Sinthani AMR ku MP3

Ndikukhulupirira kuti ndinu oyenera, ndipo ndibwino kuti mupange. Mafomu awiriwa ndi owonongeka, choncho MP3 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 MP3 kuchokera ku yomwe imalepheretsa kupita kwachiwiri kwathunthu. AMR ndi narrowband mawu codec kuyendetsa pakati pa 4.75 ndi 12.2 kbps, modeling munthu woimba m'mimba kuposa wonse audio spectrum. MP3 ndi lossy: psychoacoustic model amachotsa ma frequencies kuti nkhope sizingayembekezere kuti adziwe, makamaka pa 128 mpaka 320 kbps.

Yes, ndipo ndi cholinga chabwino kuposa AMR, amene ali ndi kulikonse otsimikiza kuti abwezeretse chilichonse cha izo. MP3 amachita mutu, woimba, album, chaka, track number ndi embedded cover art mu chomeracho, kotero nyimbo laibulale amapereka bwino popanda manual kupita. Sichoncho beats MP3 kwa kugwirizana - car stereos, gym zida, DAPs ndi zaka makumi awiri hardware onse kuwerenga izo popanda funso.

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

Mavidiyo ambiri m'modzi ntchito ayenera kulipira ndondomeko. Free kugwiritsa ntchito ndi imodzi wapamwamba pa kusintha, imodzi kusintha pa ola. Pa ndondomeko yolipira mukhoza kuwonjezera angapo owona kuti ntchito imodzi, ndiye download zotsatira zonse pamodzi kapena onse awo mu ZIP imodzi.

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

Sichingakhale m'njira imeneyi. Wosintha alibe kukhazikitsa loudness ndi kuchoka pa gawo monga momwe zilili. Kuti atenge mbali ya volume, kuyendetsa MP3 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.

Palibe munthu amamvetsera kapena kugawana audio, zomwe ndi zofunika kwa anthu audiobook mabuku, ndi uploaded AMR owona ndi awo anasinthidwa zidutswa zimasungidwa mwamsanga za 24 maola pambuyo kusintha.