{"id":862,"date":"2018-09-23T15:58:23","date_gmt":"2018-09-23T07:58:23","guid":{"rendered":"http:\/\/www.aoyint.com\/2020\/03\/23\/01a7f72f0ef40426d2b45429bc407b6e\/"},"modified":"2018-09-23T15:58:23","modified_gmt":"2018-09-23T07:58:23","slug":"01a7f72f0ef40426d2b45429bc407b6e","status":"publish","type":"post","link":"https:\/\/www.aoyint.com\/english\/01a7f72f0ef40426d2b45429bc407b6e.html","title":{"rendered":"\u4eceCD\u5230DAC\u7684\u5c0f\u79d8\u5bc6"},"content":{"rendered":"<p style=\"text-align: left\"><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\"><span style=\"font-family: 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center\"><img src=\"http:\/\/www.aoyint.com\/wp-content\/uploads\/2020\/03\/frc-f11881ae8a763064c12e42ca897078c4.png\" alt=\"\u3010\u70e7\u53cb\u5206\u4eab\u3011\u4eceCD\u5230DAC\u7684\u5c0f\u79d8\u5bc6\" \/><\/p>\n<p style=\"text-align: left\"><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\"><span style=\"font-family: 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style=\"text-align: center\"><img src=\"http:\/\/www.aoyint.com\/wp-content\/uploads\/2020\/03\/frc-43db9140da4733691c44420196ebf3ad.png\" alt=\"\u3010\u70e7\u53cb\u5206\u4eab\u3011\u4eceCD\u5230DAC\u7684\u5c0f\u79d8\u5bc6\" \/><\/p>\n<p style=\"text-align: left\"><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\">\u00a0<\/span><\/p>\n<p style=\"text-align: left\"><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\"><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1\">\u7edd\u5927\u591a\u6570<\/span>CD\u5531\u76d8\u3001DAC\u3001\u624b\u673a\u3001\u7535\u8111\u3001ipad&#8230;\u8fd9\u5f0f\u5404\u6837\u7684\u97f3\u4e50\u64ad\u653e\u8f6f\u786c\u4ef6\u6700\u540e\u90fd\u6709\u8fd9\u6837\u4e00\u4e2aDAC IC\uff0c\u6709\u4e9b\u5219\u662f\u5c06\u8fd9\u4e2a\u4e5f\u5305\u8fdb\u4e86\u4e3bIC\uff0c\u6570\u5b57\u8baf\u53f7\u5c31\u662f\u7531\u8fd9\u4e2aIC\u8f6c\u6210\u6a21\u62df\u8baf\u53f7\uff1b\u5148\u770b\u5de6\u8fb95, 6, 7\u811a\uff0c\u8fd9\u4e09\u4e2a\u6784\u6210\u540d\u4e3aI2S\u7684\u6570\u5b57\u97f3\u4e50\u8baf\u53f7\u754c\u9762\uff0c\u6570\u5b57\u97f3\u4e50PCM\u7801\u5c31\u662f\u7531\u8fd9\u4e09\u53ea\u811a\u9001\u8fc7\u6765\uff1b\u53e6\u5916\u8fd8\u6709\u7b2c3\u811a master clock\uff0c\u8fd9\u662fIC\u5185\u90e8\u7684\u5de5\u4f5c\u9891\u7387\u65f6\u949f\u3002<\/span><\/p>\n<p style=\"text-align: left\"><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\">\u00a0<\/span><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\"><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1\">\u6b63\u5e38\u5de5\u4f5c\u7684<\/span>DAC\uff0c\u8fd9\u6570\u5b57\u754c\u9762\u56db\u53ea\u811a\u8baf\u53f7\u90fd\u80fd\u8ba9\u58f0\u97f3\u5f88\u6b63\u5e38\u7684\u5531\u51fa\u6765\uff0c\u4e5f\u5c31\u662f\u5f88\u7a33\u5b9a\u4e0d\u95f4\u65ad\u8fde\u7eed\u7684\u8f6c\u6362\u6210\u6a21\u62df\u7535\u538b\u8baf\u53f7\u8f93\u51fa\uff1b\u4f46\uff0c\u8fd9\u53ea\u662f\u8868\u9762\u4e0a\u54ea&#8230;\u5c31\u50cf\u4f60\u5531\u6b4c\uff0c\u6709\u65f6\u5019\uff0c\u6362\u6c14\u4e0d\u987a\u4f1a\u6296\uff5e<\/span><\/p>\n<p style=\"text-align: left\"><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\">\u00a0<\/span><\/p>\n<p style=\"text-align: center\"><img src=\"http:\/\/www.aoyint.com\/wp-content\/uploads\/2020\/03\/frc-113d62707b4abea7f1ae422db9932544.png\" alt=\"\u3010\u70e7\u53cb\u5206\u4eab\u3011\u4eceCD\u5230DAC\u7684\u5c0f\u79d8\u5bc6\" \/><\/p>\n<p style=\"text-align: left\"><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\">I2S\u548cmaster clock\u8fd9\u6570\u5b57\u754c\u9762\u5171\u4e8c\u4e2aclock\u65f6\u949f\u8baf\u53f7\uff0c\u8fd9clock\u82e5\u662f\u6296\uff0c\u5c31\u50cf\u4f60\u5531\u6b4c\u65f6\u6296\u4e00\u822c\uff0c\u5531\u51fa\u6765\u7684\u97f3\u4e50\u5f53\u7136\u4e5f\u4f1a\u6296\u56c9\uff5eclock\u7528\u6765\u9a71\u52a8DAC\u5de5\u4f5c\uff0c\u5c31\u8c61\u662f\u8d5b\u8dd1\u65f6\u9e23\u67aa\uff01\u8d77\u8dd1\uff01<\/span><\/p>\n<p style=\"text-align: left\"><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\">\u00a0<\/span><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\">clock\u5c31\u662f\u90a3\u67aa\u58f0\uff0c\u6570\u5b57\u8d44\u6599\u5c31\u662f\u90a3\u8dd1\u8005\uff1b\u4eba\u8033\u633a\u591a\u80fd\u660e\u786e\u8fa8\u8ba4\u4e00\u79d2\u6296\u4e2a\u51e0\u6b21\u8fd9\u79cd\uff0c\u51e0\u5341\u6b21\u4ee5\u4e0a\u5c31\u65e0\u6cd5\u660e\u786e\u77e5\u9053\u6709\u5728\u6296\u4e86\uff0c\u4f55\u51b5\u4e00\u79d2\u51e0\u5343\u6b21\u7684\u6296\u6cd5\u54ea&#8230;\u8fd9clock\u9891\u7387\u81f3\u5c11\u662f44100Hz\u3002\u4f46\u662f\uff0c\u4e0d\u540c\u6296\u6cd5\u4e4b\u95f4\uff0c\u4eba\u8033\u5176\u5b9e\u80fd\u660e\u786e\u8fa8\u8ba4\u51fa\u4e0d\u540c\uff01\u6296\u7684\u8d8a\u5c11\uff0c\u542c\u6765\u8d8a\u662f\u5e72\u51c0\u6e05\u6670\u81ea\u7136\u3002\u65e9\u671fCD\u5531\u76d8\u521a\u51fa\u73b0\u65f6\u4eba\u4eba\u8bb6\u5f02\u5176\u6e05\u6670\uff0c\u6e10\u6e10\u7684\u53d1\u73b0\u6709\u4e9b\u4e0d\u5bf9\u52b2\uff0c\u5c31\u662f\u8fd9\u4e48\u4e00\u56de\u4e8b\u3002\u8fd9clock\u6296\uff0c\u5c31\u79f0\u4e3ajitter\uff0c\u4e3b\u8981\u5f71\u54cd\u662f\u6781\u9ad8\u9891\u3001\u97f3\u50cf\u3001\u97f3\u573a\u3001\u5fae\u5fae\u7684\u5435\u523a\u3002<\/span><\/p>\n<p style=\"text-align: left\"><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\">\u00a0<\/span><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\"><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1\">\u6709\u65f6\u5019\uff0c\u4f60\u8fb9\u5531\u6b4c\u8fb9\u8df3\u821e\uff0c\u4e0a\u6c14\u4e0d\u63a5\u4e0b\u6c14<\/span>&#8230;DAC\u5de5\u4f5c\u65f6\uff0c\u7535\u6e90\u82e5\u662f\u4e0d\u5e72\u51c0\uff0c\u4e5f\u662f\u8fd9\u822c\u73b0\u8c61\uff1b\u7535\u6e90\u6709\u6570\u5b57\u7535\u6e90\u3001\u7c7b\u6bd4\u7535\u6e90\uff0c\u6570\u5b57\u7535\u6e90\u4e0d\u5e72\u51c0\uff0c\u4e5f\u4f1a\u9020\u6210jitter\uff1b\u50cf\u662f\u4f60\u5728\u8d77\u8dd1\u7ebf\u51c6\u5907\u597d\u7b49\u67aa\u58f0\uff0c\u563f\uff0c\u504f\u504f\u8fd9\u65f6\u98de\u673a\u547c\u5578\u800c\u8fc7\uff0c\u542c\u4e0d\u6e05\u695a&#8230;<\/span><\/p>\n<p style=\"text-align: left\"><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\">\u00a0<\/span><\/p>\n<p style=\"text-align: center\"><img src=\"http:\/\/www.aoyint.com\/wp-content\/uploads\/2020\/03\/frc-f11881ae8a763064c12e42ca897078c4.png\" alt=\"\u3010\u70e7\u53cb\u5206\u4eab\u3011\u4eceCD\u5230DAC\u7684\u5c0f\u79d8\u5bc6\" \/><\/p>\n<p style=\"text-align: left\"><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\"><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1\">\u56e0\u4e3a\u6570\u5b57\u7684\u5224\u5b9a\u662f\u9ad8\u4e8e\u67d0\u4e2a\u7535\u538b\u7b97\u662f<\/span>1\uff0c\u4f4e\u4e8e\u67d0\u4e2a\u7535\u538b\u7b97\u662f0\uff0c\u800c\u8fd9\u67d0\u4e2a\u7535\u538b\u4e0e\u7535\u6e90\u7535\u538b\u6709\u5173\uff1bclock\u7531\u4f4e\u5f80\u9ad8\u51b2\u65f6\uff0c\u5c31\u7b97clock\u518d\u51c6\u6ce2\u5f62\u518d\u6f02\u4eae\uff0c\u7535\u6e90\u7535\u538b\u6296\uff0c\u6bcf\u6b21\u5224\u5b9a\u67aa\u58f0\u54cd\u7684\u7535\u538b\u7535\u538b\u90fd\u4e0d\u540c\uff0c\u7ed3\u679c\u5f53\u7136\u4e5f\u662f\u6296\uff0c\u4e5f\u5c31\u5192\u51fajitter\u6765\u56c9\uff5e<\/span><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\">\u00a0<\/span><\/p>\n<p style=\"text-align: left\"><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\"><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1\">\u6a21\u62df\u7535\u6e90\u4e0d\u5e72\u51c0\uff0c\u5c31\u8c61\u662f\u4f60\u7ad9\u5728\u4e2a\u6296\u52a8\u7684\u53f0\u4e0a\u5531\u6b4c\uff0c\u53f0\u4e0b\u7684\u4eba\u542c\u6765\u4e5f\u662f\u6296\u554a\uff5e\u53f0\u600e\u4e48\u6296\uff0c\u53d1\u51fa\u6765\u7684\u58f0\u97f3\u5c31\u4f1a\u6709\u8fd9\u6296\u6cd5\u4e0e\u97f3\u4e50\u7684<\/span>inter-modulation\uff0cjitter\u7684\u6296\u6cd5\u4e5f\u662f\u7c7b\u4f3c\u6548\u5e94\uff0c\u53ea\u662f\u9891\u7387\u9ad8\u5f88\u591a\u3002<\/span><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\">\u7efc\u5408\u4ee5\u4e0a\uff0c\u8981\u8ba9<\/span><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\">DAC\u5531\u7684\u597d\uff0c\u5c31\u662f\u7ed9\u5b83\u7cbe\u51c6\u7684clock\u4e0e\u5e72\u51c0\u7684\u7535\u6e90\uff0c\u5982\u6b64\u800c\u5df2\u3002<\/span><\/p>\n<p style=\"text-align: left\"><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\">\u00a0<\/span><\/p>\n<p style=\"text-align: center\"><img src=\"http:\/\/www.aoyint.com\/wp-content\/uploads\/2020\/03\/frc-77c0f081216d667ffabed10e5dddc383.jpeg\" alt=\"\u3010\u70e7\u53cb\u5206\u4eab\u3011\u4eceCD\u5230DAC\u7684\u5c0f\u79d8\u5bc6\" \/><\/p>\n<p style=\"text-align: left\"><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\"><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1\">\u90a3\uff0c\u524d\u9762\u63d0\u5230\u8bf4\u4e3a\u4f55\u7528\u7535\u8111\u5531<\/span>AIFF\u548cALAC\u6863\u542c\u6765\u4f1a\u4e0d\u540c\u5462\uff1f<\/span><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\">\u6211\u4eec\u53ef\u4ee5\u60f3\u60f3\uff0c\u8fd9\u4e8c\u8005\u5230\u5e95\u5dee\u5728\u54ea\uff1f<\/span><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\">ALAC\u4f1a\u88ab\u8f6c\u6210PCM\u7801\uff0cAIFF\u91cc\u9762\u4e5f\u662fPCM\u7801\uff0c\u6700\u540e\u9001\u5230DAC\u90fd\u662f\u76f8\u540c\u7684\u8d44\u6599\uff1b<\/span><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\">\u8d44\u6599\u6ca1\u5dee\u5f02\uff0c\u90a3\u5dee\u5f02\u5c31\u5728\u5c31\u662fclock\u4e0e\u7535\u6e90\u4e86\uff1b<\/span><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\">\u8bfbAIFF vs \u8bfbALAC\u5dee\u5728\u54ea\uff1f<\/span><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\">\u5dee\u5728ALAC\u8fd8\u5f97\u89e3\u538b\u7f29\uff0cCPU\u6bd4\u8f83\u5fd9\uff0c\u5c31\u50cf\u4f60\u8fb9\u8df3\u821e\u8fb9\u5531\u6b4c\u6c14\u4f1a\u5598\u554a\uff0cCPU\u4e00\u5fd9\uff0c\u5c31\u5403\u6389\u5927\u91cf\u7535\uff0c\u7535\u6e90\u6ce2\u52a8\u5c31\u5927\uff0c\u566a\u58f0\u5c31\u591a\uff0c\u4e0d\u5e72\u51c0\uff0cDAC\u5531\u51fa\u6765\u4e0d\u5c31\u6709\u5dee\u5f02\uff1f<\/span><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\">\u4e0d\u4fe1\u4f60\u5c06ALAC\u5148\u8f6c\u6210AIFF\uff0c\u4e8c\u4e2aAIFF\u6863\u6848\u5206\u522b\u5b58\u5728\u4e8c\u53ea\u521aformat\u7684\u540c\u6b3e\u968f\u8eab\u789f\u91cc\uff0c\u63d2\u5728\u540c\u4e00\u4e2aUSB port\u5531\u770b\u770b\u6709\u6ca1\u6709\u5dee\uff1f<\/span><\/p>\n<p style=\"text-align: left\"><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\">\u00a0<\/span><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\">\u4eba\u5ba2\u554a\uff5e\u6ca1\u90a3\u4e48\u7384\u5566\uff5e\u6570\u5b57\u5c31\u662f\u6570\u5b57\uff0c\u51fa\u9519\u673a\u7387\u6781\u4f4e\uff0c\u91cd\u70b9\u90fd\u5728\u6a21\u62df\u5566\uff5e<\/span><\/p>\n<p style=\"text-align: center\"><img src=\"http:\/\/www.aoyint.com\/wp-content\/uploads\/2020\/03\/frc-cd6d99762be67539454e142592491cef.png\" alt=\"\u3010\u70e7\u53cb\u5206\u4eab\u3011\u4eceCD\u5230DAC\u7684\u5c0f\u79d8\u5bc6\" \/><\/p>\n<p style=\"text-align: left\"><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\">\u00a0<\/span><\/p>\n<p style=\"text-align: left\"><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\">\u90a3\uff0c\u5b9e\u9645\u4e0a\u8be5\u600e\u6837\u505a\u6700\u597d\u5462\uff1f<\/span><\/p>\n<p style=\"text-align: left\"><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\"><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1\">\u7531\u4ee5\u4e0a\u7684\u8ba8\u8bba\uff0c\u91cd\u70b9\u5728\uff0c\u5c3d\u53ef\u80fd\u8ba9<\/span>DAC\u7684clock\u51c6\u3001\u7535\u6e90\u5e72\u51c0\uff1b\u76ee\u524d\u8ba4\u771f\u7684\u4e50\u8ff7\u8be5\u90fd\u662f\u4ee5\u8ba1\u7b97\u673a\u50a8\u5b58\u97f3\u4e50\uff08\u5bb9\u91cf\u624d\u591f\u554a\uff5e\uff09\uff0c\u518d\u9001\u7ed9DAC\u5531\u51fa\u6765\uff1b\u56e0\u6b64\uff0c\u8be5\u5c3d\u91cf\u8ba9DAC\u4e0d\u53d7\u8ba1\u7b97\u673a\u5e72\u6270\uff0c<\/span><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\">DAC\u6700\u597d\u7684\u5f62\u5f0f\uff0c\u8be5\u662f\u7528Ethernet\u6216WiFi\u754c\u9762\uff0c\u4e0e\u8ba1\u7b97\u673a\u5b8c\u5168\u9694\u7edd\u65e0\u76f4\u63a5\u63a5\u89e6\uff0c\u4e0d\u8fc7\u8fd9\u7c7b\u578b\u4ea7\u54c1\u4e0d\u591a\uff0c\u4e2a\u522b\u673a\u79cd\u8d28\u91cf\u53c8\u662f\u53e6\u4e00\u56de\u4e8b\uff1b<\/span><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\">\u6700\u666e\u904d\u7684\u8be5\u662fUSB\u754c\u9762\uff0c\u8fd9\u5f53\u7136\u5f97\u6311\u8dd1asynchronous\u5f02\u6b65\u7684\uff0c\u6700\u597d\u8fd8\u52a0\u4e0aUI1\u6216UF1\u9694\u79bb\/\u6ee4\u9664\u5730\u7ebf\u566a\u58f0\u3002<\/span><\/p>\n<p style=\"text-align: left\"><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\">\u00a0<\/span><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\"><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1\">\u81f3\u4e8e\u6446\u5728\u8ba1\u7b97\u673a\u91cc\u9762\u7684\u5462<\/span>&#8230;\u4f60\u60f3\uff0c\u8ba1\u7b97\u673a\u7684\u7535\u6e90\u6a21\u5757\u624d\u5356\u90a3\u4e48\u70b9\u4ef7\u683c\uff0c\u600e\u4e48\u4f1a\u5e72\u51c0\u5462\uff1f\u5c31\u7b97\u518d\u8d35\uff0c\u5355\u662fCPU\u5ffd\u5fd9\u5ffd\u53d1\u5446\uff0c\u51e0\u5341W\u529f\u7387\u8fd9\u6837\u53d8\u6765\u53d8\u53bb\uff0c\u7535\u6e90\u4f1a\u5e72\u51c0\u5417\uff1f\u8001\u8bdd\u4e00\u53e5\uff0c\u8ba1\u7b97\u673a\u4e0d\u662f\u4e13\u7528\u6765\u5531\u97f3\u4e50\u7684\uff0c\u522b\u8981\u6c42\u5b83\u7535\u6e90\u5e72\u51c0\uff0c\u8be5\u5229\u7528\u5176\u8d85\u4f4e\u4ef7\u8d85\u5927\u5bb9\u91cf\u8fd9\u4f18\u70b9\uff0c\u53e6\u5916\u7528\u597dDAC\u641e\u5b9a\u97f3\u54cd\u7684\u4e8b\u3002<\/span><\/p>\n<p style=\"text-align: left\"><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\">\u00a0<\/span><\/p>\n<p style=\"text-align: center\"><img src=\"http:\/\/www.aoyint.com\/wp-content\/uploads\/2020\/03\/frc-a1af91733c449ac457efc1940ef00fce.jpeg\" alt=\"\u3010\u70e7\u53cb\u5206\u4eab\u3011\u4eceCD\u5230DAC\u7684\u5c0f\u79d8\u5bc6\" \/><\/p>\n<p style=\"text-align: left\"><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\"><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1\">\u90a3\uff0c<\/span>CD\u5531\u76d8\u8fd9\u79cd\u5f62\u5f0f\u5462\uff1f\u5565\uff1f\u4f60\u8fd8\u5728\u7528\uff1f\u597d\u5427\uff0c\u539f\u8c05\u4f60\u5e74\u7eaa\u5927\u4e86&#8230;<\/span><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\">CD\u5531\u76d8\u91cc\u9762\u4e5f\u6709\u4e2a\u8f6c\u52a8\u7684\u8f6c\u76d8\u5427\uff1f<\/span><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\">\u4f60\u6709\u6ca1\u6709\u770b\u8fc7\u8fd9\u8f6c\u76d8\u8f6c\u7684\u65f6\u5019\uff1f<\/span><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\">\u6296\u6296\u6296&#8230;\u8d85\u4e25\u91cd&#8230;\u5f53\u5e74\u9ad8\u500d\u6570\u7684CD ROM\u8f6c\u8d77\u6765\u65f6\uff0c\u90a3\u771f\u662f&#8230;\u8fde\u684c\u5b50\u90fd\u4f1a\u8ddf\u7740\u6296\u554a&#8230;\u4f60\u60f3\uff0c\u5403\u7535\u5f88\u91cd\u7684\u9a6c\u8fbe\u8fd9\u6837\u6296\uff0c\u4f1a\u4e0d\u4f1a\u5f71\u54cd\u7535\u6e90\uff1f<\/span><\/p>\n<p style=\"text-align: left\"><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\"><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1\">\u4f60\u53ef\u4ee5\u8bd5\u8bd5\u770b\uff0c\u542c<\/span>CD\u7247\u7b2c\u4e00\u66f2\u548c\u6700\u540e\u4e00\u66f2\u6709\u5565\u5dee\u522b\uff1f\u66f4\u7cbe\u51c6\u70b9\uff0c\u70e7\u4e00\u5f20CD\u7247\uff0c\u91cc\u9762\u5168\u90fd\u662f\u540c\u4e00\u9996\u6b4c\uff0c\u518d\u542c\u7b2c\u4e00\u66f2\u548c\u6700\u540e\u4e00\u66f2\u7684\u5dee\u522b&#8230;\u6709\u4eba\u95ee\u5230\u8ba1\u7b97\u673a\u4e0a\u7684\u4e0d\u540c\u8f6f\u4ef6\u5bf9\u58f0\u97f3\u7684\u5f71\u54cd\uff0c\u9996\u5148\uff0c\u8be5\u5148\u95ee\uff0c\u8fd9\u8f6f\u4ef6\u662f\u5426\u4f1a\u52a8\u5230\u8d44\u6599\uff1f\u5982\u679c\u8bbe\u5b9a\u90fd\u6b63\u786e\uff0cMac\u4e0a\u7684\u8f6f\u4ef6\u5f88\u5bb9\u6613\u505a\u5230\u4e0d\u66f4\u52a8\u8d44\u6599\uff0c\u9876\u591a\u662finterger 16 bits\u8f6c\u6210floating point 32 bits\uff08Mac OS API\u6807\u51c6\u58f0\u97f3\u8d44\u6599\u4f20\u9012\u683c\u5f0f\uff09\u8fd9\u7c7b\u7684\uff1b\u6709\u4e9b\u8f6f\u4ef6\u5982Aramara\u4f1a\u52a0\u6599\uff0c\u52a0\u4e9bdither\u4e4b\u7c7b\u7684\uff0c\u8fd9\u79cd\u5c31\u4e0d\u8c08\u4e86\uff0c\u5355\u662f\u8c08\u4e0d\u52a8\u8d44\u6599\u7684\uff0c\u5982iTunes\u3001JRiver\u3001Quicktime\uff1b\u81f3\u4e8ePC\u4e0a\u561b\uff0c\u90a3\u5c31\u6709\u70b9\u9ebb\u70e6\uff0c\u5982\u679c\u8fd9\u8f6f\u4ef6call DirectShow API\u5c31\u4f1a\u7ecf\u8fc7K mixer\uff0c\u4efb\u4f55\u8d44\u6599\u90fd\u4f1a\u88ab\u8f6c\u621048KHz sampling rate\uff0c\u8fd9\u8d44\u6599\u5c31\u52a8\u8fc7\u4e86\uff0c\u5f97\u7528WASAPI\u4e4b\u7c7b\u7684\u907f\u514d\uff0c\u53cd\u6b63\u8fd8\u662f\u6709\u62db\u6570\uff0c\u7528\u5bf9\u8f6f\u4ef6\u8fd8\u662f\u80fd\u641e\u5b9a\u786e\u4fdd\u8d44\u6599\u4e0d\u4f1a\u88ab\u52a8\u5230\u3002<\/span><\/p>\n<p style=\"text-align: left\"><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\">\u00a0<\/span><\/p>\n<p style=\"text-align: center\"><img src=\"http:\/\/www.aoyint.com\/wp-content\/uploads\/2020\/03\/frc-10d813224a95a3d76de07ce0a85791c4.png\" alt=\"\u3010\u70e7\u53cb\u5206\u4eab\u3011\u4eceCD\u5230DAC\u7684\u5c0f\u79d8\u5bc6\" \/><\/p>\n<p style=\"text-align: left\"><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\">\u90a3\uff0c\u600e\u4e48\u9a8c\u8bc1\u8fd9\u70b9\uff1f<\/span><\/p>\n<p style=\"text-align: left\"><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\"><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1\">\u633a\u7b80\u5355\uff0c\u5c31\u8f93\u51fa\u518d\u8f93\u51fa\uff0c\u4e0e\u539f\u59cb\u6863\u6bd4\u8f83\u5c31\u641e\u5b9a\u5566\uff5e\u6570\u5b57\u5c31\u662f\u8fd9\u6837\u5f88\u5bb9\u6613\u9a8c\u8bc1\uff1b\u53bb\u6293\u4e2a<\/span>virtual sound device\u6765\u704c\uff0c\u8ba9\u64ad\u653e\u8f6f\u4ef6\u8f93\u51fa\u5230\u90a3\u4e2avirtual device\uff0c\u5b58\u6863\uff0c\u4e0e\u539f\u59cb\u6863\u5bf9\u7167\u5c31\u77e5\uff1b\u51e0\u5e74\u524d\u6211\u7684\u4f5c\u6cd5\u662f\u7528\u5149\u7ea4\u8f93\u51faloopback\u62c9\u56de\u6765\uff1b\u5f53\u7136\u8fd9\u8fd8\u662f\u5f97\u5148\u5bf9\u9f50\u4e8c\u4e2a\u6863\u6848\uff0c\u8fd8\u6709\u4e00\u70b9\u53ef\u80fd\u7684\u8bef\u5dee\u5c31\u662f\u90a3\u4e2ainterger\u8f6cfloating point\u7684\u5206\u8fa8\u7387\u5dee\uff0c\u56e0\u6b64\u6bd4\u8f83\u597d\u7684\u9a8c\u8bc1\u6cd5\u662f\u4e8c\u4e2a\u6863\u6848\u90fd\u6293\u8fdb\u58f0\u97f3\u7f16\u8f91\u8f6f\u4ef6\uff0c\u5176\u4e00\u53cd\u5411\uff0c\u518d\u4e8c\u8005mix\uff0c\u7ed3\u679c\u7684\u632f\u5e45\u82e5\u90fd\u4f4e\u4e8e1bit\u5c31\u6ca1\u9519\u3002<\/span><\/p>\n<p style=\"text-align: left\"><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\">\u00a0<\/span><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\"><span style=\"font-family: 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style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\"><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1\">\u4e0d\u8fc7\uff0c\u5b9e\u9645\u4e0a\u8f6f\u4ef6\u8981\u5f71\u54cd\u8fd9\u4e8c\u70b9\u5012\u8fd8\u4e0d\u96be\uff0c<\/span>buffer size\u5c31\u662f\u5176\u4e2d\u4e00\u9879\uff0c\u4ee544.1KHz\u7684\u97f3\u4e50\u6765\u8bf4\uff0c\u6bcf\u79d2\u5fc5\u987b\u900144100\u7b14sample\u7ed9DAC\uff0c\u5982\u679cbuffer size\u662f256 vs 512\uff0c\u8fd9\u9001\u7684\u9891\u7387\u5c31\u662f\u4e8c\u500d\u4e4b\u5dee\uff0c\u4ea7\u751f\u7684\u566a\u58f0\u9891\u7387\u5c31\u662f\u4e8c\u500d\u5dee\uff0c\u800c\u8ba1\u7b97\u673a\u7684\u8bbe\u8ba1\u5c31\u662f\u5c3d\u91cf\u538b\u4f4e\u6210\u672c\uff0c\u85c9\u6570\u5b57\u6297\u566a\u58f0\u80fd\u529b\u80fd\u8fc7\u5173\u53ea\u8981\u566a\u58f0\u4e0d\u8981\u5927\u5230\u8ba9\u8d44\u6599\u51fa\u9519\u5c31\u597d\uff0c\u56e0\u6b64\u8fd9\u566a\u58f0\u5f88\u5bb9\u6613\u5c31\u4f20\u5230DAC\u53bb\uff0c\u9664\u975e\u9694\u79bb\uff0c\u900f\u8fc7Ethernet\u3001WiFi\u6216\u732b\u7a9d\u7684UI1\u8fd9\u79cd\u65b9\u5f0f\u3002<\/span><\/p>\n<p style=\"text-align: left\"><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\">\u00a0<\/span><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\"><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1\">\u81f3\u4e8e\u54ea\u4e2a<\/span>buffer 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style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\">\u00a0<\/span><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\"><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1\">\u5999\u7684\u662f\uff0c<\/span>DAC2\u7684re-clocking\u7528\u7684clock\u5c31\u662fDAC2\u4e0a\u552f\u4e00\u7684clock\u6765\u6e90\uff0c\u88ab\u91cd\u9501\u91cd\u9001\u7684\u8d44\u6599\u4e5f\u662f\u7531\u6b64clock\u5bfc\u51fa\u7684clock\u4f20\u6765\u7684\uff0c\u4e8c\u8005\u5b8c\u5168\u540c\u6b65\uff1b\u90a3\uff0c\u4e3a\u4f55\u4f1a\u6539\u5584\uff1f<\/span><\/p>\n<p style=\"text-align: left\"><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\">\u540c\u6b65\u53ea\u8868\u793a\u9891\u7387\u76f8\u540c\uff0c\u53ef\u6ca1\u8bf4\u6ce2\u5f62\u4e00\u6837\u6f02\u4eae\u3002<\/span><\/p>\n<p style=\"text-align: center\"><img src=\"http:\/\/www.aoyint.com\/wp-content\/uploads\/2020\/03\/frc-113d62707b4abea7f1ae422db9932544.png\" alt=\"\u3010\u70e7\u53cb\u5206\u4eab\u3011\u4eceCD\u5230DAC\u7684\u5c0f\u79d8\u5bc6\" \/><\/p>\n<p style=\"text-align: left\"><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 16px\">\u4ee5\u6700\u9760\u8fd1<\/span><span style=\"font-family: \u5fae\u8f6f\u96c5\u9ed1;font-size: 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