{"id":740,"date":"2014-07-21T22:44:20","date_gmt":"2014-07-21T13:44:20","guid":{"rendered":"http:\/\/owmya.com\/wordpress\/?p=740"},"modified":"2014-07-29T17:00:38","modified_gmt":"2014-07-29T08:00:38","slug":"%e7%b6%9a%e3%80%85-mc-%e3%82%ab%e3%83%bc%e3%83%88%e3%83%aa%e3%83%83%e3%82%b8%e5%b0%82%e7%94%a8%e7%ae%a1%e5%bc%8f%e3%83%95%e3%82%a9%e3%83%8e%e3%82%a4%e3%82%b3%e3%83%a9%e3%82%a4%e3%82%b6%e3%83%bc","status":"publish","type":"post","link":"https:\/\/owmya.com\/wordpress\/?p=740","title":{"rendered":"\u7d9a\u3005 MC \u30ab\u30fc\u30c8\u30ea\u30c3\u30b8\u5c02\u7528\u7ba1\u5f0f\u30d5\u30a9\u30ce\u30a4\u30b3\u30e9\u30a4\u30b6\u30fc\u30a2\u30f3\u30d7\u304c\u73fe\u5b9f\u7684\u304b\u78ba\u8a8d\u3059\u308b\u305f\u3081\u30c7\u30b6\u30a4\u30f3\u3057\u3066\u307f\u305f"},"content":{"rendered":"<p>\u4eca\u307e\u3067\u306e\u30b9\u30fc\u30c0\u30e9\u306a\u8a71\u3067\u306f\u30e2\u30ce\u304c\u3067\u304d\u305d\u3046\u306b\u306a\u3044\u306e\u3067\u3002\uff08\u7b11\uff09<\/p>\n<p style=\"padding-left: 30px;\"><span style=\"color: #c0c0c0;\"><em>\u307e\u3042\u30b9\u30fc\u30c0\u30e9\u3067\u3082\u306a\u3093\u3068\u304b\u52d5\u3044\u3061\u3083\u3046\u306e\u304c\u771f\u7a7a\u7ba1\u56de\u8def\u306e\u826f\u3044\u3068\u3053\u308d\u3067\u306f\u3042\u308a\u307e\u3059\u3051\u3069\u4eca\u56de\u534a\u5c0e\u4f53\u56de\u8def\u3068\u306e\u6df7\u5408\u306b\u3082\u306a\u308a\u307e\u3059\u3057\u3002<\/em><\/span><\/p>\n<h2>\u30b7\u30b9\u30c6\u30e0\u306e\u6982\u8981<\/h2>\n<p>\u305d\u3082\u305d\u3082\u306e\u51fa\u767a\u304c MC \u30ab\u30fc\u30c8\u30ea\u30c3\u30b8\u306e\u51fa\u529b\uff08\u30aa\u30eb\u30c8\u30d5\u30a9\u30f3\u306a\u3069\u306e\u8d85\u4f4e\u51fa\u529b\u306f\u3055\u3059\u304c\u306b\u8003\u3048\u3066\u3044\u307e\u305b\u3093\uff09\u3067\u30b9\u30c6\u30c3\u30d7\u30a2\u30c3\u30d7\u30c8\u30e9\u30f3\u30b9\u3092\u4f7f\u308f\u305a\u306b\u771f\u7a7a\u7ba1\u3067\u30e9\u30a4\u30f3\u51fa\u529b\u307e\u3067\u5897\u5e45\u3059\u308bEQ\u30a2\u30f3\u30d7\u306f\u4f5c\u308c\u306a\u3044\u3082\u3093\u3060\u308d\u3046\u304b\uff1f\u3068\u3044\u3046\u7591\u554f\u3067\u3057\u305f\u3002<\/p>\n<p>\u554f\u984c\u306f\u3084\u306f\u308a<\/p>\n<blockquote><p><strong>\u771f\u7a7a\u7ba1\u306e\u96d1\u97f3<\/strong><\/p><\/blockquote>\n<p>\u306b\u3064\u304d\u307e\u3059\u3002<\/p>\n<p>\u3069\u306e\u304f\u3089\u3044\u96d1\u97f3\u304c\u51fa\u308b\u304b\u306f\u3082\u3061\u308d\u3093\u7d20\u5b50\u3084\u52d5\u4f5c\u6761\u4ef6\u3067\u5909\u308f\u308b\u308f\u3051\u3067\u3059\u304c\u3001EF806S \u306e TELEFUNKEN \u306b\u3088\u308b\u30c7\u30fc\u30bf\u30b7\u30fc\u30c8\u306b\u306f<\/p>\n<blockquote><p>The equivalent noise voltage to generates at g1 ca.\u00a0 2\u03bcV for range of frequencies 25 &#8230; 10,000 c \/s at Ub = 250V, Ra = 100k\u03a9, measured with a peak voltmeter for noies and an earfilter to CCIF-Norm 1949.<\/p><\/blockquote>\n<p>\u306a\u3069\u3068\u66f8\u304b\u308c\u3066\u304a\u308a\u307e\u3059\u3002EF806S \u306a\u3093\u3066\u8a00\u3063\u305f\u3089\u4eca\u3067\u8a00\u3046\u30a6\u30eb\u30c8\u30e9\u30ed\u30fc\u30ce\u30a4\u30ba\u306a\u7d20\u5b50\u3067\u3059\u304b\u3089\u3001\u307e\u3042\u3053\u308c\u3092\u6700\u826f\u5024\u3068\u3057\u3066\u8003\u3048\u3066\u3001\u3053\u308c\u3067\u30c0\u30e1\u306a\u3089\u3082\u3046\u30c0\u30e1\u3067\u826f\u3044\u306e\u3067\u306f\u306a\u3044\u304b\u3068\u3002<\/p>\n<p>\u82f1\u8a9e\u8aad\u3081\u308c\u3070\u8a00\u3046\u307e\u3067\u3082\u306a\u3044\u306e\u3067\u3059\u304c\u3001\u4e0a\u306f\u8981\u7d04\u3059\u308c\u3070\u30d7\u30ec\u30fc\u30c8\u3068\u96fb\u6e90\u9593\u306b\u63a5\u7d9a\u3059\u308b\u62b5\u6297\u304c 100k\u03a9\u3067\u96fb\u6e90\u96fb\u5727\u304c 250V \u306e\u3068\u304d\u306b 25\uff5e10kHz \u306e\u5e2f\u57df\u3067\u96d1\u97f3\u4fe1\u53f7\u304c\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u30b0\u30ea\u30c3\u30c9\u3068\u30d7\u30ec\u30fc\u30c8\u9593\u3067 2\u03bcV \u51fa\u308b\u3088\uff5e\u3068\u3044\u3046\u3053\u3068\u3067\u826f\u3044\u306f\u305a\u3002&#8221;measured with a peak&#8230;&#8221; \u4ee5\u964d\u306e\u8a18\u8f09\u306f\u8a08\u6e2c\u306e\u4ed5\u65b9\u306e\u8a71\u3067\u3001\u3053\u3053\u3067\u91cd\u8981\u3063\u307d\u3044\u8a71\u306f CCIF-Norm 1949 \u3059\u306a\u308f\u3061\u4eca\u3067\u3044\u3046 ITU \u306e\u8074\u899a\u30e2\u30c7\u30eb\u306b\u3057\u305f\u304c\u3063\u305f\uff08\u4eca\u3068\u6614\u3067\u4f7f\u308f\u308c\u3066\u3044\u308b\u7279\u6027\u304c\u82e5\u5e72\u7570\u306a\u3063\u3066\u308b\u306f\u305a\uff09\u30d5\u30a3\u30eb\u30bf\u30fc\u3092\u901a\u3057\u3066\u3044\u308b\u3063\u3066\u8a71\u306e\u3068\u3053\u308d\u3067\u3057\u3087\u3046\u3002\u5927\u96d1\u628a\u306b\u8a00\u3048\u3070\u3053\u306e\u30d5\u30a3\u30eb\u30bf\u30fc\u3092\u901a\u3057\u305f\u307b\u3046\u304c\u7d20\u3067\u8a08\u308b\u3088\u308a\u82e5\u5e72\u6709\u5229\u306b\u306a\u308b\u306f\u305a\u3067\u3059\u3002<\/p>\n<p>\u3068\u306f\u8a00\u3048\u6700\u7d42\u7684\u306b\u8033\u3067\u8074\u304f\u306e\u3067\u307e\u3042\u3001 2\u03bcV \u96d1\u97f3\u304c\u4e57\u308b\u306e\u306d\u30fc\u3067\u826f\u3044\u306e\u3060\u3068\u3002\u305d\u3046\u3057\u307e\u3059\u3068\u3001\u96fb\u6d41\u3068\u3057\u3066\u306f\u6982\u7b97 2\u03bcV\/100k\u03a9=20pA \u3067\u3057\u3087\u3046\u304b\u3002<\/p>\n<h2>\u30a2\u30f3\u30d7\u306e\u30e2\u30c7\u30eb<\/h2>\n<p>\u30d6\u30ed\u30c3\u30af\u56f3\u3067\u306f<\/p>\n<p><a href=\"https:\/\/owmya.com\/wordpress\/wp\/wp-content\/uploads\/2014\/07\/MCPhonoEQBD.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-742\" src=\"https:\/\/owmya.com\/wordpress\/wp\/wp-content\/uploads\/2014\/07\/MCPhonoEQBD-300x211.png\" alt=\"MCPhonoEQBD\" width=\"300\" height=\"211\" srcset=\"https:\/\/owmya.com\/wordpress\/wp\/wp-content\/uploads\/2014\/07\/MCPhonoEQBD-300x211.png 300w, https:\/\/owmya.com\/wordpress\/wp\/wp-content\/uploads\/2014\/07\/MCPhonoEQBD-1024x723.png 1024w, https:\/\/owmya.com\/wordpress\/wp\/wp-content\/uploads\/2014\/07\/MCPhonoEQBD.png 1684w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p>\u3053\u3093\u306a\u611f\u3058\u3067\u3059\u304c<\/p>\n<ul>\n<li>\u30a2\u30f3\u30d7\uff11\u306f\u9ad8\u5897\u5e45\u304b\u3064\u4f4e\u5165\u529b\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\uff08100\u03a9\uff09\u3067\u4f4e\u51fa\u529b\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9<\/li>\n<li>\u30a2\u30f3\u30d72\u306f\u5168\u4f53\u306e\u5897\u5e45\u7387\u3067\u8db3\u308a\u306a\u3044\u5206\u3092\u88dc\u3044\u3001\u304b\u3064\u9ad8\u5165\u529b\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u3067\u4f4e\u51fa\u529b\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9<\/li>\n<\/ul>\n<p>\u5b9f\u969b\u306f\u3001\u5229\u5f97\u304c\u4f59\u3063\u3066\u3044\u308b\u306a\u3089\u82e5\u5e72\u30a2\u30f3\u30d7\uff11\u3067\u3082\u5e30\u9084\u639b\u3051\u3066\u5b89\u5b9a\u3055\u305b\u305f\u65b9\u304c\u826f\u3044\u3068\u306f\u601d\u3044\u307e\u3059\u3002<\/p>\n<p>JEITA \u306e\u898f\u5b9a\u3067\u884c\u3051\u3070 MC \u30ab\u30fc\u30c8\u30ea\u30c3\u30b8\u306e\u6700\u5927\u51fa\u529b\u306f 2.8mVrms \u3068\u3057\u3066\u3001\u3053\u308c\u3092\u3053\u308c\u307e\u305f JEITA \u306e\u898f\u5b9a\u3067\u63a5\u7d9a\u6761\u4ef6\u304b\u3089 2Vrms \u7a0b\u5ea6\u306b\u3059\u308b\u3053\u3068\u3092\u8003\u3048\u307e\u3059\u3068\u3001\u632f\u5e45\u3067 2\/(2.8\u00d710^-3)=5000\/7\u2252714\u3002\u5b9f\u969b\u306b\u306f\u3053\u308c\u306b RIAA \u7279\u6027\u306b\u3057\u305f\u304c\u3063\u305f\u5468\u6ce2\u6570\u632f\u5e45\u7279\u6027\u306e\u8003\u616e\u304c\u5fc5\u8981\u3067\u3059\u304c 1kHz \u3067\u8003\u3048\u308b\u5206\u306b\u306f\u3053\u306e\u307e\u307e\u3067\u3082\u5341\u5206\u554f\u984c\u306a\u3044\u3002\u304a\u3088\u305d 57dB\u3002<\/p>\n<p>RIAA\u30d5\u30a3\u30eb\u30bf\u306e\u30d6\u30ed\u30c3\u30af\u3067\u306f\u3001\u5229\u5f97\u306f\u30de\u30a4\u30ca\u30b9\u3067\u3059\u30021kHz \u306e\u3068\u3053\u308d\u3067\u6982\u7b97 -20dB \u3067\u3057\u3087\u3046\u304b\u3002\u305d\u3046\u3059\u308b\u3068\u30a2\u30f3\u30d7\uff11\u3068\u30a2\u30f3\u30d7\uff12\u3067\u5408\u8a08 57+20=77dB \u3092\u7a3c\u304c\u306a\u3044\u3068\u3044\u3051\u307e\u305b\u3093\u3002\u6982\u7b977\u5343\u500d\u5f37\u3067\u3059\u3002<\/p>\n<p>\u30a2\u30f3\u30d7\uff11\u3067\u3067\u304d\u308b\u3060\u3051\u5229\u5f97\u3092\u7a3c\u3050\u65b9\u304c\u96d1\u97f3\u5bfe\u7b56\u3068\u3057\u3066\u306f\u6709\u5229\u3067\u3059\u304c\u3001RIAA \u7279\u6027\u3082\u8003\u616e\u3057\u3066\u300c\u51fa\u6765\u308b\u7bc4\u56f2\u300d\u3067\u9ad8\u5229\u5f97\u3068\u3057\u306a\u3044\u3068\u3044\u3051\u307e\u305b\u3093\u3002\u7406\u60f3\u3092\u8a00\u3048\u3070\u51fa\u6765\u308b\u7bc4\u56f2\u3067\u30a2\u30f3\u30d7\uff11\u3067\u4e0a\u3052\u3066\u8db3\u308a\u306a\u3044\u5206\u3092\u30a2\u30f3\u30d7\uff12\u3067\u4e0a\u3052\u308b\u8a71\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u3053\u3053\u307e\u3067\u306e\u304a\u8a71\u306f\u3001JEITA \u306e\u898f\u5b9a\u306b\u6cbf\u3063\u305f\u8b70\u8ad6\u3067\u3059\u306e\u3067\u632f\u5e45\u306f\u5168\u90e8 rms \uff08\u5b9f\u52b9\u5024\uff09\u306b\u306a\u3063\u3066\u307e\u3059\u3002\u306a\u306e\u3067\u30d4\u30fc\u30af\u5024\u3067\u8003\u3048\u308b\u3068\u3082\u3063\u3068\u53b3\u3057\u3044\u8b70\u8ad6\u306b\u306a\u308b\u3002\u307e\u3042\u666e\u901a\u306b\u500d\u304f\u3089\u3044\u3002\u6700\u60aa\u5024\u3092\u8003\u3048\u308b\u30683\u500d\u304f\u3089\u3044\u4f59\u88d5\u3092\u898b\u3066\u304a\u304d\u305f\u3044\u3068\u3053\u308d\u3067\u3059\u3002<\/p>\n<p>\u3059\u306a\u308f\u3061\u30a2\u30f3\u30d7\uff11\u306f 9mV \u304f\u3089\u3044\u306e\u30ec\u30d9\u30eb\u3067\u4fe1\u53f7\u304c\u5165\u3063\u3066\u304d\u3066\u3082\u3042\u307e\u308a\u6b6a\u307e\u306a\u3044\u3088\u3046\u306b\u3057\u3066\u304a\u304d\u305f\u3044\u3002\u3057\u3064\u3053\u3044\u3051\u3069 18mVp-p\u3002<\/p>\n<h2>\u30a2\u30f3\u30d7\uff11\u306e\u691c\u8a0e<\/h2>\n<p>\u521d\u6bb5\u4e94\u6975\u7ba1\u30b0\u30ea\u30c3\u30c9\u5165\u529b\u30d7\u30ec\u30fc\u30c8\u51fa\u529b\u306b\u76f4\u7d50\u3067\u51fa\u529b\u6bb5\u4e09\u6975\u7ba1\u30ab\u30bd\u30fc\u30c9\u30d5\u30a9\u30ed\u30a2\u30fc\u3068\u3044\u3063\u305f\u3068\u3053\u308d\u3067\u3057\u3087\u3046\u304b\u3002\u3053\u308c\u306f\u5229\u5f97\u3092\u7a3c\u304e\u305f\u3044\u305f\u3081\u3068\u51fa\u529b\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u3092\u4e0b\u3052\u305f\u3044\u305f\u3081\u306e\u4e21\u65b9\u3092\u6e80\u8db3\u3059\u308b\u3002\u521d\u6bb5\u306e\u8ca0\u8377\u62b5\u6297\u3067\u51fa\u529b\u6bb5\u304c\u30ab\u30bd\u30fc\u30c9\u30d5\u30a9\u30ed\u30a2\u30fc\u3060\u3068\u30ab\u30bd\u30fc\u30c9\u30d5\u30a9\u30ed\u30a2\u30fc\u56de\u8def\u306e\u5165\u529b\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u306e\u9ad8\u3055\u304c\u6d3b\u304d\u307e\u3059\u3002\u3082\u3061\u308d\u3093\u30ab\u30bd\u30fc\u30c9\u30d5\u30a9\u30ed\u30a2\u30fc\u306a\u306e\u3067\u51fa\u529b\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u306f\u4f4e\u304f\u306a\u308b\u3002<\/p>\n<p>\u521d\u6bb5\u306b 6267(EF806S \u306e\u666e\u901a\u306e\u7ba1\u3002EF86 \u3068\u3082\u3002\u96fb\u6c17\u7684\u306b\u306f\u540c\u7b49) \u3092\u4f7f\u3063\u305f\u5834\u5408\u3001\u6b21\u306e\u3088\u3046\u306a\u3082\u306e\u304c\u8003\u3048\u3089\u308c\u307e\u3059\uff08\u6982\u5ff5\uff09\u3002<\/p>\n<p><a href=\"https:\/\/owmya.com\/wordpress\/wp\/wp-content\/uploads\/2014\/07\/6267AMP.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-744\" src=\"https:\/\/owmya.com\/wordpress\/wp\/wp-content\/uploads\/2014\/07\/6267AMP-300x145.png\" alt=\"6267AMP\" width=\"300\" height=\"145\" srcset=\"https:\/\/owmya.com\/wordpress\/wp\/wp-content\/uploads\/2014\/07\/6267AMP-300x145.png 300w, https:\/\/owmya.com\/wordpress\/wp\/wp-content\/uploads\/2014\/07\/6267AMP-1024x498.png 1024w, https:\/\/owmya.com\/wordpress\/wp\/wp-content\/uploads\/2014\/07\/6267AMP.png 1916w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p>V1 \u306e 10kV \u3068 R1 \u306e 15M\u03a9\u304c\u62ec\u5f27\u4ed8\u304d\u6982\u5ff5\u3068\u66f8\u3044\u305f\u306e\u3092\u5982\u5b9f\u306b\u793a\u3057\u3066\u307e\u3059\u304c\u3001V1+R1 \u306e\u90e8\u5206\u306f\u5b9f\u969b\u306b\u306f\u3082\u3063\u3068\u4f4e\u3044\u96fb\u5727\uff08\u305b\u3044\u305c\u3044\u9ad8\u304f\u3066\u3082 90V \u304f\u3089\u3044\uff1f\uff09\u3068\u5b9a\u96fb\u6d41\u30a2\u30af\u30c6\u30a3\u30d6\u8ca0\u8377\u306b\u7f6e\u304d\u63db\u308f\u308b\u3068\u3053\u308d\u3067\u3059\u3002\u5b9a\u96fb\u6d41\u30a2\u30af\u30c6\u30a3\u30d6\u8ca0\u8377\u306e\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u304c\u5927\u4f53 15M\u03a9\u304f\u3089\u3044\u3060\u3068\u5229\u5f97\u304c\u7f8e\u5473\u3057\u3044\u611f\u3058\u306b\u306a\u308b\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002<\/p>\n<p>\u305d\u3057\u3066\u3053\u306e 15M\u03a9\u8ca0\u8377\u306b\u5bfe\u3057 20pA \u306e\u96d1\u97f3\u96fb\u6d41\uff08\u4e0a\u306e\u65b9\u3067\u8a08\u7b97\u3057\u305f\u5024\u3067\u3059\u304c\u3001\u53b3\u5bc6\u306b\u306f\u52d5\u4f5c\u6761\u4ef6\u304c\u9055\u3046\u306e\u3067\u4f7f\u3063\u3066\u826f\u3044\u304b\u554f\u984c\u306f\u3042\u308a\u307e\u3059\u304c\u3001\u30c9\u30f3\u30d6\u30ea\u52d8\u5b9a\uff09\u304c\u4e57\u308b\u3068 15M\u00d720p=300\u03bcV\u30020.35mVrms \u5165\u529b\u306b\u5bfe\u3059\u308b\u51fa\u529b\u306f\u6982\u7b97\u00a0 280mVrms\u00a0\u3067\u3001\u30b3\u30ec\u306b 300uV \u7a0b\u5ea6\u304c\u51fa\u529b\u306b\u4e57\u308b\u3068\u8003\u3048\u308b\u3068\u3001\u307e\u3042 300\u03bcVrms \u3060\u3068\u3057\u3066\u3082\u304a\u304a\u3088\u305d 1000 \u5206\u306e1\u3002\u611f\u899a\u7684\u306b\u306f\u306a\u3093\u304b\u554f\u984c\u306a\u3055\u305d\u3046\u3067\u306f\u3042\u308a\u307e\u3059\u3002<\/p>\n<blockquote><p><span style=\"color: #c0c0c0;\">\u5b9f\u969b\u306e\u96d1\u97f3\u4fe1\u53f7\u306f\u5468\u6ce2\u6570\u5e2f\u57df\u306b\u5bfe\u3057\u3066\u5206\u5e03\u3057\u3066\u3044\u308b\u306e\u3067\u3001\u3053\u3093\u306a\u96d1\u306a\u8a71\u3058\u3083\u3059\u307e\u306a\u3044\u3067\u3059\u304c\u3001\u3069\u3046\u305b\u8ca0\u8377\u304c\u4e00\u756a\u554f\u984c\u306b\u306a\u308b\u3068\u3053\u308d\u3060\u308d\u3046\u3057\u3001\u305d\u3044\u3064\u306e\u96d1\u97f3\u3082\u91cd\u7a4d\u3055\u308c\u308b\u306e\u3067\u307e\u3060\u53b3\u5bc6\u306b\u8003\u3048\u308b\u3060\u3051\u7121\u99c4\u306a\u6c17\u304c\u3057\u307e\u3057\u3066\u30fb\u30fb\u30fb<\/span><\/p><\/blockquote>\n<p>\u305d\u3046\u306a\u308b\u3068\u3053\u306e 15M\u03a9 \u306e\u9ad8\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u8ca0\u8377\u3092\u5b9f\u73fe\u3059\u308b\u306e\u304c\u6280\u8853\u7684\u8ab2\u984c\u3063\u3066\u3053\u3068\u3067\u3059\u3002<\/p>\n<p>\u3053\u306e\u8ca0\u8377\u304c\u5b9f\u73fe\u3067\u304d\u308c\u3070\u3001\u3053\u3053\u3067\u5927\u4f53 800 \u500d\u306e\u5229\u5f97\uff0858dB\uff09\u7a3c\u3052\u308b\u306e\u3067\u3001\u30a2\u30f3\u30d7\uff12\u3067\u306f 20dB \u7a3c\u3052\u3070\u4f59\u88d5\u3067\u3059\u3002<\/p>\n<p>\u6c17\u306f\u5fc3\u7a0b\u5ea6\u306e\u5b89\u5b9a\u306e\u305f\u3081\u306b 8dB \u7a0b\u5ea6\u8ca0\u5e30\u9084\u639b\u3051\u3066\u3082\u30a2\u30f3\u30d7\uff12\u3067\u306f 30dB \u3082\u3044\u3089\u306a\u3044\u308f\u3051\u3067\u304b\u306a\u308a\u697d\u306b\u306a\u308a\u307e\u3059\u3057\u3001\u305d\u306e\u5834\u5408\u3067\u3082\u30a2\u30f3\u30d7\uff11\u306f 50dB \u306a\u306e\u3067 316 \u500d\u306e\u5229\u5f97\u306b\u306a\u308a\u30010.1mV \u5165\u529b\u306b\u5bfe\u3057 30mV \u7a0b\u5ea6\u306e\u51fa\u529b\u3067\u3059\u304b\u3089\u5b9f\u88c5\u8a2d\u8a08\u3082\u307e\u3060\u697d\u3067\u3057\u3087\u3046\u3002<\/p>\n<p>\u3061\u306a\u307f\u306b\u8ca0\u5e30\u9084\u3092\u304b\u3051\u306a\u304b\u3063\u305f\u5834\u5408\u3067\u306f\u3001\u5165\u529b\u304c 9mV \u30d4\u30fc\u30af\u3068\u8003\u3048\u3066\u51fa\u529b\u306f 7.2V\u3002\u51fa\u529b\u6bb5\u306e\u30ab\u30bd\u30fc\u30c9\u30d5\u30a9\u30ed\u30a2\u306f\u82e5\u5e72\u8a2d\u8a08\u304c\u9762\u5012\u306b\u306a\u308b\u3067\u3057\u3087\u3046\u304b\u3002\u305d\u306e\u3042\u305f\u308a\u3082\u8003\u616e\u3057\u3066<\/p>\n<p><a href=\"https:\/\/owmya.com\/wordpress\/wp\/wp-content\/uploads\/2014\/07\/6267NFB.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-745\" src=\"https:\/\/owmya.com\/wordpress\/wp\/wp-content\/uploads\/2014\/07\/6267NFB-300x150.png\" alt=\"6267NFB\" width=\"300\" height=\"150\" srcset=\"https:\/\/owmya.com\/wordpress\/wp\/wp-content\/uploads\/2014\/07\/6267NFB-300x150.png 300w, https:\/\/owmya.com\/wordpress\/wp\/wp-content\/uploads\/2014\/07\/6267NFB-1024x512.png 1024w, https:\/\/owmya.com\/wordpress\/wp\/wp-content\/uploads\/2014\/07\/6267NFB.png 1916w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p>\u3053\u3093\u306a\u611f\u3058\u3067\u3057\u3087\u3046\u304b\u3002P-G 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https:\/\/owmya.com\/wordpress\/wp\/wp-content\/uploads\/2014\/07\/PEQ4.png 1916w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p>\u3053\u3093\u306a\u611f\u3058\u3067\u3057\u3087\u3046\u304b\u300220\uff5e20kHz \u3067 9mV 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&hellip; <a href=\"https:\/\/owmya.com\/wordpress\/?p=740\">\u7d9a\u304d\u3092\u8aad\u3080 <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[6,13,10],"tags":[],"class_list":["post-740","post","type-post","status-publish","format-standard","hentry","category-6","category-13","category-10"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/owmya.com\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/740","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/owmya.com\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/owmya.com\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/owmya.com\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/owmya.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=740"}],"version-history":[{"count":7,"href":"https:\/\/owmya.com\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/740\/revisions"}],"predecessor-version":[{"id":762,"href":"https:\/\/owmya.com\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/740\/revisions\/762"}],"wp:attachment":[{"href":"https:\/\/owmya.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=740"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/owmya.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=740"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/owmya.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=740"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}