Sinthani MP3 ku Opus

Ndikukhulupirira kuti ndinu oyenera, ndipo ndibwino kuti mupange. Mafomu awiriwa ndi owonongeka, choncho Opus encoder akuchita ntchito kuchokera ku audio yomwe yakhala ikuyenda mwa psychoacoustic pass, ndipo masankho ake oyamba amapanga gawo loyamba. Pa 192 kbps kapena pamwambapa, zotsatirazi ndizosawoneka bwino kwa ambiri owerenga. Ngati muli ndi master yopanda kusowa, kulemba koyamba kwa Opus kuchokera ku yomwe imalepheretsa kupita kwachiwiri kwathunthu. MP3 ndi lossy: psychoacoustic model amachotsa ma frequencies kuti nkhope sizingayembekezere kuti adziwe, makamaka pa 128 mpaka 320 kbps. Opus imasintha kuchokera pa mawu a 6 kbps mono kupita ku nyimbo za 510 kbps stereo m'njira yomweyo ya bitstream ndipo imasintha mo awtomatika.

Nthawi zambiri sichoncho. MP3 imasinthidwa ndi chilichonse, kuphatikizapo magalimoto agalimoto ndi osewera okalamba; Opus amafunikira mapulogalamu omwe amadziwa codec, omwe nthawi zambiri amakhala ndi zida zosagwirizana. Ngati malo osankhidwa ndi stereo yagalimoto kapena wosewera wonyamula, ndiye kuti ndi chitsimikizo cholimba chokhala pa MP3. Opus siyimathandizidwa ndi zida zokhazokha - ganizirani kuti ndi pulogalamu yosewera, ndipo muyembekezere kuti ma stereo agalimoto azisiya kuganizira.

Default ndi 192 kbps kwa lossy Opus; pass-through kwa lossless Opus. Kusintha kwa 320 kbps kwa audiophile kapena 64-96 kbps kwa mawu olankhula audiobooks (owoneka bwino kwa mawu, amadula kukula kwa fayilo).

Ngati MP3 ndi lossy ndipo Opus ndi lossless (mwachitsanzo MP3 → WAV), fayilo ya Opus si yabwino kuposa MP3 - simungathe kubwezeretsa zambiri zomwe zatulutsidwa. Ngati MP3 ndi lossless ndipo Opus ndi lossy, yembekezerani kuti codec ya Opus ibwezeretse; pa 192 kbps izi ndi zosawoneka bwino kwa zinthu zambiri.

Ndikoyenera - dzina, woimba, album, chaka, mndandanda wa nyimbo, album art, ndi masamba olemba (ofunika kwambiri kwa audiobooks) amawerengedwa kuchokera ku MP3 ndipo amalemba mu Opus wokhala ndi Opus mtundu umathandizira ma tag. M4B audiobook structure round-trips into M4B and AAX → M4B output.

Yai - chotsani fayilo ya MP3 ndikuwapanga mofanana. Premium ili ndi ogwira ntchito ambiri mofanana ndi malire a fayilo, kotero fayilo ya 500-file batch imatha m'maola angapo osati m'maola angapo.

Mwachidule ndi yemweyo (48 kHz MP3 → 48 kHz Opus). Ngati mukufuna kuchepetsa kusamvana kwa kugwirizana (mwachitsanzo 96 kHz → 44.1 kHz kwa kulemba CD) kusankha kwa kusamvana kwamphamvu kumachita izi ndi kusamvana kwabwino.

Ndiye — njira yosintha mawu imagwiritsa ntchito ITU-R BS.1770 / EBU R128 yosintha mawu ku Opus, yolenga -14 LUFS (mtengo wosinthira), -16 LUFS (mtengo wosinthira podcast), kapena -23 LUFS (mtengo wosinthira audiobook).

MP3 amasewera padziko lonse. AAC amasewera pa Apple, ambiri Android, Sonos. FLAC amasewera pa Sonos ndi Android, osachepera bwino pa zaka zakale iPods. M4B audiobooks kusewera ndi bokosi la navigation pa iOS Buku, Audiobookshelf, ndi Smart Audiobook Player.

Ndikoyenera - mafayilo a MP3 omwe amatulutsidwa amachitidwa m'mabungwe osiyana ndi omwe amagwira ntchito ndipo amachotsa m'maola ochepa. Sitimasewera, sitisunga kapena sitigawana zolemba za audio.

Kusinthanso kwa codec yomweyo: 10-30 masekondi. Kusinthanso kwa codec yosiyana: nthawi zambiri 10-20% ya nthawi yoyambira, kotero buku la mawu la maola 10 limatha m'maola 60-120. Mapepala olemba nkhani amapita patsogolo ndi kugawidwa bwinobwino.