{"id":4197,"date":"2026-05-29T11:07:28","date_gmt":"2026-05-29T03:07:28","guid":{"rendered":"https:\/\/ecmicrophones.com\/?p=4197"},"modified":"2026-05-29T11:07:29","modified_gmt":"2026-05-29T03:07:29","slug":"understanding-signal-to-noise-ratio-snr-in-electret-microphone-capsules","status":"publish","type":"post","link":"https:\/\/ecmicrophones.com\/ja\/understanding-signal-to-noise-ratio-snr-in-electret-microphone-capsules\/","title":{"rendered":"\u30a8\u30ec\u30af\u30c8\u30ec\u30c3\u30c8\u30de\u30a4\u30af\u30ed\u30db\u30f3\u30ab\u30d7\u30bb\u30eb\u306e\u4fe1\u53f7\u5bfe\u96d1\u97f3\u6bd4\uff08SNR\uff09\u3092\u7406\u89e3\u3059\u308b"},"content":{"rendered":"
\n
\"SNR\u3068\u81ea\u5df1\u96d1\u97f3\u7279\u6027\u3092\u793a\u3059\u30a8\u30ec\u30af\u30c8\u30ec\u30c3\u30c8\u30de\u30a4\u30af\u30ed\u30db\u30f3\u306e\u30ab\u30d7\u30bb\u30eb\"
\u4fe1\u53f7\u5bfe\u96d1\u97f3\u6bd4\u306f\u3001\u4e3b\u306b\u9759\u304b\u306a\u74b0\u5883\u306b\u304a\u3051\u308b\u30a8\u30ec\u30af\u30c8\u30ec\u30c3\u30c8\u30de\u30a4\u30af\u30ed\u30db\u30f3\u306e\u30ab\u30d7\u30bb\u30eb\u306e\u81ea\u5df1\u96d1\u97f3\u6027\u80fd\u3092\u53cd\u6620\u3059\u308b\u3002.<\/figcaption><\/figure>\n<\/div>\n\n\n

\u4fe1\u53f7\u5bfe\u96d1\u97f3\u6bd4\uff08SNR\uff09\u306f\u3001\u30a8\u30ec\u30af\u30c8\u30ec\u30c3\u30c8\u30de\u30a4\u30af\u30ed\u30db\u30f3\u30ab\u30d7\u30bb\u30eb\u306b\u304a\u3044\u3066\u6700\u3082\u8aa4\u89e3\u3055\u308c\u3084\u3059\u3044\u4ed5\u69d8\u306e\u4e00\u3064\u3067\u3059\u3002\u74b0\u5883\u30ce\u30a4\u30ba\u6027\u80fd\u3068\u6df7\u540c\u3055\u308c\u304c\u3061\u3067\u3059\u304c\u3001\u5b9f\u969b\u306b\u306f\u9759\u304b\u306a\u6761\u4ef6\u4e0b\u3067\u306e\u30de\u30a4\u30af\u30ed\u30db\u30f3\u81ea\u8eab\u306e\u5185\u90e8\u30ce\u30a4\u30ba\u30ec\u30d9\u30eb\u3092\u4e3b\u306b\u8868\u3057\u3066\u3044\u307e\u3059\u3002.<\/p>\n\n\n\n

1.SNR\u306e\u5b9f\u969b\u306e\u610f\u5473<\/h2>\n\n\n\n

\u30a8\u30ec\u30af\u30c8\u30ec\u30c3\u30c8\u30de\u30a4\u30af\u30ed\u30db\u30f3\u30ab\u30d7\u30bb\u30eb\u3067\u306f\u3001SNR\u306f\u3001\u6240\u671b\u306e\u97f3\u58f0\u4fe1\u53f7\uff08\u4eba\u9593\u306e\u97f3\u58f0\u306a\u3069\uff09\u3068\u30de\u30a4\u30af\u30ed\u30db\u30f3\u306e\u81ea\u5df1\u751f\u6210\u30ce\u30a4\u30ba\uff08\u81ea\u5df1\u30ce\u30a4\u30ba\u307e\u305f\u306f\u30ce\u30a4\u30ba\u30d5\u30ed\u30a2\u3068\u3082\u547c\u3070\u308c\u308b\uff09\u3068\u306e\u9593\u306e\u95a2\u4fc2\u3092\u6307\u3059\u3002.<\/p>\n\n\n\n

\u7c21\u5358\u306b\u8a00\u3046\u3068SNR\u306f\u3001\u5468\u56f2\u306b\u97f3\u304c\u306a\u3044\u3068\u304d\u306e\u30de\u30a4\u30af\u306e\u9759\u304b\u3055\u3092\u793a\u3057\u307e\u3059\u3002.<\/p>\n\n\n\n

\u30a8\u30f3\u30b8\u30f3\u97f3\u3001\u98a8\u5207\u308a\u97f3\u3001\u7fa4\u8846\u306e\u30ce\u30a4\u30ba\u306a\u3069\u3001\u30ce\u30a4\u30ba\u306e\u591a\u3044\u74b0\u5883\u4e0b\u3067\u306e\u30de\u30a4\u30af\u306e\u6027\u80fd\u306b\u3064\u3044\u3066\u306f\u8a18\u8ff0\u3057\u3066\u3044\u307e\u305b\u3093\u3002.<\/p>\n\n\n\n

2.SNR\u304c\u9759\u304b\u306a\u74b0\u5883\u3067\u91cd\u8981\u306a\u7406\u7531<\/h2>\n\n\n\n

SNR\u304c\u91cd\u8981\u306b\u306a\u308b\u306e\u306f\u3001\u74b0\u5883\u304c\u9759\u304b\u306a\u5834\u5408\u3084\u97f3\u6e90\u304c\u5f31\u3044\u5834\u5408\u3067\u3042\u308b\u3002\u3053\u306e\u3088\u3046\u306a\u72b6\u6cc1\u3067\u306f\u3001\u30de\u30a4\u30af\u30ed\u30db\u30f3\u81ea\u8eab\u306e\u30ce\u30a4\u30ba\u3092\u30de\u30b9\u30af\u3059\u308b\u3088\u3046\u306a\u5916\u90e8\u30ce\u30a4\u30ba\u306f\u307b\u3068\u3093\u3069\u3042\u308a\u307e\u305b\u3093\u3002.<\/p>\n\n\n\n

SNR\u304c\u554f\u984c\u3068\u306a\u308b\u5178\u578b\u7684\u306a\u30b7\u30ca\u30ea\u30aa\uff1a<\/p>\n\n\n\n

    \n
  • \u30b9\u30bf\u30b8\u30aa\u30fb\u30dc\u30a4\u30b9\u30fb\u30ec\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0<\/li>\n\n\n\n
  • \u5ba4\u5185\u30b9\u30d4\u30fc\u30c1\u9332\u97f3<\/li>\n\n\n\n
  • \u5c0f\u5bb9\u91cf\u306e\u97f3\u58f0\u30ad\u30e3\u30d7\u30c1\u30e3<\/li>\n\n\n\n
  • \u30aa\u30fc\u30c7\u30a3\u30aa\u306e\u30dd\u30b9\u30c8\u30d7\u30ed\u30c0\u30af\u30b7\u30e7\u30f3\u307e\u305f\u306f\u30b2\u30a4\u30f3\u5897\u5e45<\/li>\n<\/ul>\n\n\n\n

    \u3053\u306e\u3088\u3046\u306a\u5834\u5408\u3001SNR\u306e\u4f4e\u3044\u30de\u30a4\u30af\u3067\u306f\u3001\u8ab0\u3082\u8a71\u3057\u3066\u3044\u306a\u3044\u3068\u304d\u3067\u3082\u3001\u80cc\u666f\u306e\u30d2\u30b9\u3084 \u201c\u30a8\u30a2\u30fc\u30ce\u30a4\u30ba \u201d\u304c\u76ee\u7acb\u3063\u3066\u3057\u307e\u3044\u307e\u3059\u3002.<\/p>\n\n\n\n

    3.\u9ad8\u30ce\u30a4\u30ba\u74b0\u5883\u306b\u304a\u3044\u3066SNR\u306e\u91cd\u8981\u6027\u304c\u4f4e\u3044\u7406\u7531<\/h2>\n\n\n\n

    \u30e2\u30fc\u30bf\u30fc\u30b9\u30dd\u30fc\u30c4\u3001\u822a\u7a7a\u6a5f\u3001\u5de5\u696d\u74b0\u5883\u306a\u3069\u306e\u975e\u5e38\u306b\u30ce\u30a4\u30ba\u306e\u591a\u3044\u74b0\u5883\u3067\u306f\u3001\u5916\u90e8\u30ce\u30a4\u30ba\u30ec\u30d9\u30eb\u306f\u30de\u30a4\u30af\u30ed\u30db\u30f3\u306e\u81ea\u5df1\u30ce\u30a4\u30ba\u3088\u308a\u3082\u304b\u306a\u308a\u9ad8\u304f\u306a\u308a\u307e\u3059\u3002.<\/p>\n\n\n\n

    \u3064\u307e\u308a\u3001\u652f\u914d\u7684\u306a\u30ce\u30a4\u30ba\u6e90\u306f\u3082\u306f\u3084\u30de\u30a4\u30af\u30ed\u30db\u30f3\u305d\u306e\u3082\u306e\u3067\u306f\u306a\u304f\u3001\u74b0\u5883\u306a\u306e\u3067\u3059\u3002\u305d\u306e\u7d50\u679c\u3001SNR\u306f\u97f3\u58f0\u306e\u660e\u77ad\u5ea6\u3092\u6c7a\u5b9a\u3059\u308b\u4e0a\u3067\u3042\u307e\u308a\u610f\u5473\u3092\u6301\u305f\u306a\u304f\u306a\u308a\u307e\u3059\u3002.<\/p>\n\n\n\n

    \u3053\u306e\u3088\u3046\u306a\u74b0\u5883\u3067\u306f\u3001\u97f3\u58f0\u306e\u660e\u77ad\u5ea6\u306f\u3088\u308a\u5de6\u53f3\u3055\u308c\u308b\uff1a<\/p>\n\n\n\n

      \n
    • \u30de\u30a4\u30af\u306e\u4f4d\u7f6e\uff08\u53e3\u307e\u3067\u306e\u8ddd\u96e2\uff09<\/li>\n\n\n\n
    • \u97f3\u97ff\u98a8\u9a12\u97f3\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb<\/li>\n\n\n\n
    • \u30b7\u30b9\u30c6\u30e0\u30fb\u30b2\u30a4\u30f3\u69cb\u9020<\/li>\n\n\n\n
    • \u30c7\u30b8\u30bf\u30eb\u30fb\u30ce\u30a4\u30ba\u30fb\u30ea\u30c0\u30af\u30b7\u30e7\u30f3\uff08DSP\uff09<\/li>\n<\/ul>\n\n\n\n

      4.SNR\u3067\u306f\u6e2c\u308c\u306a\u3044\u3082\u306e<\/h2>\n\n\n\n

      \u3088\u304f\u3042\u308b\u8aa4\u89e3\u306f\u3001SNR\u304c\u30ce\u30a4\u30ba\u8010\u6027\u3084\u30ce\u30a4\u30ba\u30ad\u30e3\u30f3\u30bb\u30eb\u6027\u80fd\u3092\u8868\u3057\u3066\u3044\u308b\u3068\u3044\u3046\u3082\u306e\u3067\u3059\u3002\u3053\u308c\u306f\u9593\u9055\u3044\u3067\u3059\u3002.<\/p>\n\n\n\n

      SNR\u306f\u6e2c\u5b9a\u3057\u306a\u3044\uff1a<\/p>\n\n\n\n

        \n
      • \u98a8\u5207\u308a\u97f3\u306e\u6291\u5236<\/li>\n\n\n\n
      • \u30a8\u30f3\u30b8\u30f3\u3084\u8eca\u306e\u30ce\u30a4\u30ba\u9664\u53bb<\/li>\n\n\n\n
      • \u74b0\u5883\u9a12\u97f3\u306e\u9694\u96e2<\/li>\n\n\n\n
      • \u30a8\u30b3\u30fc\u307e\u305f\u306f\u30ea\u30d0\u30fc\u30d6\u30fb\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb<\/li>\n<\/ul>\n\n\n\n

        \u3053\u308c\u3089\u306e\u8981\u56e0\u306f\u3001SNR\u3067\u306f\u306a\u304f\u3001\u30b7\u30b9\u30c6\u30e0\u8a2d\u8a08\u3001\u97f3\u97ff\u69cb\u9020\u3001\u30c7\u30b8\u30bf\u30eb\u4fe1\u53f7\u51e6\u7406\u306b\u3088\u3063\u3066\u51e6\u7406\u3055\u308c\u308b\u3002.<\/p>\n\n\n\n

        5.\u30ce\u30a4\u30ba\u306e\u591a\u3044\u74b0\u5883\u3067\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u6c7a\u3081\u308b\u3082\u306e<\/h2>\n\n\n\n

        \u5b9f\u969b\u306e\u9ad8\u96d1\u97f3\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u306f\u3001\u30de\u30a4\u30af\u30ed\u30db\u30f3\u306e\u6027\u80fd\u306f\u4e3b\u306bSNR\u3060\u3051\u3067\u306a\u304f\u3001\u30b7\u30b9\u30c6\u30e0\u30ec\u30d9\u30eb\u306e\u8a2d\u8a08\u306b\u3088\u3063\u3066\u6c7a\u307e\u308a\u307e\u3059\u3002.<\/p>\n\n\n\n

        \u4e3b\u306a\u8981\u56e0\u306f\u4ee5\u4e0b\u306e\u901a\u308a\uff1a<\/p>\n\n\n\n

          \n
        • \u30af\u30ed\u30fc\u30b9\u30c8\u30fc\u30af\u30fb\u30de\u30a4\u30af\u306e\u4f4d\u7f6e<\/li>\n\n\n\n
        • \u98a8\u5207\u308a\u97f3\u9632\u6b62\u7d20\u6750\u3068\u69cb\u9020<\/li>\n\n\n\n
        • \u30aa\u30fc\u30c7\u30a3\u30aa\u30fb\u30c1\u30a7\u30fc\u30f3\u306b\u304a\u3051\u308b\u9069\u5207\u306a\u30b2\u30a4\u30f3\u30fb\u30b9\u30c6\u30fc\u30b8\u30f3\u30b0<\/li>\n\n\n\n
        • \u30ce\u30a4\u30ba\u4f4e\u6e1b\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0<\/li>\n<\/ul>\n\n\n\n

          6.\u6982\u8981<\/h2>\n\n\n\n

          \u30a8\u30ec\u30af\u30c8\u30ec\u30c3\u30c8\u30de\u30a4\u30af\u30ed\u30db\u30f3\u30ab\u30d7\u30bb\u30eb\u306eSNR\u306f\u3001\u4e3b\u306b\u9759\u304b\u306a\u74b0\u5883\u3067\u30de\u30a4\u30af\u30ed\u30db\u30f3\u304c\u3069\u306e\u7a0b\u5ea6\u306e\u81ea\u5df1\u96d1\u97f3\u3092\u767a\u751f\u3059\u308b\u304b\u3092\u8868\u3059\u3002\u5916\u90e8\u30ce\u30a4\u30ba\u304c\u5c11\u306a\u3044\u5834\u5408\u3001\u9332\u97f3\u306e\u30af\u30ea\u30fc\u30f3\u3055\u306e\u6307\u6a19\u3068\u3057\u3066\u6709\u7528\u3067\u3059\u3002.<\/p>\n\n\n\n

          \u3057\u304b\u3057\u3001\u30ce\u30a4\u30ba\u306e\u591a\u3044\u74b0\u5883\u3067\u306f\u3001\u97f3\u58f0\u306e\u660e\u77ad\u5ea6\u306f\u3001\u30de\u30a4\u30af\u30ed\u30db\u30f3\u306eSNR\u4ed5\u69d8\u3067\u306f\u306a\u304f\u3001\u7269\u7406\u7684\u306a\u914d\u7f6e\u3068\u30b7\u30b9\u30c6\u30e0\u30ec\u30d9\u30eb\u306e\u30ce\u30a4\u30ba\u51e6\u7406\u306b\u652f\u914d\u3055\u308c\u307e\u3059\u3002.<\/p>\n\n\n\n

          \u8981\u3059\u308b\u306b\u3001SNR\u306f\u9759\u304b\u306a\u3068\u304d\u306b\u6700\u3082\u91cd\u8981\u306a\u306e\u3067\u3059\u3002\u5927\u97f3\u91cf\u306e\u74b0\u5883\u3067\u306f\u3001\u30de\u30a4\u30af\u81ea\u8eab\u306e\u30ce\u30a4\u30ba\u30ec\u30d9\u30eb\u3088\u308a\u3082\u30b7\u30b9\u30c6\u30e0\u8a2d\u8a08\u306e\u65b9\u304c\u91cd\u8981\u3067\u3059\u3002.<\/p>","protected":false},"excerpt":{"rendered":"

          Signal-to-Noise Ratio (SNR) is one of the most commonly misunderstood specifications in electret microphone capsules. It is often confused with environmental noise performance, but in reality, it mainly describes the microphone\u2019s own internal noise level under quiet conditions. 1. What SNR Actually Means In electret microphone capsules, SNR refers to the relationship between the desired audio signal (such as human speech) and the microphone\u2019s self-generated noise (also called self-noise or noise floor). In simple terms: SNR tells you how quiet the microphone is when there is no sound around. It does NOT describe how well the microphone performs in noisy environments such as engines, wind, or crowd noise. 2. Why […]<\/p>\n","protected":false},"author":1,"featured_media":4199,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[741,750],"class_list":["post-4197","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technical-insights","tag-electret-capsule","tag-microphone-snr"],"_links":{"self":[{"href":"https:\/\/ecmicrophones.com\/ja\/wp-json\/wp\/v2\/posts\/4197","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=4197"}],"version-history":[{"count":1,"href":"https:\/\/ecmicrophones.com\/ja\/wp-json\/wp\/v2\/posts\/4197\/revisions"}],"predecessor-version":[{"id":4200,"href":"https:\/\/ecmicrophones.com\/ja\/wp-json\/wp\/v2\/posts\/4197\/revisions\/4200"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ecmicrophones.com\/ja\/wp-json\/wp\/v2\/media\/4199"}],"wp:attachment":[{"href":"https:\/\/ecmicrophones.com\/ja\/wp-json\/wp\/v2\/media?parent=4197"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ecmicrophones.com\/ja\/wp-json\/wp\/v2\/categories?post=4197"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ecmicrophones.com\/ja\/wp-json\/wp\/v2\/tags?post=4197"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}