{"id":159,"date":"2026-06-28T23:13:25","date_gmt":"2026-06-28T15:13:25","guid":{"rendered":"https:\/\/www.bgdyx.com\/?p=159"},"modified":"2026-06-29T08:20:05","modified_gmt":"2026-06-29T00:20:05","slug":"%e5%88%86%e8%b4%9d%e5%88%b0%e5%ba%95%e6%98%af%e4%bb%80%e4%b9%88%ef%bc%9f%e4%b8%80%e6%96%87%e6%90%9e%e6%87%82-db%e3%80%81dbspl%e3%80%81dbfs-%e7%9a%84%e6%9c%ac%e8%b4%a8%e5%8c%ba%e5%88%ab","status":"publish","type":"post","link":"https:\/\/www.bgdyx.com\/index.php\/2026\/06\/28\/%e5%88%86%e8%b4%9d%e5%88%b0%e5%ba%95%e6%98%af%e4%bb%80%e4%b9%88%ef%bc%9f%e4%b8%80%e6%96%87%e6%90%9e%e6%87%82-db%e3%80%81dbspl%e3%80%81dbfs-%e7%9a%84%e6%9c%ac%e8%b4%a8%e5%8c%ba%e5%88%ab\/","title":{"rendered":"\u5206\u8d1d\u5230\u5e95\u662f\u4ec0\u4e48\uff1f\u4e00\u6587\u641e\u61c2 dB\u3001dBSPL\u3001dBFS \u7684\u672c\u8d28\u533a\u522b"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">\u5bfc\u8bed<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">&#8220;\u8fd9\u4e2a\u97f3\u7bb1\u7075\u654f\u5ea6 88dB\uff0c\u90a3\u4e2a\u529f\u653e\u4fe1\u566a\u6bd4 110dB\uff0c\u8fd9\u6bb5\u97f3\u9891\u7535\u5e73\u662f -18dBFS\u2026\u2026&#8221;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u97f3\u54cd\u4e16\u754c\u91cc\uff0c&#8221;dB&#8221;\u8fd9\u4e2a\u5355\u4f4d\u65e0\u5904\u4e0d\u5728\uff0c\u4f46 99% \u7684\u4eba\u4ece\u6765\u6ca1\u6709\u771f\u6b63\u641e\u61c2\u5b83\u3002\u5206\u8d1d\u4e0d\u662f\u4e00\u4e2a\u7edd\u5bf9\u5355\u4f4d\uff0c\u5b83\u662f\u4e00\u4e2a<strong>\u6bd4\u503c\u7684\u5bf9\u6570\u8868\u8fbe<\/strong>\u3002\u7406\u89e3\u4e86\u8fd9\u4e00\u70b9\uff0c\u4f60\u624d\u80fd\u771f\u6b63\u8bfb\u61c2\u6240\u6709\u97f3\u54cd\u53c2\u6570\uff0c\u505a\u51fa\u6b63\u786e\u7684\u7cfb\u7edf\u51b3\u7b56\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u672c\u6587\u4ece\u7269\u7406\u672c\u8d28\u51fa\u53d1\uff0c\u5e26\u4f60\u5f7b\u5e95\u641e\u6e05\u695a dB\u3001dBSPL\u3001dBFS\u3001dBu\u3001dBV \u8fd9\u51e0\u4e2a\u6982\u5ff5\u7684\u533a\u522b\u4e0e\u8054\u7cfb\uff0c\u4ee5\u53ca\u5bb6\u5ead\u5f71\u9662\u6821\u51c6\u4e2d\u6700\u5bb9\u6613\u88ab\u6df7\u6dc6\u7684\u53c2\u8003\u7535\u5e73\u95ee\u9898\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e00\u3001\u5206\u8d1d\u7684\u672c\u8d28\uff1a\u4e00\u4e2a\u6bd4\u503c\u7684\u5bf9\u6570<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1.1 \u4e3a\u4ec0\u4e48\u8981\u7528\u5bf9\u6570\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u4eba\u8033\u5bf9\u58f0\u97f3\u54cd\u5ea6\u7684\u611f\u77e5\u9075\u5faa<strong>\u97e6\u4f2f-\u8d39\u5e0c\u7eb3\u5b9a\u5f8b\uff08Weber-Fechner Law\uff09<\/strong>\uff1a<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u611f\u77e5\u91cf\u4e0e\u523a\u6fc0\u91cf\u7684\u5bf9\u6570\u6210\u6b63\u6bd4\u3002<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u610f\u5473\u7740\u4eba\u8033\u611f\u53d7\u5230\u7684\u54cd\u5ea6\u53d8\u5316\uff0c\u4e0e\u58f0\u538b\u7684<strong>\u5bf9\u6570\u503c<\/strong>\u6210\u7ebf\u6027\u5173\u7cfb\uff0c\u800c\u4e0d\u662f\u4e0e\u58f0\u538b\u672c\u8eab\u6210\u7ebf\u6027\u5173\u7cfb\u3002\u5177\u4f53\u8868\u73b0\u4e3a\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u58f0\u538b\u589e\u5927 <strong>10 \u500d<\/strong>\uff0c\u4eba\u8033\u611f\u89c9\u54cd\u4e86\u7ea6 <strong>2 \u500d<\/strong><\/li>\n\n\n\n<li>\u58f0\u538b\u589e\u5927 <strong>100 \u500d<\/strong>\uff0c\u4eba\u8033\u611f\u89c9\u54cd\u4e86\u7ea6 <strong>4 \u500d<\/strong><\/li>\n\n\n\n<li>\u58f0\u538b\u589e\u5927 <strong>1000 \u500d<\/strong>\uff0c\u4eba\u8033\u611f\u89c9\u54cd\u4e86\u7ea6 <strong>8 \u500d<\/strong><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c\u7528\u7ebf\u6027\u523b\u5ea6\u63cf\u8ff0\u58f0\u97f3\uff0c\u4ece\u4eba\u8033\u521a\u80fd\u542c\u5230\u7684\u6700\u5fae\u5f31\u58f0\u97f3\uff0820\u03bcPa\uff09\u5230\u55b7\u6c14\u5f0f\u98de\u673a\u8d77\u98de\u7684\u58f0\u97f3\uff08200Pa\uff09\uff0c\u58f0\u538b\u6bd4\u503c\u9ad8\u8fbe <strong>10,000,000:1<\/strong>\uff0c\u6839\u672c\u65e0\u6cd5\u7528\u65e5\u5e38\u6570\u5b57\u76f4\u89c2\u8868\u8fbe\u3002\u7528\u5bf9\u6570\u538b\u7f29\u4e4b\u540e\uff0c\u8fd9\u4e2a\u8303\u56f4\u53d8\u6210 <strong>0\uff5e140dB<\/strong>\uff0c\u4f18\u96c5\u3001\u76f4\u89c2\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1.2 \u5206\u8d1d\u7684\u57fa\u672c\u5b9a\u4e49<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u529f\u7387\u6bd4\u7684\u5206\u8d1d\u8868\u8fbe\uff1a<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img fetchpriority=\"high\" decoding=\"async\" width=\"526\" height=\"116\" src=\"https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-27.png\" alt=\"\" class=\"wp-image-160\" style=\"width:337px;height:auto\" srcset=\"https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-27.png 526w, https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-27-300x66.png 300w\" sizes=\"(max-width: 526px) 100vw, 526px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u7535\u538b\u4e0e\u58f0\u538b\u6bd4\u7684\u5206\u8d1d\u8868\u8fbe\uff1a<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7531\u4e8e\u529f\u7387\u4e0e\u7535\u538b\uff08\u6216\u58f0\u538b\uff09\u7684\u5e73\u65b9\u6210\u6b63\u6bd4\uff0c\u4ee3\u5165\u4e0a\u5f0f\u5f97\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" width=\"630\" height=\"132\" src=\"https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-52.png\" alt=\"\" class=\"wp-image-189\" style=\"width:335px;height:auto\" srcset=\"https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-52.png 630w, https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-52-300x63.png 300w\" sizes=\"(max-width: 630px) 100vw, 630px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u8fd9\u5c31\u662f\u4e3a\u4ec0\u4e48\u529f\u7387\u752810\u500d\u7cfb\u6570\uff0c\u7535\u538b\u4e0e\u58f0\u538b\u752820\u500d\u7cfb\u6570\u2014\u2014\u4e24\u8005\u672c\u8d28\u4e0a\u662f\u540c\u4e00\u4e2a\u516c\u5f0f\u7684\u4e0d\u540c\u5f62\u5f0f\u3002<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1.3 \u51e0\u4e2a\u5fc5\u8bb0\u7684\u5206\u8d1d\u6362\u7b97\u5173\u7cfb<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>\u7535\u5e73\u53d8\u5316<\/th><th>\u529f\u7387\u500d\u6570<\/th><th>\u7535\u538b\/\u58f0\u538b\u500d\u6570<\/th><th>\u542c\u611f\u53d8\u5316<\/th><\/tr><tr><td>+3 dB<\/td><td>\u00d7 2<\/td><td>\u00d7 1.41<\/td><td>\u7565\u5fae\u53d8\u54cd<\/td><\/tr><tr><td>+6 dB<\/td><td>\u00d7 4<\/td><td>\u00d7 2<\/td><td>\u660e\u663e\u53d8\u54cd<\/td><\/tr><tr><td>+10 dB<\/td><td>\u00d7 10<\/td><td>\u00d7 3.16<\/td><td>\u611f\u89c9\u54cd\u7ea62\u500d<\/td><\/tr><tr><td>+20 dB<\/td><td>\u00d7 100<\/td><td>\u00d7 10<\/td><td>\u611f\u89c9\u54cd\u7ea64\u500d<\/td><\/tr><tr><td>-3 dB<\/td><td>\u00d7 0.5<\/td><td>\u00d7 0.707<\/td><td>\u7565\u5fae\u53d8\u8f7b<\/td><\/tr><tr><td>-6 dB<\/td><td>\u00d7 0.25<\/td><td>\u00d7 0.5<\/td><td>\u660e\u663e\u53d8\u8f7b<\/td><\/tr><tr><td>-10 dB<\/td><td>\u00d7 0.1<\/td><td>\u00d7 0.316<\/td><td>\u611f\u89c9\u8f7b\u7ea6\u4e00\u534a<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u8bb0\u4f4f\u8fd9\u5f20\u8868\uff0c\u8bfb\u61c2\u6240\u6709\u97f3\u54cd\u53c2\u6570\u5c31\u4e0d\u518d\u56f0\u96be\u3002<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e8c\u3001dBSPL\uff1a\u58f0\u538b\u7ea7\uff0c\u63cf\u8ff0\u7a7a\u6c14\u4e2d\u7684\u58f0\u97f3<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">2.1 \u5b9a\u4e49\u4e0e\u53c2\u8003\u503c<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">dBSPL\uff08Sound Pressure Level\uff0c\u58f0\u538b\u7ea7\uff09\u662f\u63cf\u8ff0<strong>\u7a7a\u6c14\u4e2d\u58f0\u6ce2\u538b\u5f3a<\/strong>\u7684\u5355\u4f4d\uff0c\u53c2\u8003\u503c\u4e3a\u56fd\u9645\u6807\u51c6\u89c4\u5b9a\u7684\u4eba\u8033\u542c\u89c9\u9608\u503c\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" width=\"598\" height=\"84\" src=\"https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-29.png\" alt=\"\" class=\"wp-image-162\" style=\"width:437px;height:auto\" srcset=\"https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-29.png 598w, https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-29-300x42.png 300w\" sizes=\"(max-width: 598px) 100vw, 598px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u58f0\u538b\u7ea7\u516c\u5f0f\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"680\" height=\"110\" src=\"https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-30.png\" alt=\"\" class=\"wp-image-163\" style=\"width:435px;height:auto\" srcset=\"https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-30.png 680w, https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-30-300x49.png 300w\" sizes=\"(max-width: 680px) 100vw, 680px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u5176\u4e2d <img decoding=\"async\" src=\"\/\/www.zhihu.com\/equation?tex=p\" alt=\"p\"> \u4e3a\u5b9e\u6d4b\u58f0\u538b\u6709\u6548\u503c\uff08Pa\uff09\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2.2 \u5e38\u89c1\u58f0\u97f3\u7684 dBSPL \u53c2\u8003\u503c<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>\u58f0\u97f3\u6765\u6e90<\/th><th>\u58f0\u538b\u7ea7\uff08dBSPL\uff09<\/th><\/tr><tr><td>\u4eba\u8033\u542c\u89c9\u4e0b\u9650<\/td><td>0 dBSPL<\/td><\/tr><tr><td>\u5b89\u9759\u5367\u5ba4\u591c\u95f4<\/td><td>25\uff5e30 dBSPL<\/td><\/tr><tr><td>\u6b63\u5e38\u4ea4\u8c08\uff081m\u8ddd\u79bb\uff09<\/td><td>60\uff5e65 dBSPL<\/td><\/tr><tr><td>\u5bb6\u5ead\u5f71\u9662\u53c2\u8003\u7535\u5e73<\/td><td><strong>75 dBSPL<\/strong>\uff08Dolby\u5bb6\u5ead\u6807\u51c6\uff09<\/td><\/tr><tr><td>THX\u4e13\u4e1a\u5f71\u9662\u53c2\u8003\u7535\u5e73<\/td><td><strong>85 dBSPL<\/strong>\uff08\u9662\u7ebf\u6807\u51c6\uff09<\/td><\/tr><tr><td>\u73b0\u573a\u6f14\u5531\u4f1a\u524d\u6392<\/td><td>105\uff5e110 dBSPL<\/td><\/tr><tr><td>\u4eba\u8033\u75db\u89c9\u9608\u503c<\/td><td>\u7ea6 130\uff5e140 dBSPL<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"572\" src=\"https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-46-1024x572.png\" alt=\"\" class=\"wp-image-179\" srcset=\"https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-46-1024x572.png 1024w, https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-46-300x167.png 300w, https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-46-768x429.png 768w, https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-46.png 1376w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">2.3 \u91cd\u70b9\uff1a\u5bb6\u5ead\u5f71\u9662\u53c2\u8003\u7535\u5e73\u662f 75 dBSPL\uff0c\u4e0d\u662f 85 dBSPL<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u662f\u97f3\u54cd\u5de5\u7a0b\u5b9e\u8df5\u4e2d<strong>\u6700\u5e38\u89c1\u7684\u8bef\u533a<\/strong>\uff0c\u5fc5\u987b\u641e\u6e05\u695a\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>85 dBSPL \u662f\u9662\u7ebf\u6807\u51c6\uff08THX Reference Level\uff09\uff1a<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"484\" height=\"66\" src=\"https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-31.png\" alt=\"\" class=\"wp-image-164\" style=\"width:354px;height:auto\" srcset=\"https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-31.png 484w, https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-31-300x41.png 300w\" sizes=\"(max-width: 484px) 100vw, 484px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u6d4b\u8bd5\u6761\u4ef6\uff1a\u529f\u653e\u97f3\u91cf\u65cb\u94ae\u8c03\u81f3 <strong>0dB \u53c2\u8003\u4f4d\u7f6e<\/strong>\uff0c\u8f93\u5165 <strong>-20 dBFS \u7684\u7c89\u7ea2\u566a\u58f0<\/strong>\uff0c\u5728\u8046\u542c\u4f4d\uff08C\u52a0\u6743\u6d4b\u91cf\uff09\u5f97\u5230 85 dBSPL\u3002\u8fd9\u662f\u4e13\u4e1a\u7535\u5f71\u9662\u7684\u6821\u51c6\u57fa\u51c6\uff0c\u97f3\u91cf\u6781\u5927\uff0c\u957f\u65f6\u95f4\u8046\u542c\u4f1a\u635f\u4f24\u542c\u529b\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>75 dBSPL \u624d\u662f\u5bb6\u5ead\u5f71\u9662\u7684\u6b63\u786e\u6821\u51c6\u76ee\u6807\uff1a<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"638\" height=\"64\" src=\"https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-32.png\" alt=\"\" class=\"wp-image-165\" style=\"width:353px;height:auto\" srcset=\"https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-32.png 638w, https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-32-300x30.png 300w\" sizes=\"(max-width: 638px) 100vw, 638px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u5bb6\u5ead\u5f71\u9662\u53c2\u8003\u7535\u5e73\u6bd4\u9662\u7ebf\u4f4e 10 dB\uff0c\u539f\u56e0\u5982\u4e0b\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u2460 \u7a7a\u95f4\u5c3a\u5bf8\u5dee\u5f02\uff1a<\/strong> \u7535\u5f71\u9662\u5bb9\u79ef\u901a\u5e38\u8d85\u8fc7 1000 \u7acb\u65b9\u7c73\uff0c\u5bb6\u5ead\u5f71\u9662\u4e00\u822c\u4e3a 30\uff5e80 \u7acb\u65b9\u7c73\u3002\u76f8\u540c\u58f0\u538b\u7ea7\u5728\u5c0f\u7a7a\u95f4\u5185\u56e0\u6df7\u54cd\u80fd\u91cf\u53e0\u52a0\uff0c\u611f\u77e5\u54cd\u5ea6\u66f4\u9ad8\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u2461 \u8046\u542c\u8ddd\u79bb\u5dee\u5f02\uff1a<\/strong> \u58f0\u538b\u7ea7\u968f\u8ddd\u79bb\u8870\u51cf\u9075\u5faa\u5e73\u65b9\u53cd\u6bd4\u5b9a\u5f8b\uff0c\u6bcf\u8ddd\u79bb\u7ffb\u500d\u8870\u51cf 6 dB\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"646\" height=\"164\" src=\"https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-53.png\" alt=\"\" class=\"wp-image-191\" style=\"width:349px;height:auto\" srcset=\"https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-53.png 646w, https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-53-300x76.png 300w\" sizes=\"(max-width: 646px) 100vw, 646px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u7535\u5f71\u9662\u8046\u542c\u8ddd\u79bb\u7ea6 10\uff5e20 m\uff0c\u5bb6\u5ead\u5f71\u9662\u4ec5 2\uff5e4 m\uff0c\u8ddd\u79bb\u7f29\u77ed\u4e00\u534a\u5373\u589e\u52a0 6 dB\uff0c\u56e0\u6b64\u6574\u4f53\u53c2\u8003\u7535\u5e73\u4e0b\u8c03 10 dB \u662f\u5408\u7406\u8865\u507f\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u2462 \u542c\u529b\u4fdd\u62a4\u9700\u6c42\uff1a<\/strong> \u5bb6\u5ead\u573a\u666f\u957f\u65f6\u95f4\u8046\u542c\uff0c75 dBSPL \u662f\u517c\u987e\u6c89\u6d78\u611f\u4e0e\u542c\u529b\u5b89\u5168\u7684\u6700\u4f18\u9009\u62e9\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u5b8c\u6574\u53c2\u8003\u7535\u5e73\u5bf9\u7167\u8868\uff1a<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>\u5e94\u7528\u573a\u666f<\/th><th>\u53c2\u8003\u7535\u5e73<\/th><th>\u6807\u51c6\u4f9d\u636e<\/th><\/tr><tr><td>\u4e13\u4e1a\u5f55\u97f3\u68da\u76d1\u542c<\/td><td>83 dBSPL<\/td><td>K-system\uff08Bob Katz\uff09<\/td><\/tr><tr><td>THX \u8ba4\u8bc1\u9662\u7ebf<\/td><td>85 dBSPL<\/td><td>THX Reference<\/td><\/tr><tr><td>Dolby \u5bb6\u5ead\u5f71\u9662<\/td><td><strong>75 dBSPL<\/strong><\/td><td>Dolby Home Theater Spec<\/td><\/tr><tr><td>\u4f4e\u97f3\u70ae\u53c2\u8003\u7535\u5e73<\/td><td>\u4e3b\u58f0\u9053\u57fa\u7840\u4e0a <strong>+10 dB<\/strong><\/td><td>THX\/Dolby \u4f4e\u9891\u8865\u507f\u89c4\u8303<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u5de5\u7a0b\u5b9e\u8df5\u9a8c\u8bc1\uff1a<\/strong> \u5728\u5bb6\u5ead\u5f71\u9662\u7cfb\u7edf\u6821\u51c6\u4e2d\uff0c\u5c06\u529f\u653e\u97f3\u91cf\u8c03\u81f3 0 dB \u53c2\u8003\u4f4d\u7f6e\uff0c\u8f93\u5165 -20 dBFS \u7c89\u7ea2\u566a\u58f0\uff0c\u8046\u542c\u4f4d\u58f0\u538b\u8ba1\u663e\u793a <strong>75 dBSPL<\/strong>\uff0c\u5373\u8868\u660e\u7cfb\u7edf\u589e\u76ca\u7ed3\u6784\u6821\u51c6\u6b63\u786e\uff0c\u7b26\u5408 Dolby \u5bb6\u5ead\u5f71\u9662\u89c4\u8303\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2.4 \u97f3\u7bb1\u7075\u654f\u5ea6\u4e0e dBSPL \u7684\u5173\u7cfb<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u97f3\u7bb1\u7075\u654f\u5ea6\u7684\u6807\u51c6\u5b9a\u4e49\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"57\" src=\"https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-34-1024x57.png\" alt=\"\" class=\"wp-image-167\" style=\"aspect-ratio:17.857142857142858;width:517px;height:auto\" srcset=\"https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-34-1024x57.png 1024w, https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-34-300x17.png 300w, https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-34-768x43.png 768w, https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-34.png 1214w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ee5\u7075\u654f\u5ea6 88 dBSPL \u7684\u97f3\u7bb1\u4e3a\u4f8b\uff0c\u5728 1 m \u5904\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>\u8f93\u5165\u529f\u7387<\/th><th>\u4ea7\u751f\u58f0\u538b\u7ea7<\/th><\/tr><tr><td>1 W<\/td><td>88 dBSPL<\/td><\/tr><tr><td>2 W<\/td><td>91 dBSPL\uff08+3 dB\uff09<\/td><\/tr><tr><td>10 W<\/td><td>98 dBSPL\uff08+10 dB\uff09<\/td><\/tr><tr><td>100 W<\/td><td>108 dBSPL\uff08+20 dB\uff09<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u7075\u654f\u5ea6\u6bcf\u5dee 3 dB\uff0c\u9a71\u52a8\u5230\u76f8\u540c\u97f3\u91cf\u6240\u9700\u529f\u7387\u76f8\u5dee <strong>1 \u500d<\/strong>\u3002\u8fd9\u5c31\u662f\u4e3a\u4ec0\u4e48\u7075\u654f\u5ea6\u4f4e\u7684\u97f3\u7bb1\u9700\u8981\u66f4\u5927\u529f\u7387\u7684\u529f\u653e\u6765\u9a71\u52a8\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e09\u3001dBFS\uff1a\u6ee1\u523b\u5ea6\u5206\u8d1d\uff0c\u63cf\u8ff0\u6570\u5b57\u97f3\u9891\u7535\u5e73<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">3.1 \u5b9a\u4e49<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">dBFS\uff08Decibels relative to Full Scale\uff09\u662f\u6570\u5b57\u97f3\u9891\u7cfb\u7edf\u4e2d\u63cf\u8ff0<strong>\u4fe1\u53f7\u7535\u5e73<\/strong>\u7684\u5355\u4f4d\uff0c\u53c2\u8003\u503c\u4e3a\u6570\u5b57\u7cfb\u7edf\u7684<strong>\u6700\u5927\u91cf\u5316\u503c\uff08\u6ee1\u523b\u5ea6\uff09<\/strong>\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"476\" height=\"86\" src=\"https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-35.png\" alt=\"\" class=\"wp-image-168\" style=\"width:379px;height:auto\" srcset=\"https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-35.png 476w, https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-35-300x54.png 300w\" sizes=\"(max-width: 476px) 100vw, 476px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u6838\u5fc3\u7279\u6027\uff1adBFS \u7684\u6700\u5927\u503c\u4e3a 0 dBFS\uff0c\u6240\u6709\u5b9e\u9645\u4fe1\u53f7\u5747\u4e3a\u8d1f\u503c\u3002<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8d85\u8fc7 0 dBFS \u5373\u53d1\u751f<strong>\u6570\u5b57\u524a\u6ce2\uff08Digital Clipping\uff09<\/strong>\uff0c\u4ea7\u751f\u4e25\u91cd\u65b9\u6ce2\u5931\u771f\u4e14\u65e0\u6cd5\u6062\u590d\uff0c\u8fd9\u4e0e\u6a21\u62df\u7cfb\u7edf\u7684\u8f6f\u524a\u6ce2\u5b8c\u5168\u4e0d\u540c\uff0c\u5fc5\u987b\u7edd\u5bf9\u907f\u514d\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3.2 \u6570\u5b57\u97f3\u9891\u7684\u7535\u5e73\u6807\u51c6<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>\u5e94\u7528\u573a\u666f<\/th><th>\u5bf9\u9f50\u7535\u5e73<\/th><th>\u6700\u5927\u5cf0\u503c<\/th><th>\u6807\u51c6\u4f9d\u636e<\/th><\/tr><tr><td>\u5e7f\u64ad<\/td><td>-18 dBFS<\/td><td>-9 dBFS<\/td><td>EBU R68<\/td><\/tr><tr><td>\u7535\u5f71\u540e\u671f<\/td><td>-20 dBFS<\/td><td>-9 dBFS<\/td><td>SMPTE RP 200<\/td><\/tr><tr><td>\u5bb6\u5ead\u5f71\u9662\u84dd\u5149\u6bcd\u5e26<\/td><td>-20 dBFS<\/td><td>-3 dBFS<\/td><td>Dolby\u89c4\u8303<\/td><\/tr><tr><td>\u5f55\u97f3\u68da\u5f55\u97f3<\/td><td>-18 dBFS<\/td><td>-6 dBFS<\/td><td>AES\u63a8\u8350<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Cubasis 3 \u5f55\u97f3\u5efa\u8bae\uff1a<\/strong> \u5cf0\u503c\u7535\u5e73\u63a7\u5236\u5728 <strong>-12\uff5e-6 dBFS<\/strong>\uff0c\u4e3a\u540e\u671f\u6df7\u97f3\u4e0e\u6bcd\u5e26\u5904\u7406\u4fdd\u7559\u8db3\u591f\u52a8\u6001\u4f59\u91cf\uff0c\u907f\u514d\u6570\u5b57\u524a\u6ce2\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3.3 dBFS \u4e0e dBSPL \u7684\u5bf9\u5e94\u5173\u7cfb<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u6570\u5b57\u4fe1\u53f7\u7684 dBFS \u4e0e\u7a7a\u6c14\u4e2d\u7684 dBSPL\uff0c\u901a\u8fc7 D\/A \u8f6c\u6362\u5668\u4e0e\u529f\u653e\u589e\u76ca\u94fe\u5efa\u7acb\u5bf9\u5e94\u5173\u7cfb\u3002\u53c2\u7167 SMPTE RP 200 \u4e0e Dolby \u5bb6\u5ead\u5f71\u9662\u89c4\u8303\u7684\u6807\u51c6\u6821\u51c6\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"920\" height=\"66\" src=\"https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-36.png\" alt=\"\" class=\"wp-image-169\" style=\"aspect-ratio:13.941330235259947;width:453px;height:auto\" srcset=\"https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-36.png 920w, https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-36-300x22.png 300w, https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-36-768x55.png 768w\" sizes=\"(max-width: 920px) 100vw, 920px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"872\" height=\"54\" src=\"https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-37.png\" alt=\"\" class=\"wp-image-170\" style=\"aspect-ratio:16.150740242261104;width:469px;height:auto\" srcset=\"https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-37.png 872w, https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-37-300x19.png 300w, https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-37-768x48.png 768w\" sizes=\"(max-width: 872px) 100vw, 872px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u5373\u8f93\u5165 -20 dBFS \u7c89\u7ea2\u566a\u58f0\uff0c\u529f\u653e\u97f3\u91cf\u5728 0 dB \u53c2\u8003\u4f4d\u7f6e\u65f6\uff0c\u5bb6\u5ead\u5f71\u9662\u8046\u542c\u4f4d\u6d4b\u91cf\u5230 <strong>75 dBSPL<\/strong> \u8868\u660e\u7cfb\u7edf\u6821\u51c6\u6b63\u786e\uff0c\u9662\u7ebf\u8046\u542c\u4f4d\u6d4b\u91cf\u5230 <strong>85 dBSPL<\/strong> \u8868\u660e\u7cfb\u7edf\u6821\u51c6\u6b63\u786e\u3002\u4e24\u8005\u5dee\u5f02\u6765\u81ea\u529f\u653e\u589e\u76ca\u8bbe\u5b9a\u7684\u4e0d\u540c\uff0c\u800c\u975e\u6570\u5b57\u7535\u5e73\u6807\u51c6\u7684\u5dee\u5f02\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u56db\u3001dBu \u4e0e dBV\uff1a\u4e13\u4e1a\u4e0e\u6d88\u8d39\u7ea7\u97f3\u9891\u7684\u7535\u538b\u57fa\u51c6<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">4.1 dBu\uff1a\u4e13\u4e1a\u8bbe\u5907\u7684\u7535\u538b\u53c2\u8003<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">dBu \u662f\u4e13\u4e1a\u97f3\u9891\u8bbe\u5907\u7684\u7535\u538b\u53c2\u8003\u5355\u4f4d\uff0c\u53c2\u8003\u503c\u4e3a\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"378\" height=\"48\" src=\"https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-38.png\" alt=\"\" class=\"wp-image-171\" srcset=\"https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-38.png 378w, https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-38-300x38.png 300w\" sizes=\"(max-width: 378px) 100vw, 378px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u5386\u53f2\u6765\u6e90\uff1a600\u03a9 \u8d1f\u8f7d\u4e0a\u6d88\u8017 1 mW \u529f\u7387\u65f6\u5bf9\u5e94\u7684\u7535\u538b\u503c\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"386\" height=\"84\" src=\"https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-39.png\" alt=\"\" class=\"wp-image-172\" srcset=\"https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-39.png 386w, https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-39-300x65.png 300w\" sizes=\"(max-width: 386px) 100vw, 386px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e13\u4e1a\u8bbe\u5907\u6807\u51c6\u5de5\u4f5c\u7535\u5e73 +4 dBu \u5bf9\u5e94\u7535\u538b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"486\" height=\"60\" src=\"https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-40.png\" alt=\"\" class=\"wp-image-173\" style=\"aspect-ratio:8.101003561022985;width:324px;height:auto\" srcset=\"https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-40.png 486w, https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-40-300x37.png 300w\" sizes=\"(max-width: 486px) 100vw, 486px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">4.2 dBV\uff1a\u6d88\u8d39\u8bbe\u5907\u7684\u7535\u538b\u53c2\u8003<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">dBV \u53c2\u8003\u503c\u4e3a\u6070\u597d 1 V\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"324\" height=\"78\" src=\"https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-41.png\" alt=\"\" class=\"wp-image-174\" srcset=\"https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-41.png 324w, https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-41-300x72.png 300w\" sizes=\"(max-width: 324px) 100vw, 324px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u6d88\u8d39\u7ea7\u8bbe\u5907\u6807\u51c6\u5de5\u4f5c\u7535\u5e73 -10 dBV \u5bf9\u5e94\u7535\u538b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"466\" height=\"62\" src=\"https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-42.png\" alt=\"\" class=\"wp-image-175\" style=\"width:326px;height:auto\" srcset=\"https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-42.png 466w, https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-42-300x40.png 300w\" sizes=\"(max-width: 466px) 100vw, 466px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">4.3 \u4e13\u4e1a\u4e0e\u6d88\u8d39\u7ea7\u7684\u7535\u5e73\u5dee\uff1a\u7ea6 12 dB<\/h3>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"346\" height=\"46\" src=\"https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-43.png\" alt=\"\" class=\"wp-image-176\" style=\"width:230px;height:auto\" srcset=\"https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-43.png 346w, https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-43-300x40.png 300w\" sizes=\"(max-width: 346px) 100vw, 346px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"418\" height=\"58\" src=\"https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-44.png\" alt=\"\" class=\"wp-image-177\" style=\"aspect-ratio:7.208049334631613;width:280px;height:auto\" srcset=\"https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-44.png 418w, https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-44-300x42.png 300w\" sizes=\"(max-width: 418px) 100vw, 418px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u5de5\u7a0b\u5b9e\u8df5\u610f\u4e49\u6781\u4e3a\u91cd\u8981\uff1a<\/strong> \u4e13\u4e1a\u529f\u653e\u6216\u8c03\u97f3\u53f0\uff08+4 dBu \u8f93\u5165\uff09\u4e0e\u5bb6\u7528\u64ad\u653e\u5668\uff08-10 dBV \u8f93\u51fa\uff09\u76f4\u63a5\u8fde\u63a5\u65f6\uff0c\u5b58\u5728\u7ea6 <strong>12 dB \u7684\u7535\u5e73\u5dee<\/strong>\u3002\u82e5\u4e0d\u5904\u7406\uff0c\u8f7b\u5219\u5e95\u566a\u62ac\u9ad8\uff0c\u91cd\u5219\u4fe1\u53f7\u5931\u771f\u3002\u89e3\u51b3\u65b9\u6cd5\uff1a\u901a\u8fc7\u529f\u653e\u589e\u76ca\u65cb\u94ae\u8865\u507f\uff0c\u6216\u4f7f\u7528\u4e13\u4e1a\u7684\u7535\u5e73\u5339\u914d\u53d8\u538b\u5668\uff08DI Box\uff09\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"572\" src=\"https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-50-1024x572.png\" alt=\"\" class=\"wp-image-183\" srcset=\"https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-50-1024x572.png 1024w, https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-50-300x167.png 300w, https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-50-768x429.png 768w, https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-50.png 1376w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e94\u3001\u7efc\u5408\u5bf9\u6bd4\uff1a\u4e00\u5f20\u8868\u770b\u61c2\u6240\u6709 dB \u5355\u4f4d<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>\u5355\u4f4d<\/th><th>\u53c2\u8003\u503c<\/th><th>\u5e94\u7528\u573a\u666f<\/th><th>\u5178\u578b\u503c<\/th><\/tr><tr><td>dBSPL<\/td><td>20 \u03bcPa<\/td><td>\u7a7a\u6c14\u58f0\u538b\u6d4b\u91cf<\/td><td>75 dBSPL\uff08\u5bb6\u5ead\u5f71\u9662\u53c2\u8003\uff09<\/td><\/tr><tr><td>dBFS<\/td><td>\u6570\u5b57\u6ee1\u523b\u5ea6<\/td><td>\u6570\u5b57\u97f3\u9891\u7535\u5e73<\/td><td>-18 dBFS\uff08\u5f55\u97f3\u5bf9\u9f50\uff09<\/td><\/tr><tr><td>dBu<\/td><td>0.7746 V<\/td><td>\u4e13\u4e1a\u97f3\u9891\u8bbe\u5907<\/td><td>+4 dBu\uff08\u4e13\u4e1a\u6807\u51c6\uff09<\/td><\/tr><tr><td>dBV<\/td><td>1 V<\/td><td>\u6d88\u8d39\u97f3\u9891\u8bbe\u5907<\/td><td>-10 dBV\uff08\u6c11\u7528\u6807\u51c6\uff09<\/td><\/tr><tr><td>dBr<\/td><td>\u4efb\u610f\u53c2\u8003\u503c<\/td><td>\u76f8\u5bf9\u7535\u5e73\u5dee<\/td><td>-3 dBr\uff08-3 dB\u8870\u51cf\u70b9\uff09<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u516d\u3001\u5b9e\u6218\uff1a\u5bb6\u5ead\u5f71\u9662\u7cfb\u7edf\u7684\u589e\u76ca\u7ed3\u6784\u8bbe\u8ba1<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u7406\u89e3\u4e86\u4ee5\u4e0a\u6240\u6709\u5355\u4f4d\uff0c\u6765\u770b\u4e00\u4e2a\u5b8c\u6574\u7684\u5bb6\u5ead\u5f71\u9662\u589e\u76ca\u94fe\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"122\" src=\"https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-45-1024x122.png\" alt=\"\" class=\"wp-image-178\" style=\"aspect-ratio:8.416622830089427;width:532px;height:auto\" srcset=\"https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-45-1024x122.png 1024w, https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-45-300x36.png 300w, https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-45-768x91.png 768w, https:\/\/www.bgdyx.com\/wp-content\/uploads\/2026\/06\/image-45.png 1498w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u6bcf\u4e2a\u73af\u8282\u7684\u589e\u76ca\u4e0e\u635f\u8017\u7cbe\u786e\u5339\u914d\uff0c\u7cfb\u7edf\u5de5\u4f5c\u5728\u6700\u4f18\u4fe1\u566a\u6bd4\u72b6\u6001\uff0c\u65e2\u4e0d\u524a\u6ce2\uff0c\u4e5f\u4e0d\u56e0\u589e\u76ca\u4e0d\u8db3\u8ba9\u5e95\u566a\u62ac\u9ad8\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u6821\u51c6\u9a8c\u8bc1\u65b9\u6cd5\uff08\u5de5\u7a0b\u5b9e\u64cd\uff09\uff1a<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u529f\u653e\u97f3\u91cf\u8c03\u81f3 <strong>0 dB \u53c2\u8003\u4f4d\u7f6e<\/strong><\/li>\n\n\n\n<li>\u4fe1\u53f7\u6e90\u8f93\u5165 <strong>-20 dBFS \u7c89\u7ea2\u566a\u58f0<\/strong>\uff08\u5168\u9891\u5e26\uff09<\/li>\n\n\n\n<li>\u5728\u8046\u542c\u4f4d\u7528\u58f0\u538b\u8ba1\uff08C\u52a0\u6743\uff0c\u6162\u901f\u6863\uff09\u6d4b\u91cf<\/li>\n\n\n\n<li>\u6bcf\u53ea\u97f3\u7bb1\u5206\u522b\u6d4b\u91cf\uff0c\u76ee\u6807\u503c <strong>75 dBSPL \u00b1 1 dB<\/strong><\/li>\n\n\n\n<li>\u4f4e\u97f3\u70ae\u76ee\u6807\u503c <strong>75 dBSPL<\/strong>\uff08\u90e8\u5206\u89c4\u8303\u8981\u6c42 +10 dB \u5373 85 dBSPL\uff0c\u9700\u4f9d\u636e\u5177\u4f53\u6807\u51c6\u6267\u884c\uff09<\/li>\n\n\n\n<li>\u5404\u58f0\u9053\u6d4b\u91cf\u503c\u504f\u5dee\u8d85\u8fc7 \u00b13 dB \u65f6\uff0c\u901a\u8fc7\u529f\u653e\u5404\u58f0\u9053\u589e\u76ca\u5fae\u8c03\u8865\u507f<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u5c31\u662f\u4e13\u4e1a\u5de5\u7a0b\u5e08\u6240\u8bf4\u7684<strong>\u589e\u76ca\u7ed3\u6784\uff08Gain Structure\uff09<\/strong>\uff0c\u4e5f\u662f\u5bb6\u5ead\u5f71\u9662\u8c03\u6821\u4e2d\u6700\u5bb9\u6613\u88ab\u5ffd\u89c6\u3001\u4f46\u5f71\u54cd\u6700\u6df1\u8fdc\u7684\u73af\u8282\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e03\u3001\u603b\u7ed3<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>dB<\/strong> \u672c\u8eab\u53ea\u662f\u65e0\u91cf\u7eb2\u7684\u6bd4\u503c\u5bf9\u6570\uff0c\u5fc5\u987b\u914d\u5408\u53c2\u8003\u503c\u624d\u6709\u610f\u4e49<\/li>\n\n\n\n<li><strong>dBSPL<\/strong> \u63cf\u8ff0\u7a7a\u6c14\u58f0\u538b\uff0c\u5bb6\u5ead\u5f71\u9662\u53c2\u8003\u7535\u5e73\u662f <strong>75 dBSPL<\/strong>\uff0c\u9662\u7ebf\u53c2\u8003\u7535\u5e73\u662f <strong>85 dBSPL<\/strong>\uff0c\u4e24\u8005\u76f8\u5dee 10 dB\uff0c\u4e0d\u53ef\u6df7\u6dc6<\/li>\n\n\n\n<li><strong>dBFS<\/strong> \u63cf\u8ff0\u6570\u5b57\u7cfb\u7edf\u7535\u5e73\uff0c0 dBFS \u662f\u4e0a\u9650\uff0c\u53ea\u80fd\u4e3a\u8d1f\u503c\uff0c\u8d85\u8fc7\u5373\u4ea7\u751f\u4e0d\u53ef\u9006\u7684\u6570\u5b57\u524a\u6ce2\u5931\u771f<\/li>\n\n\n\n<li><strong>dBu \/ dBV<\/strong> \u63cf\u8ff0\u6a21\u62df\u7535\u8def\u7535\u538b\uff0c\u4e13\u4e1a\u4e0e\u6d88\u8d39\u8bbe\u5907\u76f8\u5dee\u7ea6 <strong>12 dB<\/strong>\uff0c\u6df7\u63a5\u65f6\u5fc5\u987b\u5904\u7406\u7535\u5e73\u5dee<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u771f\u6b63\u7406\u89e3\u5206\u8d1d\uff0c\u662f\u8bfb\u61c2\u4e00\u5207\u97f3\u54cd\u53c2\u6570\u7684\u57fa\u7840\uff0c\u4e5f\u662f\u4ece&#8221;\u53d1\u70e7\u53cb&#8221;\u8fc8\u5411&#8221;\u97f3\u54cd\u5de5\u7a0b\u5e08&#8221;\u7684\u7b2c\u4e00\u6b65\u3002<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u58f0\u97f3\u7684\u672c\u8d28\u662f\u7269\u7406\uff0c\u7269\u7406\u7684\u8bed\u8a00\u662f\u6570\u5b66\uff0c\u6570\u5b66\u7684\u5de5\u5177\u662f\u5bf9\u6570\u3002\u641e\u61c2\u4e86\u5206\u8d1d\uff0c\u4f60\u5c31\u638c\u63e1\u4e86\u97f3\u54cd\u4e16\u754c\u7684\u901a\u7528\u8bed\u8a00\u3002<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u53c2\u8003\u6587\u732e\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>IEC 60268, Sound System Equipment, International Electrotechnical Commission<\/li>\n\n\n\n<li>THX Ltd. Official FAQ, https:\/\/www.thx.com\/faq\/<\/li>\n\n\n\n<li>Dolby Atmos Home Theater Installation Guidelines R3.1, Dolby Laboratories, 2018<\/li>\n\n\n\n<li>AES17, Measurement of Digital Audio Equipment, Audio Engineering Society<\/li>\n\n\n\n<li>ISO 226:2003, Acoustics \u2014 Normal equal-loudness-level contours<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u4f5c\u8005\uff1a\u5f20\u4e4b\u5f6c | \u6210\u90fd\u5e02\u5b8f\u5a01\u89c6\u542c\u79d1\u6280\u6709\u9650\u516c\u53f8\u6280\u672f\u603b\u76d1 | \u516c\u4f17\u53f7\uff1a\u5f6c\u54e5\u61c2\u97f3\u54cd | \u7f51\u7ad9\uff1abgdyx.com<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5bfc\u8bed &#8220;\u8fd9\u4e2a\u97f3\u7bb1\u7075\u654f\u5ea6 88 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":179,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center 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