{"id":42884,"date":"2022-09-19T09:14:18","date_gmt":"2022-09-19T01:14:18","guid":{"rendered":"https:\/\/news.GuitarsChina.com\/?p=42884"},"modified":"2022-09-19T09:14:18","modified_gmt":"2022-09-19T01:14:18","slug":"%e3%80%90%e4%b8%80%e6%ac%a1%e6%90%9e%e6%87%82%e3%80%91%e7%9b%91%e5%90%ac%e9%9f%b3%e7%ae%b1-%e5%8a%9f%e7%8e%87%e6%94%be%e5%a4%a7%e5%99%a8","status":"publish","type":"post","link":"https:\/\/news.GuitarsChina.com\/?p=42884","title":{"rendered":"\u3010\u4e00\u6b21\u641e\u61c2\u3011\u76d1\u542c\u97f3\u7bb1 \u529f\u7387\u653e\u5927\u5668"},"content":{"rendered":"\n<p>\u653e\u5927\u5668\u7535\u8def\u53d1\u5c55\u6982\u8ff0\uff1a<br>\u9996\u5148\uff0c\u653e\u5927\u5668\u7535\u8def\u505a\u4e3a\u653e\u5927\u5668\u7684\u91cd\u8981\u7ec4\u6210\u90e8\u5206\uff0c\u5728\u4e0d\u540c\u65f6\u671f\u7684\u653e\u5927\u5668\u8bbe\u5907\u9886\u57df\u4e2d\uff0c\u626e\u6f14\u7740\u4e0d\u540c\u7684\u89d2\u8272\uff0c\u653e\u5927\u5668\u7535\u8def\u88ab\u9996\u6b21\u7528\u4e8e\u4e2d\u7ee7\u4f20\u64ad\u8bbe\u5907\u4e0a\u4f7f\u7528\uff0c\u662f\u5728\u65e7\u5f0f\u7535\u8bdd\u7ebf\u8def\u4e2d\uff0c\u7528\u4e8e\u5f31\u7535\u6d41\u63a7\u5236\u5916\u547c\u7ebf\u8def\u7684\u7535\u6e90\u7535\u538b<\/p>\n\n\n\n<p>DR.Reginald Fessenden\uff08Dr.\u8d39\u68ee\u767b\uff09\u57281906\u5e7412\u670824\u65e5\uff0c\u9996\u6b21\u628a\u78b3\u7c92\u5f0f\u9ea6\u514b\u98ce\u4f5c\u4e3a\u653e\u5927\u5668\uff0c\u7528\u4e8e\u8c03\u9891\u5e7f\u64ad\u4e2d\u4f20\u9001\u5c04\u9891\u6e90\u7684\u88c5\u7f6e<\/p>\n\n\n\n<p>\u572820\u4e16\u7eaa60\u5e74\u4ee3\uff0c\u771f\u7a7a\u7ba1\u5f00\u59cb\u9010\u6e10\u88ab\u6dd8\u6c70\u3002\u5f53\u65f6\uff0c\u4e00\u4e9b\u5927\u529f\u7387\u653e\u5927\u5668\u6216\u4e13\u4e1a\u7ea7\u7684\u97f3\u9891\u5e94\u7528\uff08\u4f8b\u5982\u5409\u4ed6\u653e\u5927\u5668\u548c\u9ad8\u4fdd\u771f\u653e\u5927\u5668\uff09\u4ecd\u7136\u4f1a\u91c7\u7528\u771f\u7a7a\u7ba1\u653e\u5927\u5668\u7535\u8def\u3002\u8bb8\u591a\u5e7f\u64ad\u53d1\u5c04\u7ad9\u4ecd\u7136\u4f7f\u7528\u771f\u7a7a\u7ba1<\/p>\n\n\n\n<p>20\u4e16\u7eaa70\u5e74\u4ee3\u5f00\u59cb\uff0c\u8d8a\u6765\u8d8a\u591a\u7684\u6676\u4f53\u7ba1\u88ab\u8fde\u63a5\u5230\u4e00\u5757\u82af\u7247\u4e0a\u6765\u5236\u4f5c\u96c6\u6210\u7535\u8def\u3002\u5982\u4eca\u5927\u91cf\u5546\u4e1a\u4e0a\u4f7f\u7528\u7684\u653e\u5927\u5668\u5927\u90fd\u662f\u57fa\u4e8e\u96c6\u6210\u7535\u8def\u7684\u8bbe\u8ba1<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img src=\"https:\/\/img.guitarschina.com\/img2022\/0916yy\/01.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u653e\u5927\u5668\u79cd\u7c7b\u6982\u8ff0\uff1a<\/p>\n\n\n\n<p>A\u7c7b\u653e\u5927\u5668\uff1a<br>A\u7c7b\u653e\u5927\u5668\u7684\u7f3a\u70b9\u662f\u8f93\u51fa\u6548\u7387\u5f88\u4f4e\uff0c\u7406\u8bba\u503c\u4e0d\u8d85\u8fc7\u767e\u5206\u4e4b\u4e94\u5341\uff08\u5b9e\u9645\u8fd8\u8981\u4f4e\u4e00\u4e9b\uff09\u3002\u4ee5\u9a71\u52a8\u8033\u673a\u4e3a\u4f8b\uff0c\u5728\u4e00\u822c\u60c5\u51b5\u4e0b\uff0c\u97f3\u91cf\u8d8a\u5c0f\uff0c\u8017\u7535\u8d8a\u591a\uff0c\u5f53\u8bbe\u5907\u5728\u6ca1\u6709\u4fe1\u53f7\u8f93\u5165\u65f6\uff0c\u7535\u6d41\u4ee5\u6700\u5927\u7684\u989d\u5ea6\u6d41\u52a8\uff0c\u6240\u4ee5\u5728\u5f85\u673a\u6ca1\u542c\u97f3\u4e50\u65f6\uff0c\u5374\u662f\u7528\u7535\u6700\u5feb\u7684\u65f6\u5019\uff1b\u5373\u4f7f\u5728\u542c\u97f3\u4e50\u65f6\uff0c\u6240\u6d88\u8017\u7684\u7535\u80fd\uff0c\u4e5f\u6709 50% \u4ee5\u4e0a\u4ee5\u70ed\u91cf\u5f62\u5f0f\u88ab\u6d88\u8017\u6389\u4e86\u3002\u6240\u4ee5\uff0c\u4e00\u53f0A\u7c7b\u653e\u5927\u5668\u7684\u7528\u7535\u91cf\uff0c\u7edd\u4e0d\u4e9a\u4e8e\u4e00\u53f0\u7a7a\u8c03\u673a\uff0c\u56e0\u6b64\u8fd9 50% \u7684\u6d88\u8017\u70ed\u80fd\uff0c\u5219\u662f\u8ba9\u771f\u7a7a\u7ba1\u9010\u6e10\u8001\u5316\u7684\u539f\u56e0\u3002\u540c\u65f6\u56e0\u4e3a\u53d1\u70ed\u91cf\u592a\u5927\uff0c\u6240\u6709\u96f6\u4ef6\u957f\u671f\u5de5\u4f5c\u4e8e\u5927\u7535\u6d41\u3001\u9ad8\u6e29\u4e0b\uff0c\u5bb9\u6613\u5f15\u8d77\u7a33\u5b9a\u6027\u548c\u7ba1\u5b50\u5bff\u547d\u65b9\u9762\u7684\u95ee\u9898\uff0c\u4ee5\u53ca\u65e5\u540e\u66f4\u6362\u7ef4\u4fee\u7b49\u95ee\u9898<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img src=\"https:\/\/img.guitarschina.com\/img2022\/0916yy\/02.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<p>A\u7c7b\u653e\u5927\u5668\u7535\u8def\u539f\u7406\u56fe<\/p>\n\n\n\n<p>A\u7c7b\u653e\u5927\u5668\u4e00\u822c\u6bd4\u5176\u5b83\u7c7b\u578b\u7ebf\u6027\u5ea6\u66f4\u597d\uff0c\u4e5f\u8f83\u4e3a\u7b80\u5355\uff0c\u8fd9\u7c7b\u653e\u5927\u5668\u901a\u5e38\u7528\u4e8e\u5c0f\u4fe1\u53f7\u7ea7\u6216\u4f4e\u529f\u7387\uff08\u4f8b\u5982\u9a71\u52a8\u8033\u673a\uff09\u5e94\u7528\u4e2d\uff0c\u4e0d\u8fc7\u8fd1\u4e9b\u5e74\uff0cA\u7c7b\u653e\u5927\u5668\u5f97\u5230\u4e86\u4f17\u591a\u5409\u4ed6\u624b\u548c\u8d1d\u65af\u624b\u4eec\u7684\u9752\u7750\uff0c\u4e5f\u4f7f\u5176\u518d\u6b21\u6210\u4e3a\u4e86&#8221;\u5e02\u573a\u5ba0\u513f&#8221;<\/p>\n\n\n\n<p>B\u7c7b\u653e\u5927\u5668\uff1a<br>\u5728B\u7c7b\u653e\u5927\u5668\u4e2d\uff0c\u6709\u4e24\u7ec4\u8f93\u51fa\u5668\u4ef6\uff0c\u5206\u522b\u653e\u5927\u6b63\u8d1f\u534a\u5468\uff0c\u6bcf\u4e00\u4e2a\u90fd\u7cbe\u786e\u5730\u5728\u8f93\u5165\u4fe1\u53f7\u7684180\u5ea6\uff08\u6216\u534a\u5468\u671f\uff09\u65f6\u4ea4\u4e92\u5bfc\u901a<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img src=\"https:\/\/img.guitarschina.com\/img2022\/0916yy\/03.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<p>AB\u7c7b\u653e\u5927\u5668\u7535\u8def\u539f\u7406\u56fe<\/p>\n\n\n\n<p>AB\u7c7b\u653e\u5927\u5668\uff1a<br>\u662fA\u7c7b\u653e\u5927\u5668\u548cB\u7c7b\u653e\u5927\u5668\u7684\u4e00\u79cd\u6298\u8877\u8bbe\u8ba1\uff0c\u5b83\u6539\u5584\u4e86\u5c0f\u4fe1\u53f7\u8f93\u51fa\u7684\u7ebf\u6027\u5ea6;\u5bfc\u901a\u89d2\u5728180\u5ea6\u4ee5\u4e0a\uff0c\u5177\u4f53\u503c\u7531\u8bbe\u8ba1\u8005\u51b3\u5b9a\u3002\u7531\u4e8e\u4ed6\u4eec\u6709\u8f83\u9ad8\u7684\u6548\u7387\uff0c\u5e38\u7528\u4e8e\u4f4e\u9891\u653e\u5927\u5668\uff08\u5982\u97f3\u9891\u548cHi-Fi\uff09\u4e2d\uff1b\u6216\u8005\u4e5f\u7528\u4e8e\u5176\u5b83\u7ebf\u6027\u5ea6\u548c\u6548\u7387\u8981\u6c42\u5f88\u7cbe\u5bc6\u548c\u91cd\u8981\u7684\u8bbe\u8ba1\uff08\u5982\u624b\u673a\uff0c\u8702\u7a9d\u53d1\u5c04\u5854\uff0c\u7535\u89c6\u53d1\u5c04\u53f0\u7b49\uff09<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img src=\"https:\/\/img.guitarschina.com\/img2022\/0916yy\/10.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u56fe\u4e3a\uff1a\u642d\u8f7dAB\u7c7b\u529f\u7387\u653e\u5927\u5668\u7684M-Audio BX5 D3 \u76d1\u542c\u97f3\u7bb1<\/p>\n\n\n\n<p>AB\u7c7b\u5de5\u4f5c\u72b6\u6001\u901a\u5e38\u662f\u4e24\u53ea\u6676\u4f53\u7ba1\u914d\u5408\u8fdb\u884c\uff0c\u5728\u6ca1\u6709\u4fe1\u53f7\u7684\u65f6\u5019\uff0c\u4e24\u53ea\u6676\u4f53\u7ba1\u90fd\u662f\u5bfc\u901a\u7684\uff0c\u4f46\u5176\u4e2d\u7684\u7535\u6d41\u5f88\u5c0f\uff0c\u5f53\u6709\u4fe1\u53f7\u8f93\u5165\u65f6\uff0c\u6676\u4f53\u7ba1\u4e2d\u7684\u7535\u6d41\u624d\u4f1a\u53d8\u5927.\u7531\u4e8e\u4fe1\u53f7\u7684\u4f5c\u7528\u4f7f\u5176\u4e2d\u7684\u4e00\u53ea\u6676\u4f53\u7ba1\u622a\u6b62\u7684\u65f6\u5019\uff0c\u53e6\u4e00\u53ea\u6676\u4f53\u7ba1\u5219\u4e00\u5b9a\u662f\u5bfc\u901a\u7684\uff0c\u4e24\u53ea\u7ba1\u5b50\u59cb\u7ec8\u662f\u8f6e\u6d41\u622a\u6b62\u548c\u5bfc\u901a\uff0c\u5e76\u4e14\u5176\u4e2d\u6d41\u8fc7\u7684\u7535\u6d41\u51e0\u4e4e\u662f\u5168\u90e8\u9001\u5165\u626c\u58f0\u5668\uff0c\u56e0\u6b64\uff0cAB\u7c7b\u529f\u653e\u4ea7\u751f\u7684\u70ed\u91cf\u8f83\u5c0f\uff0c\u5e76\u4e14\u6548\u7387\u9ad8\uff0c\u4e00\u822c\u572870%\u4ee5\u4e0a<\/p>\n\n\n\n<p>C\u7c7b\u653e\u5927\u5668\uff1a<br>\u4e5f\u79f0\u4e3a\u9ad8\u529f\u7387\u5c04\u9891\uff08RF\uff09\u653e\u5927\u5668\u3002C\u7c7b\u653e\u5927\u5668\u8bbe\u8ba1\u6210\u5728\u8f93\u5165\u4fe1\u53f7\u4e0d\u8db3180\u00b0\u65f6\u5bfc\u901a\uff0c\u4fe1\u53f7\u7531\u8c03\u8c10\u7535\u8def\u8fd8\u539f\u4e3a\u8fd1\u4f3c\u6b63\u5f26\u5f62\u72b6\uff0c\u540c\u65f6\u6548\u7387\u6bd4A\u7c7b\u3001AB\u7c7b\u6216\u8005B\u7c7b\u653e\u5927\u5668\u90fd\u9ad8\u5f88\u591a\uff0c\u7f3a\u70b9\u662f\u7ebf\u6027\u5ea6\u4e0d\u597d\uff0c\u8f93\u51fa\u6ce2\u5f62\u4e25\u91cd\u53d8\u5f62\uff0c\u6240\u4ee5C\u7c7b\u653e\u5927\u5668\u4e00\u822c\u53ea\u4f1a\u5e94\u7528\u5728\u5c04\u9891(RF)\u8c03\u8c10\u7c7b\u653e\u5927\u5668\u4e0a<br>D\u7c7b\u653e\u5927\u5668\uff1a<br>D\u7c7b\u653e\u5927\u5668\u662f\u4e00\u79cd\u5c06\u8f93\u5165\u6a21\u62df\u97f3\u9891\u4fe1\u53f7\u6216PCM\u6216\u6570\u5b57\u4fe1\u606f\uff0c\u53d8\u6362\u6210PWM\uff08\u8109\u51b2\u5bbd\u5ea6\u8c03\u5236\u4fe1\u53f7\uff09\u548cPDM\uff08\u8109\u51b2\u5bc6\u5ea6\u8c03\u5236\u4fe1\u53f7\uff09\u7684\u8109\u51b2\u4fe1\u53f7\uff0c\u7136\u540ePWM\u548cPDM\u7684\u8109\u51b2\u4fe1\u53f7\u53bb\u63a7\u5236\u5927\u529f\u7387\u5f00\u5173\u5668\u4ef6\uff08\u901a\/\u65ad\uff09\u97f3\u9891\u529f\u7387\u653e\u5927\u5668 \u3002D\u7c7b\u653e\u5927\u5668\u7531\u8f93\u5165\u4fe1\u53f7\u5904\u7406\u7535\u8def\u3001\u5f00\u5173\u4fe1\u53f7\u5f62\u6210\u7535\u8def\u3001\u5927\u529f\u7387\u5f00\u5173\u7535\u8def\uff08\u534a\u6865\u5f0f\u548c\u5168\u6865\u5f0f\uff09\u548c\u4f4e\u901a\u6ee4\u6ce2\u4fe1\u53f7\u7b49\u56db\u90e8\u5206\u7ec4\u6210<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img src=\"https:\/\/img.guitarschina.com\/img2022\/0916yy\/04.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<p>D\u7c7b\u653e\u5927\u5668\u7535\u8def\u539f\u7406\u56fe<\/p>\n\n\n\n<p>\u7b2c\u4e00\u9636\u6bb5\u7684\u6bd4\u8f83\u5668\uff08C\uff09\u5148\u7528\u4e09\u89d2\u6ce2\u53d1\u751f\u5668\uff08Triangular wave generator\uff09\u4e0e\u8f93\u5165\u7684\u7c7b\u6bd4\u8baf\u53f7\u6bd4\u8f83\uff0c\u4ea7\u751fPWM\u8baf\u53f7\uff08\u8fd9\u8baf\u53f7\u5176\u5b9e\u662f\u6570\u4f4d\u8baf\u53f7\uff09<br>\u7b2c\u4e8c\u9636\u6bb5\u5219\u662f\u5f00\u5173\u5143\u4ef6\uff08Switching controller\uff09\u4f9d\u7167PWM\u8baf\u53f7\u6765\u5feb\u901f\u5f00\u5173\u3001\u8fd9\u6837\u4f1a\u4ea7\u751f\u88ab\u653e\u5927\u7684PWM\u8baf\u53f7\uff0c\u8fd9\u653e\u5927\u8baf\u53f7\u4e0e\u4e8e\u8f93\u5165\u6ce2\u5f62\u76f8\u8fd1<br>\u7b2c\u4e09\u9636\u6bb5\u5219\u662f\u7528\u4f4e\u901a\u6ee4\u6ce2\u5668\uff08low-pass filter\uff09\u6765\u8fc7\u6ee4\u8f93\u51fa\u8baf\u53f7\u7684\u9ad8\u9891\u6742\u8baf\uff0c\u8fc7\u6ee4\u540e\u7684\u8f93\u51fa\u8baf\u53f7\u7684\u6ce2\u5f62\u5c31\u4e0e\u8f93\u5165\u8baf\u53f7\u7684\u51e0\u4e4e\u4e00\u6837\u4e86<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img src=\"https:\/\/img.guitarschina.com\/img2022\/0916yy\/05.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u56fe\u4e3a\uff1a\u642d\u8f7dD\u7c7b\u529f\u7387\u653e\u5927\u5668\u7684\u610f\u5927\u5229IK Multimedia\u7684 iLoud Micro Moniter \u84dd\u7259\u53c2\u8003\u76d1\u542c\u97f3\u7bb1<\/p>\n\n\n\n<p>D\u7c7b\u653e\u5927\u5668\u4f18\u70b9\uff1a<br>\u5177\u6709\u5f88\u9ad8\u7684\u8f93\u51fa\u6548\u7387\uff0c\u901a\u5e38\u80fd\u8fbe\u523085%\u4ee5\u4e0a\u6216\u66f4\u9ad8\u4e00\u4e9b\u4f53\u79ef\u5c0f\uff0c\u53ef\u4ee5\u6bd4\u6a21\u62df\u7684\u653e\u5927\u7535\u8def\u8282\u7701\u5f88\u5927\u7a7a\u95f4\u65e0\u88c2\u566a\u58f0\u63a5\u901a\u4f4e\u5931\u771f\u3001\u9891\u7387\u54cd\u5e94\u66f2\u7ebf\u4f18\u8d28\uff0c\u5916\u56f4\u5143\u5668\u4ef6\u5c11\uff0c\u4fbf\u4e8e\u8bbe\u8ba1\u3001\u8c03\u8bd5<br>\u56e0\u4e3aD\u7c7b\u653e\u5927\u5668\u901a\u8fc7\u6bcf\u4e2a\u8f93\u51fa\u5668\u4ef6\u5143\u4ef6\u5bfc\u901a\u6216\u5173\u65ad\uff0c\u6765\u8f93\u51fa\u653e\u5927\u7684\u7c7b\u6bd4\u8baf\u53f7\uff0c\u56e0\u6b64\u80fd\u91cf\u635f\u5931\u8fbe\u5230\u6700\u5c0f\u5316\uff1b\u7531\u4e8e\u539f\u59cb\u8baf\u53f7\u662f\u5148\u88ab\u8f6c\u6362\u6210\u4e00\u7cfb\u5217\u7684\u5f00\u5173\uff081\u4e0e0\uff09\u6307\u4ee4\uff0c\u56e0\u6b64\u53c8\u88ab\u79f0\u4e3a\u6570\u5b57\u653e\u5927\u5668\u6216\u6570\u4f4d\u653e\u5927\u5668<\/p>\n\n\n\n<p>G\u7c7b\u653e\u5927\u5668\uff1a<br>G \u7c7b &#8211; \u8bbe\u8ba1\u590d\u6742\uff0c\u4f46\u8bbe\u8ba1\u6b63\u786e\uff0c\u806a\u660e\u7684\u89e3\u51b3\u65b9\u6848\u4f18\u70b9 &#8211; \u66f4\u9ad8\u7684\u6548\u7387\u548c\u900f\u660e\u5ea6\uff0c\u66f4\u5c11\u7684\u70ed\u80fd\u6d6a\u8d39\u7f3a\u70b9 &#8211; \u6210\u672c\u9ad8\u3001\u5236\u4f5c\u5de5\u827a\u96be\u5ea6\u5927\uff0c\u56e0\u6b64\u5f88\u5c11\u89c1<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img src=\"https:\/\/img.guitarschina.com\/img2022\/0916yy\/06.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u56fe\u4e3a\uff1a\u88c5\u6709G\u7c7b\u529f\u7387\u653e\u5927\u5668\u7684\u6cd5\u56fd Focal Trio 6 BE \u8fd1\u573a\u76d1\u542c\u97f3\u7bb1<\/p>\n\n\n\n<p>G\u7c7b\u653e\u5927\u5668\u7a76\u7adf\u662f\u4ec0\u4e48\uff1f<\/p>\n\n\n\n<p>\u7c7b\u4f3c\u6df7\u5408\u52a8\u529b\u6c7d\u8f66\u53d1\u52a8\u673a\u4e00\u6837\uff0cG \u7c7b\u653e\u5927\u5668\u5b9e\u73b0\u4e86\u591a\u4e2a\u7535\u6e90\uff0c\u800c\u4e0d\u4ec5\u4ec5\u662f\u4e00\u4e2a\u7535\u6e90\uff0c\u5982\u679c\u63a5\u6536\u5230\u8d85\u51fa\u80fd\u529b\u8303\u56f4\u7684\u52a8\u6001\u4fe1\u53f7\u5728\u7b2c\u4e00\u4e2a\u7535\u6e90\u4e2d\uff0c\u7b2c\u4e8c\u4e2a\u7535\u6e90\u4f1a\u6839\u636e\u9700\u8981\uff0c\u6765\u9010\u6e10\u8fbe\u5230\u5168\u989d\u5b9a\u529f\u7387\u8f93\u51fa\uff0c\u8fd9\u63d0\u4f9b\u4e86\u4e00\u4e2a\u975e\u5e38\u6709\u6548\u7684\u989d\u5916\u7684\u7535\u6e90\u8bbe\u8ba1\uff0c\u4ec5\u5728\u9700\u8981\u65f6\u4f7f\u7528\uff0c\u5c31\u50cf\u6da1\u8f6e\u589e\u538b\u5668\u4e00\u6837\uff0c\u73b0\u4ee3\u9ad8\u901f\u7845\u4f7f\u6211\u4eec\u80fd\u591f\u4ee5\u524d\u6240\u672a\u6709\u7684\u901f\u5ea6\u8fdb\u884c\u8fd9\u79cd\u5207\u6362\uff0c\u751a\u81f3\u8d85\u8d8a\u97f3\u9891\u5e26\u5bbd\uff0c\u56e0\u6b64\u6ca1\u6709\u5ef6\u8fdf<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img src=\"https:\/\/img.guitarschina.com\/img2022\/0916yy\/07.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<p>G\u7c7b\u653e\u5927\u5668\u7535\u8def\u539f\u7406\u56fe<\/p>\n\n\n\n<p>\u7b2c\u4e00\u4e2a\u7535\u6e90\u529f\u7387\u8f83\u4f4e\uff0c\u5728\u8be5\u533a\u57df\u5185\u4ee5\u7eaf A \u7c7b\u8fd0\u884c\uff0c\u6ca1\u6709\u4ea4\u53c9\u5931\u771f\u3002\u5728\u9700\u8981\u65f6\uff0c\u53ef\u80fd\u4f1a\u51fa\u73b0\u6781\u9ad8\u7684\u529f\u7387\u6c34\u5e73\uff0c\u56e0\u4e3a\u653e\u5927\u5668\u5728\u4e0d\u4f7f\u7528\u65f6\u4f1a\u4ee5\u70ed\u91cf\u7684\u5f62\u5f0f\u635f\u8017\u6389\u5f88\u5c11\u7684\u80fd\u91cf\uff0c\u4e0d\u53d7\u63a7\u5236\u7684\u8fd9\u80a1\u529b\u91cf\u4f1a\u88ab\u4e0d\u5f53\u4f7f\u7528\uff0c\u56e0\u6b64\u5c31\u50cf\u9ad8\u6027\u80fd\u6c7d\u8f66\u8f6e\u80ce\u4e00\u6837\uff0c\u653e\u5927\u5668\u5185\u7684\u591a\u4e2a\u8f93\u51fa\u8bbe\u5907\u59cb\u7ec8\u7d27\u7d27\u6293\u4f4f\u626c\u58f0\u5668\uff0c\u786e\u4fdd\u60a8\u7684 \u8046\u542c\u4f53\u9a8c\u6c38\u8fdc\u4e0d\u4f1a&#8221;\u504f\u79bb\u8f68\u9053&#8221;<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img src=\"https:\/\/img.guitarschina.com\/img2022\/0916yy\/08.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u642d\u8f7dG\u7c7b\u653e\u5927\u5668\u7684\u6cd5\u56fdFocal \u4e13\u4e1a\u7ea7\u76d1\u542c\u97f3\u7bb1<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img src=\"https:\/\/img.guitarschina.com\/img2022\/0916yy\/09.jpg\" alt=\"\"\/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>\u653e\u5927\u5668\u7535\u8def\u53d1\u5c55\u6982\u8ff0\uff1a\u9996\u5148\uff0c\u653e\u5927\u5668\u7535\u8def\u505a\u4e3a\u653e\u5927\u5668\u7684\u91cd\u8981\u7ec4\u6210\u90e8\u5206\uff0c\u5728\u4e0d\u540c\u65f6\u671f\u7684\u653e\u5927\u5668\u8bbe\u5907\u9886\u57df\u4e2d\uff0c\u626e\u6f14\u7740\u4e0d\u540c\u7684\u89d2\u8272\uff0c\u653e\u5927\u5668\u7535\u8def\u88ab\u9996\u6b21\u7528\u4e8e\u4e2d\u7ee7\u4f20\u64ad\u8bbe\u5907\u4e0a\u4f7f\u7528\uff0c\u662f\u5728\u65e7\u5f0f\u7535\u8bdd\u7ebf\u8def\u4e2d\uff0c\u7528\u4e8e\u5f31\u7535\u6d41\u63a7\u5236\u5916\u547c\u7ebf\u8def\u7684\u7535\u6e90\u7535\u538b DR.Reginald Fessenden\uff08Dr.\u8d39\u68ee\u767b\uff09\u57281906\u5e7412\u670824\u65e5\uff0c\u9996\u6b21\u628a\u78b3\u7c92\u5f0f\u9ea6\u514b\u98ce\u4f5c\u4e3a\u653e\u5927\u5668\uff0c\u7528\u4e8e\u8c03\u9891\u5e7f\u64ad\u4e2d\u4f20\u9001\u5c04\u9891\u6e90\u7684\u88c5\u7f6e \u572820\u4e16\u7eaa60\u5e74\u4ee3\uff0c\u771f\u7a7a\u7ba1\u5f00\u59cb\u9010\u6e10\u88ab\u6dd8\u6c70\u3002\u5f53\u65f6\uff0c\u4e00\u4e9b\u5927\u529f\u7387\u653e\u5927\u5668\u6216\u4e13\u4e1a\u7ea7\u7684\u97f3\u9891\u5e94\u7528\uff08\u4f8b\u5982\u5409\u4ed6\u653e\u5927\u5668\u548c\u9ad8\u4fdd\u771f\u653e\u5927\u5668\uff09\u4ecd\u7136\u4f1a\u91c7\u7528\u771f\u7a7a\u7ba1\u653e\u5927\u5668\u7535\u8def\u3002\u8bb8\u591a\u5e7f\u64ad\u53d1\u5c04\u7ad9\u4ecd\u7136\u4f7f\u7528\u771f\u7a7a\u7ba1 20\u4e16\u7eaa70\u5e74\u4ee3\u5f00\u59cb\uff0c\u8d8a\u6765\u8d8a\u591a\u7684\u6676\u4f53\u7ba1\u88ab\u8fde\u63a5\u5230\u4e00\u5757\u82af\u7247\u4e0a\u6765\u5236\u4f5c\u96c6\u6210\u7535\u8def\u3002\u5982\u4eca\u5927\u91cf\u5546\u4e1a\u4e0a\u4f7f\u7528\u7684\u653e\u5927\u5668\u5927\u90fd\u662f\u57fa\u4e8e\u96c6\u6210\u7535\u8def\u7684\u8bbe\u8ba1 \u653e\u5927\u5668\u79cd\u7c7b\u6982\u8ff0\uff1a A\u7c7b\u653e\u5927\u5668\uff1aA\u7c7b\u653e\u5927\u5668\u7684\u7f3a\u70b9\u662f\u8f93\u51fa\u6548\u7387\u5f88\u4f4e\uff0c\u7406\u8bba\u503c\u4e0d\u8d85\u8fc7\u767e\u5206\u4e4b\u4e94\u5341\uff08\u5b9e\u9645\u8fd8\u8981\u4f4e\u4e00\u4e9b\uff09\u3002\u4ee5\u9a71\u52a8\u8033\u673a\u4e3a\u4f8b\uff0c\u5728\u4e00\u822c\u60c5\u51b5\u4e0b\uff0c\u97f3\u91cf\u8d8a\u5c0f\uff0c\u8017\u7535\u8d8a\u591a\uff0c\u5f53\u8bbe\u5907\u5728\u6ca1\u6709\u4fe1\u53f7\u8f93\u5165\u65f6\uff0c\u7535\u6d41\u4ee5\u6700\u5927\u7684\u989d\u5ea6\u6d41\u52a8\uff0c\u6240\u4ee5\u5728\u5f85\u673a\u6ca1\u542c\u97f3\u4e50\u65f6\uff0c\u5374\u662f\u7528\u7535\u6700\u5feb\u7684\u65f6\u5019\uff1b\u5373\u4f7f\u5728\u542c\u97f3\u4e50\u65f6\uff0c\u6240\u6d88\u8017\u7684\u7535\u80fd\uff0c\u4e5f\u6709 50% \u4ee5\u4e0a\u4ee5\u70ed\u91cf\u5f62\u5f0f\u88ab\u6d88\u8017\u6389\u4e86\u3002\u6240\u4ee5\uff0c\u4e00\u53f0A\u7c7b\u653e\u5927\u5668\u7684\u7528\u7535\u91cf\uff0c\u7edd\u4e0d\u4e9a\u4e8e\u4e00\u53f0\u7a7a\u8c03\u673a\uff0c\u56e0\u6b64\u8fd9 50% \u7684\u6d88\u8017\u70ed\u80fd\uff0c\u5219\u662f\u8ba9\u771f\u7a7a\u7ba1\u9010\u6e10\u8001\u5316\u7684\u539f\u56e0\u3002\u540c\u65f6\u56e0\u4e3a\u53d1\u70ed\u91cf\u592a\u5927\uff0c\u6240\u6709\u96f6\u4ef6\u957f\u671f\u5de5\u4f5c\u4e8e\u5927\u7535\u6d41\u3001\u9ad8\u6e29\u4e0b\uff0c\u5bb9\u6613\u5f15\u8d77\u7a33\u5b9a\u6027\u548c\u7ba1\u5b50\u5bff\u547d\u65b9\u9762\u7684\u95ee\u9898\uff0c\u4ee5\u53ca\u65e5\u540e\u66f4\u6362\u7ef4\u4fee\u7b49\u95ee\u9898 A\u7c7b\u653e\u5927\u5668\u7535\u8def\u539f\u7406\u56fe A\u7c7b\u653e\u5927\u5668\u4e00\u822c\u6bd4\u5176\u5b83\u7c7b\u578b\u7ebf\u6027\u5ea6\u66f4\u597d\uff0c\u4e5f\u8f83\u4e3a\u7b80\u5355\uff0c\u8fd9\u7c7b\u653e\u5927\u5668\u901a\u5e38\u7528\u4e8e\u5c0f\u4fe1\u53f7\u7ea7\u6216\u4f4e\u529f\u7387\uff08\u4f8b\u5982\u9a71\u52a8\u8033\u673a\uff09\u5e94\u7528\u4e2d\uff0c\u4e0d\u8fc7\u8fd1\u4e9b\u5e74\uff0cA\u7c7b\u653e\u5927\u5668\u5f97\u5230\u4e86\u4f17\u591a\u5409\u4ed6\u624b\u548c\u8d1d\u65af\u624b\u4eec\u7684\u9752\u7750\uff0c\u4e5f\u4f7f\u5176\u518d\u6b21\u6210\u4e3a\u4e86&#8221;\u5e02\u573a\u5ba0\u513f&#8221; B\u7c7b\u653e\u5927\u5668\uff1a\u5728B\u7c7b\u653e\u5927\u5668\u4e2d\uff0c\u6709\u4e24\u7ec4\u8f93\u51fa\u5668\u4ef6\uff0c\u5206\u522b\u653e\u5927\u6b63\u8d1f\u534a\u5468\uff0c\u6bcf\u4e00\u4e2a\u90fd\u7cbe\u786e\u5730\u5728\u8f93\u5165\u4fe1\u53f7\u7684180\u5ea6\uff08\u6216\u534a\u5468\u671f\uff09\u65f6\u4ea4\u4e92\u5bfc\u901a AB\u7c7b\u653e\u5927\u5668\u7535\u8def\u539f\u7406\u56fe AB\u7c7b\u653e\u5927\u5668\uff1a\u662fA\u7c7b\u653e\u5927\u5668\u548cB\u7c7b\u653e\u5927\u5668\u7684\u4e00\u79cd\u6298\u8877\u8bbe\u8ba1\uff0c\u5b83\u6539\u5584\u4e86\u5c0f\u4fe1\u53f7\u8f93\u51fa\u7684\u7ebf\u6027\u5ea6;\u5bfc\u901a\u89d2\u5728180\u5ea6\u4ee5\u4e0a\uff0c\u5177\u4f53\u503c\u7531\u8bbe\u8ba1\u8005\u51b3\u5b9a\u3002\u7531\u4e8e\u4ed6\u4eec\u6709\u8f83\u9ad8\u7684\u6548\u7387\uff0c\u5e38\u7528\u4e8e\u4f4e\u9891\u653e\u5927\u5668\uff08\u5982\u97f3\u9891\u548cHi-Fi\uff09\u4e2d\uff1b\u6216\u8005\u4e5f\u7528\u4e8e\u5176\u5b83\u7ebf\u6027\u5ea6\u548c\u6548\u7387\u8981\u6c42\u5f88\u7cbe\u5bc6\u548c\u91cd\u8981\u7684\u8bbe\u8ba1\uff08\u5982\u624b\u673a\uff0c\u8702\u7a9d\u53d1\u5c04\u5854\uff0c\u7535\u89c6\u53d1\u5c04\u53f0\u7b49\uff09 \u56fe\u4e3a\uff1a\u642d\u8f7dAB\u7c7b\u529f\u7387\u653e\u5927\u5668\u7684M-Audio BX5 D3 \u76d1\u542c\u97f3\u7bb1 AB\u7c7b\u5de5\u4f5c\u72b6\u6001\u901a\u5e38\u662f\u4e24\u53ea\u6676\u4f53\u7ba1\u914d\u5408\u8fdb\u884c\uff0c\u5728\u6ca1\u6709\u4fe1\u53f7\u7684\u65f6\u5019\uff0c\u4e24\u53ea\u6676\u4f53\u7ba1\u90fd\u662f\u5bfc\u901a\u7684\uff0c\u4f46\u5176\u4e2d\u7684\u7535\u6d41\u5f88\u5c0f\uff0c\u5f53\u6709\u4fe1\u53f7\u8f93\u5165\u65f6\uff0c\u6676\u4f53\u7ba1\u4e2d\u7684\u7535\u6d41\u624d\u4f1a\u53d8\u5927.\u7531\u4e8e\u4fe1\u53f7\u7684\u4f5c\u7528\u4f7f\u5176\u4e2d\u7684\u4e00\u53ea\u6676\u4f53\u7ba1\u622a\u6b62\u7684\u65f6\u5019\uff0c\u53e6\u4e00\u53ea\u6676\u4f53\u7ba1\u5219\u4e00\u5b9a\u662f\u5bfc\u901a\u7684\uff0c\u4e24\u53ea\u7ba1\u5b50\u59cb\u7ec8\u662f\u8f6e\u6d41\u622a\u6b62\u548c\u5bfc\u901a\uff0c\u5e76\u4e14\u5176\u4e2d\u6d41\u8fc7\u7684\u7535\u6d41\u51e0\u4e4e\u662f\u5168\u90e8\u9001\u5165\u626c\u58f0\u5668\uff0c\u56e0\u6b64\uff0cAB\u7c7b\u529f\u653e\u4ea7\u751f\u7684\u70ed\u91cf\u8f83\u5c0f\uff0c\u5e76\u4e14\u6548\u7387\u9ad8\uff0c\u4e00\u822c\u572870%\u4ee5\u4e0a C\u7c7b\u653e\u5927\u5668\uff1a\u4e5f\u79f0\u4e3a\u9ad8\u529f\u7387\u5c04\u9891\uff08RF\uff09\u653e\u5927\u5668\u3002C\u7c7b\u653e\u5927\u5668\u8bbe\u8ba1\u6210\u5728\u8f93\u5165\u4fe1\u53f7\u4e0d\u8db3180\u00b0\u65f6\u5bfc\u901a\uff0c\u4fe1\u53f7\u7531\u8c03\u8c10\u7535\u8def\u8fd8\u539f\u4e3a\u8fd1\u4f3c\u6b63\u5f26\u5f62\u72b6\uff0c\u540c\u65f6\u6548\u7387\u6bd4A\u7c7b\u3001AB\u7c7b\u6216\u8005B\u7c7b\u653e\u5927\u5668\u90fd\u9ad8\u5f88\u591a\uff0c\u7f3a\u70b9\u662f\u7ebf\u6027\u5ea6\u4e0d\u597d\uff0c\u8f93\u51fa\u6ce2\u5f62\u4e25\u91cd\u53d8\u5f62\uff0c\u6240\u4ee5C\u7c7b\u653e\u5927\u5668\u4e00\u822c\u53ea\u4f1a\u5e94\u7528\u5728\u5c04\u9891(RF)\u8c03\u8c10\u7c7b\u653e\u5927\u5668\u4e0aD\u7c7b\u653e\u5927\u5668\uff1aD\u7c7b\u653e\u5927\u5668\u662f\u4e00\u79cd\u5c06\u8f93\u5165\u6a21\u62df\u97f3\u9891\u4fe1\u53f7\u6216PCM\u6216\u6570\u5b57\u4fe1\u606f\uff0c\u53d8\u6362\u6210PWM\uff08\u8109\u51b2\u5bbd\u5ea6\u8c03\u5236\u4fe1\u53f7\uff09\u548cPDM\uff08\u8109\u51b2\u5bc6\u5ea6\u8c03\u5236\u4fe1\u53f7\uff09\u7684\u8109\u51b2\u4fe1\u53f7\uff0c\u7136\u540ePWM\u548cPDM\u7684\u8109\u51b2\u4fe1\u53f7\u53bb\u63a7\u5236\u5927\u529f\u7387\u5f00\u5173\u5668\u4ef6\uff08\u901a\/\u65ad\uff09\u97f3\u9891\u529f\u7387\u653e\u5927\u5668 \u3002D\u7c7b\u653e\u5927\u5668\u7531\u8f93\u5165\u4fe1\u53f7\u5904\u7406\u7535\u8def\u3001\u5f00\u5173\u4fe1\u53f7\u5f62\u6210\u7535\u8def\u3001\u5927\u529f\u7387\u5f00\u5173\u7535\u8def\uff08\u534a\u6865\u5f0f\u548c\u5168\u6865\u5f0f\uff09\u548c\u4f4e\u901a\u6ee4\u6ce2\u4fe1\u53f7\u7b49\u56db\u90e8\u5206\u7ec4\u6210 D\u7c7b\u653e\u5927\u5668\u7535\u8def\u539f\u7406\u56fe \u7b2c\u4e00\u9636\u6bb5\u7684\u6bd4\u8f83\u5668\uff08C\uff09\u5148\u7528\u4e09\u89d2\u6ce2\u53d1\u751f\u5668\uff08Triangular wave generator\uff09\u4e0e\u8f93\u5165\u7684\u7c7b\u6bd4\u8baf\u53f7\u6bd4\u8f83\uff0c\u4ea7\u751fPWM\u8baf\u53f7\uff08\u8fd9\u8baf\u53f7\u5176\u5b9e\u662f\u6570\u4f4d\u8baf\u53f7\uff09\u7b2c\u4e8c\u9636\u6bb5\u5219\u662f\u5f00\u5173\u5143\u4ef6\uff08Switching controller\uff09\u4f9d\u7167PWM\u8baf\u53f7\u6765\u5feb\u901f\u5f00\u5173\u3001\u8fd9\u6837\u4f1a\u4ea7\u751f\u88ab\u653e\u5927\u7684PWM\u8baf\u53f7\uff0c\u8fd9\u653e\u5927\u8baf\u53f7\u4e0e\u4e8e\u8f93\u5165\u6ce2\u5f62\u76f8\u8fd1\u7b2c\u4e09\u9636\u6bb5\u5219\u662f\u7528\u4f4e\u901a\u6ee4\u6ce2\u5668\uff08low-pass filter\uff09\u6765\u8fc7\u6ee4\u8f93\u51fa\u8baf\u53f7\u7684\u9ad8\u9891\u6742\u8baf\uff0c\u8fc7\u6ee4\u540e\u7684\u8f93\u51fa\u8baf\u53f7\u7684\u6ce2\u5f62\u5c31\u4e0e\u8f93\u5165\u8baf\u53f7\u7684\u51e0\u4e4e\u4e00\u6837\u4e86 \u56fe\u4e3a\uff1a\u642d\u8f7dD\u7c7b\u529f\u7387\u653e\u5927\u5668\u7684\u610f\u5927\u5229IK Multimedia\u7684 iLoud Micro Moniter \u84dd\u7259\u53c2\u8003\u76d1\u542c\u97f3\u7bb1 D\u7c7b\u653e\u5927\u5668\u4f18\u70b9\uff1a\u5177\u6709\u5f88\u9ad8\u7684\u8f93\u51fa\u6548\u7387\uff0c\u901a\u5e38\u80fd\u8fbe\u523085%\u4ee5\u4e0a\u6216\u66f4\u9ad8\u4e00\u4e9b\u4f53\u79ef\u5c0f\uff0c\u53ef\u4ee5\u6bd4\u6a21\u62df\u7684\u653e\u5927\u7535\u8def\u8282\u7701\u5f88\u5927\u7a7a\u95f4\u65e0\u88c2\u566a\u58f0\u63a5\u901a\u4f4e\u5931\u771f\u3001\u9891\u7387\u54cd\u5e94\u66f2\u7ebf\u4f18\u8d28\uff0c\u5916\u56f4\u5143\u5668\u4ef6\u5c11\uff0c\u4fbf\u4e8e\u8bbe\u8ba1\u3001\u8c03\u8bd5\u56e0\u4e3aD\u7c7b\u653e\u5927\u5668\u901a\u8fc7\u6bcf\u4e2a\u8f93\u51fa\u5668\u4ef6\u5143\u4ef6\u5bfc\u901a\u6216\u5173\u65ad\uff0c\u6765\u8f93\u51fa\u653e\u5927\u7684\u7c7b\u6bd4\u8baf\u53f7\uff0c\u56e0\u6b64\u80fd\u91cf\u635f\u5931\u8fbe\u5230\u6700\u5c0f\u5316\uff1b\u7531\u4e8e\u539f\u59cb\u8baf\u53f7\u662f\u5148\u88ab\u8f6c\u6362\u6210\u4e00\u7cfb\u5217\u7684\u5f00\u5173\uff081\u4e0e0\uff09\u6307\u4ee4\uff0c\u56e0\u6b64\u53c8\u88ab\u79f0\u4e3a\u6570\u5b57\u653e\u5927\u5668\u6216\u6570\u4f4d\u653e\u5927\u5668 G\u7c7b\u653e\u5927\u5668\uff1aG \u7c7b &#8211; \u8bbe\u8ba1\u590d\u6742\uff0c\u4f46\u8bbe\u8ba1\u6b63\u786e\uff0c\u806a\u660e\u7684\u89e3\u51b3\u65b9\u6848\u4f18\u70b9 \u2026\u2026<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":[],"categories":[8],"tags":[],"_links":{"self":[{"href":"https:\/\/news.GuitarsChina.com\/index.php?rest_route=\/wp\/v2\/posts\/42884"}],"collection":[{"href":"https:\/\/news.GuitarsChina.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/news.GuitarsChina.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/news.GuitarsChina.com\/index.php?rest_route=\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/news.GuitarsChina.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=42884"}],"version-history":[{"count":1,"href":"https:\/\/news.GuitarsChina.com\/index.php?rest_route=\/wp\/v2\/posts\/42884\/revisions"}],"predecessor-version":[{"id":42885,"href":"https:\/\/news.GuitarsChina.com\/index.php?rest_route=\/wp\/v2\/posts\/42884\/revisions\/42885"}],"wp:attachment":[{"href":"https:\/\/news.GuitarsChina.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=42884"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/news.GuitarsChina.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=42884"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/news.GuitarsChina.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=42884"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}