{"id":14715,"date":"2023-03-08T17:21:07","date_gmt":"2023-03-08T09:21:07","guid":{"rendered":"http:\/\/139.9.1.231\/?p=14715"},"modified":"2024-12-16T09:39:21","modified_gmt":"2024-12-16T01:39:21","slug":"encodec-high-fidelity-neural-audio-compression","status":"publish","type":"post","link":"http:\/\/139.9.1.231\/index.php\/2023\/03\/08\/encodec-high-fidelity-neural-audio-compression\/","title":{"rendered":"EnCodec: High Fidelity Neural Audio Compression"},"content":{"rendered":"\n<p class=\"has-text-align-center has-light-gray-background-color has-background\"><strong><em>GitHub\uff1a<a href=\"https:\/\/github.com\/facebookresearch\/encodec\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/github.com\/facebookresearch\/encodec<\/a><\/em><\/strong><\/p>\n\n\n\n<p class=\"has-text-align-center has-light-blue-background-color has-background\"><strong><em>Paper\uff1a<a href=\"https:\/\/arxiv.org\/abs\/2210.13438\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/arxiv.org\/abs\/2210.13438<\/a><\/em><\/strong><\/p>\n\n\n\n<p>\u9ad8\u4fdd\u771f\u795e\u7ecf\u7f51\u7edc\u97f3\u9891\u7f16\u7801\u5668:<\/p>\n\n\n\n<p>\u672c\u6587\u4ecb\u7ecd\u4e86meta\u63a8\u51fa\u7684\u97f3\u9891AI Codec\uff0c\u5176\u6574\u4f53\u98ce\u683c\u6df1\u53d7Google\u7684SoundStream\u7684\u5f71\u54cd\u3002\u5728\u5176\u5f71\u54cd\u4e0b\u6539\u8fdb\u4e86\u539f\u6709\u7684\u9274\u522b\u5668\uff0c\u5f15\u5165\u8bed\u8a00\u6a21\u578b\u8fdb\u4e00\u6b65\u964d\u4f4e\u7801\u7387\uff0c\u5e76\u63d0\u51fa\u4e86\u4e00\u79cd\u63d0\u5347\u7a33\u5b9a\u6027\u7684\u8bad\u7ec3\u7b56\u7565\u3002<\/p>\n\n\n\n<ul><li>\u4e0e\u4e4b\u524d\u7684AI Codec\u7684\u52a8\u673a\u76f8\u540c\uff0c\u672c\u6587\u540c\u6837\u5e0c\u671b\u501f\u52a9\u6df1\u5ea6\u5b66\u4e60\u8bbe\u8ba1\u4e00\u6b3e\u7aef\u5230\u7aef<strong>\u591a\u7801\u7387<\/strong>\u3001<strong>\u7acb\u4f53\u58f0<\/strong>\u97f3\u9891\u7f16\u7801\u5668\uff0c\u5b9e\u73b0\u5bf9\u8bed\u97f3\u548c\u97f3\u4e50\u7684<strong>\u4f4e\u7801\u7387<\/strong>\u538b\u7f29\u5e76<strong>\u9ad8\u8d28\u91cf<\/strong>\u8fd8\u539f\u3002<\/li><li>\u795e\u7ecf\u7f51\u7edc\u5929\u7136\u7684\u62bd\u8c61\u7279\u5f81\u63d0\u53d6\u80fd\u529b\u4f7f\u5176\u5177\u6709\u76f8\u6bd4\u4f20\u7edf\u7f16\u7801\u5668\u66f4\u5f3a\u7684\u4fe1\u53f7\u8868\u5f81\u538b\u7f29\u80fd\u529b\uff0c\u4f4e\u7801\u7387\u7684\u95ee\u9898\u76f8\u5bf9\u5e76\u4e0d\u56f0\u96be\uff1b<\/li><li>\u96be\u70b9\u4e3b\u8981\u6709\u4e24\u70b9\uff1a1. \u97f3\u9891\u7684\u52a8\u6001\u8303\u56f4\u8fc7\u5927\uff1b2. \u6a21\u578b\u6548\u7387\u95ee\u9898(\u8ba1\u7b97\u590d\u6742\u5ea6\u548c\u53c2\u6570\u91cf)<\/li><\/ul>\n\n\n\n<p>\u672c\u6587\u8d21\u732e\uff1a<\/p>\n\n\n\n<ul><li>\u4e3a\u89e3\u51b3\u97f3\u9891\u52a8\u6001\u8303\u56f4\u8fc7\u5927\u7684\u95ee\u9898\uff0c\u4f7f\u7528\u5e9e\u5927\u591a\u6837\u7684\u8bad\u7ec3\u96c6\u4ee5\u53ca\u7528\u9274\u522b\u5668\u4f5c\u4e3a\u611f\u77e5\u635f\u5931(\u8fd9\u70b9\u4f3c\u4e4e\u76f8\u6bd4SoundStream)\u4e5f\u5e76\u672a\u89c1\u6709\u4ec0\u4e48\u7a81\u7834\uff1b<\/li><li>\u9650\u5236\u5728\u5355\u6838CPU\u4e0a\u5b9e\u65f6\u8fd0\u884c\uff0c\u5e76\u91c7\u7528\u6b8b\u5dee\u77e2\u91cf\u91cf\u5316(Residual Vector Quantization, RVQ)\u63d0\u9ad8\u7f16\u7801\u6548\u7387\uff1b<\/li><li>\u63d0\u51fa\u4e86\u8bed\u8a00\u6a21\u578b\u8fdb\u4e00\u6b65\u964d\u4f4e\u7801\u7387\uff1b<\/li><li>\u9274\u522b\u5668\u91c7\u7528\u591a\u5206\u8fa8\u7387\u590d\u6570\u8c31STFT\u9274\u522b\u5668\uff1b<\/li><li>\u63d0\u51fa\u4e86\u4e00\u79cdbalancer\u4ee5\u4fdd\u8bc1GAN\u8bad\u7ec3\u7684\u7a33\u5b9a\u6027<\/li><\/ul>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1024\" height=\"550\" src=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/03\/image-11-1024x550.png\" alt=\"\" class=\"wp-image-14723\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/03\/image-11-1024x550.png 1024w, http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/03\/image-11-300x161.png 300w, http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/03\/image-11-768x412.png 768w, http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/03\/image-11.png 1403w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>\u6a21\u578b\u91c7\u7528\u7684\u57fa\u4e8eGAN\u7684\u6a21\u578b\uff0c\u751f\u6210\u5668\u91c7\u7528\u65f6\u57df\u7f16\u7801\u5668-\u91cf\u5316\u5668-\u89e3\u7801\u5668\u7ed3\u6784\uff0c\u9274\u522b\u5668\u91c7\u7528\u591a\u5206\u8fa8\u7387\u7684STFT\u9274\u522b\u5668\u3002<\/p>\n\n\n\n<p><strong>\u7f16\u89e3\u7801\u5668<\/strong>\uff1a\u7f16\u89e3\u7801\u5668\u91c7\u7528SEANET\uff0c\u7f16\u7801\u5668\u7531\u4e00\u5c42\u4e00\u7ef4\u5377\u79ef\u5bf9\u65f6\u57df\u6ce2\u5f62\u8fdb\u884c\u7279\u5f81\u63d0\u53d6\u540e\u7ecf\u8fc7B\u4e2a\u7528\u4e8e\u964d\u91c7\u6837\u7684\u6b8b\u5dee\u5355\u5143(\u5373convolurion blocks)\uff0c\u800c\u540e\u52a0\u5165\u4e86\u4e24\u5c42LSTM\u7528\u4e8e\u5e8f\u5217\u5efa\u6a21\uff0c\u6700\u540e\u7ecf\u8fc7\u4e00\u5c42\u5377\u79ef\u5f97\u5230\u97f3\u9891\u7684\u6f5c\u5728\u8868\u5f81\u3002\u89e3\u7801\u5668\u5219\u662f\u7f16\u7801\u5668\u7684\u955c\u50cf\uff0c\u5176\u4e2d\u6b8b\u5dee\u5355\u5143\u7684\u5377\u79ef\u88ab\u66ff\u6362\u4e3a\u53cd\u5377\u79ef\u7528\u4e8e\u4e0a\u91c7\u6837\u3002\u6839\u636e\u6587\u4e2d\u91c7\u7528\u7684\u4e0b\u91c7\u6837\u56e0\u5b50(\u901a\u8fc7\u5377\u79ef\u7684stride\u5b9e\u73b0){2,4,5,8}\uff0c\u5176\u7f16\u7801\u5668\u5c06\u97f3\u9891\u4e0b\u91c7\u6837320\u500d(2x4x5x8=320)\uff0c\u5373<strong>\u4f20\u8f93\u7684\u4e00\u5e27\u4e2d\u538b\u7f29\u4e86320\u500d\u91c7\u6837\u70b9\uff0c\u56e0\u6b64\u5728\u91c7\u6837\u7387\u4e3a24kHz\u65f61s\u7684\u97f3\u9891\u7ecf\u7f16\u7801\u5668\u8f93\u51fa\u7684\u65f6\u95f4\u7ef4\u6570\u4e3a24000\/320=75\uff0c48kHz\u65f6\u4e3a48000\/320=150\u3002\u901a\u8fc7\u5377\u79ef\u7684Padding\u548c\u8c03\u6574Nomalization\u53bb\u8bbe\u7f6e\u6a21\u578b\u662f\u5426\u6d41\u5f0f\u3002<\/strong><\/p>\n\n\n\n<p><strong>\u91cf\u5316\u5668<\/strong>\uff1a<strong>\u91cf\u5316\u5668\u91c7\u7528\u6b8b\u5dee\u77e2\u91cf\u91cf\u5316RVQ\uff0c\u5173\u4e8eRVQ\u7684\u8be6\u7ec6\u4ecb\u7ecd\u53c2\u770b[<a href=\"https:\/\/zhuanlan.zhihu.com\/p\/578548777#ref_1\">1]<\/a>\u548c[<a href=\"https:\/\/zhuanlan.zhihu.com\/p\/578548777#ref_2\">2]<\/a>\u3002\u6bcf\u4e2a\u7801\u4e66\u5305\u542b1024\u4e2a\u5411\u91cf(entries)\uff0c\u5bf9\u4e8e\u91c7\u6837\u7387\u4e3a24kHz\u7684\u97f3\u9891\uff0c\u6700\u591a\u4f7f\u752832\u4e2a\u7801\u4e66\uff0c\u5373\u6700\u5927\u7801\u7387\u4e3a32xlog_2(1024)\/13.3=24kbps\u3002\u4e3a\u4e86\u652f\u6301\u591a\u7801\u7387\uff0c\u8bad\u7ec3\u8fc7\u7a0b\u4e2d\u7801\u4e66\u6570\u91cf\u88ab\u8bbe\u7f6e\u4e3a{2,4,8,16,32}\uff0c\u5206\u522b\u5bf9\u5e94<em>1.5kbps<\/em>,3kbps,6kbps,12kbps,24kbps\uff1b\u4e14\u6bcf\u4e2a\u7801\u7387\u5728\u8bad\u7ec3\u65f6\u6240\u4f7f\u7528\u7684\u9274\u522b\u5668\u662f\u4e0d\u540c\u7684\u3002<\/strong><\/p>\n\n\n\n<p><strong>\u8bed\u8a00\u6a21\u578b\u548c\u71b5\u7f16\u7801<\/strong>\uff1a\u6b64\u90e8\u5206\u53ef\u9009\uff0c\u4f7f\u7528Transormer\u8bed\u97f3\u6a21\u578b\u5bf9RVQ\u5f97\u5230\u7684\u7d22\u5f15\u6620\u5c04\u5230\u65b0\u9690\u85cf\u7a7a\u95f4\u7684\u6982\u7387\u5206\u5e03\uff0c\u5bf9\u5bf9\u5e94\u6982\u7387\u5bc6\u5ea6\u51fd\u6570\u7684\u7d2f\u79ef\u5206\u5e03\u51fd\u6570\u8fdb\u884cRange Coder\u71b5\u7f16\u7801\uff0c\u4ece\u800c\u8fdb\u4e00\u6b65\u964d\u4f4e\u7801\u7387\u3002<\/p>\n\n\n\n<p><strong>\u9274\u522b\u5668<\/strong>\uff1a\u77ed\u65f6\u5085\u7acb\u53f6\u53d8\u6362\uff08STFT\uff09\u3002\u91c7\u7528\u591a\u5206\u8fa8\u7387\u590d\u6570STFT\u9274\u522b\u5668\uff0c\u800c\u975eTTS\u4e2d\u5e38\u89c1\u7684\u591a\u5206\u8fa8\u7387Mel\u8c31\u9274\u522b\u5668\uff0c\u4e5f\u6ca1\u52a0Multiple-period \u9274\u522b\u5668MPD(\u6d88\u878d\u5b9e\u9a8c\u663e\u793a\u591a\u5206\u8fa8\u7387\u590d\u6570STFT\u9274\u522b\u5668\u6027\u80fd\u66f4\u4f18\uff0c\u989d\u5916\u5f15\u5165MPD\u6709\u5c11\u91cf\u6027\u80fd\u63d0\u5347\uff0c\u4f46\u8003\u8651\u8bad\u7ec3\u65f6\u957f\u820d\u5f03)\u3002\u6bcf\u4e2a\u5206\u8fa8\u7387\u7684\u9274\u522b\u5668\u6709\u4e8c\u7ef4\u5377\u79ef\u7ec4\u6210\uff0c\u7ed3\u6784\u5982\u56fe\u6240\u793a(\u6ce8\u610f\uff1a\u5176\u4e2d\u6b63\u6587\u548c\u56fe\u4e2d\u7684\u5377\u79ef\u6838\u5c3a\u5bf8\u4e0d\u4e00\u81f4\uff0c3&#215;8 v.s. 3&#215;9)\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1024\" height=\"354\" src=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/03\/image-12-1024x354.png\" alt=\"\" class=\"wp-image-14725\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/03\/image-12-1024x354.png 1024w, http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/03\/image-12-300x104.png 300w, http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/03\/image-12-768x266.png 768w, http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/03\/image-12.png 1413w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>\u9274\u522b\u5668\u91c7\u7528hinge loss\u8bad\u7ec3\uff0c\u4e3a\u4fdd\u8bc1\u751f\u6210\u5668\u548c\u9274\u522b\u5668\u8bad\u7ec3\u5e73\u8861\u7a33\u5b9a\uff0c\u9274\u522b\u5668\u4ee52\/3\u7684\u6982\u7387\u66f4\u65b0\u5176\u53c2\u6570<\/p>\n\n\n\n<p>\u751f\u6210\u5668\u7684\u635f\u5931\u51fd\u6570\uff1a\u5305\u62ec\u91cd\u6784\u635f\u5931\u3001\u611f\u77e5\u635f\u5931(\u5b9e\u4e3a\u5bf9\u6297\u635f\u5931)\u4ee5\u53caRVQ\u7684commitment loss\u4e09\u90e8\u5206\uff0c<strong>\u91cd\u6784\u635f\u5931<\/strong>\u5305\u62ec\u65f6\u57df\u548c\u9891\u57df\u4e24\u90e8\u5206\uff0c\u65f6\u57df\u635f\u5931\u662f\u6ce2\u5f62\u7684L1\u635f\u5931\uff0c\uff0c\u9891\u57df\u635f\u5931\u662f\u591a\u65f6\u95f4\u5c3a\u5ea6\u7684Mel\u8c31\u635f\u5931\uff0c<strong>\u5bf9\u6297\u635f\u5931<\/strong>\u91c7\u7528hinge loss\u548c\u7279\u5f81\u5339\u914d\u635f\u5931\u3002<strong>commitment loss<\/strong>\u7528\u4e8e\u4f7fVQ\u9009\u62e9\u7684\u5411\u91cf\u6ee1\u8db3\u91cf\u5316\u540e\u7684\u53d8\u91cf\u4e0e\u672a\u91cf\u5316\u7684\u53d8\u91cf\u95f4\u6700\u76f8\u8fd1\uff0c\u91c7\u7528\u6b27\u5f0f\u8ddd\u79bb\u5ea6\u91cf<\/p>\n\n\n\n<p>\u6570\u636e\u589e\u5e7f\u7b56\u7565\uff1a\u591a\u6570\u636e\u6e90\u6df7\u5408\uff1b\u52a0\u6df7\u54cd\uff1b\u97f3\u91cf\u6807\u51c6\u5316\u5e76\u968f\u673a\u5316\u589e\u76ca-10\uff5e6 dB\uff1b\u65e0clip<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1024\" height=\"824\" src=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/03\/image-13-1024x824.png\" alt=\"\" class=\"wp-image-14729\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/03\/image-13-1024x824.png 1024w, http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/03\/image-13-300x241.png 300w, http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/03\/image-13-768x618.png 768w, http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/03\/image-13.png 1456w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h4 class=\"has-light-gray-background-color has-background\">Demo\u754c\u9762\uff1a<\/h4>\n\n\n\n<p>1\u3001 <a href=\"https:\/\/github.com\/facebookresearch\/encodec\">https:\/\/github.com\/facebookresearch\/encodec<\/a><\/p>\n\n\n\n<p>2\u3001<a href=\"https:\/\/ai.honu.io\/papers\/encodec\/samples.html\">https:\/\/ai.honu.io\/papers\/encodec\/samples.html<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>GitHub\uff1ahttps:\/\/github.com\/facebookresearch\/encodec Pape &hellip; <a href=\"http:\/\/139.9.1.231\/index.php\/2023\/03\/08\/encodec-high-fidelity-neural-audio-compression\/\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb<span class=\"screen-reader-text\">EnCodec: High Fidelity Neural Audio Compression<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[34],"tags":[],"_links":{"self":[{"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/posts\/14715"}],"collection":[{"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/comments?post=14715"}],"version-history":[{"count":18,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/posts\/14715\/revisions"}],"predecessor-version":[{"id":23018,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/posts\/14715\/revisions\/23018"}],"wp:attachment":[{"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/media?parent=14715"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/categories?post=14715"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/tags?post=14715"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}