{"id":4057,"date":"2026-03-27T16:35:57","date_gmt":"2026-03-27T08:35:57","guid":{"rendered":"https:\/\/ecmicrophones.com\/?p=4057"},"modified":"2026-03-27T16:35:58","modified_gmt":"2026-03-27T08:35:58","slug":"electret-microphone-digital-stethoscope-guide","status":"publish","type":"post","link":"https:\/\/ecmicrophones.com\/ja\/electret-microphone-digital-stethoscope-guide\/","title":{"rendered":"\u30c7\u30b8\u30bf\u30eb\u8074\u8a3a\u5668\u7528\u30a8\u30ec\u30af\u30c8\u30ec\u30c3\u30c8\u30de\u30a4\u30af\u30ed\u30db\u30f3\u306e\u9078\u629e\uff1a\u30c6\u30af\u30cb\u30ab\u30eb\u30ac\u30a4\u30c9"},"content":{"rendered":"<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"925\" height=\"540\" src=\"https:\/\/ecmicrophones.com\/wp-content\/uploads\/2026\/03\/electret-microphone-digital-stethoscope-guide.png\" alt=\"\u30c7\u30b8\u30bf\u30eb\u8074\u8a3a\u5668\u7528\u30a8\u30ec\u30af\u30c8\u30ec\u30c3\u30c8\u30de\u30a4\u30af\u30ed\u30db\u30f3\u9078\u629e\u30ac\u30a4\u30c9\" class=\"wp-image-4060\" srcset=\"https:\/\/ecmicrophones.com\/wp-content\/uploads\/2026\/03\/electret-microphone-digital-stethoscope-guide.png 925w, https:\/\/ecmicrophones.com\/wp-content\/uploads\/2026\/03\/electret-microphone-digital-stethoscope-guide-300x175.png 300w, https:\/\/ecmicrophones.com\/wp-content\/uploads\/2026\/03\/electret-microphone-digital-stethoscope-guide-768x448.png 768w, https:\/\/ecmicrophones.com\/wp-content\/uploads\/2026\/03\/electret-microphone-digital-stethoscope-guide-18x12.png 18w, https:\/\/ecmicrophones.com\/wp-content\/uploads\/2026\/03\/electret-microphone-digital-stethoscope-guide-600x350.png 600w\" sizes=\"auto, (max-width: 925px) 100vw, 925px\" \/><figcaption class=\"wp-element-caption\">\u30c7\u30b8\u30bf\u30eb\u8074\u8a3a\u5668\u7528ECMIC 9.7mm\u30a8\u30ec\u30af\u30c8\u30ec\u30c3\u30c8\u30fb\u30de\u30a4\u30af\u30ed\u30db\u30f3<\/figcaption><\/figure>\n<\/div>\n\n\n<p>\u30c7\u30b8\u30bf\u30eb\u8074\u8a3a\u5668\u3078\u306e\u79fb\u884c\u306b\u3088\u308a\u3001\u97f3\u97ff\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\u90e8\u54c1\u306b\u65b0\u305f\u306a\u8981\u6c42\u304c\u8ab2\u305b\u3089\u308c\u3066\u3044\u307e\u3059\u3002\u5f93\u6765\u306e\u30a2\u30ca\u30ed\u30b0\u5f0f\u8074\u8a3a\u5668\u3068\u306f\u7570\u306a\u308a\u3001\u30c7\u30b8\u30bf\u30eb\u5f0f\u8074\u8a3a\u5668\u3067\u306f\u3001\u30cf\u30a6\u30b8\u30f3\u30b0\u3084\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u304b\u3089\u767a\u751f\u3059\u308b\u6a5f\u68b0\u7684\u30ce\u30a4\u30ba\u3092\u9664\u53bb\u3057\u306a\u304c\u3089\u3001\u5fae\u5999\u306a\u751f\u7406\u97f3\u3092\u6349\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u30de\u30a4\u30af\u30ed\u30db\u30f3\u304c\u5fc5\u8981\u3068\u306a\u308a\u307e\u3059\u3002.<\/p>\n\n\n\n<p>\u3053\u306e\u30ac\u30a4\u30c9\u3067\u306f\u3001\u30a8\u30ec\u30af\u30c8\u30ec\u30c3\u30c8\u30b3\u30f3\u30c7\u30f3\u30b5\u30de\u30a4\u30af\u30ed\u30db\u30f3\uff08ECM\uff09\u306e\u4e3b\u306a\u4ed5\u69d8\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002&nbsp;<a href=\"https:\/\/ecmicrophones.com\/ja\/9-7mm-omnidirectional-electret-microphone-cartridge-for-parabolic-microphone\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u30c7\u30b8\u30bf\u30eb\u8074\u8a3a\u5668<\/a>, \u307e\u305f\u3001\u305d\u308c\u3089\u3092\u6a5f\u5668\u7b50\u4f53\u306b\u7d44\u307f\u8fbc\u3080\u305f\u3081\u306e\u5b9f\u7528\u7684\u306a\u8003\u616e\u4e8b\u9805\u304c\u3042\u308b\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30c7\u30b8\u30bf\u30eb\u8074\u8a3a\u5668\u306e\u4e3b\u306a\u30de\u30a4\u30af\u4ed5\u69d8<\/h2>\n\n\n\n<p>\u5fc3\u97f3\u3084\u547c\u5438\u97f3\u306f\u4f4e\u632f\u5e45\u306e\u4fe1\u53f7\u3067\u3042\u308a\u3001\u901a\u5e38 20\uff5e80dB SPL \u3067\u3001\u307b\u3068\u3093\u3069\u306e\u30a8\u30cd\u30eb\u30ae\u30fc\u306f\u4f4e\u5468\u6ce2\u6570\u30b9\u30da\u30af\u30c8\u30eb\u306b\u96c6\u4e2d\u3057\u307e\u3059\u3002\u305d\u308c\u306b\u5fdc\u3058\u3066\u30de\u30a4\u30af\u30ed\u30db\u30f3\u3092\u9078\u629e\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u611f\u5ea6<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u30bf\u30fc\u30b2\u30c3\u30c8<\/strong>40 dB\uff5e-30 dB\uff080 dB = 1 V\/Pa\uff09<\/li>\n\n\n\n<li><strong>\u306a\u305c\u305d\u308c\u304c\u91cd\u8981\u306a\u306e\u304b<\/strong>:\u5fc3\u81d3\u306e\u97f3\u306f\u5f31\u3044\u3002\u611f\u5ea6\u3092\u9ad8\u304f\u3059\u308b\u3053\u3068\u3067\u3001\u30ce\u30a4\u30ba\u3092\u5897\u5e45\u3059\u308b\u3088\u3046\u306a\u904e\u5ea6\u306e\u30a2\u30ca\u30ed\u30b0\u30b2\u30a4\u30f3\u3092\u5fc5\u8981\u3068\u305b\u305a\u3001\u5fae\u5f31\u306a\u4fe1\u53f7\u3092\u78ba\u5b9f\u306b\u6349\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002.<\/li>\n\n\n\n<li><strong>\u53c2\u8003<\/strong>:\u79c1\u305f\u3061\u306e\u00a0<a href=\"https:\/\/ecmicrophones.com\/ja\/9-7mm-omnidirectional-electret-microphone-cartridge-for-parabolic-microphone\/\" target=\"_blank\" rel=\"noreferrer noopener\">9.7mm\u7121\u6307\u5411\u6027\u30a8\u30ec\u30af\u30c8\u30ec\u30c3\u30c8\u30fb\u30de\u30a4\u30af\u30ed\u30db\u30f3<\/a>\u00a0\u611f\u5ea6\u306f-26\u00b12dB\u3067\u3001\u30c0\u30a4\u30ec\u30af\u30c8\u30fb\u30ad\u30e3\u30d7\u30c1\u30e3\u30fc\u306b\u9069\u3057\u3066\u3044\u308b\u3002.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u4fe1\u53f7\u5bfe\u96d1\u97f3\u6bd4\uff08SNR\uff09<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u30bf\u30fc\u30b2\u30c3\u30c8<\/strong>70dB\u4ee5\u4e0a\uff08A-weighted\uff09\u3001\u597d\u307e\u3057\u304f\u306f75dB\u4ee5\u4e0a<\/li>\n\n\n\n<li><strong>\u306a\u305c\u305d\u308c\u304c\u91cd\u8981\u306a\u306e\u304b<\/strong>:\u81e8\u5e8a\u74b0\u5883\u306f\u97f3\u97ff\u7684\u306b\u5236\u5fa1\u3055\u308c\u3066\u3044\u307e\u305b\u3093\u3002\u9ad8\u3044SNR\u306f\u3001\u751f\u7406\u7684\u4fe1\u53f7\u3092\u5468\u56f2\u306e\u96d1\u97f3\u304b\u3089\u5206\u96e2\u3059\u308b\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002.<\/li>\n\n\n\n<li><strong>\u53c2\u8003<\/strong>:SNR 82 dB\uff08\u4ee3\u8868\u5024\uff09\u306f\u3001\u307b\u3068\u3093\u3069\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u5341\u5206\u306a\u30d8\u30c3\u30c9\u30eb\u30fc\u30e0\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u5468\u6ce2\u6570\u5fdc\u7b54<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u6709\u52b9\u7bc4\u56f2<\/strong>20 Hz - 8 kHz\u30014 kHz\u4ee5\u4e0a\u3067\u7de9\u3084\u304b\u306b\u30ed\u30fc\u30eb\u30aa\u30d5<\/li>\n\n\n\n<li><strong>\u306a\u305c\u305d\u308c\u304c\u91cd\u8981\u306a\u306e\u304b<\/strong>:\u5fc3\u97f3\u306f20\uff5e500 Hz\u3001\u547c\u5438\u97f3\u306f2 kHz\u3001\u96d1\u97f3\u3084\u4e0d\u5b9a\u97f3\u306f4\uff5e8 kHz\u306b\u9054\u3059\u308b\u3002\u4f4e\u5468\u6ce2\u6570\u5e2f\u57df\u306e\u62e1\u5f35\u306f\u91cd\u8981\u3067\u3042\u308a\u3001\u9ad8\u5468\u6ce2\u6570\u5e2f\u57df\u306e\u30ed\u30fc\u30eb\u30aa\u30d5\u306f\u53ef\u8074\u5e2f\u57df\u306b\u6df7\u5165\u3059\u308b\u74b0\u5883\u30ce\u30a4\u30ba\u3092\u9664\u53bb\u3059\u308b\u306e\u306b\u5f79\u7acb\u3064\u3002.<\/li>\n\n\n\n<li><strong>\u6ce8<\/strong>:\u516c\u8868\u3055\u308c\u3066\u3044\u308b\u5468\u6ce2\u6570\u7279\u6027\u66f2\u7dda\u306f50 Hz\u304b\u3089\u59cb\u307e\u3063\u3066\u3044\u308b\u304c\u3001\u52b9\u679c\u7684\u306a\u6027\u80fd\u306f20 Hz\u307e\u3067\u4f38\u3073\u3066\u3044\u308b\u3002.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u6307\u5411\u6027<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u63a8\u85a6<\/strong>:\u5168\u65b9\u5411\u6027<\/li>\n\n\n\n<li><strong>\u306a\u305c\u305d\u308c\u304c\u91cd\u8981\u306a\u306e\u304b<\/strong>:\u5bc6\u9589\u3055\u308c\u305f\u30c1\u30a7\u30b9\u30c8\u30d4\u30fc\u30b9\u306e\u7a7a\u6d1e\u3067\u306f\u3001\u7121\u6307\u5411\u6027\u30de\u30a4\u30af\u30ed\u30db\u30f3\u306f\u5c0f\u3055\u306a\u7d44\u307f\u7acb\u3066\u306e\u3070\u3089\u3064\u304d\u306b\u95a2\u4fc2\u306a\u304f\u3001\u4e00\u8cab\u3057\u305f\u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002\u6307\u5411\u6027\u30de\u30a4\u30af\u30ed\u30db\u30f3\u306f\u3001\u6b63\u78ba\u306a\u4f4d\u7f6e\u306b\u3088\u3063\u3066\u5468\u6ce2\u6570\u7279\u6027\u306b\u3070\u3089\u3064\u304d\u304c\u751f\u3058\u307e\u3059\u3002.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u96fb\u6c17\u7684\u7279\u6027<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u52d5\u4f5c\u96fb\u5727<\/strong>:1.0\uff5e10.0V\uff08\u6a19\u6e962.0V\uff09<\/li>\n\n\n\n<li><strong>\u6d88\u8cbb\u96fb\u6d41<\/strong>\u2264 500 \u03bcA<\/li>\n\n\n\n<li><strong>\u51fa\u529b\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9<\/strong>: \u2264 2.2 k\u03a9<\/li>\n<\/ul>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u306f\u3001\u30d0\u30c3\u30c6\u30ea\u30fc\u99c6\u52d5\u3084\u6a19\u6e96\u7684\u306a\u30aa\u30fc\u30c7\u30a3\u30aa\u30fb\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\u56de\u8def\u306b\u9069\u3057\u3066\u3044\u308b\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u4fe1\u983c\u6027\u306b\u95a2\u3059\u308b\u8003\u5bdf<\/h2>\n\n\n\n<p>\u533b\u7642\u6a5f\u5668\u306b\u306f\u3001\u6e29\u5ea6\u3001\u6e7f\u5ea6\u3001\u6a5f\u68b0\u7684\u30b9\u30c8\u30ec\u30b9\u306b\u5bfe\u3057\u3066\u5b89\u5b9a\u3057\u305f\u6027\u80fd\u304c\u6c42\u3081\u3089\u308c\u307e\u3059\u3002\u3053\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u6a19\u6e96\u7684\u306a\u4fe1\u983c\u6027\u8a66\u9a13\u306b\u306f\u4ee5\u4e0b\u304c\u542b\u307e\u308c\u307e\u3059\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">\u30c6\u30b9\u30c8<\/th><th class=\"has-text-align-left\" data-align=\"left\">\u30b3\u30f3\u30c7\u30a3\u30b7\u30e7\u30f3<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-left\" data-align=\"left\">\u9ad8\u6e29<\/td><td class=\"has-text-align-left\" data-align=\"left\">+80\u2103\u3001100\u6642\u9593<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">\u4f4e\u6e29<\/td><td class=\"has-text-align-left\" data-align=\"left\">-40\u2103\u3001100\u6642\u9593<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">\u6e7f\u5ea6<\/td><td class=\"has-text-align-left\" data-align=\"left\">+55\u2103\u300185% RH\u3001100\u6642\u9593<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">\u71b1\u885d\u6483<\/td><td class=\"has-text-align-left\" data-align=\"left\">-40\u2103\uff5e+80\u2103\u300110\u30b5\u30a4\u30af\u30eb<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">\u632f\u52d5<\/td><td class=\"has-text-align-left\" data-align=\"left\">10-55 Hz\u3001\u632f\u5e451.52 mm\u3001\u5404\u8ef82\u6642\u9593<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">\u30c9\u30ed\u30c3\u30d7<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u5927\u7406\u77f3\u306e\u4e0a\u306b1.0m\u30015\u56de<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u30c6\u30b9\u30c8\u306f\u3001\u30de\u30a4\u30af\u30ed\u30db\u30f3\u304c\u4e00\u822c\u7684\u306a\u4f7f\u7528\u304a\u3088\u3073\u4fdd\u7ba1\u6761\u4ef6\u4e0b\u3067\u6027\u80fd\u3092\u7dad\u6301\u3059\u308b\u3053\u3068\u3092\u4fdd\u8a3c\u3057\u307e\u3059\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u7d71\u5408\u306b\u304a\u3051\u308b\u5171\u901a\u306e\u554f\u984c-\u5bc6\u9589\u3055\u308c\u305f\u30ad\u30e3\u30d3\u30c6\u30a3\u306b\u304a\u3051\u308b\u6a5f\u68b0\u7684\u30ce\u30a4\u30ba<\/h2>\n\n\n\n<p>\u304a\u5ba2\u69d8\u304b\u3089\u7e70\u308a\u8fd4\u3057\u5bc4\u305b\u3089\u308c\u308b\u8cea\u554f\u306b\u3001\u5bc6\u9589\u578b\u30cf\u30a6\u30b8\u30f3\u30b0\u306b\u30de\u30a4\u30af\u30ed\u30db\u30f3\u3092\u8a2d\u7f6e\u3057\u305f\u5834\u5408\u306e\u30ce\u30a4\u30ba\u30d4\u30c3\u30af\u30a2\u30c3\u30d7\u304c\u3042\u308a\u307e\u3059\uff1a<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u201c\u30de\u30a4\u30af\u30ed\u30db\u30f3\u3092\u5bc6\u9589\u3055\u308c\u305f\u7a7a\u6d1e\u306b\u8a2d\u7f6e\u3059\u308b\u3068\u3001\u30cf\u30df\u30f3\u30b0\u97f3\u304c\u767a\u751f\u3059\u308b\u3002\u30ad\u30e3\u30d3\u30c6\u30a3\u8868\u9762\u306e\u308f\u305a\u304b\u306a\u63a5\u89e6\u3084\u5916\u4e71\u3082\u62fe\u3063\u3066\u3057\u307e\u3046\u3002\u201d<\/p>\n<\/blockquote>\n\n\n\n<p>\u3053\u308c\u306f\u6a5f\u68b0\u7684\u306a\u30ab\u30c3\u30d7\u30ea\u30f3\u30b0\u306e\u554f\u984c\u3067\u3042\u308a\u3001\u30de\u30a4\u30af\u306e\u6b20\u9665\u3067\u306f\u306a\u3044\u3002.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u6839\u672c\u539f\u56e0\u5206\u6790<\/h3>\n\n\n\n<p>\u30de\u30a4\u30af\u30ed\u30db\u30f3\u304c\u786c\u3044\u7a7a\u6d1e\u306e\u4e2d\u306b\u5bc6\u9589\u3055\u308c\u308b\u3068\u3001\u7b50\u4f53\u5168\u4f53\u304c\u6a5f\u68b0\u7684\u306a\u5c0e\u4f53\u3068\u306a\u308a\u307e\u3059\u3002\u30bf\u30c3\u30c1\u3001\u30b1\u30fc\u30b9\u306e\u5171\u632f\u3001\u30b1\u30fc\u30d6\u30eb\u306e\u6469\u64e6\u306b\u3088\u3063\u3066\u3001\u632f\u52d5\u304c\u69cb\u9020\u4f53\u3092\u901a\u3063\u3066\u30de\u30a4\u30af\u30ed\u30db\u30f3\u306e\u5185\u90e8FET\u306b\u4f1d\u308f\u308a\u3001\u305d\u3053\u3067\u96fb\u6c17\u4fe1\u53f7\u306b\u5909\u63db\u3055\u308c\u307e\u3059\u3002.<\/p>\n\n\n\n<p>\u610f\u56f3\u3055\u308c\u305f\u4fe1\u53f7\uff08\u5fc3\u97f3\uff09\u306f&nbsp;<strong>\u7a7a\u6c17<\/strong>. .\u4e0d\u8981\u306a\u4fe1\u53f7\uff08\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u30fb\u30ce\u30a4\u30ba\uff09\u306f\u3001\u6b21\u306e\u3088\u3046\u306a\u7d4c\u8def\u3092\u901a\u308b\u3002&nbsp;<strong>\u56fa\u4f53\u69cb\u9020<\/strong>. .\u30de\u30a4\u30af\u306f\u3053\u306e2\u3064\u3092\u533a\u5225\u3067\u304d\u306a\u3044\u3002.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7de9\u548c\u7b56 - \u30b7\u30b9\u30c6\u30e0\u30ec\u30d9\u30eb<\/h3>\n\n\n\n<p>\u305d\u306e\u305f\u3081\u306b\u306f\u3001\u6a5f\u68b0\u8a2d\u8a08\u3001\u97f3\u97ff\u8a2d\u8a08\u3001\u96fb\u6c17\u8a2d\u8a08\u306b\u6ce8\u610f\u3092\u6255\u3046\u5fc5\u8981\u304c\u3042\u308b\uff1a<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u6a5f\u68b0\u7684\u7d76\u7e01<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u9069\u5408\u3059\u308b\u6750\u6599\uff08\u30b7\u30ea\u30b3\u30fc\u30f3\u30ac\u30b9\u30b1\u30c3\u30c8\u3001\u767a\u6ce1\u4f53\uff09\u3092\u4f7f\u7528\u3057\u3066\u3001\u30de\u30a4\u30af\u30ed\u30db\u30f3\u3092\u30cf\u30a6\u30b8\u30f3\u30b0\u304b\u3089\u9694\u96e2\u3059\u308b\u3002<\/li>\n\n\n\n<li>\u30de\u30a4\u30afPCB\u3092\u30ea\u30b8\u30c3\u30c9\u63a5\u7d9a\u3067\u306f\u306a\u304f\u3001\u30d5\u30ec\u30ad\u30b7\u30d6\u30eb\u56de\u8def\uff08FPC\uff09\u306b\u5b9f\u88c5\u3059\u308b\u3002<\/li>\n\n\n\n<li>\u3059\u3079\u3066\u306e\u5185\u90e8\u30b1\u30fc\u30d6\u30eb\u3092\u56fa\u5b9a\u3057\u3001\u30cf\u30a6\u30b8\u30f3\u30b0\u3068\u306e\u6469\u64e6\u3092\u9632\u3050<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u30a2\u30b3\u30fc\u30b9\u30c6\u30a3\u30c3\u30af\u30fb\u30c1\u30e3\u30f3\u30d0\u30fc\u306e\u8a2d\u8a08<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5f8c\u5ba4\u3092\u5bc6\u9589\u3057\u3001\u4ed6\u306e\u30b3\u30f3\u30d1\u30fc\u30c8\u30e1\u30f3\u30c8\u304b\u3089\u9694\u96e2\u3059\u308b\u3002<\/li>\n\n\n\n<li>\u30b5\u30a6\u30f3\u30c9\u30dd\u30fc\u30c8\u5f84\uff080.8\uff5e1.5mm\uff09\u3068\u9577\u3055\uff083mm\u4ee5\u4e0a\uff09\u306e\u6700\u9069\u5316<\/li>\n\n\n\n<li>PTFE\u819c\u3092\u4f7f\u7528\u3057\u3001\u97f3\u306e\u4f1d\u9054\u3092\u8a31\u53ef\u3057\u306a\u304c\u3089\u30dd\u30fc\u30c8\u3092\u5bc6\u9589\u3059\u308b\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u56de\u8def\u3068DSP<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30d7\u30ea\u30a2\u30f3\u30d7\u306f\u3067\u304d\u308b\u3060\u3051\u30de\u30a4\u30af\u306e\u8fd1\u304f\u306b\u7f6e\u304f<\/li>\n\n\n\n<li>\u4f4e\u5468\u6ce2\u306e\u30e1\u30ab\u30cb\u30ab\u30eb\u30ce\u30a4\u30ba\u3092\u9664\u53bb\u3059\u308b\u305f\u3081\u306b\u30cf\u30a4\u30d1\u30b9\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\uff0820\uff5e50 Hz\uff09\u3092\u9069\u7528\u3059\u308b\u3002<\/li>\n\n\n\n<li>\u30d5\u30a1\u30fc\u30e0\u30a6\u30a7\u30a2\u306b\u30bf\u30c3\u30c1\u30ce\u30a4\u30ba\u691c\u51fa\u3068\u9069\u5fdc\u6291\u5236\u3092\u5b9f\u88c5\u3059\u308b<\/li>\n<\/ul>\n\n\n\n<p>\u30de\u30a4\u30af\u30ed\u30db\u30f3\u3060\u3051\u3067\u306f\u30e1\u30ab\u30cb\u30ab\u30eb\u30ce\u30a4\u30ba\u306e\u554f\u984c\u3092\u89e3\u6c7a\u3067\u304d\u306a\u3044\u3002\u30b7\u30b9\u30c6\u30e0\u30ec\u30d9\u30eb\u306e\u8a2d\u8a08\u304c\u6700\u7d42\u7684\u306a\u6027\u80fd\u3092\u6c7a\u5b9a\u3057\u307e\u3059\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3088\u304f\u3042\u308b\u8cea\u554f\uff08FAQ\uff09<\/h2>\n\n\n<div id=\"rank-math-faq\" class=\"rank-math-block\">\n<div class=\"rank-math-list\">\n<div id=\"faq-question-1774599118953\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">Q1: \u30c7\u30b8\u30bf\u30eb\u8074\u8a3a\u5668\u7528\u306b\u6a19\u6e96\u7684\u306a\u97f3\u58f0\u30de\u30a4\u30af\u30ed\u30db\u30f3\u3092\u4f7f\u7528\u3067\u304d\u307e\u3059\u304b\uff1f<\/h3>\n<div class=\"rank-math-answer\">\n\n<p><strong>A:<\/strong>\u00a0\u63a8\u5968\u3055\u308c\u306a\u3044\u3002\u6a19\u6e96\u7684\u306a\u97f3\u58f0\u30de\u30a4\u30af\u30ed\u30db\u30f3\u306e\u5468\u6ce2\u6570\u7279\u6027\u306f\u901a\u5e38100 Hz\u304b\u3089\u3067\u3042\u308a\u3001100 Hz\u4ee5\u4e0b\u306e\u91cd\u8981\u306a\u5fc3\u81d3\u97f3\u306e\u5468\u6ce2\u6570\u304c\u6e1b\u8870\u3059\u308b\u3002\u30c7\u30b8\u30bf\u30eb\u8074\u8a3a\u5668\u306e\u5834\u5408\u300120 Hz\u307e\u3067\u306e\u5468\u6ce2\u6570\u7279\u6027\u3092\u6301\u3064\u30de\u30a4\u30af\u30ed\u30db\u30f3\u304c\u5fc5\u8981\u3067\u3059\u3002.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1774599126428\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">Q2: \u30de\u30a4\u30af\u3092\u30cf\u30a6\u30b8\u30f3\u30b0\u306b\u5bc6\u9589\u3059\u308b\u3068\u3001\u30cf\u30e0\u30ce\u30a4\u30ba\u304c\u767a\u751f\u3059\u308b\u306e\u306f\u306a\u305c\u3067\u3059\u304b\uff1f<\/h3>\n<div class=\"rank-math-answer\">\n\n<p><strong>A:<\/strong>\u00a0\u3053\u308c\u306f\u901a\u5e38\u3001\u30de\u30a4\u30af\u30ed\u30db\u30f3\u3068\u30cf\u30a6\u30b8\u30f3\u30b0\u306e\u9593\u306e\u6a5f\u68b0\u7684\u7d50\u5408\u306b\u3088\u3063\u3066\u5f15\u304d\u8d77\u3053\u3055\u308c\u308b\u3002\u30de\u30a4\u30af\u30ed\u30db\u30f3\u304c\u5f37\u56fa\u306b\u53d6\u308a\u4ed8\u3051\u3089\u308c\u3066\u3044\u308b\u3068\u3001\u7b50\u4f53\u304b\u3089\u306e\u632f\u52d5\u304c\u76f4\u63a5\u30de\u30a4\u30af\u30ed\u30db\u30f3\u306b\u4f1d\u308f\u308a\u307e\u3059\u3002\u89e3\u6c7a\u7b56\u3068\u3057\u3066\u306f\u3001\u6a5f\u68b0\u7684\u306a\u9694\u96e2\uff08\u30b7\u30ea\u30b3\u30f3\u30ac\u30b9\u30b1\u30c3\u30c8\u3001\u767a\u6ce1\u30b9\u30c1\u30ed\u30fc\u30eb\uff09\u3068\u9069\u5207\u306a\u97f3\u97ff\u5ba4\u8a2d\u8a08\u304c\u5fc5\u8981\u3067\u3059\u3002.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1774599132219\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">Q3: ECMIC\u306f\u611f\u5ea6\u3084\u5468\u6ce2\u6570\u7279\u6027\u306e\u30ab\u30b9\u30bf\u30e0\u306f\u53ef\u80fd\u3067\u3059\u304b\uff1f<\/h3>\n<div class=\"rank-math-answer\">\n\n<p><strong>A:<\/strong>\u00a0\u306f\u3044\u3002ECMIC\u306f\u3001\u30dc\u30ea\u30e5\u30fc\u30e0\u8981\u4ef6\u306b\u57fa\u3065\u304d\u3001\u611f\u5ea6\u3001\u5468\u6ce2\u6570\u5fdc\u7b54\u3001\u6a5f\u68b0\u7684\u5bf8\u6cd5\u306e\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u30b5\u30fc\u30d3\u30b9\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002\u4ed5\u69d8\u306b\u3064\u3044\u3066\u306f\u30c6\u30af\u30cb\u30ab\u30eb\u30b5\u30dd\u30fc\u30c8\u307e\u3067\u304a\u554f\u3044\u5408\u308f\u305b\u304f\u3060\u3055\u3044\u3002.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1774599138028\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">Q4: \u7121\u6307\u5411\u6027\u30de\u30a4\u30af\u3068\u6307\u5411\u6027\u30de\u30a4\u30af\u306e\u9055\u3044\u306f\u4f55\u3067\u3059\u304b\uff1f<\/h3>\n<div class=\"rank-math-answer\">\n\n<p><strong>A:<\/strong>\u00a0\u5168\u6307\u5411\u6027\u30de\u30a4\u30af\u30ed\u30db\u30f3\u306f\u3001\u6b63\u78ba\u306a\u53d6\u308a\u4ed8\u3051\u4f4d\u7f6e\u306b\u95a2\u4fc2\u306a\u304f\u3001\u4e00\u8cab\u3057\u305f\u5468\u6ce2\u6570\u7279\u6027\u304c\u5f97\u3089\u308c\u308b\u305f\u3081\u3001\u5bc6\u9589\u578b\u30c1\u30a7\u30b9\u30c8\u30d4\u30fc\u30b9\u30ad\u30e3\u30d3\u30c6\u30a3\u306b\u597d\u307e\u308c\u307e\u3059\u3002\u6307\u5411\u6027\u30de\u30a4\u30af\u30ed\u30db\u30f3\u306f\u3001\u7d44\u307f\u7acb\u3066\u306e\u969b\u306b\u30b5\u30a6\u30f3\u30c9\u30dd\u30fc\u30c8\u306e\u4f4d\u7f6e\u304c\u305a\u308c\u308b\u3068\u3001\u3070\u3089\u3064\u304d\u304c\u751f\u3058\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1774599143452\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">Q5: \u30ce\u30a4\u30ba\u306e\u539f\u56e0\u304c\u30de\u30a4\u30af\u306b\u3042\u308b\u306e\u304b\u3001\u305d\u308c\u3068\u3082\u30b7\u30b9\u30c6\u30e0\u8a2d\u8a08\u306b\u3042\u308b\u306e\u304b\u3092\u30c6\u30b9\u30c8\u3059\u308b\u306b\u306f\u3069\u3046\u3059\u308c\u3070\u3088\u3044\u3067\u3059\u304b\uff1f<\/h3>\n<div class=\"rank-math-answer\">\n\n<p><strong>A:<\/strong>\u00a0\u7c21\u5358\u306a\u65b9\u6cd5\uff1a\u96fb\u6c17\u7684\u306b\u63a5\u7d9a\u3057\u305f\u307e\u307e\u3001\u30de\u30a4\u30af\u30ed\u30db\u30f3\u3092\u30cf\u30a6\u30b8\u30f3\u30b0\u304b\u3089\u53d6\u308a\u5916\u3057\u307e\u3059\u3002\u30ce\u30a4\u30ba\u304c\u6d88\u3048\u305f\u5834\u5408\u3001\u554f\u984c\u306f\u6a5f\u68b0\u7684\u30ab\u30c3\u30d7\u30ea\u30f3\u30b0\u304b\u97f3\u97ff\u30c1\u30e3\u30f3\u30d0\u30fc\u306e\u8a2d\u8a08\u3067\u3059\u3002\u30ce\u30a4\u30ba\u304c\u7d9a\u304f\u5834\u5408\u306f\u3001\u96fb\u6e90\u3001\u30d7\u30ea\u30a2\u30f3\u30d7\u56de\u8def\u3001\u30a2\u30fc\u30b9\u3092\u8a55\u4fa1\u3057\u307e\u3059\u3002.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1774599150460\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">Q6: \u533b\u7642\u6a5f\u5668\u306eECM\u306e\u4e00\u822c\u7684\u306a\u52d5\u4f5c\u5bff\u547d\u306f\u3069\u306e\u304f\u3089\u3044\u3067\u3059\u304b\uff1f<\/h3>\n<div class=\"rank-math-answer\">\n\n<p><strong>A:<\/strong>\u00a0ECM\u306f\u53d7\u52d5\u7684\u306a\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u3042\u308a\u3001\u901a\u5e38\u306e\u52d5\u4f5c\u3067\u306f\u6469\u8017\u30e1\u30ab\u30cb\u30ba\u30e0\u306f\u306a\u3044\u3002\u6307\u5b9a\u3055\u308c\u305f\u96fb\u6c17\u7684\u304a\u3088\u3073\u74b0\u5883\u7684\u5236\u9650\u306e\u7bc4\u56f2\u5185\u3067\u4f7f\u7528\u3055\u308c\u308b\u5834\u5408\u3001\u30c7\u30d0\u30a4\u30b9\u306e\u671f\u5f85\u5bff\u547d\u307e\u3067\u6027\u80fd\u3092\u7dad\u6301\u3057\u307e\u3059\u3002\u4fe1\u983c\u6027\u8a66\u9a13\uff08\u6e29\u5ea6\u3001\u6e7f\u5ea6\u3001\u632f\u52d5\uff09\u304c\u5b9f\u65bd\u3055\u308c\u3001\u9577\u671f\u5b89\u5b9a\u6027\u304c\u4fdd\u8a3c\u3055\u308c\u308b\u3002.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1774599157404\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">Q7: \u30de\u30a4\u30af\u30ed\u30db\u30f3\u3092\u7d44\u307f\u7acb\u3066\u308b\u969b\u3001\u7279\u5225\u306a\u53d6\u308a\u6271\u3044\u304c\u5fc5\u8981\u3067\u3059\u304b\uff1f<\/h3>\n<div class=\"rank-math-answer\">\n\n<p><strong>A:<\/strong>\u00a0\u306f\u3044\u3002\u5185\u90e8FET\u306f\u9759\u96fb\u6c17\u306b\u654f\u611f\u3067\u3042\u308b\u305f\u3081\u3001\u53d6\u308a\u6271\u3044\u6642\u306b\u306fESD\u4fdd\u8b77\u304c\u5fc5\u8981\u3067\u3059\u3002\u306f\u3093\u3060\u4ed8\u3051\u306f\u4ed5\u69d8\u306b\u5f93\u3046\u3053\u3068\uff1a\u30b3\u30c6\u6e29\u5ea6360\u00b110\u2103\u3001\u306f\u3093\u3060\u4ed8\u3051\u6642\u9593\u22643\u79d2\u3002\u306f\u3093\u3060\u4ed8\u3051\u7528\u6cbb\u5177\u3068\u4f5c\u696d\u8005\u306f\u9069\u5207\u306b\u63a5\u5730\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/p>\n\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\">\u30bb\u30ec\u30af\u30b7\u30e7\u30f3\u6982\u8981<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">\u7533\u3057\u8fbc\u307f<\/th><th class=\"has-text-align-left\" data-align=\"left\">\u63a8\u5968\u30e2\u30c7\u30eb<\/th><th class=\"has-text-align-left\" data-align=\"left\">\u4e3b\u8981\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-left\" data-align=\"left\">\u81e8\u5e8a\u30b0\u30ec\u30fc\u30c9\u306e\u30c7\u30b8\u30bf\u30eb\u8074\u8a3a\u5668<\/td><td class=\"has-text-align-left\" data-align=\"left\"><a href=\"https:\/\/ecmicrophones.com\/ja\/9-7mm-omnidirectional-electret-microphone-cartridge-for-parabolic-microphone\/\" target=\"_blank\" rel=\"noreferrer noopener\">9.7mm\u7121\u6307\u5411\u6027ECM<\/a><\/td><td class=\"has-text-align-left\" data-align=\"left\">-26 dB\u611f\u5ea6\u300182 dB SNR\u300120 Hz - 8 kHz\u6709\u52b9\u7bc4\u56f2<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">\u30dd\u30fc\u30bf\u30d6\u30eb\/\u30a8\u30f3\u30c8\u30ea\u30fc\u30ec\u30d9\u30eb<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u30ab\u30b9\u30bf\u30e0\u30aa\u30d7\u30b7\u30e7\u30f3\u306e\u3054\u76f8\u8ac7<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u7279\u5b9a\u306e\u8981\u4ef6\u306b\u57fa\u3065\u304f<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\u7d50\u8ad6<\/h2>\n\n\n\n<p>\u7528\u9014\u306b\u5408\u3063\u305f\u30a8\u30ec\u30af\u30c8\u30ec\u30c3\u30c8\u30fb\u30de\u30a4\u30af\u30ed\u30db\u30f3\u3092\u9078\u3076&nbsp;<a href=\"https:\/\/ecmicrophones.com\/ja\/9-7mm-omnidirectional-electret-microphone-cartridge-for-parabolic-microphone\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u30c7\u30b8\u30bf\u30eb\u8074\u8a3a\u5668<\/a>&nbsp;\u306b\u306f\u3001\u611f\u5ea6\u3001SNR\u3001\u5468\u6ce2\u6570\u5fdc\u7b54\u3001\u4fe1\u983c\u6027\u306e\u30d0\u30e9\u30f3\u30b9\u304c\u542b\u307e\u308c\u307e\u3059\u3002\u540c\u69d8\u306b\u91cd\u8981\u306a\u3053\u3068\u306f\u3001\u6a5f\u68b0\u7684\u306a\u30ce\u30a4\u30ba\u306f\u3001\u6a5f\u68b0\u7684\u306a\u9694\u96e2\u3001\u97f3\u97ff\u30c1\u30e3\u30f3\u30d0\u30fc\u306e\u8a2d\u8a08\u3001\u4fe1\u53f7\u51e6\u7406\u3092\u901a\u3057\u3066\u3001\u30b7\u30b9\u30c6\u30e0\u30ec\u30d9\u30eb\u3067\u5bfe\u51e6\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3053\u3068\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u3059\u3002.<\/p>\n\n\n\n<p>ECMIC\u306f\u533b\u7642\u7528\u97f3\u97ff\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5411\u3051\u306b\u8a2d\u8a08\u3055\u308c\u305f\u30de\u30a4\u30af\u30ed\u30db\u30f3\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002\u5177\u4f53\u7684\u306a\u9078\u5b9a\u306b\u95a2\u3059\u308b\u3054\u8cea\u554f\u3084\u7d71\u5408\u30b5\u30dd\u30fc\u30c8\u306b\u3064\u3044\u3066\u306f\u3001\u6280\u8853\u8cc7\u6599\u3084\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30a8\u30f3\u30b8\u30cb\u30a2\u30ea\u30f3\u30b0\u30a2\u30b7\u30b9\u30bf\u30f3\u30b9\u3092\u3054\u5229\u7528\u3044\u305f\u3060\u3051\u307e\u3059\u3002.<\/p>","protected":false},"excerpt":{"rendered":"<p>The shift toward digital stethoscopes has placed new demands on acoustic front-end components. Unlike traditional analog stethoscopes, digital versions require microphones that can capture subtle physiological sounds while rejecting mechanical noise from the housing and handling. This guide covers the key specifications for electret condenser microphones (ECM) in&nbsp;digital stethoscope applications, along with practical considerations for integrating them into device housings. Key Microphone Specifications for Digital Stethoscopes Heart sounds and breath sounds are low-amplitude signals, typically ranging from 20 to 80 dB SPL, with most energy concentrated in the low-frequency spectrum. The microphone must be selected accordingly. Sensitivity Signal-to-Noise Ratio (SNR) Frequency Response Directivity Electrical Characteristics These parameters are suitable for [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4060,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[725,677],"class_list":["post-4057","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technical-insights","tag-digital-stethoscope","tag-electret-microphone"],"_links":{"self":[{"href":"https:\/\/ecmicrophones.com\/ja\/wp-json\/wp\/v2\/posts\/4057","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ecmicrophones.com\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ecmicrophones.com\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ecmicrophones.com\/ja\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ecmicrophones.com\/ja\/wp-json\/wp\/v2\/comments?post=4057"}],"version-history":[{"count":3,"href":"https:\/\/ecmicrophones.com\/ja\/wp-json\/wp\/v2\/posts\/4057\/revisions"}],"predecessor-version":[{"id":4062,"href":"https:\/\/ecmicrophones.com\/ja\/wp-json\/wp\/v2\/posts\/4057\/revisions\/4062"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ecmicrophones.com\/ja\/wp-json\/wp\/v2\/media\/4060"}],"wp:attachment":[{"href":"https:\/\/ecmicrophones.com\/ja\/wp-json\/wp\/v2\/media?parent=4057"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ecmicrophones.com\/ja\/wp-json\/wp\/v2\/categories?post=4057"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ecmicrophones.com\/ja\/wp-json\/wp\/v2\/tags?post=4057"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}