A empresa Google lan\u00e7ou uma atualiza\u00e7\u00e3o do codec de \u00e1udio Lyra 0.0.2, otimizado para alcan\u00e7ar a m\u00e1xima qualidade de transmiss\u00e3o de voz ao usar canais de comunica\u00e7\u00e3o muito lentos. O codec foi aberto no in\u00edcio de abril, mas era fornecido em conjunto com uma biblioteca matem\u00e1tica propriet\u00e1ria. Na vers\u00e3o 0.0.2, essa limita\u00e7\u00e3o foi corrigida e uma substitui\u00e7\u00e3o aberta foi criada para a biblioteca mencionada \u2014 sparse_matmul, que assim como o pr\u00f3prio codec \u00e9 distribu\u00eddo sob a licen\u00e7a Apache 2.0. Entre outras melhorias, destaca-se a possibilidade de utilizar o sistema de build Bazel com o compilador GCC, e esta combina\u00e7\u00e3o sendo utilizada por padr\u00e3o no Linux em vez de Bazel+Clang. <\/p>\n
Vale lembrar que, em termos de qualidade na transmiss\u00e3o de dados de voz em baixas velocidades, o Lyra supera significativamente os codecs tradicionais que utilizam m\u00e9todos de processamento digital de sinais. Para alcan\u00e7ar uma alta qualidade na transmiss\u00e3o de voz em condi\u00e7\u00f5es de volume de informa\u00e7\u00e3o transmitida limitado, al\u00e9m dos m\u00e9todos convencionais de compress\u00e3o de \u00e1udio e transforma\u00e7\u00e3o de sinais, o Lyra aplica um modelo de fala baseado em um sistema de aprendizado de m\u00e1quina, que permite recriar informa\u00e7\u00f5es faltantes com base nas caracter\u00edsticas t\u00edpicas da fala. O modelo utilizado para a gera\u00e7\u00e3o de som foi treinado com v\u00e1rias milhares de horas de grava\u00e7\u00f5es de vozes em mais de 70 idiomas. O desempenho da implementa\u00e7\u00e3o proposta \u00e9 suficiente para codificar e decodificar voz em tempo real em smartphones de gama m\u00e9dia, com uma lat\u00eancia de transmiss\u00e3o de sinal em torno de 90 milissegundos. \u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Google \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b\u0430 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 \u0430\u0443\u0434\u0438\u043e\u043a\u043e\u0434\u0435\u043a\u0430 Lyra 0.0.2, \u043e\u043f\u0442\u0438\u043c\u0438\u0437\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0433\u043e \u0434\u043b\u044f \u0434\u043e\u0441\u0442\u0438\u0436\u0435\u043d\u0438\u044f \u043c\u0430\u043a\u0441\u0438\u043c\u0430\u043b\u044c\u043d\u043e\u0433\u043e \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0430 \u043f\u0435\u0440\u0435\u0434\u0430\u0447\u0438 \u0440\u0435\u0447\u0438 \u043f\u0440\u0438 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0438 \u043e\u0447\u0435\u043d\u044c \u043c\u0435\u0434\u043b\u0435\u043d\u043d\u044b\u0445 \u043a\u0430\u043d\u0430\u043b\u043e\u0432 \u0441\u0432\u044f\u0437\u0438. \u041a\u043e\u0434\u0435\u043a \u0431\u044b\u043b \u043e\u0442\u043a\u0440\u044b\u0442 \u0432 \u043d\u0430\u0447\u0430\u043b\u0435 \u0430\u043f\u0440\u0435\u043b\u044f, \u043d\u043e \u043f\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u043b\u0441\u044f \u0432 \u043f\u0440\u0438\u0432\u044f\u0437\u043a\u0435 \u043a \u043f\u0440\u043e\u043f\u0440\u0438\u0435\u0442\u0430\u0440\u043d\u043e\u0439 \u043c\u0430\u0442\u0435\u043c\u0430\u0442\u0438\u0447\u0435\u0441\u043a\u043e\u0439 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0435. \u0412 \u0432\u0435\u0440\u0441\u0438\u0438 0.0.2 \u0434\u0430\u043d\u043d\u044b\u0439 \u043d\u0435\u0434\u043e\u0441\u0442\u0430\u0442\u043e\u043a \u0443\u0441\u0442\u0440\u0430\u043d\u0451\u043d \u0438 \u0434\u043b\u044f \u0443\u043a\u0430\u0437\u0430\u043d\u043d\u043e\u0439 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 \u0441\u043e\u0437\u0434\u0430\u043d\u0430 \u043e\u0442\u043a\u0440\u044b\u0442\u0430\u044f \u0437\u0430\u043c\u0435\u043d\u0430 — sparse_matmul, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043a\u0430\u043a \u0438 \u0441\u0430\u043c \u043a\u043e\u0434\u0435\u043a \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u044f\u0435\u0442\u0441\u044f […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-100668","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47A 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Fonte: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"