{"id":5949,"date":"2020-07-13T17:30:38","date_gmt":"2020-07-13T15:30:38","guid":{"rendered":"https:\/\/websites.fraunhofer.de\/audioblog\/?p=5949"},"modified":"2020-07-13T17:33:52","modified_gmt":"2020-07-13T15:33:52","slug":"apple-recommends-xheaac","status":"publish","type":"post","link":"https:\/\/www.audioblog.iis.fraunhofer.com\/ko\/apple-recommends-xheaac","title":{"rendered":"\uc560\ud50c, \ubaa8\ub4e0 \uc624\ub514\uc624 \uc5d0\uc14b \uc2a4\ud2b8\ub9ac\ubc0d\uc5d0 xHE-AAC \ucf54\ub371 \uc0ac\uc6a9 \uad8c\uc7a5"},"content":{"rendered":"<p><strong>\uc62c\ud574 \uc560\ud50c \uc138\uacc4\uac1c\ubc1c\uc790\ud68c\uc758\uc5d0\uc11c\ub294 \uc560\ud50c \uae30\uae30\uc758 <\/strong><strong>HLS <\/strong><strong>\uc2a4\ud2b8\ub9ac\ubc0d\uc744 \ub2e4\ub8e8\ub294 \ucd1d <\/strong><strong>3<\/strong><strong>\uac1c \uc138\uc158\uc5d0\uc11c <\/strong><strong>xHE-AAC<\/strong><strong>\uac00 \uc18c\uac1c\ub418\uc5c8\uc2b5\ub2c8\ub2e4<\/strong><strong>.<\/strong><\/p>\n<p><!--more--><\/p>\n<p>\uc560\ud50c\uc758 \uc5f0\ub840\ud589\uc0ac\uc778 \uc138\uacc4\uac1c\ubc1c\uc790\ud68c\uc758(WWDC)\uac00 \uc62c\ud574\ub294 \ucf54\ub85c\ub09819 \uc5ec\ud30c\ub85c \ubb34\ub8cc \uc628\ub77c\uc778 \ud589\uc0ac\ub85c \uc9c4\ud589\ub418\uc5c8\uc2b5\ub2c8\ub2e4. \ub179\ud654\ub41c \uc138\uc158 \uc601\uc0c1\uc740 \ub300\uc911\uc5d0\uac8c \uacf5\uac1c\ub418\uc5c8\uc2b5\ub2c8\ub2e4. \uc560\ud50c OS\uc5d0\uc11c \uae30\ubcf8\uc801\uc73c\ub85c \uc9c0\uc6d0\ub418\ub294 xHE-AAC \ucf54\ub371\uc740 HLS \uc2a4\ud2b8\ub9ac\ubc0d\uc5d0 \ub300\ud55c 3\uac1c \uc138\uc158\uc5d0\uc11c \uc790\uc138\ud558\uac8c \ub2e4\ub904\uc84c\uc2b5\ub2c8\ub2e4.<\/p>\n<p>\u2018\ubcf4\ub2e4 \ub098\uc740 HLS \uc624\ub514\uc624 \uacbd\ud5d8 \uc81c\uacf5(Deliver a better HLS audio experience)\u2019\uc744 \uc8fc\uc81c\ub85c \uc9c4\ud589\ub41c \uc138\uc158\uc5d0\uc11c\ub294 \uc560\ud50c \uc2a4\ud2b8\ub9ac\ubc0d \ubbf8\ub514\uc5b4\ud300\uc758 \uc0ac\uc774\uba3c \uace8\ub4dc\ub808\uc774(Simon Goldrei)\uac00 \uac00\uc7a5 \ucd5c\uadfc\uc5d0 \ucd9c\uc2dc\ub41c MPEG AAC \uacc4\uc5f4 \uc624\ub514\uc624 \ucf54\ub371\uc774\uc790 HLS\uc5d0 \uc0c8\ub86d\uac8c \ub3c4\uc785\ub41c xHE-AAC\ub97c \uc18c\uac1c\ud588\uc2b5\ub2c8\ub2e4. \uace8\ub4dc\ub808\uc774 \ub2f4\ub2f9\uc790\ub294 xHE-AAC \uae30\ubc18 \uc2a4\ud2b8\ub9ac\ubc0d \uc11c\ube44\uc2a4\uc758 \uc624\ub514\uc624 \ube44\ud2b8\uc728\uc5d0 \ub300\ud55c \uc560\ud50c\uc758 \uad8c\uace0\uc0ac\ud56d\uc744 \uc804\ub2ec\ud558\uba70 \u201c\ucd5c\uc18c 24 kbit\/s\uc5d0\uc11c \uc2a4\ud14c\ub808\uc624\uc758 \uacbd\uc6b0 \ucd5c\ub300 160 kbit\/s\uae4c\uc9c0\u201d\ub77c\uace0 \ubc1d\ud614\uc2b5\ub2c8\ub2e4. \uc774\uc5b4 \ub300\uc5ed\ud3ed\uc774 \ub0ae\uc740 \ub124\ud2b8\uc6cc\ud06c\ub098 \ub370\uc774\ud130 \uc18d\ub3c4\uac00 \ub290\ub9b0 \uae30\uae30 \uc9c0\uc6d0 \ub4f1 xHE-AAC\uac00 \uc11c\ube44\uc2a4 \uc0ac\uc5c5\uc790\ub4e4\uc5d0\uac8c \uc81c\uacf5\ud558\ub294 \uc774\uc810\uc5d0 \ub300\ud574 \uc124\uba85\ud588\uc2b5\ub2c8\ub2e4.<\/p>\n<p>\ub2f4\ub2f9\uc790\ub294 \uadf8 \uc678\uc5d0\ub3c4 \uc74c\ub7c9 \ubc0f \ub3d9\uc801\ubc94\uc704\uc81c\uc5b4(DRC) \uba54\ud0c0\ub370\uc774\ud130\uc758 \uc911\uc694\uc131\uc5d0 \ub300\ud574 \uc5b8\uae09\ud588\uc2b5\ub2c8\ub2e4. MPEG-D DRC \ud45c\uc900\uc740 xHE-AAC\uc5d0 \uc77c\uc815\ud55c \uc74c\ub7c9\uc73c\ub85c \ucf58\ud150\uce20\ub97c \uc7ac\uc0dd\ud558\ub294 \uc74c\ub7c9\uc81c\uc5b4 \uae30\ub2a5\uc744 \uc81c\uacf5\ud569\ub2c8\ub2e4. \ubfd0\ub9cc \uc544\ub2c8\ub77c \ub3d9\uc801\ubc94\uc704\uc81c\uc5b4 \ucc98\ub9ac\ub97c \ud1b5\ud574 \uccad\ucde8 \ud50c\ub7ab\ud3fc\uc774\ub098 \ud658\uacbd\uc5d0 \uad00\uacc4\uc5c6\uc774 \ucd5c\uc0c1\uc758 \uc0ac\uc6a9\uc790 \uacbd\ud5d8\uc744 \uc120\uc0ac\ud569\ub2c8\ub2e4. \uace8\ub4dc\ub808\uc774 \ub2f4\ub2f9\uc790\ub294 \uac1c\ubc29\ud615 \ud45c\uc900\uc5d0 \ub300\ud55c \uc560\ud50c\uc758 \uc2e0\ub150\uc744 \uac15\uc870\ud558\uba70, \uc560\ud50c\uc758 \uad8c\uace0\uc0ac\ud56d\uc774 \uc2e0\uaddc ANSI\/CTA 2075 \ud45c\uc900(OTT \ubc29\uc1a1 \ubc0f \ubaa8\ubc14\uc77c\/\uace0\uc815 \uae30\uae30 \ub300\uc0c1 \uc628\ub77c\uc778 \uc601\uc0c1\ubc30\ud3ec\uc5d0 \uad00\ud55c \uc74c\ub7c9 \ud45c\uc900)\uc744 \ube44\ub86f\ud558\uc5ec, MPEG-DASH\uc640 HLS \uac04 \ubbf8\ub514\uc5b4 \uc778\ucf54\ub529\uc744 \uacb0\ud569\ud558\uace0\uc790 \ud558\ub294 CMAF(Common Media Application Format) \ud45c\uc900\uc5d0 \ubd80\ud569\ud55c\ub2e4\uace0 \ubc1d\ud614\uc2b5\ub2c8\ub2e4. \uc774\uc5b4 \u201c\uc5c5\uacc4 \uc804\ubc18\uc5d0 \uac78\uccd0 DRC\uac00 \uc810\uc810 \ubd80\uac01\ub418\uace0 \uc788\uc73c\ubbc0\ub85c, \uc11c\ube44\uc2a4 \uc0ac\uc5c5\uc790\ub4e4\uc774 DRC \uba54\ud0c0\ub370\uc774\ud130\ub97c \ud3ec\ud568\uc2dc\ud0a4\ub294 \uac83\uc774 \ubc14\ub78c\uc9c1\ud558\ub2e4\u201d\uace0 \ub367\ubd99\uc600\uc2b5\ub2c8\ub2e4.<\/p>\n<p>\uc138\uc158 \uc601\uc0c1:https:\/\/developer.apple.com\/videos\/play\/wwdc2020\/10158\/<\/p>\n<p>\uc560\ud50c \uc2a4\ud2b8\ub9ac\ubc0d \ubbf8\ub514\uc5b4\ud300\uc758 \uc218\ub808\uc2dc \ucf54\ud53c\uc138\ud2f0(Suresh Koppisetty)\uac00 \uc9c4\ud589\ud55c \u2018\uc560\ud50c\uc6cc\uce58 \uc2a4\ud2b8\ub9ac\ubc0d \uc624\ub514\uc624 \ucd5c\uc2e0\uae30\uc220(What\u2019s new in streaming audio for Apple Watch)\u2019 \uc138\uc158\uc5d0\uc11c\ub294 watchOS7\uc758 AVPlayer\uc5d0 xHE-AAC \ub514\ucf54\ub529\uc744 \ud0d1\uc7ac\uc2dc\ud0a4\ub294 \uacc4\ud68d\uc774 \uacf5\uac1c\ub418\uc5c8\uc2b5\ub2c8\ub2e4. \ucf54\ud53c\uc138\ud2f0 \ub2f4\ub2f9\uc790\ub294xHE-AAC \ud0d1\uc7ac \uc774\uc720\ub85c \u201c\ub0ae\uc740 \ube44\ud2b8\uc728\uc5d0\uc11c\ub3c4 \ub3d9\uc77c\ud55c \ud488\uc9c8\uc744 \uc81c\uacf5\ud558\uace0 \ud0c0 AAC \uacc4\uc5f4 \ucf54\ub371\uacfc \ub3d9\uc77c\ud55c \ube44\ud2b8\uc728\uc5d0\uc11c\ub294 \ub192\uc740 \ud488\uc9c8\uc744 \uc81c\uacf5\ud560 \uc218 \uc788\uae30 \ub54c\ubb38\u201d\uc774\ub77c\uace0 \ubc1d\ud614\uc2b5\ub2c8\ub2e4. \uc774\uc5b4, \ub124\ud2b8\uc6cc\ud06c \ud658\uacbd\uc5d0 \ubcc0\uc218\uac00 \ub9ce\uc740 \uc2a4\ub9c8\ud2b8\uc6cc\uce58\ub85c \uc2a4\ud2b8\ub9ac\ubc0d \uc2dc\uc5d0\ub294 \u201c\ucd5c\ub300\ud55c \ub0ae\uc740 \ube44\ud2b8\uc728\uc5d0\uc11c \uace0\ud488\uc9c8 \uc624\ub514\uc624 \ucf58\ud150\uce20\ub97c \uc81c\uacf5\ud558\ub294 \uac83\uc744 \ubaa9\ud45c\ub85c \ud574\uc57c \ud55c\ub2e4\u201d\uace0 \uc804\ud558\uba70 \u201c\ubaa8\ub4e0 \uc624\ub514\uc624 \uc790\uc0b0\uc744 xHE-AAC\ub85c \uc778\ucf54\ub529\ud560 \uac83\uc744 \uad8c\uace0\ud55c\ub2e4\u201d\uace0 \ub367\ubd99\uc600\uc2b5\ub2c8\ub2e4.<\/p>\n<p>\uc138\uc158 \uc601\uc0c1: https:\/\/developer.apple.com\/videos\/play\/wwdc2020\/10636<\/p>\n<p>\u2018HLS \ud234\uc744 \ud65c\uc6a9\ud55c \uc2a4\ud2b8\ub9bc \uc800\uc791 \uac1c\uc120\u2019\uc744 \uc8fc\uc81c\ub85c \ud55c \uc138\uc158\uc5d0\uc11c\ub294 \uc560\ud50c HLS \uc2a4\ud2b8\ub9ac\ubc0d\ud300\uc758 \uc5d0\ub9ad \ubca0\ub974\uc13c(Eryk Vershen)\uc774 \uac1c\ubc1c\uc790\ub4e4\uacfc \uc11c\ube44\uc2a4 \uc0ac\uc5c5\uc790\ub4e4\uc744 \ub300\uc0c1\uc73c\ub85c xHE-AAC \ubc0f \uba40\ud2f0\ucc44\ub110 \uc624\ub514\uc624 \ucf54\ub371\uc5d0 \ub300\ud574 \uc124\uba85\ud588\uc2b5\ub2c8\ub2e4. \ubca0\ub974\uc13c \ub2f4\ub2f9\uc790\ub294 \uc5b8\uc5b4\uc640 \ucc44\ub110 \ud658\uacbd\uc124\uc815\uc774 \ub2e4\uc591\ud55c \uc601\uc0c1 \ubc0f \uc624\ub514\uc624 \ucf58\ud150\uce20\ub85c \uad6c\uc131\ub41c HLS \ud50c\ub808\uc774\ub9ac\uc2a4\ud2b8\uc5d0\uc11c \uc774\ub4e4 \ucf54\ub371\uc744 \uc0ac\uc6a9\ud558\ub294 \ubc29\ubc95\uc744 \uc81c\uc2dc\ud588\uc2b5\ub2c8\ub2e4. \uc774\uc5b4, \uc0c8\ub86d\uac8c \ub3c4\uc785\ub41c SCORE \uc18d\uc131\uc744 \uc0ac\uc6a9\ud558\uc5ec xHE-AAC\ub85c \uc778\ucf54\ub529\ub41c \uc624\ub514\uc624 \ucf58\ud150\uce20\ub97c \ub808\uac70\uc2dc \ucf54\ub371 \ubc84\uc804\ubcf4\ub2e4 \uc6b0\uc120\uc21c\uc704\ud654\ud558\ub294 \ubc29\ubc95\uc744 \uacf5\uc720\ud588\uc2b5\ub2c8\ub2e4. \ubca0\ub974\uc13c \ub2f4\ub2f9\uc790\ub294 \uc138\uc158 \uc911 \uc2dc\uc5f0\uc5d0\uc11c \u201cUSAC(xHE-AAC)\ub294 \ub354 \ub098\uc740 \uc74c\uc9c8\uc744 \uc81c\uacf5\ud55c\ub2e4. USAC \uc7ac\uc0dd\uc774 \uc5b4\ub824\uc6b4 \uae30\uae30\uc5d0\uc11c\ub294 HE-AAC\ub9cc\uc744 \uc120\ud0dd\ud558\ub294 \uac83\uc774 \uc88b\ub2e4. \uc774\ub294 SCORE \uc18d\uc131\uc744 \ud1b5\ud574 \uc218\uc815 \uac00\ub2a5\ud558\ub2e4. USAC \ubcc0\ud615 \ucf54\ub371\ub4e4\uc740 \ub354 \ub192\uc740 \uc810\uc218\ub97c \uc8fc\uc5c8\uc73c\ubbc0\ub85c \uc774\ub4e4 \ucf54\ub371\uc744 \uad8c\uc7a5\ud55c\ub2e4. \uc774\ub97c \ud1b5\ud574 USAC\ub294 \uc0c1\ud638\ubc30\ud0c0\uc801\uc778 \ucf54\ub371\ucc98\ub7fc \uae30\ub2a5\ud560 \uc218 \uc788\ub2e4\u201d\uace0 \ub9d0\ud588\uc2b5\ub2c8\ub2e4.<\/p>\n<p>\uc138\uc158 \uc601\uc0c1: https:\/\/developer.apple.com\/videos\/play\/wwdc2020\/10225<\/p>\n<p><strong>xHE-AAC <\/strong><strong>\uc18c\uac1c<\/strong><\/p>\n<p>xHE-AAC\ub294 \uac00\uc7a5 \ucd5c\uadfc\uc5d0 \ucd9c\uc2dc\ub41c MPEG AAC \uacc4\uc5f4 \uc624\ub514\uc624 \ucf54\ub371\uc785\ub2c8\ub2e4. \ud504\ub77c\uc6b4\ud638\ud37c\ub294 xHE-AAC \ubc0f MPEG-D DRC \ud45c\uc900 \uac1c\ubc1c\uc5d0 \uc8fc\ub3c4\uc801\uc778 \uc5ed\ud560\uc744 \ud588\uc2b5\ub2c8\ub2e4. \uc804\ubb38\uac00\uc6a9 xHE-AAC \uc778\ucf54\ub354 \uc18c\ud504\ud2b8\uc6e8\uc5b4\ub294 <a href=\"https:\/\/www.iis.fraunhofer.de\/ko\/ff\/amm\/broadcast-streaming\/xheaac.html\" target=\"_blank\" rel=\"noopener noreferrer\">\ud504\ub77c\uc6b4\ud638\ud37c IIS\uc5d0\uc11c \uc9c1\uc811<\/a> \ub610\ub294 \uc2a4\ud2b8\ub9ac\ubc0d \uc7a5\ube44 \ud611\ub825\uc0ac\uc5d0\uc11c \uc81c\uacf5\ud558\uace0 \uc788\uc2b5\ub2c8\ub2e4. xHE-AAC \ubc0f MPEG-D DRC \ud2b9\ud5c8\ub294 AAC \ud2b9\ud5c8 \ub77c\uc774\uc120\uc2f1 \ud504\ub85c\uadf8\ub7a8\uc5d0 \ud3ec\ud568\ub418\uc5b4 \uc788\uc73c\uba70, \ucd94\uac00 \ube44\uc6a9 \uc5c6\uc774 VIA Licensing\uc5d0\uc11c \uc6b4\uc601\ud558\uace0 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<p><em>\ucc38\uace0<\/em><em>: <\/em><em>\ubcf8<\/em> <em>\ube14\ub85c\uadf8<\/em> <em>\ud3ec\uc2a4\ud2b8\uc5d0<\/em> <em>\ud3ec\ud568\ub41c<\/em> <em>\uc77c\ubd80<\/em> <em>\ub9c1\ud06c\ub294<\/em> <em>\ubc95\uc801<\/em> <em>\uc81c\ud55c\uc73c\ub85c<\/em> <em>\uc778\ud574<\/em> <em>\uc791\ub3d9\ud558\uc9c0<\/em> <em>\uc54a\uc744<\/em> <em>\uc218<\/em> <em>\uc788\uc2b5\ub2c8\ub2e4<\/em><em>. <\/em><em>\ud574\ub2f9<\/em> <em>URL<\/em><em>\uc5d0<\/em> <em>\uc811\uc18d\ud558\uc2dc\ub824\uba74<\/em> <em>\ub9c1\ud06c<\/em> <em>\ubcf5\uc0ac<\/em> <em>\ud6c4<\/em> <em>\ube0c\ub77c\uc6b0\uc800\uc758<\/em> <em>\uc8fc\uc18c\ucc3d\uc5d0<\/em> <em>\ubd99\uc5ec\ub123\uae30<\/em> <em>\ud558\uc5ec<\/em> <em>\uc8fc\uc2ed\uc2dc\uc624<\/em><em>.<\/em><\/p>\n<p>Header image \u00a9 VAKSMANV \u2013 stock.adobe.com<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\uc62c\ud574 \uc560\ud50c \uc138\uacc4\uac1c\ubc1c\uc790\ud68c\uc758\uc5d0\uc11c\ub294 \uc560\ud50c \uae30\uae30\uc758 HLS \uc2a4\ud2b8\ub9ac\ubc0d\uc744 \ub2e4\ub8e8\ub294 \ucd1d 3\uac1c \uc138\uc158\uc5d0\uc11c xHE-AAC\uac00 \uc18c\uac1c\ub418\uc5c8\uc2b5\ub2c8\ub2e4.<\/p>\n","protected":false},"author":14,"featured_media":4987,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[120],"tags":[420,413],"class_list":["post-5949","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-products-technologies-ko","tag-mpeg-d-drc-ko","tag-xhe-aac-ko"],"_links":{"self":[{"href":"https:\/\/www.audioblog.iis.fraunhofer.com\/ko\/wp-json\/wp\/v2\/posts\/5949"}],"collection":[{"href":"https:\/\/www.audioblog.iis.fraunhofer.com\/ko\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.audioblog.iis.fraunhofer.com\/ko\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.audioblog.iis.fraunhofer.com\/ko\/wp-json\/wp\/v2\/users\/14"}],"replies":[{"embeddable":true,"href":"https:\/\/www.audioblog.iis.fraunhofer.com\/ko\/wp-json\/wp\/v2\/comments?post=5949"}],"version-history":[{"count":4,"href":"https:\/\/www.audioblog.iis.fraunhofer.com\/ko\/wp-json\/wp\/v2\/posts\/5949\/revisions"}],"predecessor-version":[{"id":5953,"href":"https:\/\/www.audioblog.iis.fraunhofer.com\/ko\/wp-json\/wp\/v2\/posts\/5949\/revisions\/5953"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.audioblog.iis.fraunhofer.com\/ko\/wp-json\/wp\/v2\/media\/4987"}],"wp:attachment":[{"href":"https:\/\/www.audioblog.iis.fraunhofer.com\/ko\/wp-json\/wp\/v2\/media?parent=5949"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.audioblog.iis.fraunhofer.com\/ko\/wp-json\/wp\/v2\/categories?post=5949"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.audioblog.iis.fraunhofer.com\/ko\/wp-json\/wp\/v2\/tags?post=5949"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}