{"id":205,"date":"2022-03-20T18:35:44","date_gmt":"2022-03-20T10:35:44","guid":{"rendered":"https:\/\/www.inast.xyz\/?p=205"},"modified":"2022-10-09T21:57:55","modified_gmt":"2022-10-09T13:57:55","slug":"%e6%a8%a1%e6%8b%9f%e9%9f%b3%e9%a2%91%e4%bf%a1%e5%8f%b7%e6%95%b0%e5%ad%97%e5%8c%96%e6%8a%80%e6%9c%af","status":"publish","type":"post","link":"https:\/\/www.itvst.com\/index.php\/2022\/03\/20\/%e6%a8%a1%e6%8b%9f%e9%9f%b3%e9%a2%91%e4%bf%a1%e5%8f%b7%e6%95%b0%e5%ad%97%e5%8c%96%e6%8a%80%e6%9c%af\/","title":{"rendered":"\u6a21\u62df\u97f3\u9891\u4fe1\u53f7\u6570\u5b57\u5316\u6280\u672f"},"content":{"rendered":"\n

\u58f0\u5361\u91c7\u6837\u4f4d\u6570\u3001\u91c7\u6837\u9891\u7387\uff1a
\u6587\u7ae0\u6458\u8981\uff1a\u91c7\u6837\u4f4d\u6570\u4e0e\u91c7\u6837\u9891\u7387 \u97f3\u9891\u4fe1\u53f7\u662f\u8fde\u7eed\u7684\u6a21\u62df\u4fe1\u53f7\uff0c\u800c\u7535\u8111\u5904\u7406\u7684\u5374\u53ea\u80fd\u662f\u6570\u5b57\u4fe1\u53f7\u3002\u56e0\u6b64\uff0c\u7535\u8111\u8981\u5bf9\u97f3\u9891\u4fe1\u53f7\u8fdb\u884c\u5904\u7406\uff0c\u9996\u5148\u5fc5\u987b\u8fdb\u884c\u6a21\/\u6570\uff08A\/D\uff09\u7684\u8f6c\u6362\u3002\u8fd9\u4e2a\u8f6c\u6362\u8fc7\u7a0b\u5b9e\u9645\u4e0a<\/p>\n\n\n\n

\u91c7\u6837\u4f4d\u6570\u4e0e\u91c7\u6837\u9891\u7387
\u97f3\u9891\u4fe1\u53f7\u662f\u8fde\u7eed\u7684\u6a21\u62df\u4fe1\u53f7\uff0c\u800c\u7535\u8111\u5904\u7406\u7684\u5374\u53ea\u80fd\u662f\u6570\u5b57\u4fe1\u53f7\u3002\u56e0\u6b64\uff0c\u7535\u8111\u8981\u5bf9\u97f3\u9891\u4fe1\u53f7\u8fdb\u884c\u5904\u7406\uff0c\u9996\u5148\u5fc5\u987b\u8fdb\u884c\u6a21\/\u6570\uff08A\/D\uff09\u7684\u8f6c\u6362\u3002\u8fd9\u4e2a\u8f6c\u6362\u8fc7\u7a0b\u5b9e\u9645\u4e0a\u5c31\u662f\u5bf9\u97f3\u9891\u4fe1\u53f7\u7684\u91c7\u6837\u548c\u91cf\u5316\u8fc7\u7a0b\uff0c\u5373\u628a\u65f6\u95f4\u4e0a\u8fde\u7eed\u7684\u6a21\u62df\u4fe1\u53f7\u8f6c\u53d8\u4e3a\u65f6\u95f4\u4e0a\u4e0d\u8fde\u7eed\u7684\u6570\u5b57\u4fe1\u53f7\uff0c\u53ea\u8981\u5728\u8fde\u7eed\u91cf\u4e0a\u7b49\u95f4\u9694\u7684\u53d6\u8db3\u591f\u591a\u7684\u70b9\uff0c\u5c31\u80fd\u903c\u771f\u5730\u6a21\u62df\u51fa\u539f\u6765\u7684\u8fde\u7eed\u91cf\u3002\u8fd9\u4e2a\u201c\u53d6\u70b9\u201d\u7684\u8fc7\u7a0b\u6211\u4eec\u79f0\u4e3a\u91c7\u6837\uff08sampling\uff09\uff0c\u91c7\u6837\u7cbe\u5ea6\u8d8a\u9ad8\uff08\u201c\u53d6\u70b9\u201d\u8d8a\u591a\uff09\u6570\u5b57\u58f0\u97f3\u8d8a\u903c\u771f\u3002\u5176\u4e2d\u4fe1\u53f7\u5e45\u5ea6\uff08\u7535\u538b\u503c\uff09\u65b9\u5411\u91c7\u6837\u7cbe\u5ea6\uff0c\u6211\u4eec\u79f0\u4e4b\u4e3a\u91c7\u6837\u4f4d\u6570\uff08sampling resolution\uff09\uff0c\u65f6\u95f4\u65b9\u5411\u7684\u91c7\u6837\u7cbe\u5ea6\u79f0\u4e3a\u91c7\u6837\u9891\u7387\uff08sampling frequency\uff09\u3002<\/p>\n\n\n\n

\u91c7\u6837\u4f4d\u6570\u6307\u7684\u662f\u6bcf\u4e2a\u91c7\u6837\u70b9\u6240\u4ee3\u8868\u97f3\u9891\u4fe1\u53f7\u7684\u5e45\u5ea6\u30028bit\u7684\u4f4d\u6570\u53ef\u4ee5\u63cf\u8ff0256\u79cd\u72b6\u6001\uff0c\u800c16bit\u5219\u53ef\u4ee5\u8868\u793a65536\u79cd\u72b6\u6001\u3002\u5bf9\u4e8e\u540c\u4e00\u4fe1\u53f7\u5e45\u5ea6\u800c\u8a00\uff0c\u4f7f\u752816bit\u7684\u91cf\u5316\u7ea7\u6765\u63cf\u8ff0\u81ea\u7136\u8981\u6bd4\u4f7f\u75288bit\u6765\u63cf\u8ff0\u7cbe\u7ec6\u5f97\u591a\u3002\u5176\u60c5\u5f62\u5c31\u5c24\u5982\u4f7f\u7528\u6beb\u7c73\u4e3a\u5355\u4f4d\u8fdb\u884c\u5ea6\u91cf\u8981\u6bd4\u4f7f\u7528\u5398\u7c73\u4e3a\u5355\u4f4d\u8981\u7cbe\u7ec6\u4e00\u6837\u3002\u4e00\u822c\u6765\u8bf4\u91c7\u6837\u4f4d\u6570\u8d8a\u9ad8\uff0c\u58f0\u97f3\u5c31\u8d8a\u6e05\u6790\u3002 \u91c7\u6837\u9891\u7387\u662f\u6307\u6bcf\u79d2\u949f\u5bf9\u97f3\u9891\u4fe1\u53f7\u7684\u91c7\u6837\u6b21\u6570\u3002\u5355\u4f4d\u65f6\u95f4\u5185\u91c7\u6837\u6b21\u6570\u8d8a\u591a\uff0c\u5373\u91c7\u6837\u9891\u7387\u8d8a\u9ad8\uff0c\u6570\u5b57\u4fe1\u53f7\u5c31\u8d8a\u63a5\u8fd1\u539f\u58f0\u3002\u91c7\u6837\u9891\u7387\u53ea\u8981\u8fbe\u5230\u4fe1\u53f7\u6700\u9ad8\u9891\u7387\u7684\u4e24\u500d\uff0c\u5c31\u80fd\u7cbe\u7ec6\u63cf\u8ff0\u88ab\u91c7\u6837\u7684\u4fe1\u53f7\u3002\u4e00\u822c\u6765\u8bf4\uff0c\u4eba\u8033\u7684\u542c\u529b\u8303\u56f4\u572820hz\u523020Khz\u4e4b\u95f4\uff0c\u56e0\u6b64\uff0c\u53ea\u8981\u91c7\u6837\u9891\u7387\u8fbe\u523020Khz\u00d72=40Khz\u65f6\uff0c\u5c31\u53ef\u4ee5\u6ee1\u8db3\u4eba\u4eec\u7684\u8981\u6c42\u3002\u73b0\u65f6\u5927\u591a\u6570\u58f0\u5361\u7684\u91c7\u6837\u9891\u7387\u90fd\u5df2\u8fbe\u523044.1\u621648Khz\uff0c\u5373\u8fbe\u5230\u6240\u8c13\u7684CD\u97f3\u8d28\u6c34\u5e73\u4e86\u3002<\/p>\n\n\n\n

\u91c7\u6837\u7684\u4f4d\u6570\u7f16\u8f91
\u91c7\u6837\u4f4d\u6570\u53ef\u4ee5\u7406\u89e3\u4e3a\u91c7\u96c6\u5361\u5904\u7406\u58f0\u97f3\u7684\u89e3\u6790\u5ea6\u3002\u8fd9\u4e2a\u6570\u503c\u8d8a\u5927\uff0c\u89e3\u6790\u5ea6\u5c31\u8d8a\u9ad8\uff0c\u5f55\u5236\u548c\u56de\u653e\u7684\u58f0\u97f3\u5c31\u8d8a\u771f\u5b9e\u3002\u6211\u4eec\u9996\u5148\u8981\u77e5\u9053\uff1a\u7535\u8111\u4e2d\u7684\u58f0\u97f3\u6587\u4ef6\u662f\u7528\u6570\u5b570\u548c1\u6765\u8868\u793a\u7684\u3002\u8fde\u7eed\u7684\u6a21\u62df\u4fe1\u53f7\u6309\u4e00\u5b9a\u7684\u91c7\u6837\u9891\u7387\u7ecf\u6570\u7801\u8109\u51b2\u53d6\u6837\u540e\uff0c\u6bcf\u4e00\u4e2a\u79bb\u6563\u7684\u8109\u51b2\u4fe1\u53f7\u88ab\u4ee5\u4e00\u5b9a\u7684\u91cf\u5316\u7cbe\u5ea6\u91cf\u5316\u6210\u4e00\u4e32\u4e8c\u8fdb\u5236\u7f16\u7801\u6d41\uff0c\u8fd9\u4e32\u7f16\u7801\u6d41\u7684\u4f4d\u6570\u5373\u4e3a\u91c7\u6837\u4f4d\u6570\uff0c\u4e5f\u79f0\u4e3a\u91cf\u5316\u7cbe\u5ea6\u3002\u4ece\u7801\u7387\u7684\u8ba1\u7b97\u516c\u5f0f\u4e2d\u53ef\u4ee5\u6e05\u695a\u7684\u770b\u51fa\u7801\u7387\u548c\u91c7\u6837\u4f4d\u6570\u7684\u5173\u7cfb\uff1a\u7801\u7387=\u53d6\u6837\u9891\u7387\u00d7\u91cf\u5316\u7cbe\u5ea6\u00d7\u58f0\u9053\u6570\u3002<\/p>\n\n\n\n

\u5728\u7535\u8111\u4e0a\u5f55\u97f3\u7684\u672c\u8d28\u5c31\u662f\u628a\u6a21\u62df\u58f0\u97f3\u4fe1\u53f7\u8f6c\u6362\u6210\u6570\u5b57\u4fe1\u53f7\u3002\u53cd\u4e4b\uff0c\u5728\u64ad\u653e\u65f6\u5219\u662f\u628a\u6570\u5b57\u4fe1\u53f7\u8fd8\u539f\u6210\u6a21\u62df\u58f0\u97f3\u4fe1\u53f7\u8f93\u51fa\u3002\u91c7\u96c6\u5361\u7684\u4f4d\u662f\u6307\u91c7\u96c6\u5361\u5728\u91c7\u96c6\u548c\u64ad\u653e\u58f0\u97f3\u6587\u4ef6\u65f6\u6240\u4f7f\u7528\u6570\u5b57\u58f0\u97f3\u4fe1\u53f7\u7684\u4e8c\u8fdb\u5236\u4f4d\u6570\u3002\u91c7\u96c6\u5361\u7684\u4f4d\u5ba2\u89c2\u5730\u53cd\u6620\u4e86\u6570\u5b57\u58f0\u97f3\u4fe1\u53f7\u5bf9\u8f93\u5165\u58f0\u97f3\u4fe1\u53f7\u63cf\u8ff0\u7684\u51c6\u786e\u7a0b\u5ea6\u30028\u4f4d\u4ee3\u88682\u76848\u6b21\u65b9–256\uff0c16\u4f4d\u5219\u4ee3\u88682\u768416\u6b21\u65b9–64K\u3002\u6bd4\u8f83\u4e00\u4e0b\uff0c\u4e00\u6bb5\u76f8\u540c\u7684\u97f3\u4e50\u4fe1\u606f\uff0c16\u4f4d\u58f0\u5361\u80fd\u628a\u5b83\u5206\u4e3a64K\u4e2a\u7cbe\u5ea6\u5355\u4f4d\u8fdb\u884c\u5904\u7406\uff0c\u800c8\u4f4d\u58f0\u5361\u53ea\u80fd\u5904\u7406256\u4e2a\u7cbe\u5ea6\u5355\u4f4d\u30028\u4f4d\u91c7\u6837\u7684\u5dee\u522b\u5728\u4e8e\u52a8\u6001\u8303\u56f4\u7684\u5bbd\u7a84\uff0c\u52a8\u6001\u8303\u56f4\u5bbd\u5e7f\uff0c\u97f3\u91cf\u8d77\u4f0f\u7684\u5927\u5c0f\u53d8\u5316\u5c31\u80fd\u591f\u66f4\u7cbe\u7ec6\u7684\u88ab\u8bb0\u5f55\u4e0b\u6765\uff0c\u5982\u6b64\u4e00\u6765\u4e0d\u8bba\u662f\u7ec6\u5fae\u7684\u58f0\u97f3\u6216\u662f\u5f3a\u70c8\u7684\u52a8\u611f\u9707\u64bc\uff0c\u90fd\u53ef\u4ee5\u8868\u73b0\u7684\u6dcb\u6f13\u5c3d\u81f4\uff0c\u800cCD\u97f3\u8d28\u7684\u91c7\u6837\u89c4\u683c\u6b63\u5f0f16\u4f4d\u91c7\u6837\u7684\u89c4\u683c\u3002
16\u4f4d\u4e8c\u8fdb\u5236\u6570\u7684\u6700\u5c0f\u503c\u662f0000000000000000\uff0c\u6700\u5927\u503c\u662f1111111111111111\uff0c\u5bf9\u5e94\u7684\u5341\u8fdb\u5236\u6570\u5c31\u662f0\u548c65535\uff0c\u4e5f\u5c31\u662f\u6700\u5927\u548c\u6700\u5c0f\u503c\u4e4b\u95f4\u7684\u5dee\u503c\u662f65535\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0c\u5b83\u91cf\u5316\u7684\u6a21\u62df\u91cf\u7684\u52a8\u6001\u8303\u56f4\u53ef\u4ee5\u5dee65535\uff0c\u4e5f\u5c31\u662f96.32\u5206\u8d1d\uff0c\u6240\u4ee5\uff0c\u91cf\u5316\u7cbe\u5ea6\u53ea\u548c\u52a8\u6001\u8303\u56f4\u6709\u5173\uff0c\u548c\u9891\u7387\u54cd\u5e94\u6ca1\u5173\u7cfb\u3002\u52a8\u6001\u8303\u56f4\u5b9a\u572896\u5206\u8d1d\u4e5f\u662f\u6709\u9053\u7406\u7684\uff0c\u4eba\u8033\u7684\u65e0\u75db\u82e6\u6781\u9650\u58f0\u538b\u662f90\u5206\u8d1d\uff0c96\u5206\u8d1d\u7684\u52a8\u6001\u8303\u56f4\u5728\u666e\u901a\u5e94\u7528\u4e2d\u8db3\u591f\u4f7f\u7528\uff0c\u6240\u4ee596\u5206\u8d1d\u52a8\u6001\u8303\u56f4\u5185\u7684\u6a21\u62df\u6ce2\uff0c\u7ecf\u91cf\u5316\u540e\uff0c\u4e0d\u4f1a\u4ea7\u751f\u524a\u6ce2\u5931\u771f\u7684\u3002
\u58f0\u97f3\u7684\u4f4d\u6570\u5c31\u76f8\u5f53\u4e8e\u753b\u9762\u7684\u989c\u8272\u6570\uff0c\u8868\u793a\u6bcf\u4e2a\u53d6\u6837\u7684\u6570\u636e\u91cf\uff0c\u5f53\u7136\u6570\u636e\u91cf\u8d8a\u5927\uff0c\u56de\u653e\u7684\u58f0\u97f3\u8d8a\u51c6\u786e\uff0c\u4e0d\u81f3\u4e8e\u628a\u5f00\u6c34\u58f6\u7684\u53eb\u58f0\u548c\u706b\u8f66\u7684\u9e23\u7b1b\u6df7\u6dc6\u3002\u540c\u6837\u7684\u9053\u7406\uff0c\u5bf9\u4e8e\u753b\u9762\u6765\u8bf4\u5c31\u662f\u66f4\u6e05\u6670\u548c\u51c6\u786e\uff0c\u4e0d\u81f3\u4e8e\u628a\u8840\u548c\u897f\u7ea2\u67ff\u9171\u6df7\u6dc6\u3002\u4e0d\u8fc7\u53d7\u4eba\u7684\u5668\u5b98\u7684\u673a\u80fd\u9650\u5236\uff0c16\u4f4d\u7684\u58f0\u97f3\u548c24\u4f4d\u7684\u753b\u9762\u57fa\u672c\u5df2\u7ecf\u662f\u666e\u901a\u4eba\u7c7b\u7684\u6781\u9650\u4e86\uff0c\u66f4\u9ad8\u4f4d\u6570\u5c31\u53ea\u80fd\u9760\u4eea\u5668\u624d\u80fd\u5206\u8fa8\u51fa\u6765\u4e86\u3002\u6bd4\u5982\u7535\u8bdd\u5c31\u662f3kHZ\u53d6\u6837\u76847\u4f4d\u58f0\u97f3\uff0c\u800cCD\u662f44.1kHZ\u53d6\u6837\u768416\u4f4d\u58f0\u97f3\uff0c\u6240\u4ee5CD\u5c31\u6bd4\u7535\u8bdd\u66f4\u6e05\u695a\u3002
\u5982\u4eca\u5e02\u9762\u4e0a\u6240\u6709\u7684\u4e3b\u6d41\u4ea7\u54c1\u90fd\u662f16\u4f4d\u7684\u91c7\u96c6\u5361\uff0c\u800c\u5e76\u975e\u6709\u4e9b\u65e0\u77e5\u5546\u5bb6\u6240\u9f13\u5439\u768464\u4f4d\u4e43\u81f3128\u4f4d\uff0c\u4ed6\u4eec\u5c06\u91c7\u96c6\u5361\u7684\u590d\u97f3\u6982\u5ff5\u4e0e\u91c7\u6837\u4f4d\u6570\u6982\u5ff5\u6df7\u6dc6\u5728\u4e86\u4e00\u8d77\u3002\u5982\u4eca\u529f\u80fd\u6700\u4e3a\u5f3a\u5927\u7684\u91c7\u96c6\u5361\u7cfb\u5217\u91c7\u7528\u7684EMU10K1\u82af\u7247\u867d\u7136\u53f7\u79f0\u53ef\u4ee5\u8fbe\u523032\u4f4d\uff0c\u4f46\u662f\u5b83\u53ea\u662f\u5efa\u7acb\u5728Direct Sound\u52a0\u901f\u57fa\u7840\u4e0a\u7684\u4e00\u79cd\u591a\u97f3\u9891\u6d41\u6280\u672f\uff0c\u5176\u672c\u8d28\u8fd8\u662f\u4e00\u575716\u4f4d\u7684\u58f0\u5361\u3002\u5e94\u8be5\u8bf416\u4f4d\u7684\u91c7\u6837\u7cbe\u5ea6\u5bf9\u4e8e\u7535\u8111\u591a\u5a92\u4f53\u97f3\u9891\u800c\u8a00\u5df2\u7ecf\u7ef0\u7ef0\u6709\u4f59\u4e86\u3002 \u5f88\u591a\u4eba\u90fd\u8bf4\uff0c\u5c31\u7b97\u4ece\u539f\u7248CD\u6293\u8f68\uff0c\u518d\u523b\u5f55\u6210CD\uff0c\u91cd\u653e\u7684\u97f3\u8d28\u4e5f\u662f\u4e0d\u4e00\u6837\u7684\uff0c\u8fd9\u4e2a\u4e5f\u662f\u6709\u9053\u7406\u7684\uff0c\u90a3\u4e48\uff0c\u65e2\u71360101\u8fd9\u6837\u7684\u4e8c\u8fdb\u6570\u662f\u5b8c\u5168\u514b\u9686\u7684\uff0c\u91cd\u653e\u600e\u4e48\u4f1a\u4e0d\u4e00\u6837\u5462\uff1f\u90a3\u662f\u56e0\u4e3a\uff0c\u65f6\u57fa\u95ee\u9898\u9020\u6210\u7684\u6570\u6a21\u4e92\u6362\u65f6\u7684\u5dee\u522b\uff0c\u5e76\u975e\u662f\u514b\u9686\u8fc7\u6765\u7684\u4e8c\u8fdb\u5236\u6570\u53d8\u4e86\uff0c\u4e8c\u8fdb\u5236\u6570\u4e00\u4e2a\u4e5f\u6ca1\u53d8\uff0c\u65f6\u57fa\u8bef\u5dee\u4e0d\u4e00\u6837\uff0c\u6570\u6a21\u8f6c\u6362\u540e\u7684\u6a21\u62df\u6ce2\u7684\u9891\u7387\u548c\u6e90\u76f8\u6bd4\u5c31\u4f1a\u6709\u4e0d\u4e00\u6837\u3002 [1]
\u91c7\u6837\u7684\u9891\u7387\u7f16\u8f91
\u91c7\u6837\u9891\u7387\u662f\u6307\u5f55\u97f3\u8bbe\u5907\u5728\u4e00\u79d2\u949f\u5185\u5bf9\u58f0\u97f3\u4fe1\u53f7\u7684\u91c7\u6837\u6b21\u6570\uff0c\u91c7\u6837\u9891\u7387\u8d8a\u9ad8\u58f0\u97f3\u7684\u8fd8\u539f\u5c31\u8d8a\u771f\u5b9e\u8d8a\u81ea\u7136\u3002\u5728\u5f53\u4eca\u7684\u4e3b\u6d41\u91c7\u96c6\u5361\u4e0a\uff0c\u91c7\u6837\u9891\u7387\u4e00\u822c\u5171\u5206\u4e3a22.05KHz\u300144.1KHz\u300148KHz\u4e09\u4e2a\u7b49\u7ea7\uff0c22.05 KHz\u53ea\u80fd\u8fbe\u5230FM\u5e7f\u64ad\u7684\u58f0\u97f3\u54c1\u8d28\uff0c44.1KHz\u5219\u662f\u7406\u8bba\u4e0a\u7684CD\u97f3\u8d28\u754c\u9650\uff0c48KHz\u5219\u66f4\u52a0\u7cbe\u786e\u4e00\u4e9b\u3002\u5bf9\u4e8e\u9ad8\u4e8e48KHz\u7684\u91c7\u6837\u9891\u7387\u4eba\u8033\u5df2\u65e0\u6cd5\u8fa8\u522b\u51fa\u6765\u4e86\uff0c\u6240\u4ee5\u5728\u7535\u8111\u4e0a\u6ca1\u6709\u591a\u5c11\u4f7f\u7528\u4ef7\u503c\u3002
5kHz\u7684\u91c7\u6837\u7387\u4ec5\u80fd\u8fbe\u5230\u4eba\u4eec\u8bb2\u8bdd\u7684\u58f0\u97f3\u8d28\u91cf\u3002
11kHz\u7684\u91c7\u6837\u7387\u662f\u64ad\u653e\u5c0f\u6bb5\u58f0\u97f3\u7684\u6700\u4f4e\u6807\u51c6\uff0c\u662fCD\u97f3\u8d28\u7684\u56db\u5206\u4e4b\u4e00\u3002
22kHz\u91c7\u6837\u7387\u7684\u58f0\u97f3\u53ef\u4ee5\u8fbe\u5230CD\u97f3\u8d28\u7684\u4e00\u534a\uff0c\u76ee\u524d\u5927\u591a\u6570\u7f51\u7ad9\u90fd\u9009\u7528\u8fd9\u6837\u7684\u91c7\u6837\u7387\u3002
44kHz\u7684\u91c7\u6837\u7387\u662f\u6807\u51c6\u7684CD\u97f3\u8d28\uff0c\u53ef\u4ee5\u8fbe\u5230\u5f88\u597d\u7684\u542c\u89c9\u6548\u679c\u3002
\u91c7\u6837\u7387\u7c7b\u4f3c\u4e8e\u52a8\u6001\u5f71\u50cf\u7684\u5e27\u6570\uff0c\u6bd4\u5982\u7535\u5f71\u7684\u91c7\u6837\u7387\u662f24\u8d6b\u5179\uff0cPAL\u5236\u5f0f\u7684\u91c7\u6837\u7387\u662f25\u8d6b\u5179\uff0cNTSC\u5236\u5f0f\u7684\u91c7\u6837\u7387\u662f30\u8d6b\u5179\u3002\u5f53\u6211\u4eec\u628a\u91c7\u6837\u5230\u7684\u4e00\u4e2a\u4e2a\u9759\u6b62\u753b\u9762\u518d\u4ee5\u91c7\u6837\u7387\u540c\u6837\u7684\u901f\u5ea6\u56de\u653e\u65f6\uff0c\u770b\u5230\u7684\u5c31\u662f\u8fde\u7eed\u7684\u753b\u9762\u3002\u540c\u6837\u7684\u9053\u7406\uff0c\u628a\u4ee544.1kHZ\u91c7\u6837\u7387\u8bb0\u5f55\u7684CD\u4ee5\u540c\u6837\u7684\u901f\u7387\u64ad\u653e\u65f6\uff0c\u5c31\u80fd\u542c\u5230\u8fde\u7eed\u7684\u58f0\u97f3\u3002\u663e\u7136\uff0c\u8fd9\u4e2a\u91c7\u6837\u7387\u8d8a\u9ad8\uff0c\u542c\u5230\u7684\u58f0\u97f3\u548c\u770b\u5230\u7684\u56fe\u50cf\u5c31\u8d8a\u8fde\u8d2f\u3002\u5f53\u7136\uff0c\u4eba\u7684\u542c\u89c9\u548c\u89c6\u89c9\u5668\u5b98\u80fd\u5206\u8fa8\u7684\u91c7\u6837\u7387\u662f\u6709\u9650\u7684\u3002\u5bf9\u540c\u4e00\u6bb5\u58f0\u97f3\uff0c\u752820kHz\u548c44.1kHz\u6765\u91c7\u6837\uff0c\u91cd\u653e\u65f6\uff0c\u53ef\u80fd\u53ef\u4ee5\u542c\u51fa\u5176\u4e2d\u7684\u5dee\u522b\uff0c\u800c\u57fa\u672c\u4e0a\u9ad8\u4e8e44.1kHZ\u91c7\u6837\u7684\u58f0\u97f3\uff0c\u6bd4\u5982\u8bf496kHz\u91c7\u6837\uff0c\u7edd\u5927\u90e8\u5206\u4eba\u5df2\u7ecf\u89c9\u5bdf\u4e0d\u5230\u4e24\u79cd\u91c7\u6837\u51fa\u6765\u7684\u58f0\u97f3\u7684\u5206\u522b\u4e86\u3002\u4e4b\u6240\u4ee5\u4f7f\u752844.1kHZ\u8fd9\u4e2a\u6570\u503c\u662f\u56e0\u4e3a\u7ecf\u8fc7\u4e86\u53cd\u590d\u5b9e\u9a8c\uff0c\u4eba\u4eec\u53d1\u73b0\u8fd9\u4e2a\u91c7\u6837\u7cbe\u5ea6\u6700\u5408\u9002\uff0c\u4f4e\u4e8e\u8fd9\u4e2a\u503c\u5c31\u4f1a\u6709\u8f83\u660e\u663e\u7684\u635f\u5931\uff0c\u800c\u9ad8\u4e8e\u8fd9\u4e2a\u503c\u4eba\u7684\u8033\u6735\u5df2\u7ecf\u5f88\u96be\u5206\u8fa8\uff0c\u800c\u4e14\u589e\u5927\u4e86\u6570\u5b57\u97f3\u9891\u6240\u5360\u7528\u7684\u7a7a\u95f4\u3002\u4e00\u822c\u4e3a\u4e86\u8fbe\u5230\u201c\u4e07\u5206\u7cbe\u786e\u201d\uff0c\u6211\u4eec\u8fd8\u4f1a\u4f7f\u752848k\u751a\u81f396k\u7684\u91c7\u6837\u7cbe\u5ea6\uff0c\u5b9e\u9645\u4e0a\uff0c96k\u91c7\u6837\u7cbe\u5ea6\u548c44.1k\u91c7\u6837\u7cbe\u5ea6\u7684\u533a\u522b\u7edd\u5bf9\u4e0d\u4f1a\u8c6144.1k\u548c22k\u90a3\u6837\u533a\u522b\u5982\u6b64\u4e4b\u5927\uff0c\u6211\u4eec\u6240\u4f7f\u7528\u7684CD\u7684\u91c7\u6837\u6807\u51c6\u5c31\u662f44.1k\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

\u58f0\u5361\u91c7\u6837\u4f4d\u6570\u3001\u91c7\u6837\u9891\u7387\uff1a\u6587\u7ae0\u6458\u8981\uff1a\u91c7\u6837\u4f4d\u6570\u4e0e\u91c7\u6837\u9891\u7387 \u97f3\u9891\u4fe1\u53f7\u662f\u8fde\u7eed\u7684\u6a21\u62df\u4fe1\u53f7\uff0c\u800c\u7535\u8111\u5904\u7406\u7684\u5374\u53ea\u80fd\u662f\u6570\u5b57\u4fe1\u53f7\u3002<\/p><\/div>\n

\u9605\u8bfb\u66f4\u591a<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-205","post","type-post","status-publish","format-standard","hentry","category-electronics"],"_links":{"self":[{"href":"https:\/\/www.itvst.com\/index.php\/wp-json\/wp\/v2\/posts\/205","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.itvst.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.itvst.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.itvst.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.itvst.com\/index.php\/wp-json\/wp\/v2\/comments?post=205"}],"version-history":[{"count":2,"href":"https:\/\/www.itvst.com\/index.php\/wp-json\/wp\/v2\/posts\/205\/revisions"}],"predecessor-version":[{"id":484,"href":"https:\/\/www.itvst.com\/index.php\/wp-json\/wp\/v2\/posts\/205\/revisions\/484"}],"wp:attachment":[{"href":"https:\/\/www.itvst.com\/index.php\/wp-json\/wp\/v2\/media?parent=205"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.itvst.com\/index.php\/wp-json\/wp\/v2\/categories?post=205"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.itvst.com\/index.php\/wp-json\/wp\/v2\/tags?post=205"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}