{"id":1426,"date":"2017-12-19T20:27:35","date_gmt":"2017-12-19T11:27:35","guid":{"rendered":"https:\/\/www.utsbox.com\/?p=1426"},"modified":"2018-07-24T22:36:14","modified_gmt":"2018-07-24T13:36:14","slug":"%e3%82%a8%e3%83%95%e3%82%a7%e3%82%af%e3%82%bf%e3%83%bc%e3%81%ae%e7%b0%a1%e5%8d%98%e3%81%aa%e5%ae%9f%e8%a3%85%e4%be%8b-%e3%82%aa%e3%83%bc%e3%83%90%e3%83%bc%e3%83%89%e3%83%a9%e3%82%a4%e3%83%96","status":"publish","type":"post","link":"https:\/\/www.utsbox.com\/?p=1426","title":{"rendered":"\u30a8\u30d5\u30a7\u30af\u30bf\u30fc\u306e\u7c21\u5358\u306a\u5b9f\u88c5\u4f8b \u2013 \u30aa\u30fc\u30d0\u30fc\u30c9\u30e9\u30a4\u30d6\u30fb\u30c7\u30a3\u30b9\u30c8\u30fc\u30b7\u30e7\u30f3"},"content":{"rendered":"

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\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u3068\u3057\u3066\u4e0b\u8a18\u304c\u3088\u304f\u5229\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n\n
\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc<\/th>\n\u610f\u5473<\/th>\n\u3060\u3044\u305f\u3044\u306e\u7bc4\u56f2<\/th>\n<\/tr>\n
\u30b2\u30a4\u30f3<\/td>\n\u5165\u529b\u4fe1\u53f7\u306e\u5897\u5e45\u91cf<\/td>\n10\uff5e300\u500d\u7a0b\u5ea6(dB\u63db\u7b97\u306720dB\uff5e50dB\u7a0b\u5ea6)<\/td>\n<\/tr>\n
\u30dc\u30ea\u30e5\u30fc\u30e0<\/td>\n\u51fa\u529b\u4fe1\u53f7\u306e\u97f3\u91cf<\/td>\n0\uff5e1\u306e\u7bc4\u56f2<\/td>\n<\/tr>\n<\/table>\n

\u5b9f\u88c5\u306f\u5165\u529b\u4fe1\u53f7\u306b\u30d5\u30a3\u30eb\u30bf\u3092\u639b\u3051\u3001\u30b2\u30a4\u30f3\u3067\u5897\u5e45(\u4e57\u7b97)\u3057\u305f\u3042\u3068\u632f\u5e45\u306e\u6700\u5927\u5024\u30fb\u6700\u5c0f\u5024\u3092\u8d85\u3048\u305f\u3082\u306e\u3092\u305d\u308c\u305e\u308c\u6700\u5927\u5024\u30fb\u6700\u5c0f\u5024\u306b\u5408\u308f\u305b\u307e\u3059\u3002
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\u3010\u5b9f\u88c5\u30a4\u30e1\u30fc\u30b8\u3011
\n[crayon]
\nvoid distortion(float inL[], float inR[], float outL[], float outR[], int wavelength)
\n{
\n\t\/\/ inL[]\u3001inR[]\u3001outL[]\u3001outR[]\u306f\u305d\u308c\u305e\u308c\u5165\u529b\u4fe1\u53f7\u3068\u51fa\u529b\u4fe1\u53f7\u306e\u30d0\u30c3\u30d5\u30a1(\u5de6\u53f3)
\n\t\/\/ wavelenght\u306f\u30d0\u30c3\u30d5\u30a1\u306e\u30b5\u30a4\u30ba\u3001\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u5468\u6ce2\u6570\u306f44100Hz\u3068\u3059\u308b<\/p>\n

\t\/\/ \u30a8\u30d5\u30a7\u30af\u30bf\u30fc\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc
\n\tfloat gain = 300.0f; \/\/ \u5897\u5e45\u91cf\u300210\uff5e300\u7a0b\u5ea6(dB\u63db\u7b97\u306720dB\uff5e50dB\u7a0b\u5ea6)
\n\tfloat volume = 0.3f; \/\/ \u51fa\u529b\u4fe1\u53f7\u306e\u97f3\u91cf\u30020.0\uff5e1.0\u306e\u7bc4\u56f2<\/p>\n

\t\/\/ \u5185\u90e8\u5909\u6570
\n\tCMyFilter highpassL,highpassR; \/\/ \u30d5\u30a3\u30eb\u30bf\u30fc\u30af\u30e9\u30b9(https:\/\/www.utsbox.com\/?page_id=728 \u3088\u308a)<\/p>\n

\t\/\/ \u9ad8\u97f3\u57df\u306e\u307f\u901a\u3059(\u4f4e\u97f3\u57df\u3092\u30ab\u30c3\u30c8\u3059\u308b)\u30d5\u30a3\u30eb\u30bf\u8a2d\u5b9a(\u5de6\u53f3\u5206)
\n\t\/\/ \u30ab\u30c3\u30c8\u3059\u308b\u5468\u6ce2\u6570\u306e\u76ee\u5b89\u306f20Hz\uff5e300Hz\u7a0b\u5ea6
\n\t\/\/ \u5897\u5e45\u91cf\u304c\u5927\u304d\u304f\u306a\u308c\u3070\u3001\u30ab\u30c3\u30c8\u30aa\u30d5\u5468\u6ce2\u6570\u3082\u5927\u304d\u304f\u3059\u308b\u3068\u3088\u3044
\n\thighpassL.HighPass(200.0f, 1.0f \/ sqrt(2.0f));
\n\thighpassR.HighPass(200.0f, 1.0f \/ sqrt(2.0f));<\/p>\n

\t\/\/ \u5165\u529b\u4fe1\u53f7\u306b\u30a8\u30d5\u30a7\u30af\u30bf\u30fc\u3092\u9069\u7528\u3059\u308b
\n\tfor (int i = 0; i < wavelength; i++)\n\t{\n\t\t\/\/ \u5165\u529b\u4fe1\u53f7\u306b\u30d5\u30a3\u30eb\u30bf\u3092\u9069\u7528\u3059\u308b\n\t\tfloat tmpL = highpassL.Process(inL[i]);\n\n\t\t\/\/ \u5165\u529b\u4fe1\u53f7\u306b\u30b2\u30a4\u30f3\u3092\u639b\u3051\u3066\u5897\u5e45\u3059\u308b\n\t\ttmpL = gain * tmpL;\n\n\t\t\/\/ \u632f\u5e45\u306e\u6700\u5927\u5024(\u3053\u3053\u3067\u306f-1.0\uff5e1.0)\u3092\u8d85\u3048\u305f\u3082\u306e\u3092\u30af\u30ea\u30c3\u30d4\u30f3\u30b0\u3059\u308b\n\t\tif (tmpL > 1.0) { tmpL = 1.0; }
\n\t\tif (tmpL < -1.0) { tmpL = -1.0; }\n\n\t\t\/\/ \u53f3\u5074\u306e\u5165\u529b\u4fe1\u53f7\u3082\u540c\u69d8\u306b\u51e6\u7406\n\t\tfloat tmpR = highpassR.Process(inR[i]);\n\t\ttmpR = gain * tmpR;\n\t\tif (tmpR > 1.0) { tmpR = 1.0; }
\n\t\tif (tmpR < -1.0) { tmpR = -1.0; }\n\t\t\n\t\t\/\/ \u5165\u529b\u4fe1\u53f7\u306b\u30d5\u30a3\u30eb\u30bf\u3092\u304b\u3051\u308b\n\t\toutL[i] = volume * tmpL;\n\t\toutR[i] = volume * tmpR;\n\t}\n}\n[\/crayon]\n\n\u4e0a\u8a18\u306f\u3042\u304f\u307e\u3067\u5b9f\u88c5\u4f8b\u3067\u3059\u3002\n\u30af\u30ea\u30c3\u30d4\u30f3\u30b0\u3059\u308b\u5024\u3092\u975e\u5bfe\u79f0(\u4f8b\uff1a-1.0\uff5e0.5 \u7b49)\u306b\u3057\u305f\u308a\u3001\u4e0a\u8a18if\u6587\u306e\u4ee3\u308f\u308a\u306b\u98fd\u548c\u95a2\u6570(tanh\u95a2\u6570\u306a\u3069)\u3092\u9069\u7528\u3057\u3066\u3082\u9762\u767d\u3044\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\n\n\u8cea\u554f\u306f\u30b3\u30e1\u30f3\u30c8\u6b04\u3084\u63b2\u793a\u677f<\/a>\u3001Twitter<\/a>\u3067\u3044\u305f\u3060\u3051\u3070\u3068\u304a\u3082\u3044\u307e\u3059\u3002
\n\u4ed6\u306e\u30a8\u30d5\u30a7\u30af\u30bf\u30fc\u5b9f\u88c5\u4f8b\u306f\u3053\u3061\u3089<\/a>\u306b\u3082\u3042\u308a\u307e\u3059\u3002\u3000\u2192\u3000\u30a8\u30d5\u30a7\u30af\u30bf\u30fc\u306e\u7c21\u5358\u306a\u5b9f\u88c5\u4f8b<\/a><\/p>\n

\u25a0\u63b2\u793a\u677f<\/a>
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