La compa\u00f1\u00eda Google ha publicado la versi\u00f3n 1.3 del c\u00f3dec de audio Lyra, dise\u00f1ado para lograr una alta calidad en la transmisi\u00f3n de voz bajo condiciones de ancho de banda limitado. La calidad de voz a tasas de bits de 3.2 kbps, 6 kbps y 9.2 kbps utilizando el c\u00f3dec Lyra es aproximadamente comparable a las tasas de bits de 10 kbps, 13 kbps y 14 kbps al usar el c\u00f3dec Opus. Para abordar este desaf\u00edo, adem\u00e1s de los m\u00e9todos convencionales de compresi\u00f3n de audio y procesamiento de se\u00f1ales, Lyra utiliza un modelo de voz basado en sistemas de aprendizaje autom\u00e1tico para reconstruir la informaci\u00f3n faltante en funci\u00f3n de caracter\u00edsticas t\u00edpicas del habla. La implementaci\u00f3n de referencia est\u00e1 escrita en C++ y se distribuye bajo la licencia Apache 2.0. <\/p>\n
A diferencia de la versi\u00f3n 1.2 redise\u00f1ada radicalmente lanzada en octubre, que fue trasladada a una nueva arquitectura de red neuronal, la versi\u00f3n 1.3 ha optimizado el modelo de aprendizaje autom\u00e1tico sin cambios arquitect\u00f3nicos. En esta nueva versi\u00f3n, para almacenar los pesos y realizar operaciones aritm\u00e9ticas, se utilizan enteros de 8 bits en lugar de n\u00fameros de punto flotante de 32 bits, lo que ha reducido el tama\u00f1o del modelo en un 43% y acelerado su funcionamiento en un 20% durante las pruebas en el smartphone Pixel 6 Pro. La calidad de la voz se ha mantenido al mismo nivel, aunque el formato de los datos transmitidos ha cambiado y no es compatible con versiones anteriores. \u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Google \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b\u0430 \u0432\u044b\u043f\u0443\u0441\u043a \u0430\u0443\u0434\u0438\u043e\u043a\u043e\u0434\u0435\u043a\u0430 Lyra 1.3, \u043d\u0430\u0446\u0435\u043b\u0435\u043d\u043d\u043e\u0433\u043e \u0434\u043e\u0441\u0442\u0438\u0436\u0435\u043d\u0438\u0435 \u0432\u044b\u0441\u043e\u043a\u043e\u0433\u043e \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0430 \u043f\u0435\u0440\u0435\u0434\u0430\u0447\u0438 \u0433\u043e\u043b\u043e\u0441\u0430 \u0432 \u0443\u0441\u043b\u043e\u0432\u0438\u044f\u0445 \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u043d\u043e\u0433\u043e \u043e\u0431\u044a\u0451\u043c\u0430 \u043f\u0435\u0440\u0435\u0434\u0430\u0432\u0430\u0435\u043c\u043e\u0439 \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u0438. \u041a\u0430\u0447\u0435\u0441\u0442\u0432\u043e \u0440\u0435\u0447\u0438 \u043d\u0430 \u0431\u0438\u0442\u0440\u0435\u0439\u0442\u0430\u0445 3.2 kbps, 6 kbps \u0438 9.2 kbps \u043f\u0440\u0438 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0438 \u043a\u043e\u0434\u0435\u043a\u0430 Lyra \u043f\u0440\u0438\u043c\u0435\u0440\u043d\u043e \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u0435\u0442 \u0431\u0438\u0442\u0440\u0435\u0439\u0442\u0430\u043c 10 kbps, 13 kbps \u0438 14 kbps \u043f\u0440\u0438 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0438 \u043a\u043e\u0434\u0435\u043a\u0430 Opus. \u0414\u043b\u044f \u0440\u0435\u0448\u0435\u043d\u0438\u044f \u043f\u043e\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u043d\u043e\u0439 \u0437\u0430\u0434\u0430\u0447\u0438 \u043f\u043e\u043c\u0438\u043c\u043e \u043e\u0431\u044b\u0447\u043d\u044b\u0445 \u043c\u0435\u0442\u043e\u0434\u043e\u0432 […]<\/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-105529","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\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\udd47Actualizaci\u00f3n del c\u00f3dec de audio abierto Lyra 1.3 | ProHoster","description":"La compa\u00f1\u00eda Google ha publicado la versi\u00f3n 1.3 del c\u00f3dec de audio Lyra, dise\u00f1ado para lograr una alta calidad en la transmisi\u00f3n de voz bajo condiciones de ancho de banda 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Fuente: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"