{"id":11100,"date":"2024-12-23T05:58:29","date_gmt":"2024-12-22T21:58:29","guid":{"rendered":"http:\/\/yptk.cn\/?p=11100"},"modified":"2024-12-24T07:22:15","modified_gmt":"2024-12-23T23:22:15","slug":"%e9%9f%b3%e9%a2%91%e5%9f%ba%e7%a1%80","status":"publish","type":"post","link":"http:\/\/yptk.cn\/index.php\/2024\/12\/23\/%e9%9f%b3%e9%a2%91%e5%9f%ba%e7%a1%80\/","title":{"rendered":"\u97f3\u9891\u57fa\u7840"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">\u97f3\u9891\u5e38\u8bc6<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u58f0\u97f3\u662f\u6307\u58f0\u6ce2\u4f5c\u7528\u4e8e\u542c\u89c9\u5668\u5b98\u6240\u5f15\u8d77\u7684\u4e00\u79cd\u4e3b\u89c2\u611f\u89c9\u3002<br>\u4eba\u8033\u53ef\u542c\u8303\u56f4\u662f20Hz~20KHz\u3002\uff08\u5c0f\u4e8e20Hz\u4e3a\u6b21\u58f0\u6ce2\uff0c\u5927\u4e8e20KHz\u4e3a\u8d85\u58f0\u6ce2\u3002\uff09<br>\u8bed\u97f3\u8303\u56f4300~3400Hz<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u97f3\u9891\u57fa\u7840<\/h2>\n\n\n\n<p 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class=\"wp-block-heading\">\u97f3\u9891\u7684\u6570\u5b57\u5316<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u73b0\u5b9e\u4e2d\u7684\u58f0\u97f3\u5728\u65f6\u95f4\u4e0a\u662f\u8fde\u7eed\u7684\u6ce2\u5f62\uff0c\u662f\u6a21\u62df\u91cf\u3002\u800c\u6211\u4eec\u65e5\u5e38\u542c\u5230\u7684\u7528\u624b\u673a\u6216\u8005\u7535\u8111\u64ad\u653e\u7684\u662f\u79bb\u6563\u7684\u6570\u5b57\u97f3\u9891\u3002<br>\u90a3\u4e48\uff0c\u8ba1\u7b97\u673a\u662f\u5982\u4f55\u7406\u89e3\u3001\u5b58\u50a8\u548c\u5904\u7406\u97f3\u9891\u7684\u5462\uff1f<br>\u58f0\u97f3\u7684\u91c7\u96c6\uff0c\u9700\u8981\u7ecf\u8fc7 ADC \u5904\u7406\u8f6c\u4e3a\u6570\u5b57\u4fe1\u53f7\uff0c\u6700\u5e38\u89c1\u662f ADC \u8f6c\u5316\u65b9\u5f0f\u662f\u8109\u51b2\u7f16\u7801\u8c03\u5236PCM (Plus Code Modulation)\u3002PCM \u7f16\u7801\u9700\u8981\u7ecf\u8fc7\u91c7\u6837\u3001\u91cf\u5316\u3001\u7f16\u78013\u4e2a\u6b65\u9aa4\u5904\u7406\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"720\" height=\"540\" src=\"http:\/\/yptk.cn\/wp-content\/uploads\/2024\/12\/v2-e0c9efa407ccec55b8399e01e2bbd5bd_720w.webp\" alt=\"\" class=\"wp-image-11118\" srcset=\"http:\/\/yptk.cn\/wp-content\/uploads\/2024\/12\/v2-e0c9efa407ccec55b8399e01e2bbd5bd_720w.webp 720w, http:\/\/yptk.cn\/wp-content\/uploads\/2024\/12\/v2-e0c9efa407ccec55b8399e01e2bbd5bd_720w-300x225.webp 300w, http:\/\/yptk.cn\/wp-content\/uploads\/2024\/12\/v2-e0c9efa407ccec55b8399e01e2bbd5bd_720w-240x180.webp 240w\" sizes=\"auto, (max-width: 720px) 100vw, 720px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\uff081\uff09\u91c7\u6837\uff0c\u628a\u65f6\u95f4\u8f6c\u6362\u6210\u79bb\u6563\u503c\u3002\u97f3\u9891\u6570\u5b57\u5316\u9700\u8981\u9996\u5148\u6309\u7167\u4e00\u5b9a\u7684\u65f6\u95f4\u95f4\u9694\u5c06\u8fde\u7eed\u53d8\u5316\u7684\u6a21\u62df\u4fe1\u53f7\u8fdb\u884c\u91c7\u6837\u3002\u8fd9\u4e2a\u65f6\u95f4\u95f4\u9694\u79f0\u4e3a\u91c7\u6837\u5468\u671f T\uff0c1\/T 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src=\"http:\/\/yptk.cn\/wp-content\/uploads\/2024\/12\/v2-b5a9579b53c74f932f080601e1468400.jpg\" alt=\"\" class=\"wp-image-11124\" srcset=\"http:\/\/yptk.cn\/wp-content\/uploads\/2024\/12\/v2-b5a9579b53c74f932f080601e1468400.jpg 361w, http:\/\/yptk.cn\/wp-content\/uploads\/2024\/12\/v2-b5a9579b53c74f932f080601e1468400-300x184.jpg 300w\" sizes=\"auto, (max-width: 361px) 100vw, 361px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0a\u4e0b\u6ce2\u5f62\u4e4b\u6240\u4ee5\u4e0d\u543b\u5408\uff0c\u662f\u56e0\u4e3a\u91c7\u6837\u70b9\u4e0d\u591f\u591a\uff0c\u6216\u662f\u91c7\u6837\u9891\u7387\u4e0d\u591f\u9ad8\u3002<br>\u6839\u636eNyquist\u91c7\u6837\u5b9a\u5f8b\uff0c\u91c7\u6837\u7387\u4e0d\u5e94\u4f4e\u4e8e\u6a21\u62df\u4fe1\u53f7\u9891\u7387\u76842\u500d\u3002\u4e5f\u5c31\u662f\u8bf4\u81f3\u5c11\u534a\u5468\u671f\u91c7\u6837\u4e00\u6b21\uff0c\u624d\u80fd\u4e0d\u5931\u771f\u3002\u7531\u4e8e\u4eba\u8033\u7684\u53ef\u63a5\u53d7\u58f0\u97f3\u9891\u7387\u8303\u56f4\u572820Hz~20KHz\uff0c\u6240\u4ee5\u91c7\u6837\u7387\u5e94\u8be5\u572840KHz\u4e4b\u4e0a\u3002\u67d0\u4e9b\u4eba\u80fd\u542c\u5230\u7565\u9ad8\u4e8e20KHz\u7684\u58f0\u97f3\uff0c\u7559\u4e0b\u4e00\u4e9b\u7f13\u5b58\u7a7a\u95f4\uff0c\u91c7\u96c6\u7387\u5b9a\u4e3a44.1KHz\uff0c\u8fd9\u662f\u6700\u4e3a\u5e38\u89c1\u7684\u91c7\u6837\u7387\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u91c7\u6837\u9891\u7387\uff1a\u6bcf\u79d2\u949f\u91c7\u6837\u7684\u70b9\u7684\u4e2a\u6570\u3002\u5e38\u7528\u7684\u91c7\u6837\u9891\u7387\u6709\uff1a<br>22000\uff0822kHz\uff09\uff1a\u65e0\u7ebf\u5e7f\u64ad\u3002<br>44100\uff0844.1kHz\uff09\uff1aCD\u97f3\u8d28\u3002<br>48000\uff0848kHz\uff09\uff1a\u6570\u5b57\u7535\u89c6\uff0cDVD\u3002<br>96000\uff0896kHz\uff09\uff1a\u84dd\u5149\uff0c\u9ad8\u6e05DVD\u3002<br>192000(192kHz\uff09\uff1a\u84dd\u5149\uff0c\u9ad8\u6e05DVD<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uff082\uff09\u91cf\u5316\uff0c\u628a\u5e45\u5ea6\u8f6c\u6362\u6210\u79bb\u6563\u503c\u3002\u6bcf\u9694\u4e00\u5b9a\u7684\u65f6\u95f4\u95f4\u9694\u5bf9\u6ce2\u5f62\u53d6\u6837\u4e00\u6b21\uff0c\u53d6\u6837\u6ce2\u5f62\u88ab\u91cf\u5316\u4e3a\u540c\u4e00\u4e2a\u91cf\u5316\u503c\uff0c\u6211\u4eec\u4e00\u822c\u4f7f\u7528\u4e8c\u8fdb\u5236\u91cf\u5316\uff0c\u6240\u4ee5\u91cf\u5316\u503c\u53ea\u6709 0 \u548c 1\u3002\u5728\u91c7\u6837\u5468\u671f T \u5185\uff0c\u91cf\u5316\u4ea7\u751f\u7684\u4e8c\u8fdb\u5236\u4f4d\u6570\u79f0\u4e3a\u91c7\u6837\u7684\u6bd4\u7279\u6570\u6216\u91c7\u6837\u4f4d\u6570\uff0c\u91c7\u6837\u4f4d\u6570\u5e38\u89c1\u7684\u6709 8 \u4f4d\u300112 \u4f4d\u548c 16 \u4f4d\u3002\u6bd4\u7279\u6570\u8d8a\u591a\uff0c\u91cf\u5316\u7684\u8d28\u91cf\u8d8a\u9ad8\uff0c\u6570\u636e\u91cf\u4e5f\u8d8a\u5927\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u91c7\u6837\u4e0e\u91cf\u5316\u7684\u5173\u7cfb\u5982\u56fe <\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"461\" height=\"313\" src=\"http:\/\/yptk.cn\/wp-content\/uploads\/2024\/12\/v2-1466db087060d946e3793224b71fa50c.jpg\" alt=\"\" class=\"wp-image-11121\" srcset=\"http:\/\/yptk.cn\/wp-content\/uploads\/2024\/12\/v2-1466db087060d946e3793224b71fa50c.jpg 461w, http:\/\/yptk.cn\/wp-content\/uploads\/2024\/12\/v2-1466db087060d946e3793224b71fa50c-300x204.jpg 300w\" sizes=\"auto, (max-width: 461px) 100vw, 461px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u6a2a\u5750\u6807\u662f\u65f6\u95f4\u8f74\uff08\u91c7\u6837\u9891\u7387\uff09\uff0c\u7eb5\u5750\u6807\u662f\u5e45\u5ea6\u503c\uff08\u91cf\u5316\u5206\u8fa8\u7387\uff09\uff0c\u66f2\u7ebf\u4ee3\u8868\u7684\u662f\u6a21\u62df\u4fe1\u53f7\u5bf9\u5e94\u7684\u6ce2\u52a8\u66f2\u7ebf\uff0c\u7070\u8272\u7684\u65b9\u683c\u662f\u91c7\u6837\u91cf\u5316\u540e\u7684\u6240\u5f97\u7ed3\u679c\u3002\u7531\u56fe\u4e2d\u53ef\u4ee5\u5f97\u77e5\uff0c\u5f53\u9891\u7387\u8d8a\u9ad8\uff08\u65f6\u95f4\u95f4\u9694\u8d8a\u77ed\uff09\uff0c\u91cf\u5316\u6df1\u5ea6\uff08\u91cf\u5316\u5206\u8fa8\u7387\uff09\u8d8a\u5927\uff0c\u4e8c\u8005\u7684\u8f6e\u5ed3\u8d8a\u543b\u5408\uff0c\u8fd9\u4e5f\u8bf4\u660e\u6570\u5b57\u5316\u7684\u4fe1\u53f7\u80fd\u66f4\u597d\u5730\u4fdd\u6301\u6a21\u62df\u97f3\u9891\u4fe1\u53f7\u7684\u5f62\u72b6\uff0c\u6709\u5229\u4e8e\u4fdd\u6301\u539f\u59cb\u58f0\u97f3\u7684\u771f\u5b9e\u60c5\u51b5\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u6570\u5b57\u97f3\u9891\u7684\u8861\u91cf\u6307\u6807\u4e2d\uff0c\u91c7\u6837\u9891\u7387\u7684\u5355\u4f4d\u662fHz\uff0c\u91cf\u5316\u6df1\u5ea6\u4e00\u822c\u7528\u6bd4\u7279\uff08bit\uff09\u6765\u5ea6\u91cf\u3002\u4f8b\u5982\uff0c\u67d0\u4e00\u97f3\u9891\u7684\u6570\u5b57\u5316\u6307\u6807\u662f 44.1 kHz\uff0c8 \u4e2a\u6bd4\u7279\u4f4d\u3002\u90a3\u4e48\u8fd9\u91cc\u7684 44.1 kHz \u6bd4\u8f83\u5bb9\u6613\u7406\u89e3\uff0c\u4f46 8 \u6bd4\u7279\u4f4d\u5e76\u4e0d\u662f\u8bf4\u628a\u67d0\u4e00\u5355\u4f4d\u7684\u7535\u538b\uff08\u7535\u6d41\uff09\u503c\u5206\u6210 8 \u4efd\uff0c\u800c\u662f\u5206\u6210 2<sup>8<\/sup>=256 \u4efd\uff1b\u540c\u7406 16 \u4f4d\u662f\u628a\u7eb5\u5750\u6807\u5206\u6210 2<sup>16<\/sup>=65536 \u4efd\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uff083\uff09\u7f16\u7801\uff0c\u6309\u7167\u4e00\u5b9a\u7684\u683c\u5f0f\u628a\u7ecf\u8fc7\u91c7\u6837\u548c\u91cf\u5316\u5f97\u5230\u7684\u79bb\u6563\u6570\u636e\u8bb0\u5f55\u4e0b\u6765\u3002\u5e76\u5728\u6709\u6548\u7684\u6570\u636e\u4e2d\u52a0\u5165\u4e00\u4e9b\u7528\u4e8e\u7ea0\u9519\u3001\u540c\u6b65\u548c\u63a7\u5236\u7684\u6570\u636e\u3002\u5728\u6570\u636e\u56de\u653e\u65f6\uff0c\u53ef\u4ee5\u6839\u636e\u6240\u8bb0\u5f55\u7684\u7ea0\u9519\u6570\u636e\u5224\u522b\u8bfb\u51fa\u7684\u97f3\u9891\u6570\u636e\u662f\u5426\u6709\u9519\uff0c\u5982\u5728\u4e00\u5b9a\u8303\u56f4\u5185\u6709\u9519\uff0c\u53ef\u52a0\u4ee5\u7ea0\u6b63\u3002\u6a21\u62df\u4fe1\u53f7\u7ecf\u8fc7\u91c7\u6837\u548c\u91cf\u5316\u4ee5\u540e\uff0c\u5f62\u6210\u4e00\u7cfb\u5217\u7684\u79bb\u6563\u4fe1\u53f7\u2014\u2014\u8109\u51b2\u6570\u5b57\u4fe1\u53f7\uff08\u4e8c\u8fdb\u5236\u7684 0 \u548c 1\uff09\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b58\u50a8\u6587\u4ef6\u5927\u5c0f\u7684\u8ba1\u7b97\uff1a\u7801\u7387=\u91c7\u6837\u7387 x \u4f4d\u6df1\u5ea6 x \u58f0\u9053<br>\u6240\u4ee5\uff0c\u6587\u4ef6\u7801\u7387= 44.1Khz x 16\u4f4d x 2\u58f0\u9053 = 1411.2 Kbps\uff1b\u6587\u4ef6\u5927\u5c0f = \u7801\u7387 x \u65f6\u957f=1411.2 Kbps x (3 x 60 + 47 )s = 1411.2Kbps x 227s=38102.4 Kb= 37.2M\uff0c\u8fd1\u4f3c\u7b49\u4e8emediainfo\u5de5\u5177\u663e\u793a\u7684\u6587\u4ef6\u5927\u5c0f38.3M\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u58f0\u97f3\u8bc4\u4ef7\uff1a<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e00\u3001\u9891\u54cd\u66f2\u7ebf<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">1\u3001\u9891\u54cd\u66f2\u7ebfEQ\uff1a\u7528\u4e8e\u63cf\u8ff0\u8bbe\u5907\u5728\u4e0d\u540c\u9891\u7387\u4e0b\u7684\u54cd\u5e94\u80fd\u529b\uff0c\u5373\u8bbe\u5907\u5bf9\u4e0d\u540c\u9891\u7387\u58f0\u97f3\u7684\u653e\u5927\u6216\u8870\u51cf\u7a0b\u5ea6\u3002<br>\u9891\u54cd\u66f2\u7ebf\u6a2a\u8f74\u8868\u793a\u9891\u7387\uff0c\u7eb5\u8f74\u8868\u793a\u589e\u76ca\u6216\u8870\u51cf\u7684\u7a0b\u5ea6\u3002\u9891\u54cd\u66f2\u7ebf\u53ef\u4ee5\u663e\u793a\u8bbe\u5907\u5728\u4e0d\u540c\u9891\u7387\u4e0b\u7684\u76f8\u5bf9\u97f3\u91cf\u6c34\u5e73\u3002\uff08\u76f8\u5f53\u4e8e\u76f8\u673a\u955c\u5934\u7684MTF\u66f2\u7ebf\uff0c\u5373\u5bf9\u58f0\u97f3\u7684\u8fd8\u539f\u80fd\u529b\u3002\uff09<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"618\" height=\"368\" src=\"http:\/\/yptk.cn\/wp-content\/uploads\/2024\/12\/25d4ef5d00a14d1df92127ab4131575c_r.jpg\" alt=\"\" class=\"wp-image-11144\" srcset=\"http:\/\/yptk.cn\/wp-content\/uploads\/2024\/12\/25d4ef5d00a14d1df92127ab4131575c_r.jpg 618w, http:\/\/yptk.cn\/wp-content\/uploads\/2024\/12\/25d4ef5d00a14d1df92127ab4131575c_r-300x179.jpg 300w\" sizes=\"auto, (max-width: 618px) 100vw, 618px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u8bf4\u5230\u9891\u54cd\u66f2\u7ebf\u5c31\u9700\u8981\u5148\u641e\u61c2\u9891\u54cd\u7279\u6027\uff0c\u8f93\u51fa\u9891\u7387\u4e0e\u8f93\u5165\u9891\u7387\u4e4b\u6bd4\u5c31\u662f\u9891\u54cd\u7279\u6027\u3002\u5728\u4e1a\u754c\u7684\u505a\u6cd5\u662f\u5bf9\u8fd9\u4e2a\u6bd4\u503c\u53d6\u6a21\u7136\u540e\u518d\u53d6\u5bf9\u6570\u518d\u4e58\u4ee520\u6362\u7b97\u4e3a\u5206\u8d1d\uff08dB\uff09\uff0c\u7136\u540e\u5c31\u6210\u8f93\u51fa\u9891\u8c31\u5e45\u503c(dB)\u4e0e\u8f93\u5165\u9891\u8c31\u5e45\u503c(dB)\u4e4b\u5dee\u4e86\u3002\u4e25\u683c\u6765\u8bf4\uff0c\u8fd9\u4e2a\u9891\u54cd\u7279\u6027\u5e94\u8be5\u5305\u62ec\u5e45\u503c\u7279\u6027\u548c\u76f8\u4f4d\u7279\u6027\u3002\u901a\u5e38\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u4e0d\u4f1a\u7279\u522b\u5173\u5fc3\u5e45\u503c\u7684\u7edd\u5bf9\u5927\u5c0f\uff0c\u800c\u662f\u5173\u5fc3\u76f8\u5bf9\u7684\u5927\u5c0f\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7406\u60f3\u7684\u76d1\u542c\u7cfb\u7edf\uff0c\u9891\u7387\u54cd\u5e94\u66f2\u7ebf\u5e94\u8be5\u8f83\u4e3a\u5e73\u76f4\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u76d1\u542c\u7cfb\u7edf\u5fc5\u987b\u5728\u5404\u4e2a\u9891\u7387\u70b9\u4e0a\u7684\u8868\u73b0\u90fd\u975e\u5e38\u4e00\u81f4\u3001\u7a33\u5b9a\u3002\u58f0\u97f3\u8fdb\u5165\u7cfb\u7edf\u518d\u88ab\u56de\u653e\u51fa\u6765\uff0c\u4e0d\u4f1a\u88ab\u6539\u53d8\u4e86\u539f\u6837\u3002<br>\u73b0\u5b9e\u4e16\u754c\u4e2d\uff0c\u9891\u54cd\u66f2\u7ebf\u7edd\u5bf9\u5e73\u76f4\u7684\u7406\u60f3\u7cfb\u7edf\u662f\u4e0d\u5b58\u5728\u7684\u3002\u66f2\u7ebf\u4e0a\u603b\u6709\u4e9b\u5751\u6d3c\u8d77\u4f0f\u2014\u2014\u4f46\u5b83\u5230\u5e95\u662f\u5e73\u7f13\u4e2d\u7565\u5e26\u201c\u6d9f\u6f2a\u201d\uff0c\u8fd8\u662f\u5927\u8d77\u5927\u843d\u50cf\u505a\u8fc7\u5c71\u8f66\uff1f\u6b64\u65f6\u5c31\u8be5\u770b\u770b\u201c\u00b1 x dB\u201d\u4e86\u3002\u8fd8\u62ffGenelec 8030B\u6765\u770b\uff0c\u5b83\u9891\u7387\u54cd\u5e94\u7684\u53e6\u4e00\u79cd\u8868\u793a\u65b9\u6cd5\u662f\uff1a\u00b12 dB (58Hz &#8211; 20kHz)<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"526\" src=\"http:\/\/yptk.cn\/wp-content\/uploads\/2024\/12\/v2-5bcf89ef672ed43e14a198340237674f_1440w.jpg\" alt=\"\" class=\"wp-image-11150\" srcset=\"http:\/\/yptk.cn\/wp-content\/uploads\/2024\/12\/v2-5bcf89ef672ed43e14a198340237674f_1440w.jpg 640w, http:\/\/yptk.cn\/wp-content\/uploads\/2024\/12\/v2-5bcf89ef672ed43e14a198340237674f_1440w-300x247.jpg 300w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u5982\uff0c\u67d0\u4e2a\u8033\u673a\u7684\u9891\u54cd\u66f2\u7ebf\u53ef\u80fd\u5728\u9ad8\u9891\u6bb5\u4e0a\u5347\uff0c\u8868\u793a\u5b83\u5728\u9ad8\u97f3\u533a\u57df\u76f8\u5bf9\u589e\u5f3a\uff1b\u5728\u4e2d\u9891\u6bb5\u4fdd\u6301\u5e73\u5766\uff0c\u8868\u793a\u4e2d\u97f3\u7684\u8868\u73b0\u51c6\u786e\uff1b\u5728\u4f4e\u9891\u6bb5\u4e0b\u964d\uff0c\u8868\u793a\u4f4e\u97f3\u76f8\u5bf9\u8870\u51cf<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0d\u540c\u58f0\u97f3\u7684\u9891\u7387\u8303\u56f4<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"669\" src=\"http:\/\/yptk.cn\/wp-content\/uploads\/2024\/12\/u22547430292265767949fm27gp0-1.jpg\" alt=\"\" class=\"wp-image-11145\" srcset=\"http:\/\/yptk.cn\/wp-content\/uploads\/2024\/12\/u22547430292265767949fm27gp0-1.jpg 500w, http:\/\/yptk.cn\/wp-content\/uploads\/2024\/12\/u22547430292265767949fm27gp0-1-224x300.jpg 224w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">2\u3001Equal Loudness Contours\uff08\u7b49\u54cd\u66f2\u7ebf\uff09\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1933\u5e74\u65f6\uff0c\u7f8e\u56fd\u4e24\u4f4d\u5728\u8d1d\u5c14\u5b9e\u9a8c\u4ece\u4e8b\u7814\u7a76\u7684\u79d1\u5b66\u5bb6Harvey Fletcher\u4e0eWilden Munson\u5728Journal of the Acoustic Society of America\u5bf9\u4eba\u8033\u542c\u89c9\u53d1\u8868\u4e00\u7bc7\u6587\u7ae0\u201dLoudness,its definition, measurement and calculation\u201d\u3002\u4ed6\u4eec\u7814\u7a76\u53d1\u73b0\u4eba\u8033\u5bf9\u6240\u6709\u9891\u7387\u7684\u54cd\u5ea6\u8ba4\u77e5\u5e76\u4e0d\u662f\u76f8\u540c\u7684\uff0c\u4eba\u8033\u5bf9\u4e0d\u540c\u9891\u7387\u7684\u53cd\u5e94\u4f1a\u968f\u7740\u97f3\u91cf\u800c\u6539\u53d8\u3002<br><br>\u5728\u4f4e\u97f3\u91cf\u4e0b\uff0c\u4eba\u8033\u5bf9\u9ad8\u9891\u548c\u4f4e\u9891\u7684\u654f\u611f\u6027\u90fd\u4f1a\u663e\u8457\u964d\u4f4e\uff0c\u800c\u968f\u7740\u97f3\u91cf\u589e\u5927\uff0c\u8fd9\u79cd\u5dee\u5f02\u5c06\u53d8\u5c0f\u3002\u66f4\u51c6\u786e\u7684\u8bf4\uff0c\u57281kHz\u4ee5\u4e0b\u65f6\uff0c\u9891\u7387\u8d8a\u4f4e\uff0c\u6211\u4eec\u5c31\u9700\u8981\u66f4\u5927\u7684\u54cd\u5ea6\u624d\u80fd\u83b7\u5f97\u4e0e\u5176\u4ed6\u9891\u7387\u4e00\u81f4\u7684\u542c\u611f\u3002\u800c\u8d85\u8fc76kHz\uff0c\u4eba\u8033\u7684\u654f\u611f\u5ea6\u5c31\u4f1a\u51fa\u73b0\u660e\u663e\u7684\u4e0b\u964d\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5176\u6b21\uff0c\u5219\u662f\u4eba\u8033\u7ed3\u6784\u5bf9\u4e8e\u97f3\u9891\u7684\u81ea\u7136\u8870\u51cf\u3002\u7531\u4e8e\u4eba\u7c7b\u7684\u8033\u6735\u7ed3\u6784\uff0c\u58f0\u97f3\u4ece\u8033\u6735\u8fdb\u5165\u8033\u9053\u6700\u7ec8\u5230\u8fbe\u8033\u819c\uff0c\u8fd9\u4e2a\u8fc7\u7a0b\u4e2d\u58f0\u97f3\u5c31\u5df2\u7ecf\u5f00\u59cb\u4ea7\u751f\u4e86\u5931\u771f\u3002\u800c\u66f4\u4e3a\u4e25\u91cd\u7684\u95ee\u9898\u53ef\u80fd\u662f\u4eba\u7c7b\u8fdb\u5316\u7684\u8fc7\u7a0b\u4e2d\u6240\u5f62\u6210\u7684\u751f\u7406\u9002\u5e94\u529b\u3002\u6bd4\u5982\u4eba\u8033\u5bf9\u4e8e3kHz\u7684\u58f0\u97f3\u7279\u522b\u654f\u611f\uff0c\u8fd9\u4e3b\u8981\u662f\u7531\u4e8e\u5a74\u5b69\u557c\u54ed\u7684\u54ed\u58f0\u6070\u597d\u5c31\u843d\u5728\u8fd9\u4e00\u6bb5\u9891\u7387\u4e0a\uff0c\u5bfc\u81f4\u5728\u6f2b\u957f\u7684\u8fdb\u5316\u5c81\u6708\u4e2d\uff0c\u4eba\u7c7b\u5bf9\u4e8e\u8fd9\u4e2a\u9891\u6bb5\u7684\u654f\u611f\u7a0b\u5ea6\u53d8\u5f97\u8d8a\u6765\u8d8a\u9ad8\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"727\" height=\"553\" src=\"http:\/\/yptk.cn\/wp-content\/uploads\/2024\/12\/3358_1631799073_thumb.png\" alt=\"\" class=\"wp-image-11153\" srcset=\"http:\/\/yptk.cn\/wp-content\/uploads\/2024\/12\/3358_1631799073_thumb.png 727w, http:\/\/yptk.cn\/wp-content\/uploads\/2024\/12\/3358_1631799073_thumb-300x228.png 300w\" sizes=\"auto, (max-width: 727px) 100vw, 727px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">X\u8f74\u8868\u793a\u7684\u662f\u9891\u7387\uff0cY\u8f74\u8868\u793a\u7684\u4e0d\u540c\u7684\u632f\u5e45\u91cf\u3002\u201cPhon\u201d\uff08\u65b9\uff09\u662f\u4e00\u4e2a\u54cd\u5ea6\u5355\u4f4d\uff0c\u88ab\u611f\u77e5\u4e3a\u7b49\u4e8e1000Hz\u8c03\u7684\u5206\u8d1d\u5f3a\u5ea6\u3002\u6240\u4ee5\u53ef\u7406\u89e3\u4e3a\u4e00\u4e2a1000Hz\u7684\u6b63\u5f26\u6ce2\u572840dBSPL\u4e0b\u64ad\u653e\u7684\u54cd\u5ea6\u76f8\u5f53\u4e8e40Phon\u3002\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u628a\u201cPhon\u201d\u7684\u76f8\u5bf9\u53d8\u5316\u4e0e\u201cdBSPL\u201d\u5728\u54cd\u5ea6\u65b9\u9762\u7684\u76f8\u5bf9\u53d8\u5316\u7b49\u540c\u8d77\u6765\u3002<\/p>\n\n\n\n<p 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class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"605\" height=\"427\" src=\"http:\/\/yptk.cn\/wp-content\/uploads\/2024\/12\/image-2.png\" alt=\"\" class=\"wp-image-11148\" srcset=\"http:\/\/yptk.cn\/wp-content\/uploads\/2024\/12\/image-2.png 605w, http:\/\/yptk.cn\/wp-content\/uploads\/2024\/12\/image-2-300x212.png 300w\" sizes=\"auto, (max-width: 605px) 100vw, 605px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u79cd\u79cd\u539f\u56e0\u4e0b\uff0c\u5355\u7eaf\u53c2\u8003\u9891\u54cd\u66f2\u7ebf\uff0c\u662f\u65e0\u6cd5\u201c\u5224\u65ad\u5668\u6750\u597d\u574f\u201d\u7684\u3002\u5373\u4f7f\u6211\u4eec\u7ecf\u5e38\u542c\u5230\uff0c\u4e00\u4e2a\u597d\u7684HIFI\u8bbe\u5907\u8ffd\u6c42\u7684\u662f\u9891\u54cd\u66f2\u7ebf\u7684\u5e73\u76f4\uff0c\u4e0d\u8981\u6709\u5cf0\u6216\u8c37\u5c31\u662f\u597d\u7684\u66f2\u7ebf\uff0c\u4f46\u5373\u4f7f\u662f\u4e00\u4e2a\u5b8c\u5168\u5e73\u76f4\u9891\u54cd\u7684\u58f0\u97f3\uff0c\u88ab\u4eba\u8033\u63a5\u6536\u540e\uff0c\u4e5f\u4f1a\u81ea\u7136\u7684\u53d8\u5f97\u4e0d\u5e73\u76f4\u3002\u90a3\u9762\u5bf9\u8fd9\u8fd9\u6837\u7684\u60c5\u51b5\uff0cHIFI\u5382\u5546\u662f\u5982\u4f55\u5904\u7406\u8fd9\u4e2a\u95ee\u9898\u7684\u5462\uff1f<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">3\u3001\u54c8\u66fc\u66f2\u7ebf\uff08Harman Target Curve\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u54c8\u66fc\u66f2\u7ebf\u662f\u54c8\u66fc\u5361\u987f\u97f3\u9891\u5de5\u7a0b\u5e08\u6839\u636e\u542c\u97f3\u73af\u5883\u3001\u4eba\u8033\u7ed3\u6784\u3001\u4ee5\u53ca\u56de\u653e\u8bbe\u5907\u7b49\u7efc\u5408\u56e0\u7d20\u5f97\u51fa\u7684\u4e00\u6761\u6807\u51c6\u201c\u8c03\u97f3\u201d\u66f2\u7ebf\uff0c\u4ed6\u7684\u76ee\u7684\u662f\u4e3a\u4e86\u8ba9\u4eba\u8033\u6700\u7ec8\u542c\u5230\u7684\u58f0\u97f3\u9891\u54cd\u8d8b\u5411\u4e8e\u5e73\u76f4\uff0c\u4e5f\u5c31\u662f\u201c\u542c\u611f\u5e73\u76f4\u201d\u3002\u56e0\u6b64\uff0c\u54c8\u66fc\u66f2\u7ebf\u662f\u54c8\u66fc\u5361\u987f\u5728\u5236\u4f5c\u56de\u653e\u8bbe\u5907\u65f6\u7684\u53c2\u8003\u6807\u51c6\uff0c\u4ee3\u8868\u4e86\u4ed6\u6f5c\u5728\u7684\u58f0\u97f3\u98ce\u683c\u5373\u98ce\u683c\u53d6\u5411\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"844\" height=\"614\" src=\"http:\/\/yptk.cn\/wp-content\/uploads\/2024\/12\/zuQUMZfeoPEQFTwU.webp\" alt=\"\" class=\"wp-image-11162\" srcset=\"http:\/\/yptk.cn\/wp-content\/uploads\/2024\/12\/zuQUMZfeoPEQFTwU.webp 844w, http:\/\/yptk.cn\/wp-content\/uploads\/2024\/12\/zuQUMZfeoPEQFTwU-300x218.webp 300w, http:\/\/yptk.cn\/wp-content\/uploads\/2024\/12\/zuQUMZfeoPEQFTwU-768x559.webp 768w\" sizes=\"auto, (max-width: 844px) 100vw, 844px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e8c\u3001\u5176\u4ed6\u5f71\u54cd\u56e0\u7d20<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u52a8\u6001\u8303\u56f4\uff1a\u52a8\u6001\u8303\u56f4\u7684\u5b9a\u4e49\u662f\u6700\u5927\u58f0\u538b\u7ea7\u4e0e\u6700\u5c0f\u58f0\u538b\u7ea7\u4e4b\u95f4\u7684\u6bd4\u503c\u3002\u662f\u4e00\u4e2a\u76f8\u5bf9\u503c\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u603b\u8c10\u6ce2\u5931\u771f\uff08+\u566a\u58f0\uff09\uff1a\u603b\u8c10\u6ce2\u5931\u771f\u662f\u4e00\u79cd\u975e\u7ebf\u6027\u5931\u771f\uff0c\u5b83\u4f1a\u5728\u8f93\u5165\u4e00\u4e2a\u5355\u9891\u4fe1\u53f7\u65f6\uff0c\u5728\u8f93\u51fa\u4e2d\u4ea7\u751f\u8fd9\u4e2a\u4fe1\u53f7\u9891\u7387\u7684\u6574\u6570\u500d\u7684\u4fe1\u53f7\u3002\u8fd9\u4e9b\u989d\u5916\u4ea7\u751f\u7684\u4fe1\u53f7\u88ab\u79f0\u4e3a\u8c10\u6ce2\u3002\u6362\u53e5\u8bdd\u8bf4\uff0c\u5f53\u4f60\u8f93\u5165\u4e00\u4e2a\u7279\u5b9a\u9891\u7387\u7684\u4fe1\u53f7\u65f6\uff0c\u8f93\u51fa\u4e2d\u4f1a\u51fa\u73b0\u8be5\u9891\u7387\u7684\u500d\u9891\u4fe1\u53f7\u3002\u4f8b\u5982\uff0c\u5982\u679c\u8f93\u5165\u4e00\u4e2a100 Hz\u7684\u4fe1\u53f7\uff0c\u8f93\u51fa\u4e2d\u53ef\u80fd\u4f1a\u51fa\u73b0100 Hz\u7684\u500d\u9891\uff08200 Hz\uff09\u3001\u4e09\u500d\u9891\uff08300 Hz\uff09\u3001\u56db\u500d\u9891\uff08400 Hz\uff09\u7b49\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e92\u8c03\u5931\u771f\uff08+\u566a\u58f0\uff09\uff1a\u4e92\u8c03\u5931\u771f\u4e5f\u662f\u975e\u7ebf\u6027\u5931\u771f\u7684\u4e00\u79cd\uff0c\u5b83\u4e0e\u603b\u8c10\u6ce2\u5931\u771f\u7684\u533a\u522b\u5728\u4e8e\u8f93\u5165\u4fe1\u53f7\u7531\u4e00\u4e2a\u5355\u9891\u4fe1\u53f7\u53d8\u4e3a\u4e24\u4e2a\u5355\u9891\u4fe1\u53f7\u3002\u5f53\u8fd9\u4e24\u4e2a\u9891\u7387\u4e0d\u540c\u7684\u4fe1\u53f7\u7ecf\u8fc7\u975e\u7ebf\u6027\u7684\u97f3\u9891\u8bbe\u5907\u65f6\uff0c\u8f93\u51fa\u4e2d\u9664\u4e86\u4f1a\u6709\u8fd9\u4e24\u4e2a\u9891\u7387\u7684\u4fe1\u53f7\u4e4b\u5916\uff0c\u8fd8\u4f1a\u6709\u8fd9\u4e24\u4e2a\u4fe1\u53f7\u9891\u7387\u7684\u5dee\u4e0e\u548c\u7684\u6210\u5206\u3002\u8fd9\u4e9b\u989d\u5916\u4ea7\u751f\u7684\u9891\u7387\u6210\u5206\u88ab\u79f0\u4e3a\u4e92\u8c03\u4ea7\u7269\u3002\u4f8b\u5982\uff0c\u5982\u679c\u8f93\u5165\u4e00\u4e2a100 Hz\u548c200 Hz\u7684\u4fe1\u53f7\uff0c\u8f93\u51fa\u4e2d\u53ef\u80fd\u4f1a\u51fa\u73b0100 Hz\u548c200 Hz\u7684\u5404\u81ea\u7684\u4fe1\u53f7\uff0c\u4ee5\u53ca100 Hz\u548c200 Hz\u4e4b\u5dee\uff08100 Hz\uff09\u548c\u548c\uff08300 Hz\uff09\u7684\u4fe1\u53f7\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u58f0\u9053\uff1a\u7acb\u4f53\u58f0stereo\uff1a\u4e00\u822c\u5728\u624b\u673a\u5382\u5546\u8bed\u5883\u4e0b\uff0c\u90fd\u662f\u6307\u7684\u53cc\u58f0\u9053\u97f3\u9891\u3002\u5f53\u7136\u8fd9\u4e5f\u53ea\u662f\u53cc\u58f0\u90532-channel\u7684\u4e00\u79cd\uff0c\u53cc\u58f0\u9053\u8fd8\u5305\u62ecdouble mono\uff0c\u76f4\u8bd1\u8fc7\u6765\u5c31\u662f\u53cc-\u5355\u58f0\u9053\u3002\u5373\u4e24\u4e2a\u58f0\u9053\u64ad\u653e\u5b8c\u5168\u76f8\u540c\u7684\u58f0\u97f3\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u58f0\u573a\uff1a\u58f0\u573a\u662f\u6307\u58f0\u97f3\u7684\u4f20\u64ad\u548c\u7a7a\u95f4\u5206\u5e03\u7279\u6027\u3002\u5728\u58f0\u5b66\u9886\u57df\uff0c\u5e38\u89c1\u7684\u58f0\u573a\u7c7b\u522b\u5305\u62ec\u4ee5\u4e0b\u51e0\u79cd\uff1a<br>\u81ea\u7531\u573a\uff08Free Field\uff09\uff1a\u81ea\u7531\u573a\u662f\u6307\u58f0\u97f3\u5728\u6ca1\u6709\u4efb\u4f55\u53cd\u5c04\u548c\u5e72\u6270\u7684\u60c5\u51b5\u4e0b\u4f20\u64ad\u7684\u73af\u5883\u3002\u5728\u81ea\u7531\u573a\u4e2d\uff0c\u58f0\u97f3\u53ef\u4ee5\u81ea\u7531\u4f20\u64ad\uff0c\u6ca1\u6709\u4efb\u4f55\u9650\u5236\u6216\u53cd\u5c04\u3002 \u53cd\u5c04\u573a\uff08Reverberant Field\uff09\uff1a\u53cd\u5c04\u573a\u662f\u6307\u58f0\u97f3\u5728\u5b58\u5728\u53cd\u5c04\u548c\u591a\u6b21\u53cd\u5c04\u7684\u73af\u5883\u4e2d\u4f20\u64ad\u7684\u60c5\u51b5\u3002\u5728\u53cd\u5c04\u573a\u4e2d\uff0c\u58f0\u97f3\u4f1a\u5728\u5404\u4e2a\u65b9\u5411\u4e0a\u53cd\u5c04\u3001\u6298\u5c04\u548c\u6563\u5c04\uff0c\u5bfc\u81f4\u58f0\u97f3\u7684\u5ef6\u8fdf\u3001\u6df7\u54cd\u548c\u58f0\u97f3\u80fd\u91cf\u7684\u5206\u6563\u3002 \u5ba4\u5185\u573a\uff08Indoor Field\uff09\uff1a\u5ba4\u5185\u573a\u662f\u6307\u58f0\u97f3\u5728\u5c01\u95ed\u7684\u5ba4\u5185\u73af\u5883\u4e2d\u4f20\u64ad\u7684\u60c5\u51b5\u3002\u5ba4\u5185\u573a\u4e2d\u7684\u58f0\u97f3\u53d7\u5230\u5899\u58c1\u3001\u5929\u82b1\u677f\u3001\u5730\u677f\u7b49\u7269\u4f53\u7684\u53cd\u5c04\u548c\u5438\u6536\u5f71\u54cd\uff0c\u5bfc\u81f4\u58f0\u97f3\u7684\u8870\u51cf\u3001\u6df7\u54cd\u548c\u7a7a\u95f4\u6548\u679c\u7684\u6539\u53d8\u3002 \u6237\u5916\u573a\uff08Outdoor Field\uff09\uff1a\u6237\u5916\u573a\u662f\u6307\u58f0\u97f3\u5728\u5f00\u653e\u7684\u6237\u5916\u73af\u5883\u4e2d\u4f20\u64ad\u7684\u60c5\u51b5\u3002\u5728\u6237\u5916\u573a\u4e2d\uff0c\u58f0\u97f3\u53d7\u5230\u5927\u6c14\u6761\u4ef6\u3001\u5730\u5f62\u3001\u5efa\u7b51\u7269\u7b49\u56e0\u7d20\u7684\u5f71\u54cd\uff0c\u53ef\u80fd\u4f1a\u53d1\u751f\u8870\u51cf\u3001\u6269\u6563\u548c\u4f20\u64ad\u8def\u5f84\u7684\u53d8\u5316\u3002 \u8fd1\u573a\uff08Near Field\uff09\uff1a\u8fd1\u573a\u662f\u6307\u58f0\u6e90\u4e0e\u63a5\u6536\u70b9\u4e4b\u95f4\u7684\u8ddd\u79bb\u76f8\u5bf9\u8f83\u8fd1\u7684\u533a\u57df\u3002\u5728\u8fd1\u573a\u4e2d\uff0c\u58f0\u97f3\u7684\u7279\u6027\u53ef\u80fd\u4e0e\u8fdc\u79bb\u58f0\u6e90\u7684\u8fdc\u573a\u6709\u6240\u4e0d\u540c\uff0c\u5305\u62ec\u58f0\u538b\u7ea7\u3001\u9891\u7387\u54cd\u5e94\u548c\u58f0\u573a\u5747\u5300\u6027\u7b49\u65b9\u9762\u7684\u5dee\u5f02\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u53c2\u8003\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"\"><\/a><a href=\"https:\/\/zhuanlan.zhihu.com\/p\/639479386\">https:\/\/zhuanlan.zhihu.com\/p\/639479386<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/www.rainlain.com\/index.php\/2021\/03\/13\/927\/\">https:\/\/www.rainlain.com\/index.php\/2021\/03\/13\/927\/<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u97f3\u9891\u76843A\u7b97\u6cd5<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">AEC\uff1aAcoustic Echo Cancellation \u56de\u58f0\u6d88\u9664<br>AGC\uff1aAutomatic Gain Control \u81ea\u52a8\u589e\u76ca\u63a7\u5236<br>ANS\uff1aAdaptive Noise Suppression \u566a\u58f0\u6291\u5236<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u97f3\u9891\u5e38\u8bc6 \u58f0\u97f3\u662f\u6307\u58f0\u6ce2\u4f5c\u7528\u4e8e\u542c\u89c9\u5668\u5b98\u6240\u5f15\u8d77\u7684\u4e00\u79cd\u4e3b\u89c2\u611f\u89c9\u3002\u4eba\u8033\u53ef\u542c\u8303\u56f4\u662f20Hz~20KHz\u3002\uff08\u5c0f\u4e8e20Hz\u4e3a\u6b21\u58f0\u6ce2\uff0c\u5927\u4e8e20KHz\u4e3a\u8d85\u58f0\u6ce2\u3002\uff09\u8bed\u97f3\u8303\u56f4300~3400Hz \u97f3\u9891\u57fa\u7840 \u58f0\u5b66\u4e0a\u53ef\u7528\u54cd\u5ea6\uff08\u97f3\u5f3a\uff09\u3001\u97f3\u8c03\u3001\u97f3\u8272\u548c\u97f3\u957f\u7b49\u6765\u63cf\u8ff0 \u7269\u7406\u5b66\u4e0a\uff0c\u58f0\u97f3\u662f\u4e00\u79cd\u673a\u68b0\u6ce2\uff0c\u662f\u673a\u68b0\u632f\u52a8\u5728\u5f39\u6027\u4ecb\u8d28\u4e2d\u7684\u4f20\u64ad\u3002\u58f0\u6ce2\u662f\u4e00\u79cd\u7eb5\u6ce2\uff0c\u9707\u52a8\u65b9\u5411\u548c\u4f20\u64ad\u65b9\u5411\u5e73\u884c\u3002Sound waves are Longitudinal waves [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":11118,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_crdt_document":"","footnotes":""},"categories":[171],"tags":[479],"class_list":["post-11100","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-hardware","tag-479"],"_links":{"self":[{"href":"http:\/\/yptk.cn\/index.php\/wp-json\/wp\/v2\/posts\/11100","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/yptk.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/yptk.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/yptk.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/yptk.cn\/index.php\/wp-json\/wp\/v2\/comments?post=11100"}],"version-history":[{"count":0,"href":"http:\/\/yptk.cn\/index.php\/wp-json\/wp\/v2\/posts\/11100\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/yptk.cn\/index.php\/wp-json\/wp\/v2\/media\/11118"}],"wp:attachment":[{"href":"http:\/\/yptk.cn\/index.php\/wp-json\/wp\/v2\/media?parent=11100"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/yptk.cn\/index.php\/wp-json\/wp\/v2\/categories?post=11100"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/yptk.cn\/index.php\/wp-json\/wp\/v2\/tags?post=11100"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}