{"id":571,"date":"2009-10-23T17:30:56","date_gmt":"2009-10-23T09:30:56","guid":{"rendered":"http:\/\/test999.eblhost.com\/blog\/?p=571"},"modified":"2010-02-26T20:46:22","modified_gmt":"2010-02-26T12:46:22","slug":"minim%ef%bc%9aaudiosource%ef%bc%88%e9%9f%b3%e6%ba%90%ef%bc%89","status":"publish","type":"post","link":"https:\/\/learn.travelchinawith.me\/?p=571","title":{"rendered":"Minim\uff1aAudioSource\uff08\u97f3\u6e90\uff09"},"content":{"rendered":"<p>[ <a href=\"http:\/\/code.compartmental.net\/minim\/javadoc\/ddf\/minim\/AudioSource.html\" target=\"_blank\">javadoc<\/a> | <a href=\"http:\/\/code.compartmental.net\/minim\/examples\/AudioSource\/\" target=\"_blank\">\u8303\u4f8b<\/a> ]<\/p>\n<p>AudioSource\u5b9a\u4e49\u4e86\u4e09\u4e2aAudioBuffer\u6210\u5458\uff0c\u540c\u65f6\u4e5f\u53ef\u6267\u884cRecordable\u548cEffectable\u754c\u9762\u3002\u4f60\u65e0\u6cd5\u76f4\u63a5\u521b\u5efa\u4e00\u4e2aAudioSource\uff0c\u5b83\u4ec5\u4ec5\u662f\u4e3aAudioPlayer, AudioSample, AudioOuput\u548cAudioInput\u63d0\u4f9b\u666e\u901a\u529f\u80fd\u800c\u5b58\u5728\u3002<\/p>\n<p><strong>\u91c7\u6837\u7f13\u51b2\u5668<\/strong><\/p>\n<p>\u4e09\u4e2a\u91c7\u6837\u7f13\u51b2\u5668\u88ab\u547d\u540d\u4e3aleft, right\u548cmix\u3002\u5b83\u4eec\u6301\u7eed\u66f4\u65b0\u5de6\u901a\u9053\uff0c\u53f3\u901a\u9053\u53ca\u5de6\u53f3\u6df7\u5408\u58f0\u9053\u7684\u97f3\u6e90\u3002\u5373\u4f7f\u5728\u64ad\u653e\u5355\u58f0\u9053\u97f3\u9891\u65f6\uff0c\u4e09\u4e2a\u901a\u9053\u90fd\u662f\u53ef\u7528\u7684\u5e76\u4e14\u5305\u542b\u540c\u6837\u7684\u91c7\u6837\u3002\u6bcf\u4e2a\u91c7\u6837\u7f13\u51b2\u5668\u90fd\u662f\u4e00\u4e2aAudioBuffer\u5bf9\u8c61\u3002<\/p>\n<p><strong>AudioBuffer: Get\u548cSize<\/strong><\/p>\n<p>\u4e24\u4e2a\u4f60\u5728AudioBuffer\u4e2d\u4f7f\u7528\u6700\u9891\u7e41\u7684\u65b9\u6cd5\u662fget(int i)\u548csize()\u3002\u65b9\u6cd5size\u8fd4\u56de\u7f13\u51b2\u5668\u7684\u957f\u5ea6\u3002\u65b9\u6cd5get\u8fd4\u56de\u91c7\u6837\u7f13\u51b2\u5668\u7b2ci\u4e2a\u91c7\u6837\u7684\u6d6e\u70b9\u503c\uff0c\u8fd9\u4e2a\u503c\u5c06\u4f1a\u5728-1~1\u7684\u8303\u56f4\u5185\u3002\u56e0\u6b64\uff0c\u8fd9\u5e38\u88ab\u8ba4\u4e3a\u662f\u4e00\u4e2a\u6807\u51c6\u5316\u7684\u6d6e\u70b9\u91c7\u6837\u3002\u4e00\u4e2a\u91c7\u6837\u5373\u5bf9\u4e00\u4e2a\u97f3\u6e90\u5728\u67d0\u4e00\u65f6\u523b\u7684\u632f\u5e45\u6d4b\u91cf\u503c\u3002\u8981\u542c\u89c1\u4e00\u4e2a\u58f0\u97f3\uff0c\u632f\u5e45\u5fc5\u987b\u65f6\u523b\u5904\u4e8e\u53d8\u5316\u3002\u6700\u7b80\u5355\u7684\u53d8\u5316\u8fa8\u8bc6\u65b9\u6ce2\uff08square wave\uff09\u3002\u65b9\u6cd5get\u5e76\u4e0d\u505a\u4efb\u4f55\u8303\u56f4\u68c0\u67e5\u3002\u56e0\u6b64\uff0c\u5982\u679c\u4f60\u8be2\u95ee\u4e00\u4e2a\u4f4d\u7f6e\u5c0f\u4e8e\u96f6\u6216\u5927\u7b49\u4e8esize\u8fd4\u56de\u503c\u7684\u91c7\u6837\uff0c\u4f60\u5c06\u4f1a\u5f97\u5230\u4e00\u4e2aArrayOutOfBounds\u7684\u9519\u8bef\u3002\u4e0b\u4f8b\u793a\u8303\u4e86\u5982\u4f55\u4f7f\u7528get\u548csize\u6765\u4e3a\u4e00\u4e2a\u97f3\u9891\u4fe1\u53f7\u7ed8\u5236\u6ce2\u5f62\u3002<\/p>\n<p><strong>\u8303\u4f8b<\/strong>\uff08<a href=\"http:\/\/code.compartmental.net\/minim\/examples\/AudioBuffer\/get\/\" target=\"_blank\">\u5728\u7ebf\u770b<\/a>\uff09<\/p>\n<pre class=\"brush:processing\">import ddf.minim.*;\r\n\r\nMinim minim;\r\nAudioPlayer groove;\r\n\r\nvoid setup()\r\n{\r\n  size(512, 200, P3D);\r\n  minim = new Minim(this);\r\n  groove = minim.loadFile(\"groove.mp3\");\r\n  groove.loop();\r\n}\r\n\r\nvoid draw()\r\n{\r\n  background(0);\r\n  stroke(255);\r\n  \/\/ \u6211\u4eec\u752850\u4e58\u4ee5\u503c\u624d\u80fd\u770b\u5230\u6ce2\u5f62\r\n  for ( int i = 0; i &lt; groove.bufferSize() - 1; i++ )\r\n  {\r\n    float x1 = map(i, 0, groove.bufferSize(), 0, width);\r\n    float x2 = map(i+1, 0, groove.bufferSize(), 0, width);\r\n    line(x1, height\/4 - groove.left.get(i)*50, x2, height\/4 - groove.left.get(i+1)*50);\r\n    line(x1, 3*height\/4 - groove.right.get(i)*50, x2, 3*height\/4 - groove.right.get(i+1)*50);\r\n  }\r\n}\r\n\r\nvoid stop()\r\n{\r\n  \/\/ \u8bb0\u5f97\u5173\u95ed\u97f3\u9891\u7c7b\r\n  groove.close();\r\n  \/\/ \u8bb0\u5f97\u505c\u6b62Minim\r\n  minim.stop();\r\n\r\n  super.stop();\r\n}<\/pre>\n<p><strong>AudioBuffer\uff1aLevel\uff08\u6c34\u5e73\uff09<\/strong><\/p>\n<p>AudioBuffer\u7684\u65b9\u6cd5level\u8fd4\u56de\u5f53\u524d\u7f13\u51b2\u5668\u7684\u97f3\u91cf\u6c34\u5e73\u3002\u8fd9\u4e2a\u503c\u5c06\u59cb\u7ec8\u5904\u4e8e0~1\u4e4b\u95f4\uff0c\u4f46\u4f60\u53ef\u80fd\u4f1a\u53d1\u73b0\u8fd4\u56de\u7684\u503c\u5e38\u6bd4\u4f60\u7684\u9884\u671f\u8981\u5c0f\u3002<\/p>\n<p><strong>\u8303\u4f8b<\/strong>\uff08<a href=\"http:\/\/code.compartmental.net\/minim\/examples\/AudioBuffer\/level\/\" target=\"_blank\">\u5728\u7ebf\u770b<\/a>\uff09<\/p>\n<pre class=\"brush:processing\">import ddf.minim.*;\r\nimport ddf.minim.signals.*;\r\n\r\nMinim minim;\r\nAudioPlayer groove;\r\n\r\nvoid setup()\r\n{\r\n  size(200, 200, P3D);\r\n  minim = new Minim(this);\r\n  groove = minim.loadFile(\"groove.mp3\");\r\n  groove.loop();\r\n  rectMode(CORNERS);\r\n}\r\n\r\nvoid draw()\r\n{\r\n  background(0);\r\n  fill(255);\r\n  \/\/ \u7ed8\u5236\u5f53\u524d\u5de6\u53f3\u91c7\u6837\u7f13\u51b2\u5668\u7684\u97f3\u91cf\u6c34\u5e73\r\n  \/\/ level()\u8fd4\u56de\u4e00\u4e2a0~1\u4e4b\u95f4\u7684\u503c, \u56e0\u6b64\u6211\u4eec\u5c06\u5b83\u653e\u5927\r\n  rect(0, height, width\/2, height - groove.left.level()*1000);\r\n  rect(width\/2, height, width, height - groove.right.level()*1000);\r\n}\r\n\r\nvoid stop()\r\n{\r\n  \/\/ \u8bb0\u5f97\u5173\u95ed\u97f3\u9891\u7c7b\r\n  groove.close();\r\n  \/\/ \u8bb0\u5f97\u505c\u6b62Minim\r\n  minim.stop();\r\n\r\n  super.stop();\r\n}<\/pre>\n<p><strong>AudioBuffer: toArray\uff08\u5230\u6570\u7ec4\uff09<\/strong><\/p>\n<p>\u7b2c\u56db\u4e2a\u4e5f\u662f\u6700\u540e\u4e00\u4e2aAudioBuffer\u53ef\u7528\u7684\u65b9\u6cd5\u662ftoArray()\u3002\u8fd9\u4e2a\u65b9\u6cd5\u4ee5\u4e00\u4e2a\u6d6e\u52a8\u6570\u7ec4\u7684\u5f62\u5f0f\u8fd4\u56de\u4e00\u4e2a\u7f13\u51b2\u5668\u5185\u503c\u7684\u526f\u672c\u3002toArray\u8fd4\u56de\u7684\u6d6e\u52a8\u6570\u7ec4\u957f\u5ea6\u5c06\u4e00\u76f4\u4e0e\u7f13\u51b2\u5668\u7684\u5927\u5c0f\u76f8\u540c\u3002\u6570\u7ec4\u5185\u7684\u503c\u4e5f\u5c06\u4e00\u76f4\u5728-1~1\u7684\u8303\u56f4\u5185\u53d8\u5316\uff0c\u9664\u975e\u4f60\u4f7f\u7528\u4e86AudioOutput\u7684\u4fe1\u53f7\u6df7\u5408\u4ea7\u751f\u4e00\u4e2a\u8d85\u8fc7\u8fd9\u4e2a\u8303\u56f4\u7684\u91c7\u6837\u503c\u3002\u5982\u679c\u90a3\u6837\u7684\u8bdd\u4f60\u5fc5\u987b\u6ce8\u610f\uff0c\u56e0\u4e3a\u8fd9\u4f1a\u4ea7\u751f\u58f0\u97f3\u7684\u5931\u771f\u3002\u4f60\u53ef\u4ee5\u7528toArray\u4e3a\u5728AudioBuffer\u5185\u7684\u97f3\u9891\u7ed8\u5236\u6ce2\u5f62\uff0c\u5e76\u4e14\u8fd9\u662f\u8fd9\u4e48\u505a\u7684\u9996\u9009\u65b9\u6cd5\u3002\u8fd9\u662f\u7531\u4e8e\u7ebf\u8def\u65b9\u9762\u7684\u539f\u56e0\u3002\u5f53\u6709\u4e00\u4e2a\u65b0\u7684\u91c7\u6837\u7f13\u51b2\u65f6\uff0c\u5b9e\u9645\u7684\u97f3\u9891\u8f93\u5165\u8f93\u51fa\u53d1\u751f\u5728\u4ed6\u81ea\u5df1\u7684\u7ebf\u8def\u4e0a\u5e76\u6700\u540e\u8fd4\u56de\u603b\u7ebf\uff08\u4f60\u7684sketch\uff09\u3002\u56e0\u6b64\uff0c\u5f53\u4f7f\u7528get\u6765\u7ed8\u5236\u6ce2\u5f62\u7684\u65f6\u5019\uff0c\u5728\u7ed8\u5236\u6ce2\u5f62\u7684\u9014\u4e2d\uff0c\u5728\u7f13\u51b2\u5668\u4e2d\u7684\u91c7\u6837\u5f88\u6709\u53ef\u80fd\u5df2\u7ecf\u6539\u53d8\u4e86\uff0c\u8fd9\u5c06\u9020\u6210\u4e00\u4e2a\u770b\u8d77\u6765\u5e76\u4e0d\u8fde\u7eed\u7684\u6ce2\u5f62\u3002\u800c\u5f53\u4f60\u4f7f\u7528toArray\u7684\u65f6\u5019\uff0c\u4f60\u7ed9\u7684\u662f\u5f53\u524d\u7f13\u51b2\u5668\u91cc\u5185\u5bb9\u7684\u526f\u672c\u5e76\u4e14\u662f\u6709\u4fdd\u969c\u7684\uff0c\u56e0\u6b64\u5728\u6574\u4e2a\u8fc7\u7a0b\u4e2d\u4e0d\u4f1a\u51fa\u73b0\u91c7\u6837\u7684\u6539\u53d8\u3002<\/p>\n<p><strong>\u8303\u4f8b<\/strong>\uff08<a href=\"http:\/\/code.compartmental.net\/minim\/examples\/AudioBuffer\/toArray\/\" target=\"_blank\">\u5728\u7ebf\u770b<\/a>\uff09<\/p>\n<pre class=\"brush:processing\">import ddf.minim.*;\r\n\r\nMinim minim;\r\nAudioPlayer groove;\r\n\r\nvoid setup()\r\n{\r\n  size(512, 200, P3D);\r\n  minim = new Minim(this);\r\n  groove = minim.loadFile(\"groove.mp3\");\r\n  groove.loop();\r\n}\r\n\r\nvoid draw()\r\n{\r\n  background(0);\r\n  stroke(255);\r\n  float[] left = groove.left.toArray();\r\n  float[] right = groove.right.toArray();\r\n  \/\/ \u6211\u4eec\u4ec5\u5faa\u73af\u81f3left.length - 1 \u56e0\u4e3a\u6211\u4eec\u6b63\u8fdb\u5165\u5faa\u73af\u5185i+1\u7684\u76ee\u5f55\r\n  for ( int i = 0; i &lt; left.length - 1; i++ )\r\n  {\r\n    float x1 = map(i, 0, groove.bufferSize(), 0, width);\r\n    float x2 = map(i+1, 0, groove.bufferSize(), 0, width);\r\n    \/\/ \u6211\u4eec\u5c06\u8fd9\u4e9b\u503c\u4e58\u4ee550\u4ee5\u66f4\u597d\u7684\u770b\u5230\u6ce2\u5f62\r\n    line(x1, height\/4 - left[i]*50, x2, height\/4 - left[i+1]*50);\r\n    line(x1, 3*height\/4 - right[i]*50, x2, 3*height\/4 - right[i+1]*50);\r\n  }\r\n}\r\n\r\nvoid stop()\r\n{\r\n  \/\/ \u8bb0\u5f97\u5173\u95ed\u97f3\u9891\u7c7b\r\n  groove.close();\r\n  \/\/ \u8bb0\u5f97\u505c\u6389Minim\r\n  minim.stop();\r\n\r\n  super.stop();\r\n}<\/pre>\n<p><strong>\u5173\u95ed\u4e00\u4e2aAudioSource<\/strong><\/p>\n<p>\u5f53\u4f60\u7528\u5b8c\u4e00\u4e2a\u5bf9\u8c61\u540e\uff0c\u4f60\u5e94\u5230\u547c\u53ebclose\u6765\u5173\u95edMinim\u91cc\u7684\u5168\u90e8\u97f3\u9891\u8f93\u5165\u8f93\u51fa\u3002\u8fd9\u4f7f\u5f97\u7528\u6765\u56de\u653e\/\u76d1\u542c\u7684\u7ebf\u8def\u5b8c\u5168\u7684\u505c\u6b62\u5e76\u91ca\u653e\u90a3\u4e2a\u7ebf\u8def\u5360\u7528\u7684\u8d44\u6e90\u3002\u4f60\u53ef\u4ee5\u5728\u9664\u65b9\u6cd5stop\u4ee5\u5916\u7684\u5176\u4ed6\u5730\u65b9\u505c\u6b62\u4e00\u4e2a\u97f3\u6e90\uff0c\u5c31\u50cf\u4f60\u5728\u4e3agroove\u914d\u7f6e\u4e00\u4e2a\u65b0\u7684\u64ad\u653e\u5668\u4e4b\u524d\u4f60\u5fc5\u987b\u547c\u53ebclose\u3002\u5982\u679c\u4f60\u4e0d\u8fd9\u4e48\u505a\uff0c\u4e0a\u4e00\u4e2a\u64ad\u653e\u5668\u7684\u7ebf\u8def\u4ecd\u5c06\u7ee7\u7eed\u6267\u884c\u800c\u4e14\u4f60\u6ca1\u6709\u529e\u6cd5\u4f7f\u5176\u505c\u6b62\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ javadoc | \u8303\u4f8b ] AudioSource\u5b9a\u4e49\u4e86\u4e09\u4e2aAudioBuffer\u6210\u5458\uff0c\u540c\u65f6\u4e5f\u53ef\u6267\u884cRecordable\u548cEffectable\u754c\u9762\u3002\u4f60\u65e0\u6cd5\u76f4\u63a5\u521b\u5efa\u4e00\u4e2aAudioSource\uff0c\u5b83\u4ec5\u4ec5\u662f\u4e3aAudioPlayer, AudioSample, AudioOuput\u548cAudioInput\u63d0\u4f9b\u666e\u901a\u529f\u80fd\u800c\u5b58\u5728\u3002 \u91c7\u6837\u7f13\u51b2\u5668 \u4e09\u4e2a\u91c7\u6837\u7f13\u51b2\u5668\u88ab\u547d\u540d\u4e3aleft, right\u548cmix\u3002\u5b83\u4eec\u6301\u7eed\u66f4\u65b0\u5de6\u901a\u9053\uff0c\u53f3\u901a\u9053\u53ca\u5de6\u53f3\u6df7\u5408\u58f0\u9053\u7684\u97f3\u6e90\u3002\u5373\u4f7f\u5728\u64ad\u653e\u5355\u58f0\u9053\u97f3\u9891\u65f6\uff0c\u4e09\u4e2a\u901a\u9053\u90fd\u662f\u53ef\u7528\u7684\u5e76\u4e14\u5305\u542b\u540c\u6837\u7684\u91c7\u6837\u3002\u6bcf\u4e2a\u91c7\u6837\u7f13\u51b2\u5668\u90fd\u662f\u4e00\u4e2aAudioBuffer\u5bf9\u8c61\u3002 AudioBuffer: Get\u548cSize \u4e24\u4e2a\u4f60\u5728AudioBuffer\u4e2d\u4f7f\u7528\u6700\u9891\u7e41\u7684\u65b9\u6cd5\u662fget(int i)\u548csize()\u3002\u65b9\u6cd5size\u8fd4\u56de\u7f13\u51b2\u5668\u7684\u957f\u5ea6\u3002\u65b9\u6cd5get\u8fd4\u56de\u91c7\u6837\u7f13\u51b2\u5668\u7b2ci\u4e2a\u91c7\u6837\u7684\u6d6e\u70b9\u503c\uff0c\u8fd9\u4e2a\u503c\u5c06\u4f1a\u5728-1~1\u7684\u8303\u56f4\u5185\u3002\u56e0\u6b64\uff0c\u8fd9\u5e38\u88ab\u8ba4\u4e3a\u662f\u4e00\u4e2a\u6807\u51c6\u5316\u7684\u6d6e\u70b9\u91c7\u6837\u3002\u4e00\u4e2a\u91c7\u6837\u5373\u5bf9\u4e00\u4e2a\u97f3\u6e90\u5728\u67d0\u4e00\u65f6\u523b\u7684\u632f\u5e45\u6d4b\u91cf\u503c\u3002\u8981\u542c\u89c1\u4e00\u4e2a\u58f0\u97f3\uff0c\u632f\u5e45\u5fc5\u987b\u65f6\u523b\u5904\u4e8e\u53d8\u5316\u3002\u6700\u7b80\u5355\u7684\u53d8\u5316\u8fa8\u8bc6\u65b9\u6ce2\uff08square wave\uff09\u3002\u65b9\u6cd5get\u5e76\u4e0d\u505a\u4efb\u4f55\u8303\u56f4\u68c0\u67e5\u3002\u56e0\u6b64\uff0c\u5982\u679c\u4f60\u8be2\u95ee\u4e00\u4e2a\u4f4d\u7f6e\u5c0f\u4e8e\u96f6\u6216\u5927\u7b49\u4e8esize\u8fd4\u56de\u503c\u7684\u91c7\u6837\uff0c\u4f60\u5c06\u4f1a\u5f97\u5230\u4e00\u4e2aArrayOutOfBounds\u7684\u9519\u8bef\u3002\u4e0b\u4f8b\u793a\u8303\u4e86\u5982\u4f55\u4f7f\u7528get\u548csize\u6765\u4e3a\u4e00\u4e2a\u97f3\u9891\u4fe1\u53f7\u7ed8\u5236\u6ce2\u5f62\u3002 \u8303\u4f8b\uff08\u5728\u7ebf\u770b\uff09 import ddf.minim.*; Minim minim; AudioPlayer groove; void setup() { size(512, 200, P3D); minim = new Minim(this); groove = minim.loadFile(&#8220;groove.mp3&#8221;); groove.loop(); } void draw() { background(0); stroke(255); \/\/ \u6211\u4eec\u752850\u4e58\u4ee5\u503c\u624d\u80fd\u770b\u5230\u6ce2\u5f62 for ( int i = 0; i &lt; groove.bufferSize() &#8211; [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[60],"tags":[61],"class_list":["post-571","post","type-post","status-publish","format-standard","hentry","category-minim","tag-minim"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/learn.travelchinawith.me\/index.php?rest_route=\/wp\/v2\/posts\/571","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/learn.travelchinawith.me\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/learn.travelchinawith.me\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/learn.travelchinawith.me\/index.php?rest_route=\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/learn.travelchinawith.me\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=571"}],"version-history":[{"count":4,"href":"https:\/\/learn.travelchinawith.me\/index.php?rest_route=\/wp\/v2\/posts\/571\/revisions"}],"predecessor-version":[{"id":573,"href":"https:\/\/learn.travelchinawith.me\/index.php?rest_route=\/wp\/v2\/posts\/571\/revisions\/573"}],"wp:attachment":[{"href":"https:\/\/learn.travelchinawith.me\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=571"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/learn.travelchinawith.me\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=571"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/learn.travelchinawith.me\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=571"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}