{"id":288,"date":"2020-09-23T13:38:16","date_gmt":"2020-09-23T05:38:16","guid":{"rendered":"https:\/\/surroundingsound.isfrom.tw\/?p=288"},"modified":"2020-10-06T17:55:57","modified_gmt":"2020-10-06T09:55:57","slug":"smaart%e8%aa%b2%e7%a8%8b","status":"publish","type":"post","link":"https:\/\/surroundingsound.tw\/zh\/smaart%e8%aa%b2%e7%a8%8b\/","title":{"rendered":"Smaart\u8ab2\u7a0b"},"content":{"rendered":"

“\u5730\u7403\u6c38\u4e0d\u505c\u6b47\u5730\u8f49\u52d5\u3001\u96f2\u6735\u4e0d\u65b7\u5730\u98c4\u9038\u5728\u7a7a\u4e2d\uff0c
\n\u611f\u53d7\u5230\u4e00\u80a1\u529b\u91cf\u96b1\u85cf\u5728\u5176\u4e2d\uff0c<\/p>\n

\u9019\u4e09\u5929smaart\u8ab2\u7a0b\uff0c\u4e00\u5929\u4e0a\u84579\u5c0f\u6642\u7684\u8ab2\uff0c\u4e0a\u8ab2\u6642\u624b\u6253\u5b57\uff0c\u773c\u775b\u770b\u8457\u53f0\u524d\u3001\u8166\u888b\u4e0d\u65b7\u6d88\u5316\uff0c\u6bcf\u5929\u5927\u6982\u90fd\u53ea\u7761\u4e864\u5c0f\u6642\uff0c\u4e0b\u8ab2\u4e4b\u5f8c\u958b\u6703\u3001\u6574\u7406\u8a2d\u5099\u3001\u6559\u8ab2\u3001\u6559\u80b2\u8a13\u7df4\u3001\u6e2c\u8a66\u4e0a\u8ab2\u6240\u5f97\u5230\u7684\uff0c<\/p>\n

\u4f46\u7d93\u904e\u4e86\u9019\u4e09\u5929\u7684\u8ab2\u7a0b\u6d17\u79ae\uff0c\u771f\u7684\u89ba\u5f97\u975e\u5e38\u5f97\u6709\u6536\u7a6b\uff0c\u6211\u5f88\u6176\u5e78\u6211\u56e0\u70ba\u74b0\u97f3\u9019\u500b\u516c\u53f8\uff0c\u800c\u6709\u8cc7\u683c\u53c3\u52a0\u9019\u500b\u8ab2\u7a0b\uff0c\u5728\u6211\u81ea\u5df1\u5275\u7acb\u7684\u516c\u53f8\u88e1\uff0c\u6211\u8eab\u70ba\u4e00\u500b\u97f3\u63a7\uff0c\u516c\u53f8\u786c\u9ad4\u5f9e\u6a02\u5718\u8a2d\u5099\u3001\u97f3\u97ff\u8a2d\u5099\u3001\u9ea5\u514b\u98a8\uff0c\u90fd\u8981\u4e86\u89e3\uff0c\u6280\u8853\u65b9\u9762\u5fc5\u9808\u8981\u5177\u5099\u7cfb\u7d71\u3001\u6df7\u97f3\u3001\u57fa\u790e\u9304\u97f3….\u76f8\u95dc\u77e5\u8b58\uff0c\u800c\u9019\u4e09\u5929\u9664\u4e86\u66f4\u52a0\u4e86\u89e3smaart\u7684\u4f7f\u7528\uff0c\u540c\u6642\u5927\u5927\u5730\u589e\u9032\u6211\u5c0d\u65bc\u97f3\u97ff\u7cfb\u7d71\u4ee5\u53ca\u8072\u97f3\u7269\u7406\u6027\u7684\u4e86\u89e3\uff0c
\n\u8b1b\u5e2b\u70baRational Acoustics \u5275\u8fa6\u4eba-Jamie Anderson \uff0c\u89ba\u5f97\u975e\u5e38\u7684\u53b2\u5bb3\u8207\u5c0d\u4ed6\u975e\u5e38\u7684\u656c\u4f69\uff0c\u5230\u5e95Smaart\u9019\u8edf\u9ad4\u5230\u5e95\u7528\u4f86\u505a\u4ec0\u9ebc\uff1f<\/p>\n

\u5f9e\u4e00\u958b\u59cb\u4ecb\u7d39\u55ae\u4e00\u8ff4\u8def\uff08single channel)\uff0c\u53ea\u55ae\u4e00\u770binput\u6216output\uff0c\u70ba\u7d55\u5c0d\u95dc\u4fc2\uff08signal analyze)\uff0c\u53ef\u4ee5\u770b\u5230\u983b\u7387\u8207\u9707\u5e45\u7684\u95dc\u4fc2\uff08\u983b\u7387\u97ff\u61c9\u66f2\u7dda\u70baRTA\uff0c\u6700\u63a5\u8fd1\u4eba\u8033\u611f\u77e5\uff0c\u4f46\u90fd\u662f\u4ee5\u5e73\u5766\u5316\u4f86\u505a\u5224\u65b7\uff0c\u4e0d\u9700\u8981\u62d8\u6ce5\u65bc\u9ad8\u9ad8\u4f4e\u4f4e\u7684\u6ce2\u5cf0\u6ce2\u8c37\uff09\u900f\u904e\u53cd\u5411\u5085\u7acb\u8449\u8f49\u63db\uff08IFT\uff09\u5f9e\u983b\u7387\u5834\u57df\u8b8a\u6210\u6642\u9593\u5834\u57df\uff0c\u983b\u7387\u8207\u6642\u9593\u7684\u95dc\u4fc2\uff08spectrum)\uff0c\u53ef\u4ee5\u5f9espectrum\u770b\u898b\u662f\u5426\u6709\u68b3\u578b\u659c\u6ce2\uff0c\u540c\u6642\u63d0\u5230\u73fe\u5834\u4e0d\u662f\u4e00\u500b\u7121\u97ff\u5ba4\u6216\u8457\u662f\u6709\u7d93\u904e\u8072\u5b78\u8a2d\u8a08\u7684\u9304\u97f3\u5ba4\uff0c\u4e5f\u4e0d\u662f\u5be6\u9a57\u5ba4\uff0c\u5728\u73fe\u5834\u6bcf\u4e00\u500b\u89c0\u773e\u8046\u807d\u4f4d\u7f6e\u90fd\u4e0d\u4e00\u6a23\uff0c\u7576\u7136\u5230\u9054\u89c0\u773e\u8033\u88e1\u7684\u8072\u97f3\u4e5f\u4e0d\u4e00\u6a23\uff0c\u4e0d\u53ef\u80fd\u50cf\u5728\u9304\u97f3\u5ba4\u88e1\u505a\u975e\u5e38\u7d30\u7dfb\u7684\u8abf\u6574\uff0c\u56e0\u6b64\u8981\u5148\u9032\u884c\u5c0d\u65bc\u6bcf\u500b\u4e0d\u540c\u5834\u5730\u7684\u6e2c\u91cf\u8207\u4e0b\u5224\u65b7\uff0c\u800c\u8b93mixing \u7684\u5de5\u4f5c\u53ef\u4ee5\u9806\u5229\u9032\u884c\uff0c<\/p>\n

\u518d\u4f86\u63d0\u5230\u96d9\u8ff4\u8def\uff0c\u5f9e\u6e2c\u91cf\u9ea5\u514b\u98a8(measurement)\u6bd4\u5c0d\u53c3\u8003\u503c\uff08reference)\u7d93\u904e\u7cfb\u7d71\u4e4b\u5f8c\u6240\u9020\u6210\u7684\u5f71\u97ff\uff08transfer )\uff0c\u53c3\u8003\u503cdelay time\u8a2d\u7f6e\uff0c\u56e0\u70ba\u7d93\u904eFFT\u8f49\u63db\uff0c\u7522\u751f\u4e86\u6e2c\u91cf\u8207\u53c3\u8003\u8cea\u9700\u8981\u5207\u7247\u6bd4\u5c0d\uff0c\u5982\u679c\u5207\u7247\u4e00\u958b\u59cb\u6c92\u6709\u5728\u540c\u4e00\u500b\u6642\u9593\u4e0a\uff0c\u5c07\u7121\u6cd5\u7522\u751f\u6709\u6548\u6578\u503c\uff0c
\n\u6bd4\u5c0d\u53ef\u4ee5\u770b\u5230\u7a81\u6ce2\u97ff\u61c9\uff08impulse response)\u7b2c\u4e00\u500b\u6ce2\u5cf0\u7522\u751f\u7684\u6642\u9593\u3001\u4ee5\u53ca\u540c\u8cea\u6027\uff08coherence)\u5224\u65b7\u5c0d\u65bc\u6bd4\u5c0d\u7d50\u679c\u7684\u5f71\u97ff\uff0c\u68b3\u578b\u659c\u6ce2\u548chouse\u904e\u591a\u7684reflections \u53ef\u80fd\u5c0e\u81f4\u540c\u8cea\u964d\u4f4e\uff0c\u9032\u800c\u9020\u6210\u6e05\u6670\u5ea6\u4e0b\u964d\uff0c\u4e86\u89e3\u76f8\u4f4d\u79fb\u53ef\u80fd\u9020\u6210\u9ad8\u983b\u6bd4\u4f4e\u983b\u65e9\u4e00\u9ede\u3001\u53ea\u8981\u662f\u7d93\u904e\u96fb\u5b50\u7d44\u5efa\u90fd\u6703\u5c0e\u81f4\u5404\u500b\u983b\u7387\u7684\u76f8\u4f4d\u5dee\uff08\u6642\u9593\u5dee\uff09\u3001\u5982\u4f55\u5f97\u77e5\u6975\u6027\u70ba180\u5ea6\u53cd\u5411\u3001\u8072\u6ce2\u7684\u4f4d\u7f6e\u8207\u983b\u7387\u7684\u95dc\u4fc2\uff08\u76f8\u4f4d\u97ff\u61c9\u66f2\u7dda\uff09\uff08\u5f9e\u659c\u7387\u4f86\u5224\u65b7\u6642\u9593\u5dee\u8ddd\u7684\u591a\u5be1\u3001\u5f9e\u7dda\u689d\u7684\u65b9\u5411\u4f86\u5224\u65b7\u983b\u6bb5\u7684\u8072\u6ce2\u6642\u9593\u9818\u5148\u9084\u662f\u843d\u5f8c\uff09\uff0c<\/p>\n

\u5230\u4eca\u5929\u4e5f\u662f\u8ab2\u7a0b\u7b2c\u4e09\u5929\u5177\u73fe\u5316\u68b3\u578b\u8ae7\u6ce2\uff08\u7522\u751f\u5728\u5169\u9846\u9ede\u97f3\u6e90\u5587\u5427\u4e26\u5217\u5728\u4e00\u8d77\uff09
\n\u5982\u4f55\u6b63\u78ba\u5730\u9032\u884c\u7cfb\u7d71\u6821\u6b63\uff0c\u5f9e\u6e2c\u91cf\u9ea5\u514b\u98a8\u61c9\u8a72\u8981\u64fa\u5728\u54ea\u88e1\uff0c\u7136\u5f8c\u5f9eMain L \uff08\u4e3b\u7cfb\u7d71\u5587\u5427\uff09\u3001\u524d\u5340\u88dc\u511f\u5587\u5427\uff08Front fill\uff09 \u3001\u8d85\u4f4e\u97f3\u5587\u5427\uff08SUB woofer\uff09\u3001\u5ef6\u9072\u5587\u5427\uff08delay tower) \u3001\u6bcf\u4e00\u500b\u90e8\u5206\u90fd\u8981\u7d93\u904e\u8b39\u614e\u7684\u6821\u6b63\uff0c<\/p>\n

\u300aMain L\u300b :\u5f9e\u4e0d\u540c\u7684\u4f4d\u7f6e\uff0c\u5f97\u77e5\u4e00\u500b\u983b\u7387\u97ff\u61c9\u5e73\u5747\u7d50\u679c\uff0c<\/p>\n

\u300aFront fill \u300b\uff1a\u6e2c\u5f97\u524d\u5340\u88dc\u511f\u5587\u5427\u7684\u983b\u97ff\u4e4b\u5f8c\uff0c\u4f7f\u5b83\u8ddf\u4e3b\u5587\u5427\u9707\u5e45\u76f8\u540c\uff0c\u7136\u5f8c\u4ee5\u5e73\u5766\u5316\u4f86\u5224\u65b7\u983b\u97ff\u7684\u5dee\u7570\uff0c\u6700\u5f8c\u518d\u8abf\u6574\u6975\u6027<\/p>\n

\u300aDelay tower\u300b \uff1a\u5148\u5c07\u8abf\u6574\u5b8c\u7684\u4e3b\u5587\u5427\u548c\u524d\u7f6e\u5587\u5427\uff0c\u505a\u6700\u5f8c\u7684\u76f8\u4f4d\u4ee5\u53ca\u983b\u97ff\u7684\u78ba\u8a8d\uff0c\u5224\u65b7\u662f\u5426\u76f8\u540c\uff0c\u518d\u4f86\u627e\u5230\u5ef6\u9072\u8ddfmain L \u7684\u8ef8\u7dda\u7684\u4f4d\u7f6e\uff0c\u7136\u5f8c\u5c07\u9ea5\u514b\u98a8\u4e0d\u8981\u653e\u5728\u5ef6\u9072\u5587\u5427\u8207\u4e3b\u5587\u5427\u7684\u5782\u76f4\u65b9\u5411\uff0c\u7a0d\u5fae\u504f\u79fb\u4e00\u9ede\uff0c\u7136\u5f8c\u5206\u5225\u653e\u9001piink nosie \u81f3\u4e3b\u5587\u5427\u8207\u5ef6\u9072\u5587\u5427\uff0c\u4e00\u6a23\u5148\u89e3\u6c7a\u983b\u97ff\u5dee\u7570\uff0c\u518d\u4f86\u6e2c\u5f97\u4e3b\u5587\u5427\u8207\u5ef6\u9072\u5587\u5427\u7684\u6642\u9593\uff0c\u627e\u5230\u6642\u9593\u5dee\u4e4b\u5f8c\uff0c\u52a0\u4e0a\u4e86\u5ef6\u9072\u5587\u5427\u7684\u5ef6\u9072\u6642\u9593 \uff0c\u6700\u5f8c\u5224\u65b7\u6975\u6027\u662f\u5426\u6b63\u78ba<\/p>\n

\u300aSub \u300b:\u9996\u5148\u5fc5\u9808\u5148\u627e\u5230fequence crossover\u7684\u4f4d\u7f6e\uff0c\u518d\u4f86\u8a2d\u5b9a\u4f4e\u97f3\u5ef6\u9072\uff0c\u8981\u5148\u627e\u5230\u5ef6\u9072\u6642\u9593\u4e4b\u524d\uff0c\u8df3\u5230\u7a81\u6ce2\u97ff\u61c9\u6a21\u5f0fimpulse\uff08impulse\u5c0d\u65bc\u4f4e\u97f3\u8f03\u654f\u611f\uff09\uff0c\u627e\u5230\u7b2c\u4e00\u500b\u6ce2\u5cf0\u7684\u6642\u9593\uff0c
\n\uff08sub \u7121\u6cd5\u4f7f\u7528find delay \uff0c\u56e0\u70ba\u6ce2\u9577\u592a\u9577\uff0c\u592a\u591a\u7a7a\u9593\u53cd\u5c04\u9032\u5165\uff0c\u6703\u5931\u6e96\uff09\uff0c\u9019\u6642\u9ede\u958bmain l \u7684 IR\u4f86\u5224\u65b7delay time\u70ba\u591a\u5c11\uff0c\u5224\u65b7\u7684\u662fcrossover \u7684\u9019\u500b\u983b\u7387\uff0c\u5c31\u53ef\u4ee5\u5f97\u77e5\u6642\u9593\u5dee\uff0c
\n\uff0c\u6700\u5f8c\u5224\u65b7\u6975\u6027\uff0c\u4e3b\u5587\u5427\u53cd\u5411<\/p>\n

\u300aSub\u6307\u5411\u6027\u300b\uff1a
\n1\u3001\u8d85\u4f4e\u97f3\u64fa\u4e00\u5de6\u4e00\u53f3\uff0c\u7528delay \u4f7f\u80fd\u91cf\u5f80\u5de6\u908a\u6216\u53f3\u908a\u96c6\u4e2d<\/p>\n

2\u3001\u5169\u9846\u524d\u5f8c\uff0c\u5f8c\u9762\u7684sub\u5f80\u5f8c\u4f4d\u7f6e\u64fa4\u5206\u4e4b\u4e00\u7684\u8ddd\u96e2\uff0c\u76f8\u5dee2\u5206\u4e4b\u4e00\u500d\u9031\u671f\uff08180\u5ea6\u70ba\u53cd\u5411\uff09\uff0c\u53ef\u4ee5\u5c0e\u81f4\u5f8c\u65b9\u7834\u58de\u6027\u5e72\u6d89\uff0c60-80hz\u7684\u983b\u7387\uff0c\u5c07\u524d\u9762\u7684sub\u52a0\u4e0a\u5ef6\u9072\uff0c\u4f7f\u76f8\u4f4d\u7121\u504f\u79fb\uff0c\u7528\u7834\u58de\u6027\u5e72\u6d89\u8b93\u5169\u9846\u4e00\u524d\u4e00\u5f8c\u8d85\u4f4e\u97f3\u5c0e\u81f4\u5fc3\u578b\u6307\u5411(cardioid)<\/p>\n

3\u3001\u5c07\u5169\u9846\u8d85\u4f4e\u97f3\u4e00\u524d\u4e00\u5f8c\uff0c\u8a2d\u597ddelay\u6293\u597d\u6975\u6027\u4e4b\u5f8c\uff0c\u539f\u672c\u4f4e\u97f3\u56e0\u6ce2\u9577\u9577\u5e7e\u4e4e\u7121\u65b9\u5411\u6027\u3001\u56db\u5468\u90fd\u6709\u4f4e\u983b\u80fd\u91cf\u7684\u8d85\u4f4e\u97f3\uff0c\u5c07\u5f8c\u9762\u90a3\u9846\u8d85\u4f4e\u97f3\u8a2d\u53cd\u5411\uff0c\u7d50\u679c\u662f\u5b8c\u5168\u6d88\u9664\u5f8c\u65b9\u7684\u4f4e\u97f3\u80fd\u91cf\uff0c\u80fd\u4f7f\u7121\u81fa\u4e0a\u6e1b\u5c11\u8d85\u4f4e\u983b\u7684\u5171\u632f\uff0c<\/p>\n

\u7576\u7136\u6700\u7d42smaart\u90fd\u9084\u662f\u4e00\u500b\u5de5\u5177\u800c\u5df2\uff0c\u8001\u5e2b\u4e5f\u4e0d\u65b7\u547c\u7c72\uff0c\u4e0d\u8981\u53ea\u6703\u770b\u4e0a\u9762\u7684\u7dda\u689d\uff0c\u537b\u4e0d\u6703\u53bb\u8046\u807d\uff0c\u4ed6\u53ea\u662f\u4e00\u500b\u53c3\u8003\u5de5\u5177\uff0c\u6700\u7d42\u6c7a\u5b9a\u6b0a\u9084\u662f\u56de\u5230\u81ea\u5df1\u624b\u4e0a\uff0c
\n\u5fc5\u9808\u8981\u7528\u8033\u6735\u807d\u6bcf\u4e00\u500b\u5dee\u7570\u3001\u6bcf\u4e00\u500b\u7d50\u679c\u3001\u6bcf\u4e00\u500b\u4e0b\u7684\u5224\u65b7\uff0c\u5c0d\u6211\u4f86\u8aaa\uff0c\u6211\u4e00\u5f97\u540c\u6642\u5177\u5099\u7406\u6027\u8207\u611f\u6027\uff0c\u97f3\u6a02\uff0c\u65e2\u662f\u7269\u7406\u4e5f\u662f\u85dd\u8853\u3002<\/p>\n

\u5728\u53f0\u7063\u6c92\u6709\u4e00\u500b\u5b8c\u6574\u7684\u97f3\u97ff\u7cfb\u7d71\u53ef\u4ee5\u53bb\u5b78\uff0c\u8981\u5b78\u97f3\u97ff\u4e0d\u77e5\u9053\u5f9e\u4f55\u5b78\u8d77\uff0c\u5927\u591a\u6578\u90fd\u662f\u81ea\u5b78\u3001\u6216\u8457\u76f4\u63a5\u5728\u5de5\u4f5c\u74b0\u5883\u4e2d\u5b78\u7fd2\uff0c\u50cf\u662f\u786c\u9ad4\u516c\u53f8\u6216\u8457\u662flive house\uff0c\u6211\u500b\u4eba\u662f\u89ba\u5f97\u5f88\u8271\u8f9b\uff0c<\/p>\n

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