{"id":64553,"date":"2024-04-15T13:36:53","date_gmt":"2024-04-15T04:36:53","guid":{"rendered":"https:\/\/smilegate.ai\/?p=64553"},"modified":"2024-04-15T13:48:52","modified_gmt":"2024-04-15T04:48:52","slug":"tts-%ec%95%8c%ec%95%84%eb%b3%b4%ea%b8%b0","status":"publish","type":"post","link":"https:\/\/smilegate.ai\/cn\/2024\/04\/15\/tts-%ec%95%8c%ec%95%84%eb%b3%b4%ea%b8%b0\/","title":{"rendered":"TTS \uc54c\uc544\ubcf4\uae30"},"content":{"rendered":"<figure class=\"wp-block-image is-resized\"><img decoding=\"async\" src=\"https:\/\/revsic.github.io\/images\/post\/surveytts\/timeflow.png\" alt=\"\" width=\"758\" height=\"945\"><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h4 class=\"alignfull wp-block-heading\"><strong>\uc18c\uac1c\uae00<\/strong><\/h4>\n\n\n\n<p>[\uc120\ud589AI\uae30\uc220\ud300 \uc2e0\uc601\uc900]<\/p>\n\n\n\n<p>\uacfc\uac70\uc5d0 \ube44\ud574 \uc778\uacf5\uc9c0\ub2a5 \uae30\uc220\uc740 \ub180\ub77c\uc6b4 \uc815\ub3c4\ub85c \ubc1c\uc804\uc744 \uac70\ub4ed\ud558\uc5ec, \uc774\uc81c\ub294 \ube44\uc804\ubb38\uac00\ub3c4 \uc5b4\ub290 \uc815\ub3c4 \ub178\ub825\ub9cc \ud55c\ub2e4\uba74 \uc27d\uac8c \uc6d0\ud558\ub294 \ubaa9\uc801\uc131\uc744 \ub748 \ubaa8\ub378\uc744 \ub9cc\ub4e4 \uc218 \uc788\uac8c \ub418\uc5c8\ub2e4. <\/p>\n\n\n\n<p>\uadf8\ub7ec\ub098 \uc774\ubbf8\uc9c0 \ub610\ub294 \uc790\uc5f0\uc5b4\ucc98\ub9ac\uc5d0 \ube44\ud574 \uc74c\uc131 \ub3c4\uba54\uc778\uc740 \ubcf4\ub2e4 \ud3d0\uc1c4\uc801\uc774\uba70 \uc608\uc804\ubcf4\ub2e4 \uc26c\uc6cc\uc84c\uc74c\uc5d0\ub3c4 \uc804\ubb38\uac00\uc801 \uc9c0\uc2dd\uc774 \ub354 \ud544\uc694\ud55c \ubd84\uc57c\ub77c\uace0 \uc0dd\uac01\ud55c\ub2e4.<\/p>\n\n\n\n<p>\uc74c\uc131 \uad00\ub828 \uc5f0\uad6c\ub97c \uc9c4\ud589\ud558\ub294 \uc5f0\uad6c\uc790\ub85c\uc11c \ubcf4\ub2e4 \ube44\uc804\ubb38\uac00\uc640\uc758 \uc18c\ud1b5 \ubc0f \ud611\ub825 \uce21\uba74\uc5d0\uc11c \ub3c4\uc6c0\uc774 \ub418\uae38 \ubc14\ub77c\ub294 \ub9c8\uc74c\uc5d0 \ucd5c\ub300\ud55c \uc27d\uac8c \ud480\uc5b4\uc4f0\uace0\uc790 \ud55c\ub2e4. (\uc27d\uac8c \uc4f0\ub2e4\ubcf4\ub2c8 \uc5b4\ub290\uc815\ub3c4 \uc8fc\uad00\uc774 \ub4e4\uc5b4\uac00 \uc798\ubabb\ub41c \uc815\ubcf4\uac00 \uc788\uc744\uc218\ub3c4..)<\/p>\n\n\n\n<p>\uc74c\uc131 \ub3c4\uba54\uc778\uc5d0\uc11c\ub3c4 \uc138\ubd80\uc801\uc73c\ub85c \uc5ec\ub7ec \uac00\uc9c0 \ubd84\uc57c (\uc608: \uc74c\uc131 \ubcc0\uc870\/ \uc74c\uc131 \ud569\uc131\/ \ud654\uc790 \ubd84\ub9ac\/ \uc74c\uc131 \uc778\uc2dd \ub4f1)\uac00 \uc874\uc7ac\ud558\uc9c0\ub9cc \uc5f0\uad6c \ubd84\uc57c\uc778 \ud569\uc131\uc5d0 \ub300\ud574\uc11c \uc911\uc810\uc801\uc73c\ub85c \uc11c\uc220\ud560 \uac83\uc774\ub2e4.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h4 class=\"alignfull wp-block-heading\">\uc74c\uc131 \ubcc0\uc870\uc640 \uc74c\uc131 \ud569\uc131\uc740 \ubb34\uc5c7\uc774 \ub2e4\ub97c\uae4c? <\/h4>\n\n\n\n<p>\uc74c\uc131\ud569\uc131\uc740 TTS[Text-to-Speech], \uc74c\uc131\ubcc0\uc870\ub294 VC[Voice Conversion]\ub77c\uace0 \ubd88\ub9ac\ub294\ub370 \uc0ac\ub78c\ub9c8\ub2e4 \uc774 \ub458\uc744 \uc815\uc758\ud558\ub294 \ubc14\uac00 \ub2e4\ub97c \uc21c \uc788\uaca0\uc73c\ub098 \uc791\uc131\uc790\ub294 \ub2e4\uc74c\uacfc \uac19\uc774 \uc815\uc758\ud55c\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\uc74c\uc131 \ubcc0\uc870&nbsp;<\/strong>:&nbsp;&nbsp;&nbsp;<strong>\uc74c\uc131\uc744 \uc785\ub825<\/strong>\uc73c\ub85c \uc6d0\ud558\ub294 \ubaa9\uc18c\ub9ac\ub85c \ubcc0\ud658\ud558\ub294 \uae30\uc220\u200b<\/li>\n\n\n\n<li><strong>\uc74c\uc131 \ud569\uc131&nbsp;<\/strong>:&nbsp;&nbsp;&nbsp;<strong>\ud14d\uc2a4\ud2b8\ub97c \uc785\ub825<\/strong>\uc73c\ub85c \uc6d0\ud558\ub294 \ubaa9\uc18c\ub9ac\ub85c \ud569\uc131\ud558\ub294 \uae30\uc220<\/li>\n<\/ul>\n\n\n\n<p>\uacb0\uad6d \ub450 \ubd84\uc57c\uc758 \ucc28\uc774\ub294 \ub2e8\uc21c\ud558\uac8c \uc785\ub825\uc758 \uc885\ub958\uac00 \ub2e4\ub978 \uac83\uc73c\ub85c \ud574\uc11d\ud560 \uc218 \uc788\uc9c0\ub9cc \uc0ac\uc2e4\uc740 \uc774\uac83\uc73c\ub85c \uc778\ud574 \uae30\uc220\uc758 \ubaa9\uc801\uc131\uc774 \ud06c\uac8c \ubc14\ub010\ub2e4. <\/p>\n\n\n\n<p><strong>\uc74c\uc131<\/strong>\uc744 \ub4e4\uc5b4\ubcf4\uba74 \ub2e8\uc21c\ud558\uac8c \uc774 \uc74c\uc131\uc758 \uc131\ubcc4\uc774 \ubb34\uc5c7\uc778\uc9c0, \uae4a\uac8c \ub098\uc544\uac00\uba74 \ub204\uad6c\uc758 \ubaa9\uc18c\ub9ac\uc778\uc9c0 \ud310\ubcc4\ud560 \uc218 \uc788\ub294 <strong>\ud654\uc790\uc640 \uc5f0\uad00\ub418\ub294 \uc694\uc18c<\/strong>\ub97c \ud3ec\ud568\ud55c\ub2e4. <\/p>\n\n\n\n<p>\uadf8\ub7ec\ub098 <strong>\ud14d\uc2a4\ud2b8<\/strong>\ub294 \uadf8\ub7ec\ud55c \uc815\ubcf4\ub4e4\uc774 \uac70\uc758 \uc5c6\ub2e4\uc2dc\ud53c\ud558\uc5ec \uc874\ub313\ub9d0\/\ubc18\ub9d0, \ub9d0\ud22c\uc5d0 \ub300\ud55c \uc77c\ubd80 \uc815\ubcf4\ub4e4\ub9cc \uc874\uc7ac\ud560 \ubfd0\uc774\ub2e4. \uc774\uc5d0 \ub530\ub77c \uae00\ub9cc \ubd24\uc744 \ub54c \uc5b4\ub5a4 \uac10\uc815\uc774 \ub2f4\uaca8 \uc788\ub294\uc9c0 \ud310\ub2e8\ud560 \uc218 \uc5c6\uae30 \ub54c\ubb38\uc5d0 \uc774\ub97c \ubcf4\ub2e4 \uc798 \ub098\ud0c0\ub0b4\uace0\uc790 \uc774\ubaa8\ud2f0\ucf58 \ub4f1\uc758 \uae30\ub2a5\uc774 \uc0dd\uaca8\ub0ac\ub2e4\uace0 \uc0dd\uac01\ud55c\ub2e4. <\/p>\n\n\n\n<p>\uc774\uac83\uc744 \ubcf4\ub2e4 \ubd84\uc57c\ud654\ud558\uc790\uba74<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uc74c\uc131 \ud569\uc131&nbsp;:&nbsp;\ud654\uc790 \uc815\ubcf4\uac00 \uc5c6\ub294 \ud14d\uc2a4\ud2b8\ub85c\ubd80\ud130&nbsp;<strong>\ud654\uc790 \uc815\ubcf4\ub97c \uc8fc\uc785&nbsp;<\/strong>(injection).\u200b<\/li>\n\n\n\n<li>\uc74c\uc131 \ubcc0\ud658&nbsp;:&nbsp;\ud654\uc790 \uc815\ubcf4\uac00 \ud3ec\ud568\ub41c \uc74c\uc131\uc73c\ub85c\ubd80\ud130&nbsp;\u200b<strong>\ub2e4\ub978 \ud654\uc790\ub85c \ubcc0\ud658\ud558\ub294 \uc2a4\ud0c0\uc77c \ubcc0\ud658&nbsp;<\/strong>(Style transfer)\u200b \/ <strong>\ud654\uc790 \uc815\ubcf4 \ubd84\ub9ac&nbsp;<\/strong>(Disentangle)&nbsp;\ubc0f&nbsp;\uc7ac\ud569\uc131.\u200b<\/li>\n<\/ul>\n\n\n\n<p>\uc704\uc640 \uac19\uc774 \ub098\ud0c0\ub0bc \uc218 \uc788\uc5b4\uc11c \ub450 \ubaa8\ub378\uc758 \uad6c\uc870\ub294 \ub2e4\ub97c \uc218 \ubc16\uc5d0 \uc5c6\uace0 \uc774\ub97c \ud559\uc2b5\ud568\uc5d0 \uc788\uc5b4\uc11c \ub370\uc774\ud130 \uad6c\uc870\ub3c4 \ub2ec\ub77c\uc9c0\uac8c \ub41c\ub2e4.<\/p>\n\n\n\n<p>\ub610\ud55c \uc74c\uc131 \ud569\uc131\uc744 \ud558\uae30 \uc704\ud55c \ub370\uc774\ud130\uc14b\uc740 <strong>\ud654\uc790\uc758 \uc74c\uc131\uacfc \uadf8\uc5d0 \uc0c1\uc751\ud558\ub294 \ud14d\uc2a4\ud2b8<\/strong> \uc989, paired data\uac00 \ud544\uc694\ud558\ub098 \ubcc0\uc870\ub294 \ub2e8\uc21c\ud558\uac8c \ud654\uc790\uc758 \uc74c\uc131 \ub370\uc774\ud130\ub4e4\ub9cc \uc788\uc5b4\ub3c4 \uac00\ub2a5\ud558\ub2e4\ub294 \uc810\uc774 \ub2e4\ub974\ub2e4.<\/p>\n\n\n\n<p>\ubb3c\ub860 \uc5f0\uad6c \uae30\ubc95\uacfc \uc5b4\ub290 \uc815\ub3c4\uc758 \uc81c\uc5b4\ub825(Controllability)\ub97c \uc6d0\ud558\ub294 \uac00\uc5d0 \ub530\ub77c\uc11c \ub370\uc774\ud130 \ud3ec\ub9f7 \ub610\ud55c \ub2ec\ub77c\uc9c0\uac8c \ub418\ub294\ub370 \uc815\ub860\uc5d0 \uac00\uae4c\uc6b4 \uac83\ub9cc \uc11c\uc220\ud560 \uc608\uc815\uc774\ub2e4.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h4 class=\"alignfull wp-block-heading\" id=\"block-dcc19896-8254-4c15-bc98-81588975f1b5\"><strong>TTS: Text-to-Speech<\/strong><\/h4>\n\n\n\n<p>16\ub144\ub3c4 WaveNet[<a href=\"https:\/\/arxiv.org\/abs\/1609.03499\" target=\"_blank\" rel=\"noopener\">arXiv:1609.03499<\/a>], 17\ub144\ub3c4 Tacotron[<a href=\"https:\/\/arxiv.org\/abs\/1703.10135\" target=\"_blank\" rel=\"noopener\">arXiv:1703.10135<\/a>]\uc744 \uae30\uc810\uc73c\ub85c \ub525\ub7ec\ub2dd \uae30\ubc18\uc758 \uc74c\uc131 \ud569\uc131 TTS \ubaa8\ub378\ub4e4\uc774 \ud604\uc7ac\uae4c\uc9c0 \uafb8\uc900\ud788 \ubc1c\uc804\ud574 \uc624\uace0 \uc788\ub2e4.&nbsp;<\/p>\n\n\n\n<div class=\"wp-block-group is-nowrap is-layout-flex wp-container-core-group-is-layout-3 wp-block-group-is-layout-flex\">\n<div class=\"wp-block-group is-nowrap is-layout-flex wp-container-core-group-is-layout-2 wp-block-group-is-layout-flex\">\n<div class=\"wp-block-group is-nowrap is-layout-flex wp-container-core-group-is-layout-1 wp-block-group-is-layout-flex\">\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/blog.kakaocdn.net\/dn\/cTcwCb\/btrAcVXRKKp\/2qMKrWpDS6Ecmjrys7b4J0\/img.png\" alt=\"SampleRate\"\/><figcaption class=\"wp-element-caption\">\uadf8\ub9bc 1. Sample Rate<\/figcaption><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n<\/div>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/blog.kakaocdn.net\/dn\/ecbwTm\/btrAbGUPH18\/WjSFXgb41Y4LqUSMXxITz1\/img.png\" alt=\"BitRate\"\/><figcaption class=\"wp-element-caption\">\uadf8\ub9bc 2. Bit Rate<\/figcaption><\/figure>\n<\/div>\n\n\n\n<p><\/p>\n<\/div>\n\n\n\n<p>\uc790\uc5f0\uc5d0 \uc874\uc7ac\ud558\ub294 \ubc1c\ud654 \uc2e0\ud638\ub294 \uae30\uacc4 \uc2e0\ud638\ub85c&nbsp;<strong>\uc591\uc790\ud654\ud558\ub294 \uacfc\uc815<\/strong>\uc5d0\uc11c<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uadf8\ub9bc 1 : 1\ucd08\uc5d0 \uba87 \uac1c\uc758 \uc0d8\ud50c\uc744 \ud68d\ub4dd\ud560 \uac83\uc778\uc9c0\uc758&nbsp;<strong>Sample Rate(\uc774\ud558 SR)<\/strong><\/li>\n\n\n\n<li>\uadf8\ub9bc 2 : \uc0d8\ud50c\uc744 \uba87 \uac00\uc9c0 \uc218\ub85c \ub098\ud0c0\ub0bc \uac83\uc778\uc9c0\uc758&nbsp;<strong>Bit Rate<\/strong><\/li>\n<\/ul>\n\n\n\n<p>\uac00 \ub4f1\uc7a5\ud558\ub294\ub370, \uac04\ub2e8\ud558\uac8c \uc608\uc804 \uacf5\uc911\uc804\ud654 \uc74c\uc9c8\uc5d0\uc11c\ubd80\ud130 \uac8c\uc784\/\uc720\ud29c\ube0c \uc774\ub97c \ub118\uc5b4\uc11c\uae30 \uae4c\uc9c0\ub97c \uacb0\uc815\ud558\ub294 \uc694\uc18c\uc774\uba70 \ub192\uc744 \uc218\ub85d \uc88b\ub2e4\ub294 \uac83\ub9cc \uc774\ud574\ud574\ub3c4 \ucda9\ubd84\ud558\ub2e4.<\/p>\n\n\n\n<p>\uadf8\ub807\ub2e4\uba74 \uc790\uc5f0\uc2a4\ub7fd\uac8c \uc704\uc758 \ub450 \uc22b\uc790\ub294 \ub192\uc744\uc218\ub85d \uc88b\uc73c\ubbc0\ub85c \uc560\ucd08\uc5d0 \ub192\uac8c \uc124\uc815\ud558\uc5ec \uc74c\uc131\uc744 \ub9cc\ub4e4\uba74 &#8220;\uc608\uc804\uc5d0\ub3c4 \uc720\ud29c\ube0c \uc74c\uc9c8\uc774 \uac00\ub2a5\ud588\uaca0\ub124&#8221;\ub780 \uc758\ubb38\uc774 \ub4e4 \uac83\uc774\ub2e4.<\/p>\n\n\n\n<p>\ud558\uc9c0\ub9cc \ub2f9\uc5f0\ud558\uac8c\ub3c4 \ubd88\uac00\ub2a5\ud55c \uc774\uc720\uac00 \uc788\uc5c8\uc73c\ub2c8 \uadf8 \uc774\uc720\ub294 \ub2e4\uc74c\uacfc \uac19\ub2e4.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>1\ucd08\uc5d0 2\ub9cc\uc5ec\uac1c \ud504\ub808\uc784\uc744 \ud3ec\ud568\ud558\ub294 sparse input\uc73c\ub85c\ubd80\ud130 context\ub97c \ucd94\uc815\ud560\ub9cc\ud07c&nbsp;<strong>\ub113\uc740 receptive field\ub97c \uac00\uc9c4 \uc544\ud0a4\ud14d\ucc98\uc758 \ubd80\uc7ac<\/strong>&nbsp;(WaveNet[<a href=\"https:\/\/arxiv.org\/abs\/1609.03499\" target=\"_blank\" rel=\"noopener\">arXiv:1609.03499<\/a>] \uc774\uc804)<\/li>\n\n\n\n<li>\uc74c\uc18c\uc758 \ubc1c\ud654 \uc2dc\uac04\uc740 \ub300\ub7b5 20~50ms\uc73c\ub85c 1\ucd08\uc5d0 20~50\uc5ec\uac1c \uc815\ub3c4\uc774\uc9c0\ub9cc, \uc74c\uc131\uc740 1\ucd08\uc5d0 2\ub9cc\uc5d0\uc11c 4\ub9cc\uc5ec\uac1c \ud504\ub808\uc784\uc73c\ub85c 1k\ubc30 \uc815\ub3c4 \uae38\uc774 \ucc28 \uc0ac\uc774\uc758&nbsp;<strong>\uad00\uacc4\uc131\uc744 \ud559\uc2b5\uc2dc\ud0a4\uae30 \uc5b4\ub824\uc6c0<\/strong><\/li>\n\n\n\n<li>\uace0\uc8fc\ud30c\ub300\uc5ed\uc73c\ub85c \uac08 \uc218\ub85d \uc784\uc758\uc131\uc774 \uc9d9\uc5b4\uc838 \ud655\ub960 \ubaa8\ub378 \ub3c4\uc785 \uc5c6\uc774&nbsp;<strong>\uace0\uc8fc\ud30c \uc815\ubcf4\uc758 \uad6c\ud604\uc774 \uc5b4\ub824\uc6c0<\/strong><\/li>\n<\/ol>\n\n\n\n<p>\ubcf4\ub2e4 \uc27d\uac8c \ud574\uc11d\ud558\uc790\uba74 \ud558\ub4dc\uc6e8\uc5b4\uc758 \ubc1c\uc804 \ubc0f \uae30\uc220\uc758 \ubc1c\uc804 \ubaa8\ub450 \ud5c8\uc6a9\uce58 \uc774\ud558\uc600\uae30\uc5d0 \ud798\ub4e4\uc5c8\uc73c\ub098 \uba4b\uc9c4 \uc5f0\uad6c\uc790\ub4e4\uc758 \ub178\ub825\uc73c\ub85c \uc778\ud558\uc5ec \uac00\ub2a5\ud574\uc84c\ub2e4.<\/p>\n\n\n\n<p>\uc5b4\ub5a4 \uc544\uc774\ub514\uc5b4\uac00 \ubc14\ud0d5\uc774 \ub418\uc5c8\uc744\uae4c?<\/p>\n\n\n\n<p>\ubc14\ub85c Spectral feature\ub77c\ub294 \uc911\uac04 \ub9e4\uac1c\ub97c \ud1b5\ud574 \uc6d0\ud558\ub294 \ubaa9\uc801\uc131\uc744 \ub748 \ubaa8\ub378\ub4e4\uc758 \uacb0\ud569\uc744 \uc131\uacf5\uc2dc\ucf30\uace0, \uc544\ub798\uc640 \uac19\uc774 2 Stage(Acoustic, Vocoder)\ub85c \ub098\ub204\uc5b4 \uace0\ud488\uc9c8\uc758 \uc74c\uc131\ud569\uc131\uc744 \uac00\ub2a5\ud1a0\ub85d \ud588\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Acoustic (Stage 1):&nbsp;<\/strong>\ud14d\uc2a4\ud2b8\uc5d0\uc11c spectral feature\uc744&nbsp;<strong>\ud569\uc131<\/strong>&nbsp;<\/li>\n\n\n\n<li><strong>Vocoder&nbsp;(Stage 2)<\/strong>: spectral feature\ub85c\ubd80\ud130 \uc74c\uc131\uc744&nbsp;<strong>\ubcf5\uc6d0<\/strong><\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h4 class=\"alignfull wp-block-heading\">Spectral feature\ub780 \ubb34\uc5c7\uc77c\uae4c?<\/h4>\n\n\n\n<div class=\"wp-block-group is-nowrap is-layout-flex wp-container-core-group-is-layout-4 wp-block-group-is-layout-flex\">\n<figure class=\"wp-block-image is-resized\"><img decoding=\"async\" src=\"https:\/\/revsic.github.io\/images\/post\/surveytts\/powerspec.png\" alt=\"\" width=\"645\" height=\"286\"><figcaption class=\"wp-element-caption\"><strong>\uadf8\ub9bc 3. Power spectrogram<\/strong><\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image is-resized\"><img decoding=\"async\" src=\"https:\/\/revsic.github.io\/images\/post\/surveytts\/melspec.png\" alt=\"\" width=\"640\" height=\"291\"><figcaption class=\"wp-element-caption\"><strong>\uadf8\ub9bc 4. log-Mel scale spectrogram<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n\n<p>\ub2e8\uc21c\ud558\uac8c \uc544\ubb34 feature\uc744 \ub9e4\uac1c\uccb4\ub85c \ub450 \ubaa8\ub378\uc758 \uacb0\ud569\uc744 \ud558\ub294 \uac83\uc740 \ub2f9\uc5f0\ud558\uac8c\ub3c4 \ubd88\uac00\ub2a5\ud558\uba70,<s> \uad50\uacfc \uacfc\uc815 \uc911 \ubc30\uc6b4 Fourier Transform\uc744 \uc774\uc6a9\ud558\uc5ec \uc2dc\uac04\ub300\uc5ed\uc744 \uc8fc\ud30c\uc218\ub300\uc5ed\uc73c\ub85c \ubc14\uafb8\uace0<\/s><\/p>\n\n\n\n<p>\uc5ec\ub7ec \uc218\ud559\uc801 \uc694\uc18c\ub97c \ub2f4\uc544 \ub9cc\ub4e4\uc5b4\uc9c4 Spectral feature\ub294 \uc0ac\uc2e4 \uc778\uac04\uc758 \uccad\uac01 \uccb4\uacc4\ub97c \ubaa8\uc0ac\ud654\ud588\ub2e4\uace0 \ubcf4\uba74 \ub41c\ub2e4.<\/p>\n\n\n\n<p>\uc2e0\uae30\ud558\uac8c\ub3c4 \uccad\uac01\uccb4\uacc4\ub294 <strong>\uc74c\uc758 \uc138\uae30\uc640 \ub192\ub0ae\uc774\uc5d0 \ubaa8\ub450 log-scale\ub85c \ubc18\uc751<\/strong>\ud55c\ub2e4. \uc2e0\ud638\uc758 \uc138\uae30\uac00 N\ubc30 \ucee4\uc9c0\ub354\ub77c\ub3c4, \uc2e4\uc81c\ub85c\ub294 \ubcf4\ub2e4 \uc801\uac8c(logN \uc815\ub3c4\ub85c) \uc778\uc2dd\ud558\ub294 \uac83\uc774\ub2e4.<\/p>\n\n\n\n<p>\uc774\ub97c \ubc18\uc601\ud558\uc5ec \uc778\uac04\uc774 \uc2e4\uc81c\ub85c \ub4e3\ub294 \uc2e0\ud638\uc758 \uc138\uae30\uc640 \ub192\ub0ae\uc774 \ub300\uc5ed\uc744 \uac15\uc870\ud558\uae30 \uc704\ud574 \uc218\ud559\uc801 \uc5f0\uc0b0\uc744 \ud1b5\ud574 \uc5bb\uc740 \uadf8\ub9bc 3\uc744 \uc778\uac04\uc758 \uccad\uac01 \uccb4\uacc4\uc758 \ud2b9\uc131\uc744 \ub530\ub77c \uadf8\ub9bc 4\ub85c \uce58\ud658\ud558\uc5ec \uc704\uc758 \ubb38\uc81c\ub97c \ud574\uacb0\ud55c \uac83\uc73c\ub85c \uc774\ub97c \uac04\ub7b5\ud558\uac8c  Mel-spectrogram \ub610\ub294 log-mel spectrogram\uc774\ub77c \uc77c\uceeb\ub294\ub2e4.<\/p>\n\n\n\n<p>\uc704\uc758 \uc218\ud559\uc801 \uc5f0\uc0b0\uc758 \uc885\ub958\uc640 \ubc29\ubc95\uc5d0 \ub530\ub77c \ub2e4\ub978 Feature\ub4e4\uc744 \ub3c4\ucd9c\ud560 \uc218 \uc788\uace0, \uc774\ub97c \uc774\uc6a9\ud560 \uc218\ub3c4 \uc788\uc9c0\ub9cc \ub300\ud45c\uc801\uc73c\ub85c Mel-spectrogram\uc744 \uc0ac\uc6a9\ud55c\ub2e4 (\ucd5c\uadfc \ucd94\uc138\ub294 \uc790\uc5f0\uc5b4 \ubd84\uc57c\uc758 \ubc1c\uc804\uc73c\ub85c \uc624\ub514\uc624 \ucf54\ub371\uc744 \ud65c\uc6a9\ud55c \uae30\ubc95\ub4e4\ub85c \ubcc0\uacbd\ub418\uc5c8\ub2e4. \ubcf4\ub2e4 \uc804\ubb38\uac00\uc801\uc778 \uc9c0\uc2dd\uc744 \uc6d0\ud560 \uacbd\uc6b0 <a href=\"https:\/\/arxiv.org\/pdf\/2107.03312.pdf\" target=\"_blank\" rel=\"noopener\">SoundStream<\/a>, <a href=\"https:\/\/arxiv.org\/pdf\/2209.03143.pdf\" target=\"_blank\" rel=\"noopener\">AudioLM<\/a>\ub4e4 \ucc38\uc870).<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>\uc790, \uc774\uc81c \uc704\uc758 feature\ub4e4\uc744 \uac00\uc9c0\uace0 \uc5b4\ub5bb\uac8c \ud65c\uc6a9\ud558\uc5ec \uace0\ud488\uc9c8 \uc74c\uc131\ud569\uc131\uc774 \uac00\ub2a5\ud574\uc84c\ub294\uc9c0 Stage 1 Acoustic Model\uc744 \uc54c\uc544\ubcf4\uc790.<\/p>\n\n\n\n<h4 class=\"alignfull wp-block-heading\"><strong>Acoustic Model<\/strong>\uc774\ub780?<\/h4>\n\n\n\n<p>Acoustic model\uc740 \ud14d\uc2a4\ud2b8\uc5d0\uc11c \uc704\uc5d0\uc11c \uc5b8\uae09\ud55c mel-spectrogram\uc744 \ub9cc\ub4dc\ub294 \ubaa8\ub378\uc774\uba70, \uc74c\uc131 \ubd84\uc57c\ub294 \ub2e4\ub978 \ubd84\uc57c\uc640\ub294 \ub2e4\ub978 \ub3c5\ud2b9\ud55c \ud2b9\uc131\uc744 \uac00\uc9c4\ub2e4.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\ubc1c\ud654 \ud2b9\uc131\uc0c1 \uc74c\uc18c\uac00 \ub3d9\uc77c\ud55c \ubb38\uc7a5\uc774\uc5b4\ub3c4 \uc0ac\ub78c\ub9c8\ub2e4, \ub179\uc74c\ub9c8\ub2e4 \ubc1c\ud654\uc758 \uae38\uc774\uac00 \ub2ec\ub77c\uc9c8 \uc218 \uc788\uc5b4&nbsp;<strong>\uc74c\uc18c\ub9cc\uc73c\ub85c\ub294 \ubc1c\ud654 \uae38\uc774\uc758 \ucd94\uc815\uc758 \uc5b4\ub824\uc6c0<\/strong><\/li>\n\n\n\n<li>\ud14d\uc2a4\ud2b8\uc640 \ubc1c\ud654 \uc74c\uc131 \ubaa8\ub450 \uc2dc\uac04 \ucd95\uc5d0 \ub530\ub77c \uc815\ub82c\ub418\uae30 \ub54c\ubb38\uc5d0&nbsp;<strong>\ub458\uc758 \uad00\uacc4\uc131\uc774 \uc21c\uc99d\uac00(monotonic) \ud558\ub294 \ud2b9\uc131<\/strong>\uc744 \ub754<\/li>\n<\/ol>\n\n\n\n<p>\uc880 \ub354 \uc27d\uac8c \ud574\uc11d\ud558\uc790\uba74 <\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li> &#8216;<em>\uac10\uc0ac\ud569\ub2c8\ub2e4&#8217;<\/em> \ub77c\ub294 \ubb38\uc7a5\uc744 \ubc1c\uc74c\ud558\ub294 \ubc29\ubc95\uc740 \uc0ac\ub78c\/\uac10\uc815\/\ub098\uc774 \ub4f1 \uc5ec\ub7ec\uac00\uc9c0 \uc694\uc18c\uc5d0 \ub530\ub77c \ub9e4\uc6b0 \ub2e4\ub974\ub2e4.<\/li>\n\n\n\n<li>\uac10\uc744 \ubc1c\uc74c\ud55c\ub2e4\uc74c\uc5d0 \uc0ac\ub97c \ubc1c\uc74c\ud558\uc9c0 \uac10\ub2e4\uc0ac\ud569\ub2c8 \ucc98\ub7fc \uc77d\uc9c0\ub9cc \uc54a\ub294\ub2e4. \ubb3c\ub860 \uc774\ub798\ub3c4 \uc774\ud574\ub418\ub294\uac8c \ud55c\uad6d\uc5b4\uc758 MAGIC.<\/li>\n<\/ol>\n\n\n\n<p>\uadf8\ub9bc 5\uc744 \ubcf4\uba74 Tacotron\uc758 \uad6c\uc870\uac00 \ubcf4\uc778\ub2e4.<\/p>\n\n\n\n<p>\ud06c\uac8c Attention\uc744 \uc911\uc2ec\uc73c\ub85c \uc67c\ucabd\uacfc \uc624\ub978\ucabd\uc73c\ub85c \ub098\ub258\ub294\ub370, \uc67c\ucabd\uc744 Encoder \uc624\ub978\ucabd\uc744 Decoder\ub77c \uce6d\ud55c\ub2e4.<\/p>\n\n\n\n<p>\uc989, TTS\ub294 Encoder, Attention, Decoder\uc758 \uacb0\ud569\uc73c\ub85c \ub9cc\ub4e4\uc5b4\uc9c4 \uac83\uc774\uba70 \uc774 \uad6c\uc870\ub294 \uc815\ub9d0\uc815\ub9d0 \ub2e4\uc591\ud574\uc84c\uace0 \ud604\uc7ac \uc0ac\uc7a5\ub41c \uae30\uc220\uc774\uae30\uc5d0 \uac01 \ubaa8\ub4c8\uc5d0 \ub300\ud574 \uc124\uba85\ud558\uae30 \ubcf4\ub2e8 \uc544\uc774\ub514\uc5b4 \uc911\uc2ec\uc73c\ub85c \uc11c\uc220\ud558\uace0\uc790 \ud55c\ub2e4.<\/p>\n\n\n\n<p>\uae00\uc790\uac00 \uc788\uc744 \ub54c \uae00\uc790\ud558\ub098\ud558\ub098\ub294 \uc758\ubbf8\ub97c \uac70\uc758 \ub0b4\ud3ec\ud558\uace0 \uc788\uc9c0 \uc54a\uc73c\ub098 \uc774\uac83\uc774 \ub2e8\uc5b4 \ub2e8\uc704\uac00 \ub418\ub294 \uc21c\uac04 \uadf8 \uc758\ubbf8\uac00 \ubd80\uc5ec\ub418\uae30\uc5d0 \uadf8 \uad00\uacc4\uc131\uc744 \ud559\uc2b5\ud558\ub294 \uac83\uc774 \ud575\uc2ec\uc774\ub2e4.<\/p>\n\n\n\n<p>\ub530\ub77c\uc11c <\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Encoder: \uae00\uc790\ub4e4\uc758 \uc870\ud569\uc5d0 \ub530\ub978 \uc815\ubcf4\ub97c \ud568\ucd95\uc2dc\ud0a4\ub294 \uac83\uc774 \uc5ed\ud560<\/li>\n\n\n\n<li>Attention: \uadf8 \uae00\uc790\ub4e4\uc758 \uc815\ubcf4\uac00 \ucd5c\uc885 \ucd9c\ub825\uc778 Spectral Feature\uc640 \uc5b4\ub5a4 \uc5f0\uad00\uc131\uc744 \uac16\ub294\uac00<\/li>\n\n\n\n<li>Decoder: Spectral Feature\uc758 \ub2e4\uc74c \uc2dc\uac04(\uc815\ud655\ud558\uac8c\ub294 Frame\uc774\ub2e4)\uc5d0\ub294 \uc5b4\ub5a4 Feature\uac00 \ub098\uc62c \uac83\uc778\uc9c0 \uc608\uce21<\/li>\n<\/ul>\n\n\n\n<p>\ub85c \ub098\ub258\uba70, \uc774\uc5d0 \ub530\ub77c \ud559\uc2b5 \ub370\uc774\ud130\ub294 \uc704\uc5d0\uc11c \uc5b8\uae09\ud55c \ubc14\uc640 \uac19\uc774 <strong>\ud14d\uc2a4\ud2b8\uc640 \uc74c\uc131\uc744 \uc218\ud559\uc801\uc73c\ub85c \uc7ac\uc870\ub9bd\ud55c Spectral Feature<\/strong>\uac00 <strong>\ud544\uc694<\/strong>\ud55c \uac83\uc774\ub2e4.<\/p>\n\n\n\n<p>\uadf8\ub9bc 5\uc758 Tacotron\uc2dc\uc808\uc5d0\ub294 \ucd08\ub85d\uc0c9 \uae00\uc528\uc758 Griffin-Lim\uc774\ub77c\ub294 \uc804\ud1b5\uc801\uc778 \uae30\ubc95\uc73c\ub85c \uc774 Feature\uc744 \uc74c\uc131\ud654\ud558\uc600\ub294\ub370 \uae30\uacc4\uc74c\uc774 \ub9ce\uc774 \uc11e\uc5ec\uc11c \uc74c\uc9c8\uc774 \uc88b\uc9c0 \ubabb\ud558\uc600\uae30\uc5d0 Spectral Feature\uc744 \uc74c\uc131\ud654\ud560 \uc218 \uc788\ub294 \ubc29\ubc95\uc774 \ub300\ub450\ub418\uae30 \uc2dc\uc791\ud588\ub2e4 (\uc2e4\uc81c\ub85c\ub294 Vocoder\uc778 Wavenet(2016)\uc774 Tacotron(2017)\ubcf4\ub2e4 \uba3c\uc800 \ub098\uc654\uc74c).<\/p>\n\n\n\n<p><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<div class=\"wp-block-group is-nowrap is-layout-flex wp-container-core-group-is-layout-5 wp-block-group-is-layout-flex\">\n<figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" src=\"https:\/\/smilegate.ai\/wp-content\/uploads\/2024\/04\/image-1.png\" alt=\"\" class=\"wp-image-64556\" width=\"819\" height=\"482\" srcset=\"https:\/\/smilegate.ai\/wp-content\/uploads\/2024\/04\/image-1.png 843w, https:\/\/smilegate.ai\/wp-content\/uploads\/2024\/04\/image-1-300x177.png 300w, https:\/\/smilegate.ai\/wp-content\/uploads\/2024\/04\/image-1-768x453.png 768w, https:\/\/smilegate.ai\/wp-content\/uploads\/2024\/04\/image-1-18x12.png 18w\" sizes=\"(max-width: 819px) 100vw, 819px\" \/><figcaption class=\"wp-element-caption\">\uadf8\ub9bc 5. Google\uc758 Tacotron<\/figcaption><\/figure>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img decoding=\"async\" src=\"https:\/\/smilegate.ai\/wp-content\/uploads\/2024\/04\/image.png\" alt=\"\" class=\"wp-image-64555\" width=\"292\" height=\"478\" srcset=\"https:\/\/smilegate.ai\/wp-content\/uploads\/2024\/04\/image.png 350w, https:\/\/smilegate.ai\/wp-content\/uploads\/2024\/04\/image-184x300.png 184w, https:\/\/smilegate.ai\/wp-content\/uploads\/2024\/04\/image-7x12.png 7w\" sizes=\"(max-width: 292px) 100vw, 292px\" \/><figcaption class=\"wp-element-caption\">\uadf8\ub9bc 6. \ud55c\uad6d\uc5b4\uc758 \uc704\ub300\ud568<\/figcaption><\/figure><\/div><\/div>\n\n\n\n<p><\/p>\n\n\n\n<h4 class=\"alignwide wp-block-heading\">Vocoder Model\uc774\ub780 \ubb34\uc5c7\uc778\uac00?<\/h4>\n\n\n\n<p>\ubcf4\ucf54\ub354\ub294 \uc74c\uc131\uc744 \uc555\ucd95\/\ubcf5\uc6d0\ud558\ub294 \uae30\uc220\uc744 \ud1b5\uce6d\ud55c\ub2e4. TTS\uc5d0\uc11c\ub294 algorithmic \ud558\uac8c \uad6c\ud574\uc9c4 spectrogram(mel-scale)\uc744 \uc74c\uc131\uc73c\ub85c \ubcf5\uc6d0\ud558\ub294 \ubaa8\ub378\uc744 \uc774\uc57c\uae30\ud55c\ub2e4.<\/p>\n\n\n\n<p>\ub2e8\uc21c\ud788 STFT\ub9cc\uc744 \ucde8\ud588\ub2e4\uba74 \ubc1c\ud654 \uc2e0\ud638 \ud2b9\uc131\uc0c1 iSTFT\ub9cc\uc73c\ub85c\ub3c4 \ucda9\ubd84\ud55c \uc74c\uc131\uc744 \ubcf5\uc6d0\ud574\ub0bc \uc218 \uc788\uc9c0\ub9cc,&nbsp;<strong>mel-spectrogram \ubcc0\ud658 \uacfc\uc815<\/strong>\uc5d0\uc11c<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\uc8fc\ud30c\ub300\uc5ed\ubcc4 \uc138\uae30\ub97c \uce21\uc815\ud558\uae30 \uc704\ud574 \uc2e4-\ud5c8\uc218 \uc2e0\ud638\ub97c&nbsp;<strong>\uc2e4\uc218 \uc2e0\ud638\ub85c \ucd95\uc57d\ud558\ub294 Absolute \uc5f0\uc0b0<\/strong><\/li>\n\n\n\n<li>500~1000\uc5ec\uac1c bins\ub97c 80~100\uac1c\ub85c<strong>&nbsp;\uc555\ucd95\ud558\ub294 filter bank \uc5f0\uc0b0<\/strong><\/li>\n<\/ol>\n\n\n\n<p>\uc758 2\uac00\uc9c0 \uc190\uc2e4 \uc555\ucd95\uc744 \uac70\uce58\uae30\uc5d0 \uc54c\uace0\ub9ac\uc998\uc744 \uc774\uc6a9\ud55c \ubcf5\uc6d0\uc5d0\ub294 \ud55c\uacc4\uac00 \uc874\uc7ac\ud560 \uc218 \ubc16\uc5d0 \uc5c6\uc5c8\uace0 \uc774\ub97c \ud574\uacb0\ud558\uace0\uc790 Wavenet\uc774 \ub098\uc654\ub294\ub370 \uc18d\ub3c4\uac00 \ub108\ubb34 \ub290\ub824\uc11c \ud604\uc7ac\ub294 \uc0ac\uc6a9\ud558\uc9c0 \uc54a\uc73c\ub098, Vocoder\uc758 \uc120\uc870\uaca9\uc778 \ubaa8\ub378\uc774\ub2e4. \uadf8 \ub17c\ubb38\uc5d0\uc11c\ub294 <strong>\ucd08\ub2f9 2\ub9cc\uc5ec\uac1c \ud504\ub808\uc784\uc744 \uac10\ub2f9\ud560\ub9cc\ud55c receptive field<\/strong>\uc744 \ud655\ubcf4\ud558\uae30 \uc704\ud574 Dilated convolution\uc744 \ub3c4\uc785\ud558\uc600\uace0, \uadf8\ub9bc 7\uacfc \uac19\uc774 \uc77c\uc815 \ubd80\ubd84\uc744 \uac74\ub108\ub6f0\uc5b4 \uacc4\uc0b0\ud558\uc5ec \uc5f0\uc0b0\ub7c9\uc744 \ud06c\uac8c \uc904\uc774\uba70 receptive field\ub97c \ub298\ub838\ub2e4. <\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/revsic.github.io\/images\/post\/surveytts\/wavenet_fig3.PNG\" alt=\"\"><figcaption class=\"wp-element-caption\">\uadf8\ub9bc 7. Wavenet<\/figcaption><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h4 class=\"alignfull wp-block-heading\">\ub9c8\uce58\uba70<\/h4>\n\n\n\n<p>\uc774\uc0c1\uc73c\ub85c 2stage TTS\uc758 \uae30\ucd08\uc5d0 \ub300\ud574\uc11c \uac04\ub7b5\ud558\uac8c \uc124\uba85\ud558\uc600\ub2e4.<\/p>\n\n\n\n<p>2016\ub144, 2017\ub144 \ub17c\ubb38\uc744 \uae30\uc220\ud558\ub2e4\ubcf4\ub2c8 \ud604\uc7ac\uc640\ub294 \ub9de\uc9c0 \uc54a\ub294 \ubd80\ubd84\ub3c4 \uc0c1\ub2f9\uc218 \uc788\uc5c8\uc73c\ub098 \uadf8 \uadfc\uac04\uc744 \uc124\uba85\ud558\uace0\uc790 \uae30\uc220\ud55c \uae00\uc774\uae30\uc5d0 \ub2e4\uc18c \uc774\ud574\ub97c \ub3d5\uae30 \uc704\ud55c \uc815\ud655\ud558\uc9c0 \uc54a\uc740 \uc815\ubcf4\uac00 \uc788\ub354\ub77c\ub3c4 \uc774\ud574\ubc14\ub780\ub2e4.<\/p>\n\n\n\n<p>2stage\uc758 \uace0\uc9c8\uc801\uc778 \ub2e8\uc810\uc744 \ud574\uacb0\ud558\uae30 \uc704\ud574 \uace0\ud488\uc9c8\uc758 1stage\ubc29\ubc95\ub860, \ud558\ub098\ud558\ub098\uc758 \ud504\ub808\uc784\uc744 \uc608\uce21\ud558\ub294 \ubc29\ubc95(Auto-regressive)\ub300\uc2e0 \ubaa8\ub4e0 \ud504\ub808\uc784\uc744 \ud55c\ubc88\uc5d0 \uc608\uce21\ud558\ub294 \ubc29\ubc95(Parallel Model), Neural Audio Codec\uc744 \ud65c\uc6a9\ud558\uc5ec Spectral feature\uc744 \ub300\uccb4\ud558\ub294 Token\ud65c\uc6a9 \ubc29\ubc95\ub860 \ub4f1 \ud604\uc7ac\ub3c4 \uc274 \uc0c8 \uc5c6\uc774 \ud6cc\ub96d\ud55c \uc5f0\uad6c \uacb0\uacfc\ub4e4\uc774 \ub098\uc624\uace0 \uc788\ub2e4.<\/p>\n\n\n\n<p>\ub610\ud55c \uae30\uc874\uc5d0\ub294 \ucd5c\uc18c 1\uc2dc\uac04 \uc774\uc0c1\uc758 Paired Data\uac00 \ud544\uc694\ud588\uc73c\ub098 \ud604\uc7ac\ub294 \ub2e8 \uba87\ucd08\uc758 \ub370\uc774\ud130\ub9cc\ub85c\ub3c4 \uc5b4\ub290\uc815\ub3c4 \uc6d0\ud558\ub294 \uc74c\uc131\uc774 \ub9cc\ub4e4\uc5b4 \uc9c0\ub294 \uc2dc\ub300\uac00 \ub418\uc5c8\ub2e4. <\/p>\n\n\n\n<p>\uc608\uc804\uc5d0 \ube44\ud574 \ubcf4\ub2e4 \uc26c\uc6b4 \uc811\uadfc\uc131\uacfc \uc810\ucc28 \ucf54\ub4dc\ub97c \uacf5\uac1c\ud558\ub294 \ucabd\uc73c\ub85c \ubc29\ud5a5 \uc120\ud68c\uac00 \ub41c\ub9cc\ud07c \ube44\uc804\ubb38\uac00\ub4e4\ub3c4 \uc77c\ubc18\uc801\uc778 \ud1a4\uc758 \uc74c\uc131\ubfd0\ub9cc \uc544\ub2c8\ub77c \ub178\ub798\ud558\ub294 \uc74c\uc131\ub3c4 \uc27d\uac8c \ub9cc\ub4e4 \uc218 \uc788\uc74c\uc73c\ub85c \uc7ac\ubc0c\uac8c \uc990\uae30\uae38 \ubc14\ub780\ub2e4.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uc804\uc5d0 \uac19\uc774 \uc5f0\uad6c\ud588\ub358 \uc5f0\uad6c\uc790\uc758 \ube14\ub85c\uadf8 \uae00\uc744 \uc815\uc81c \ucd94\uac00 \ubc0f \uc8fc\uad00\ub300\ub85c \ud574\uc11d\ud55c \uae00\uc784<\/li>\n<\/ul>\n\n\n\n<p><strong>\u53c2\u8003<\/strong><\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"block-2673c6cc-3167-4092-b651-32612ba89868\">1. <strong><a href=\"https:\/\/revsic.github.io\/blog\/alignment\/\" target=\"_blank\" rel=\"noopener\">https:\/\/revsic.github.io\/blog\/alignment\/<\/a><\/strong><\/h4>\n\n\n\n<p>2. https:\/\/arxiv.org\/pdf\/2107.03312.pdf<\/p>\n\n\n\n<p>3. https:\/\/arxiv.org\/pdf\/2209.03143.pdf<\/p>\n\n\n\n<p>4. https:\/\/arxiv.org\/abs\/1703.10135<\/p>\n\n\n\n<p>5. https:\/\/arxiv.org\/abs\/1712.05884<\/p>\n<div class=\"likebtn_container\" style=\"\"><!-- LikeBtn.com BEGIN --><span class=\"likebtn-wrapper\"  data-identifier=\"post_64553\"  data-site_id=\"5f255b28943ec9a60bed08fd\"  data-lang=\"ko\"  data-dislike_enabled=\"false\"  data-icon_dislike_show=\"false\"  data-tooltip_enabled=\"false\"  data-white_label=\"true\"  data-rich_snippet=\"true\"  data-popup_disabled=\"true\"  data-i18n_like=\"Like\"  data-style=\"\"  data-unlike_allowed=\"\"  data-show_copyright=\"\"  data-item_url=\"https:\/\/smilegate.ai\/cn\/2024\/04\/15\/tts-%ec%95%8c%ec%95%84%eb%b3%b4%ea%b8%b0\/\"  data-item_title=\"TTS \uc54c\uc544\ubcf4\uae30\"  data-item_image=\"https:\/\/smilegate.ai\/wp-content\/uploads\/2024\/04\/timeflow-821x1024.png\"  data-item_date=\"2024-04-15T13:36:53+09:00\"  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