\u308b\u305f\u3081\u3001\u548c\u3084\u5e73\u5747\u306f\u5fc5\u305a\u7dda\u5f62\u306e\u96fb\u529b\uff0f\u5e73\u5747\u4e8c\u4e57\u91cf\u306e\u9818\u57df\u3067\u884c\u3063\u305f\u3046\u3048\u3067\u3001\u6700\u5f8c\u306bdB\u3078\u5909\u63db\u3057\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093.<\/p>\n\n \u4e8c\u3064\u306e\u96e2\u6563\u5b9f\u88c5:\u30d5\u30a3\u30eb\u30bf\u30d0\u30f3\u30afRMS vs FFT\uff0fPSD\u30d3\u30cb\u30f3\u30b0<\/h3>\n\n \u30d5\u30a3\u30eb\u30bf\u30d0\u30f3\u30af\u6cd5:y_b(t)=BandPass_b{x(t)}\u3068\u3057\u3001\u305d\u306e\u5e73\u5747\u4e8c\u4e57mean(y_b^2)\u3092\u5e2f\u57df\u5e73\u5747\u4e8c\u4e57\u5024\u3068\u3057\u3066\u8a08\u7b97\u3057\u307e\u3059(\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u6642\u9593\u5e73\u5747\u3092\u5b9f\u65bd).<\/p>\n\n FFT\uff0fPSD\u30d3\u30cb\u30f3\u30b0\u6cd5:S_pp(f)\u3092(\u30d4\u30ea\u30aa\u30c9\u30b0\u30e9\u30e0\uff0fWelch\u6cd5\u306a\u3069\u3067)\u63a8\u5b9a\u3057\u3001[f1,f2]\u5185\u306e\u30d3\u30f3\u3092\u6570\u5024\u7a4d\u5206\uff0f\u52a0\u7b97\u3057\u307e\u3059.<\/p>\n\n \u9577\u304f\u5b9a\u5e38\u7684\u306a\u4fe1\u53f7\u3067\u5e73\u5747\u3092\u3068\u308c\u3070\u3001\u3053\u308c\u3089\u4e8c\u3064\u306e\u624b\u6cd5\u306e\u7d50\u679c\u306f\u975e\u5e38\u306b\u8fd1\u304f\u306a\u308a\u5f97\u307e\u3059. \u4e00\u65b9\u3001\u904e\u6e21\u3001\u30b9\u30a4\u30fc\u30d7\u3001\u77ed\u6642\u9593\u4e8b\u8c61\u3067\u306f\u3001\u4e21\u8005\u306f\u3057\u3070\u3057\u3070\u7570\u306a\u308b\u7d50\u679c\u3092\u751f\u3058\u307e\u3059.<\/p>\n\n \u81ea\u5206\u304c\u6271\u3063\u3066\u3044\u308b\u30b9\u30da\u30af\u30c8\u30eb\u304c\u4f55\u304b\u3092\u660e\u78ba\u306b\u3059\u308b:\u632f\u5e45\u3001\u96fb\u529b\u3001PSD(\u304a\u3088\u3073dB\/Hz)<\/strong><\/p>\n\n \n \u632f\u5e45\u30b9\u30da\u30af\u30c8\u30eb|X(f)|:\u632f\u5e45\u5358\u4f4d(\u4f8b:Pa)\u3067\u8868\u3055\u308c\u3001\u30c8\u30fc\u30f3\uff0f\u9ad8\u8abf\u6ce2\u306b\u6709\u7528\u3067\u3059.<\/li>\n\n\n\n \u30d1\u30ef\u30fc\u30b9\u30da\u30af\u30c8\u30eb|X(f)|\u00b2:\u5e73\u5747\u4e8c\u4e57\u5358\u4f4d(Pa\u00b2)\u3067\u3059.<\/li>\n\n\n\n \u30d1\u30ef\u30fc\u30b9\u30da\u30af\u30c8\u30eb\u5bc6\u5ea6(PSD):Hz\u3042\u305f\u308a\u306e\u5e73\u5747\u4e8c\u4e57\u91cf(Pa\u00b2\/Hz)\u3067\u8868\u3055\u308c\u3001\u96d1\u97f3\u306b\u6700\u3082\u3088\u304f\u7528\u3044\u3089\u308c\u307e\u3059.<\/li>\n<\/ul>\n\n \u30aa\u30af\u30bf\u30fc\u30d6\u5e2f\u57df\u30ec\u30d9\u30eb\u306f\u5e2f\u57df\u5e73\u5747\u4e8c\u4e57\uff0f\u96fb\u529b\u3092\u8868\u3059\u305f\u3081\u3001\u3069\u306e\u8868\u73fe\u304b\u3089\u51fa\u767a\u3057\u305f\u3068\u3057\u3066\u3082\u3001\u6700\u7d42\u7684\u306b\u306fPa\u00b2(\u3042\u308b\u3044\u306f\u540c\u7b49\u306e\u91cf)\u3067\u7a4d\u5206\uff0f\u52a0\u7b97\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059.<\/p>\n\n \u5468\u6ce2\u6570\u5206\u89e3\u80fd\u3068\u7247\u5074\u30b9\u30da\u30af\u30c8\u30eb:\u0394f, 0..fs\/2, \u304a\u3088\u3073\u300c\u00d72\u300d\u30eb\u30fc\u30eb<\/strong><\/p>\n\n FFT\u306e\u30d3\u30f3\u9593\u9694\u306f\u0394f = fs\/N\u3067\u3059. \u5178\u578b\u7684\u306a\u96e2\u6563\u8fd1\u4f3c\u306f\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059:<\/p>\n\n <\/figure>\n\n \u7247\u5074\u30b9\u30da\u30af\u30c8\u30eb(0..fs\/2)\u3092\u7528\u3044\u308b\u5834\u5408\u3001\u30a8\u30cd\u30eb\u30ae\u30fc\u4fdd\u5b58\u306e\u305f\u3081\u3001DC\u304a\u3088\u3073\u30ca\u30a4\u30ad\u30b9\u30c8\u3092\u9664\u304f\u3059\u3079\u3066\u306e\u30d3\u30f3\u3092\u901a\u5e382\u500d\u3057\u307e\u3059(\u8ca0\u306e\u5468\u6ce2\u6570\u5074\u306e\u96fb\u529b\u3092\u6b63\u306e\u5074\u306b\u6298\u308a\u7573\u3080\u305f\u3081). \u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u306b\u3088\u3063\u3066\u3053\u308c\u3089\u306e\u53d6\u308a\u6271\u3044\u306f\u7570\u306a\u308b\u305f\u3081\u3001\u7d50\u679c\u3092\u6bd4\u8f03\u3059\u308b\u524d\u306b\u5b9a\u7fa9\u3092\u305d\u308d\u3048\u3066\u304a\u304d\u307e\u3057\u3087\u3046.<\/p>\n\n \u7a93\u88dc\u6b63:\u30b3\u30d2\u30fc\u30ec\u30f3\u30c8\u30b2\u30a4\u30f3(\u30c8\u30fc\u30f3)\u3068ENBW(\u96d1\u97f3)\u306f\u5225\u7269<\/strong><\/p>\n\n \u7a93\u95a2\u6570\u306f\u30b9\u30da\u30af\u30c8\u30eb\u30ea\u30fc\u30af\u3092\u4f4e\u6e1b\u3057\u307e\u3059\u304c\u3001\u30b9\u30b1\u30fc\u30ea\u30f3\u30b0\u3092\u5909\u5316\u3055\u305b\u307e\u3059:<\/p>\n\n \n \u30c8\u30fc\u30f3\u632f\u5e45\u306b\u5bfe\u3057\u3066\u306f\u3001\u30b3\u30d2\u30fc\u30ec\u30f3\u30c8\u30b2\u30a4\u30f3(CG)\u3067\u88dc\u6b63\u3057\u3001\u3057\u3070\u3057\u3070CG = sum(w)\/N\u304c\u7528\u3044\u3089\u308c\u307e\u3059.<\/li>\n\n\n\n \u5e83\u5e2f\u57df\u96d1\u97f3\uff0fPSD\u306b\u5bfe\u3057\u3066\u306f\u3001\u7b49\u4fa1\u96d1\u97f3\u5e2f\u57df\u5e45(ENBW)\u3067\u88dc\u6b63\u3057\u3001\u4f8b\u3048\u3070ENBW = fs\u00b7sum(w\u00b2)\/(sum(w))\u00b2\u3068\u3057\u307e\u3059. [9]<\/li>\n<\/ul>\n\n CG\u306f\u30d4\u30fc\u30af\u632f\u5e45\u3092\u3001ENBW\u306f\u5e73\u5747\u7684\u306a\u30ce\u30a4\u30ba\u30d5\u30ed\u30a2\u306e\u9762\u7a4d\u3092\u5236\u5fa1\u3057\u307e\u3059. \u30aa\u30af\u30bf\u30fc\u30d6\u5e2f\u57df\u30ec\u30d9\u30eb\u306f\u30a8\u30cd\u30eb\u30ae\u30fc\u7d71\u8a08\u91cf\u3067\u3042\u308a\u3001ENBW\u306e\u5f71\u97ff\u3092\u3088\u308a\u5f37\u304f\u53d7\u3051\u307e\u3059.<\/p>\n\n \u30a6\u30a3\u30f3\u30c9\u30a6<\/td> \u30b3\u30d2\u30fc\u30ec\u30f3\u30c8\u30b2\u30a4\u30f3(CG)<\/td> ENBW(\u30d3\u30f3\u6570)<\/td><\/tr> \u77e9\u5f62<\/td> 1.000<\/td> 1.000<\/td><\/tr> \u30cf\u30f3<\/td> 0.500<\/td> 1.500<\/td><\/tr> \u30cf\u30df\u30f3\u30b0<\/td> 0.540<\/td> 1.363<\/td><\/tr> \u30d6\u30e9\u30c3\u30af\u30de\u30f3<\/td> 0.420<\/td> 1.727<\/td><\/tr><\/tbody><\/table><\/figure>\n\n \u90e8\u5206\u30d3\u30f3\u91cd\u307f\u4ed8\u3051:\u5e2f\u57df\u7aef\u304cFFT\u30d3\u30f3\u306b\u305d\u308d\u308f\u306a\u3044\u5834\u5408\u306e\u6271\u3044<\/strong><\/p>\n\n \u5e2f\u57df\u7aef\u304c\u30d3\u30f3\u306e\u5468\u6ce2\u6570\u306b\u3061\u3087\u3046\u3069\u4e00\u81f4\u3059\u308b\u3053\u3068\u306f\u307b\u3068\u3093\u3069\u3042\u308a\u307e\u305b\u3093. PSD\u3092\u3001\u5e45\u0394f\u306e\u5404\u30d3\u30f3\u5185\u3067\u307b\u307c\u4e00\u5b9a\u3068\u307f\u306a\u3057\u3001\u5883\u754c\u30d3\u30f3\u306b\u3064\u3044\u3066\u306f\u5e2f\u57df\u3068\u306e\u91cd\u306a\u308a\u7387\u3067\u91cd\u307f\u4ed8\u3051\u3057\u307e\u3059:<\/p>\n\n <\/figure>\n\n <\/figure>\n\n \u3053\u308c\u306b\u3088\u308a\u3001N\u3084\u5e2f\u57df\u7aef\u304c\u5909\u5316\u3057\u3066\u3082\u3001\u3088\u308a\u6ed1\u3089\u304b\u3067\u7269\u7406\u7684\u306b\u4e00\u8cab\u3057\u305f\u5e2f\u57df\u30ec\u30d9\u30eb\u304c\u5f97\u3089\u308c\u307e\u3059.<\/p>\n\n <\/figure>\n\n \u56f35:\u5e2f\u57df\u7aef\u304cFFT\u30d3\u30f3\u306b\u6574\u5408\u3057\u306a\u3044\u5834\u5408\u306e\u90e8\u5206\u30d3\u30f3\u91cd\u307f\u4ed8\u3051\u306e\u6a21\u5f0f\u56f3<\/strong><\/p>\n\n \u7d71\u4e00\u7684\u306a\u5f0f:\u4e21\u624b\u6cd5\u306f\u222b|H_b(f)|\u00b2 S_xx(f) df\u3092\u8a08\u7b97\u3057\u3066\u3044\u308b<\/strong><\/p>\n\n \u30d5\u30a3\u30eb\u30bf\u30d0\u30f3\u30af\u6cd5\u3068PSD\u30d3\u30cb\u30f3\u30b0\u6cd5\u306f\u3044\u305a\u308c\u3082\u3001\u6b21\u306e\u5f62\u3067\u8868\u73fe\u3067\u304d\u307e\u3059:<\/p>\n\n <\/figure>\n\n \u30d6\u30ea\u30c3\u30af\u30a6\u30a9\u30fc\u30eb\u578b\u30d3\u30cb\u30f3\u30b0\u306f\u3001|H_b|\u00b2\u304c[f1,f2]\u306e\u5185\u5074\u30671\u3001\u5916\u5074\u30670\u3067\u3042\u308b\u5834\u5408\u306b\u5bfe\u5fdc\u3057\u307e\u3059. \u898f\u683c\u306b\u6e96\u62e0\u3057\u305f\u771f\u306e\u30d5\u30a3\u30eb\u30bf\u306b\u306f\u30ed\u30fc\u30eb\u30aa\u30d5\u3068\u30ea\u30c3\u30d7\u30eb\u304c\u5b58\u5728\u3059\u308b\u305f\u3081\u3001\u898f\u683c\u306f\u30de\u30b9\u30af\u3068\u6709\u52b9\u5e2f\u57df\u5e45\u306b\u5236\u7d04\u3092\u8ab2\u3057\u3066\u3044\u308b\u306e\u3067\u3059.<\/p>\n\n \u5e2f\u57df\u96c6\u7d04:1\/3\u30aa\u30af\u30bf\u30fc\u30d6\u304b\u30891\u30aa\u30af\u30bf\u30fc\u30d6\u3092\u5408\u6210\u3057\u3001\u5168\u4f53\u30ec\u30d9\u30eb\u3092\u5f62\u6210\u3059\u308b<\/h3>\n\n \u7406\u60f3\u7684\u306a\u5206\u5272\u3068\u30a8\u30cd\u30eb\u30ae\u30fc\u53ce\u652f\u306e\u3082\u3068\u3067\u306f:<\/p>\n\n \n \u96a3\u63a5\u3059\u308b\u4e09\u3064\u306e\u4e09\u5206\u306e\u4e00\u30aa\u30af\u30bf\u30fc\u30d6\u5e2f\u57df\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u4e00\u3064\u306e\u30d5\u30eb\u30aa\u30af\u30bf\u30fc\u30d6\u5e2f\u57df\u3092\u8fd1\u4f3c\u3067\u304d\u307e\u3059.<\/li>\n\n\n\n \u30ab\u30d0\u30fc\u3057\u3066\u3044\u308b\u5168\u5e2f\u57df\u306e\u30a8\u30cd\u30eb\u30ae\u30fc\u3092\u5408\u8a08\u3059\u308c\u3070\u3001\u7dcf\u30a8\u30cd\u30eb\u30ae\u30fc\u304c\u5f97\u3089\u308c\u307e\u3059.<\/li>\n<\/ul>\n\n \u5fc5\u305a\u30a8\u30cd\u30eb\u30ae\u30fc\u9818\u57df\u3067\u5408\u6210\u3057\u3066\u304f\u3060\u3055\u3044.<\/p>\n\n L_i\u3092dB\u8868\u8a18\u306e\u5e2f\u57df\u30ec\u30d9\u30eb\u3068\u3059\u308b\u3068\u3001\u30a8\u30cd\u30eb\u30ae\u30fc\u306fE_i = 10^(L_i\/10)\u3068\u306a\u308a\u307e\u3059. \u3053\u306e\u3068\u304d:<\/strong><\/p>\n\n <\/figure>\n\n IEC 61260-1\u306f\u3001\u5206\u6570\u30aa\u30af\u30bf\u30fc\u30d6\u306e\u7d50\u679c\u3092\u5408\u6210\u3057\u3066\u3001\u3088\u308a\u5e83\u3044\u5e2f\u57df\u30ec\u30d9\u30eb\u3092\u5f62\u6210\u3067\u304d\u308b\u3053\u3068\u3092\u660e\u793a\u3057\u3066\u3044\u307e\u3059. [1]<\/p>\n\n \u6709\u52b9\u5e2f\u57df\u5e45:\u306a\u305c\u898f\u683c\u304c\u305d\u308c\u3092\u898f\u5b9a\u3059\u308b\u306e\u304b<\/h3>\n\n \u5b9f\u969b\u306e\u30d5\u30a3\u30eb\u30bf\u306f\u7406\u60f3\u7684\u306a\u77e9\u5f62\u7279\u6027\u3067\u306f\u3042\u308a\u307e\u305b\u3093. \u767d\u8272\u96d1\u97f3(PSD\u304c\u4e00\u5b9aS0)\u306e\u5834\u5408\u3001\u51fa\u529b\u5e73\u5747\u4e8c\u4e57\u5024\u306f\u6b21\u306e\u5f0f\u3067\u8868\u3055\u308c\u307e\u3059:<\/p>\n\n <\/figure>\n\n <\/figure>\n\n \u30d4\u30f3\u30af\u30ce\u30a4\u30ba(PSD ~ 1\/f)\u306e\u3088\u3046\u306a\u975e\u767d\u8272\u30b9\u30da\u30af\u30c8\u30eb\u306b\u5bfe\u3057\u3066\u306f\u3001\u6a19\u6e96\u7684\u306a\u5de5\u5b66\u7684\u96d1\u97f3\u30b9\u30da\u30af\u30c8\u30eb\u5168\u4f53\u3067\u7d50\u679c\u306e\u6bd4\u8f03\u6027\u3092\u4fdd\u3064\u305f\u3081\u3001\u91cd\u307f\u4ed8\u3051\u3092\u4f34\u3046\u6b63\u898f\u5316\u6709\u52b9\u5e2f\u57df\u5e45\u304c\u898f\u683c\u3067\u5b9a\u7fa9\u3055\u308c\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059. [1]<\/p>\n\n \u5b9f\u52d9\u4e0a\u306e\u542b\u610f\u3068\u3057\u3066\u3001FFT\u306b\u3088\u308b\u300c\u30cf\u30fc\u30c9\u30d3\u30cb\u30f3\u30b0\u300d\u306f\u3001B_eff = (f2 \u2212 f1)\u3092\u3082\u3064\u30d6\u30ea\u30c3\u30af\u30a6\u30a9\u30fc\u30eb\u30d5\u30a3\u30eb\u30bf\u3092\u6697\u9ed9\u306b\u4eee\u5b9a\u3057\u3066\u3044\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059. \u898f\u683c\u306b\u6e96\u62e0\u3057\u305f\u30aa\u30af\u30bf\u30fc\u30d6\u30d5\u30a3\u30eb\u30bf\u306b\u306f\u30b9\u30ab\u30fc\u30c8\u304c\u5b58\u5728\u3059\u308b\u305f\u3081\u3001B_eff\u306f\u308f\u305a\u304b\u306b(\u304b\u3064\u30af\u30e9\u30b9\u306b\u3088\u3063\u3066)\u7570\u306a\u308a\u5f97\u307e\u3059. \u7d50\u679c\u3092\u305d\u308d\u3048\u305f\u3044\u5834\u5408\u306f\u3001\u6a19\u6e96\u306e|H(f)|\u00b2\u3092\u5468\u6ce2\u6570\u9818\u57df\u3067\u8fd1\u4f3c\u3059\u308b\u304b\u3001\u624b\u6cd5\u306e\u9055\u3044\u3092\u660e\u793a\u7684\u306b\u6587\u66f8\u5316\u3057\u3066\u304f\u3060\u3055\u3044.<\/p>\n\n \u306a\u305c1\/3\u30aa\u30af\u30bf\u30fc\u30d6\u304c\u597d\u307e\u308c\u308b\u306e\u304b(\u6570\u5b66\uff0b\u8074\u899a\uff0b\u5de5\u5b66\u7684\u30c8\u30ec\u30fc\u30c9\u30aa\u30d5)<\/strong><\/h2>\n\n \u60c5\u5831\u5bc6\u5ea6\u304c\u300c\u3061\u3087\u3046\u3069\u3088\u3044\u300d:1\u30aa\u30af\u30bf\u30fc\u30d6\u3088\u308a\u7d30\u304b\u304f\u3001\u6975\u7d30\u5206\u3088\u308a\u5b89\u5b9a<\/h3>\n\n \u4e00\u3064\u306e\u30aa\u30af\u30bf\u30fc\u30d6\u5e2f\u57df\u3060\u3051\u3067\u306f\u7c97\u3059\u304e\u3066\u30b9\u30da\u30af\u30c8\u30eb\u5f62\u72b6\u3092\u96a0\u3057\u3066\u3057\u307e\u3046\u4e00\u65b9\u3067\u3001\u975e\u5e38\u306b\u7d30\u304b\u3044\u5206\u6570(\u4f8b:1\/12, 1\/24)\u306f\u4e0d\u5b89\u5b9a\u3067\u30b3\u30b9\u30c8\u304c\u9ad8\u304f\u306a\u308a\u5f97\u307e\u3059:<\/p>\n\n \n \u30e9\u30f3\u30c0\u30e0\u96d1\u97f3\u306b\u5bfe\u3059\u308b\u63a8\u5b9a\u5206\u6563\u304c\u5927\u304d\u304f\u306a\u308b(\u5404\u5e2f\u57df\u304c\u6349\u3048\u308b\u30a8\u30cd\u30eb\u30ae\u30fc\u304c\u5c11\u306a\u3044).<\/li>\n\n\n\n \u8a08\u7b97\u91cf\u304c\u5897\u3048\u3001\u5831\u544a\u306e\u8ca0\u62c5\u3082\u5927\u304d\u304f\u306a\u308a\u307e\u3059.<\/li>\n\n\n\n \u591a\u304f\u306e\u5834\u5408\u3001\u898f\u5236\u3084\u8a55\u4fa1\u30b9\u30ad\u30fc\u30e0\u304c\u5fc5\u8981\u3068\u3059\u308b\u4ee5\u4e0a\u306e\u8a73\u7d30\u306b\u306a\u3063\u3066\u3057\u307e\u3044\u307e\u3059.<\/li>\n<\/ul>\n\n \u4e09\u5206\u306e\u4e00\u30aa\u30af\u30bf\u30fc\u30d6\u306f\u53e4\u5178\u7684\u306a\u6298\u8877\u6848\u3067\u3042\u308a\u3001\u5de5\u5b66\u7684\u306a\u6d1e\u5bdf\u3092\u5f97\u308b\u306e\u306b\u5341\u5206\u306a\u5206\u89e3\u80fd\u3092\u6301\u3061\u3064\u3064\u3001\u6a19\u6e96\u5316\u3055\u308c\u305f\u6e2c\u5b9a\u306b\u8010\u3048\u308b\u5b89\u5b9a\u6027\u304c\u3042\u308a\u3001\u591a\u304f\u306e\u6e2c\u5b9a\u5668\u3084\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u3067\u5e83\u304f\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u3066\u3044\u307e\u3059.<\/p>\n\n \u8074\u899a\u5fc3\u7406\u5b66:\u4e2d\u57df\u306e\u81e8\u754c\u5e2f\u57df\u306f1\/3\u30aa\u30af\u30bf\u30fc\u30d6\u306b\u8fd1\u3044<\/h3>\n\n \u591a\u304f\u306e\u8074\u899a\u5fc3\u7406\u5b66\u306e\u6587\u732e\u3067\u306f\u3001\u53ef\u8074\u57df\u5168\u4f53\u306b\u304a\u3088\u305d24\u500b\u306e\u81e8\u754c\u5e2f\u57df\u304c\u3042\u308b\u3068\u8a18\u8ff0\u3055\u308c\u3066\u304a\u308a\u3001\u4e2d\u5468\u6ce2\u6570\u5e2f\u3067\u306f\u81e8\u754c\u5e2f\u57df\u5e45\u304c\u304a\u304a\u3080\u306d1\/3\u30aa\u30af\u30bf\u30fc\u30d6\u5e2f\u57df\u5e45\u306b\u8fd1\u3044\u3068\u3055\u308c\u3066\u3044\u307e\u3059. [7][8] \u3053\u308c\u306b\u3088\u308a\u30011\/3\u30aa\u30af\u30bf\u30fc\u30d6\u306f\u77e5\u899a\u97f3\u306b\u95a2\u308f\u308b\u554f\u984c\u306b\u5bfe\u3059\u308b\u81ea\u7136\u306a\u4e2d\u9593\u8868\u73fe\u3068\u306a\u308a\u3001Bark\uff0fERB\u30b9\u30b1\u30fc\u30eb\u307b\u3069\u7279\u6b8a\u3067\u306f\u306a\u3044\u4e00\u65b9\u3067\u3001\u3088\u308a\u6a19\u6e96\u5316\u3055\u308c\u305f\u8868\u73fe\u3068\u3057\u3066\u5229\u7528\u3067\u304d\u307e\u3059.<\/p>\n\n \u898f\u683c\uff0f\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u304b\u3089\u306e\u76f4\u63a5\u7684\u306a\u727d\u5f15:\u591a\u304f\u306e\u30ef\u30fc\u30af\u30d5\u30ed\u30fc\u304c1\/3\u30aa\u30af\u30bf\u30fc\u30d6\u5165\u51fa\u529b\u3092\u5fc5\u9808\u3068\u3057\u3066\u3044\u308b<\/h3>\n\n \u4e3b\u8981\u306a\u898f\u683c\u304c\u4e09\u5206\u306e\u4e00\u30aa\u30af\u30bf\u30fc\u30d6\u3067\u5165\u529b\uff0f\u51fa\u529b\u3092\u5b9a\u7fa9\u3059\u308b\u3068\u3001\u6e2c\u5b9a\u5668\u3001\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u3001\u30ec\u30dd\u30fc\u30c8\u69d8\u5f0f(\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8)\u3068\u3044\u3063\u305f\u30a8\u30b3\u30b7\u30b9\u30c6\u30e0\u5168\u4f53\u304c\u305d\u308c\u306b\u53ce\u675f\u3057\u3066\u3044\u304d\u307e\u3059. \u4f8b:<\/p>\n\n \n \u5efa\u7bc9\u97f3\u97ff\u8a55\u4fa1:ISO 717-1\u306f\u3001\u4e00\u5024\u6307\u6a19\u306e\u7b97\u51fa\u306b\u4e09\u5206\u306e\u4e00\u30aa\u30af\u30bf\u30fc\u30d6\u5e2f\u57df\u3092\u53c2\u7167\u3057\u3066\u3044\u307e\u3059. [5]<\/li>\n\n\n\n \u5ba4\u5185\u97f3\u97ff\u30d1\u30e9\u30e1\u30fc\u30bf(\u4f8b:\u6b8b\u97ff\u6642\u9593)\u306f\u3001ISO 3382\u30b7\u30ea\u30fc\u30ba\u306b\u304a\u3044\u3066\u3001\u30aa\u30af\u30bf\u30fc\u30d6\uff0f\u4e09\u5206\u306e\u4e00\u30aa\u30af\u30bf\u30fc\u30d6\u5e2f\u57df\u3067\u5831\u544a\u3055\u308c\u308b\u306e\u304c\u4e00\u822c\u7684\u3067\u3059. [6]<\/li>\n<\/ul>\n\n \u8ffd\u52a0\u306e\u30d9\u30fc\u30b910\u306e\u5229\u70b9:R10\u8868\u300110\u5e2f\u57df\uff0f\u30c7\u30b1\u30fc\u30c9\u3001\u53ef\u8aad\u6027<\/h3>\n\n \n 10\u5e2f\u57df\uff0f\u30c7\u30b1\u30fc\u30c9:\u5468\u6ce2\u6570\u309210\u500d\u3059\u308b\u3053\u3068\u304c\u3001\u6b63\u78ba\u306b10\u56de\u306e\u4e09\u5206\u306e\u4e00\u30aa\u30af\u30bf\u30fc\u30d6\u30b9\u30c6\u30c3\u30d7\u306b\u5bfe\u5fdc\u3057\u307e\u3059(\u5bfe\u6570\u30d7\u30ed\u30c3\u30c8\u306b\u3068\u3063\u3066\u975e\u5e38\u306b\u6271\u3044\u3084\u3059\u3044).<\/li>\n\n\n\n R10\u63a8\u5968\u6570:1.00, 1.25, 1.60, 2.00, 2.50, 3.15, 4.00, 5.00, 6.30, 8.00 (\u00d710^n) \u306f\u5e83\u304f\u8a8d\u77e5\u3055\u308c\u3066\u304a\u308a\u3001\u4f1d\u9054\u3057\u3084\u3059\u3044\u5024\u3067\u3059.<\/li>\n\n\n\n \u30d9\u30fc\u30b92\u3068\u6bd4\u3079\u3066\u300110\u9032\u30e9\u30d9\u30ea\u30f3\u30b0\u306e\u65b9\u304c\u6271\u3044\u306b\u304f\u3055\u304c\u5c11\u306a\u304f\u3001\u898f\u683c\u9593\u306e\u3042\u3044\u307e\u3044\u3055\u3082\u6e1b\u308a\u307e\u3059.<\/li>\n<\/ul>\n\n <\/p>\n\n \u30aa\u30af\u30bf\u30fc\u30d6\u5e2f\u57df\u5206\u6790\u306f\u3001\u901a\u5e38FFT\u30d3\u30cb\u30f3\u30b0\u307e\u305f\u306f\u30d5\u30a3\u30eb\u30bf\u30d0\u30f3\u30af\u306e\u3044\u305a\u308c\u304b\u306e\u65b9\u6cd5\u3067\u5b9f\u88c5\u3055\u308c\u307e\u3059. \u7d9a\u304d\u3092\u8aad\u3080 -> \u30aa\u30af\u30bf\u30fc\u30d6\u5e2f\u57df\u5206\u6790\u30ac\u30a4\u30c9:FFT\u30d3\u30cb\u30f3\u30b0\u3068\u30d5\u30a3\u30eb\u30bf\u30d0\u30f3\u30af\u306e\u6bd4\u8f03<\/a><\/em><\/p>\n\n OpenTest\u306f\u4e21\u65b9\u306e\u624b\u6cd5\u3092\u7d71\u5408\u3057\u3066\u3044\u307e\u3059.\u4eca\u3059\u3050\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u3066\u4f7f\u3044\u59cb\u3081\u307e\u3057\u3087\u3046 -><\/a> \u307e\u305f\u306f\u3001\u4e0b\u306e\u30d5\u30a9\u30fc\u30e0\u306b\u5165\u529b\u3057\u3066\u30e9\u30a4\u30d6\u30c7\u30e2\u306e\u4e88\u7d04\u3092\u884c\u3063\u3066\u304f\u3060\u3055\u3044.<\/p>\n\n www.opentest.com<\/a>\u3067\u3001\u3055\u3089\u306b\u591a\u304f\u306e\u6a5f\u80fd\u3084\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u4e8b\u4f8b\u3092\u3054\u89a7\u304f\u3060\u3055\u3044.<\/p>\n\n <\/p>\n\n \u53c2\u8003<\/h5>\n\n [1] IEC 61260-1:2014 PDF\u30b5\u30f3\u30d7\u30eb(iTeh):https:\/\/cdn.standards.iteh.ai\/samples\/13383\/3c4ae3e762b540cc8111744cb8f0ae8e\/IEC-61260-1-2014.pdf<\/a><\/p>\n\n [2] ISO 266:1997, Acoustics - Preferred frequencies(ISO):https:\/\/www.iso.org\/obp\/ui\/<\/a><\/p>\n\n [3] ANSI S1.11-2004 \u30d7\u30ec\u30d3\u30e5\u30fcPDF(ASA\/ANSI):https:\/\/webstore.ansi.org\/preview-pages\/ASA\/preview_ANSI%2BS1.11-2004.pdf<\/a><\/p>\n\n [4] ANSI\/ASA S1.11-2014\/Part 1 \/ IEC 61260-1:2014 \u30d7\u30ec\u30d3\u30e5\u30fc:https:\/\/webstore.ansi.org\/preview-pages\/ASA\/preview_ANSI%2BASA%2BS1.11-2014%2BPart%2B1%2BIEC%2B61260-1-2014%2B%28R2019%29.pdf<\/a><\/p>\n\n [5] ISO 717-1:2020 abstract(one-third-octave usage\u306b\u8a00\u53ca):https:\/\/www.iso.org\/standard\/77435.html<\/a><\/p>\n\n [6] ISO 3382-2:2008 \u30a2\u30d6\u30b9\u30c8\u30e9\u30af\u30c8(\u5ba4\u5185\u97f3\u97ff\u30d1\u30e9\u30e1\u30fc\u30bf):https:\/\/www.iso.org\/standard\/36201.html<\/a><\/p>\n\n [7] Ansys Help: Bark scale and critical bands(midrange\u304cthird octave\u306b\u8fd1\u3044\u3053\u3068\u306b\u8a00\u53ca):https:\/\/ansyshelp.ansys.com\/public\/Views\/Secured\/corp\/v252\/en\/Sound_SAS_UG\/Sound\/UG_SAS\/bark_scale_and_critical_bands_179506.html<\/a><\/p>\n\n [8] Simon Fraser University Sonic Studio Handbook: Critical Band and Critical Bandwidth:https:\/\/www.sfu.ca\/sonic-studio-webdav\/cmns\/Handbook5\/handbook\/Critical_Band.html<\/a><\/p>\n\n [9] MathWorks: ENBW\u5b9a\u7fa9\u306e\u4f8b:https:\/\/www.mathworks.com\/help\/signal\/ref\/enbw.html<\/a><\/p>\n\n <\/p>\n","protected":false},"excerpt":{"rendered":" \u30aa\u30af\u30bf\u30fc\u30d6\u5e2f\u57df\u5206\u6790\u306f\u3001\u5bfe\u6570\u5468\u6ce2\u6570\u8ef8\u4e0a\u306e\u5b9a\u5272\u5408\u5e2f\u57df\u5e45\u3092\u7528\u3044\u3066\u3001\u8a73\u7d30\u306a\u30b9\u30da\u30af\u30c8\u30eb\u3092\u6a19\u6e96\u5316\u3055\u308c\u305f1\/1\u30aa\u30af\u30bf\u30fc\u30d6\u5e2f\u57df\u304a\u3088\u30731\/3\u30aa\u30af\u30bf\u30fc\u30d6\u5e2f\u57df\u306b\u5909\u63db\u3057\u307e\u3059. \u672c\u8a18\u4e8b\u3067\u306f\u3001CPB(\u5b9a\u5272\u5408\u5e2f\u57df\u5e45)\u306e\u6570\u5b66\u7684\u306a\u57fa\u790e\u3001IEC 61260 [...]<\/p>\n","protected":false},"author":1,"featured_media":285072,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_eb_attr":"","content-type":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[1061,1056],"tags":[],"class_list":["post-285062","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-e3-83-8a-e3-83-ac-e3-83-83-e3-82-b8-e3-83-99-e3-83-bc-e3-82-b9","category-e3-83-96-e3-83-ad-e3-82-b0"],"blocksy_meta":[],"acf":[],"jetpack_featured_media_url":"https:\/\/design.crysound.com\/wp-content\/uploads\/2026\/02\/38.webp","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/design.crysound.com\/ja\/wp-json\/wp\/v2\/posts\/285062","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/design.crysound.com\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/design.crysound.com\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/design.crysound.com\/ja\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/design.crysound.com\/ja\/wp-json\/wp\/v2\/comments?post=285062"}],"version-history":[{"count":0,"href":"https:\/\/design.crysound.com\/ja\/wp-json\/wp\/v2\/posts\/285062\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/design.crysound.com\/ja\/wp-json\/wp\/v2\/media\/285072"}],"wp:attachment":[{"href":"https:\/\/design.crysound.com\/ja\/wp-json\/wp\/v2\/media?parent=285062"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/design.crysound.com\/ja\/wp-json\/wp\/v2\/categories?post=285062"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/design.crysound.com\/ja\/wp-json\/wp\/v2\/tags?post=285062"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}