AMR → OGG

Ndikukhulupirira kuti ndinu oyenera, ndipo ndibwino kuti mupange. Mafomu awiriwa ndi owonongeka, choncho OGG 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 kuwonongeka, kulemba koyamba kwa OGG kuchokera ku yomwe imalepheretsa kupitanso koyamba. AMR ndi narrowband mawu codec kuyendetsa pakati pa 4.75 ndi 12.2 kbps, modeling munthu woimba m'mimba kuposa wonse audio spectrum. Vorbis m'ma OGG ndi lossy ndi amagwiritsa ntchito kusinthasintha bitrate mwa kuipa, kotero ubwino ndi kuika monga mbali kuposa fixed kbps figure.

Yes, ndipo ndi cholinga chabwino kuposa AMR, amene ali ndi kulikonse otsimikiza kuti abwezeretse chilichonse cha izo. OGG amachita mutu, woimba, album, chaka, track number ndi embedded cover art mu chomeracho, kotero nyimbo laibulale amapereka bwino popanda manual kupita. OGG Vorbis amadula MP3 pa bitrate yofanana ndi kunyamula palibe ndalama licensing, chifukwa chake masewera injini ndi open-source mapulogalamu anatenga izo wholesale.

Nthawi zambiri sichoncho. AMR imasinthidwa ndi chilichonse, kuphatikizapo magalimoto agalimoto ndi osewera okalamba; OGG 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 AMR. OGG ali woipa hardware thandizo - car stereos, zakale iPods ndi TV ambiri sadzaona fayilo pa zonse.

Chifukwa chimodzi mwazigawo zake ndi codec ya mawu kuposa codec ya nyimbo. Imakhala ndi maonekedwe a munthu woimba ndipo imachotsa chilichonse m’mbali mwa bandwidth ya foni, chomwe ndi choyenera kwa mawu olemba mawu komanso chowononga kwa chilichonse chomwe chili ndi zida. Kusintha kuchokera pa izo sikungabwezeretse ma frequencies osakhudzidwa — iwo sanali kusinthidwa pamalo oyamba. AMR amawononga nyimbo: yake 8 kHz bandwidth amachotsa zonse pamwamba foni ma frequencies, ndi palibe ndalama ya re-encoding amabweretsa izo kumbuyo.

Ngati AMR ndi lossy ndipo OGG ndi lossless (mwachitsanzo MP3 → WAV), OGG si yabwino kuposa AMR — simungathe kubwezeretsa zambiri zomwe zatulutsidwa. Ngati AMR ndi lossless ndipo OGG ndi lossy, OGG codec imabwezeretsa; pa 192 kbps zotsatira zake ndi zosawoneka bwino kwa zinthu zambiri.

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Mwa default yes — 48 kHz AMR imakhala 48 kHz mu OGG. Ngati mukufuna kuchepetsa kusamvana kwa ma CD (96 kHz → 44.1 kHz kwa kulemba CD), kusankha kwa kusamvana kwa ma CD kumagwiritsa ntchito kusamvana kwabwino kwambiri panthawi yolemba ma CD.

Sichingakhale m'njira imeneyi. Wosintha alibe kukhazikitsa loudness ndi kuchoka pa gawo monga momwe zilili. Kuti atenge mbali ya volume, kuyendetsa OGG kumaliza mwa njira Normalize chida pa webusaitiyi.

MP3 amasewera pafupifupi kulikonse. AAC amasewera pa Apple zipangizo, ambiri Android foni ndi Sonos. FLAC amasewera pa Sonos ndi Android koma si pa zaka za m'ma iPods, ndi WAV amasewera pa pafupifupi chilichonse koma amachititsa mavidiyo akulu. Palibe chipangizo presets pa nkhaniyi, choncho kusankha chitukuko format wanu wosewera mpira amathandiza.