AMR ndi mawu codec tuned kwa mawu zomvetsera ndi mafoni, amene ndi chifukwa chimene nyimbo zoimba zoipa mu izo.
Ntchito Zofala
Voice recordings
Mobile audio
Telephony
AMR Mafunso Ofunsidwa Kawirikawiri Okhudza Kusintha kwa Anthu
Kodi ndi fayilo ya AMR?
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AMR (Adaptive Multi-Rate) is an audio format optimized for speech compression.
Kodi kuchuluka kwabwino kwatha kuwonongeka m'fayilo ya AMR?
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Chokhacho chomwe encoder yakale idaganiza zochotsa, ndipo sichingathe kubwezeretsedwanso. AMR imatulutsa popanga zomwe nkhope sizingawone - zowoneka bwino zokhala pansi pa zowoneka bwino, ma frequencies pa maziko a kumvetsera - ndi kuzichotsa mwamsanga. Pa bitrate yolimba yomwe siyimadziwika kwa anthu ambiri. Zimene sizosinthika, chifukwa chake kusinthidwa ku mtundu wopanda kusowa kumateteza dziko latsopano kuposa kubwezeretsa mtundu woyamba. AMR ndi narrowband mawu codec kuyendetsa pakati pa 4.75 ndi 12.2 kbps, modeling munthu woimba m'mimba kuposa wonse audio spectrum.
Nchifukwa chiyani kujambula kwa AMR kumawoneka kocheperako poyerekeza ndi nyimbo?
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Chifukwa sichiyenera kubweretsa nyimbo. AMR ndi codec ya mawu yokhala ndi bandwidth yafupi yopangidwa kuti igwiritse ntchito pa netiweki ya foni yam'manja, yosinthidwa kuti ipange mawu omvetsa bwino pa bitrate yowerengedwa mu kilobits ya digito imodzi. Zonse zomwe zili m'mphepete mwa mawu a munthu zimathetsedwa nthawi yotenga. Kusintha kwa mtundu wa full-range kumateteza kujambula kwa ntchito zonse, koma sichingathe kuwonjezeranso ma frequencies omwe sanasampilidwe. AMR amawononga nyimbo: yake 8 kHz bandwidth amachotsa zonse pamwamba foni ma frequencies, ndi palibe ndalama ya re-encoding amabweretsa izo kumbuyo.
Kodi ndi komwe ma fayilo a AMR amachokera?
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Mafoni a Voicemail, Push-to-Talk Radios, Old Handset ndi Telephony Recording - kulikonse Audio anayenera kuyenda pa m'mphepete mwa mchenga, mtengo kwambiri channel.That chikhalidwe amafotokoza awiri chifukwa chiyani mavidiyo ndi ochepa ndi chifukwa chake iwo akuoneka mmene iwo achita.Kusintha amawapangitsa kusewera mu mapulogalamu otchuka; si, ndipo sakhoza, kuwonjezera khalidwe la khalidwe la kulandira sanali. AMR ndi Adaptive Multi-Rate, mawu codec 3GPP standardized kwa GSM mawu kulankhula ndi mafoni mawu olemba.
Kupatulapo ngati zinthu zina zimafuna kuti zichotsedwe. Formatiyo imangotsegulidwa, ndipo palibe vuto la kusintha archive yomwe siyikuyambitsa mavuto, koma sikuti ndi komweko kumene ma tool kapena efficiency akuyenda. Kwa chilichonse chokhudzana ndi zinthu zatsopano, formati yatsopano siyimawononga ndalama zowonjezera ndipo imateteza ku mafunso ena a m'tsogolomu zaka zingapo zapitazo.
Nchifukwa chiyani fayilo ya AMR siyidzasewera mu browser yanga?
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Mawebusayiti amachotsa mndandanda wafupi, wokhazikika wa ma audio formats ndi AMR ndi kunja kwa izo, kotero fayilo imatsitsa pamalo osewera kapena wosewerayo amadziwitsa vuto. Makompyuta a desktop ndi sewero la codec lokulirapo limatsegula popanda vuto. Ngati ma audio amayenera kusewera patsamba la webusaiti, kusinthidwa kwake ndi kusinthidwa - palibe kuwongolera kwa wosewerayo kuwonjezera decoder yomwe msakatuli satumiza.
Kodi ndiyenera kusintha bwanji mafayilo anga a AMR?
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Kugwirizana ndi malo osankhidwa, si cholinga. Kwa nyimbo, 256 mpaka 320 kbps ndi zosaoneka kwa aliyense womvetsera; kwa mawu ndi podcasts, 96 mpaka 128 kbps ndi zambiri ndipo amadula fayilo ku theka. Kulemba mawu kudzera pa ma bitrate ochokera kumawononga malo - amasunga mawu omwe kale apita ku lossy pass ndipo sabwezeretsa chilichonse chomwe chimatulutsidwa ndi wolemba mawu woyamba.
Kodi kugwiritsa ntchito AMR kumafunikira chilolezo cha patent?
Kodi kusintha kumasintha kuchuluka kwa sampling ya AMR audio yanga?
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Sichoncho ngati simukupempha kuti ichite zimenezi. Kusintha kumasunga mitengo ya machitidwe a m'mawu ochokera - 48 kHz imakhala 48 kHz, 44.1 kHz imakhala 44.1 kHz - chifukwa kubwezeretsa machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe a m'machitidwe
Kodi ndingasinthe dzina la chidacho popeza AMR sichisintha?
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Kwambiri nthawi zonse, ndipo ndi bwino kumvetsa chifukwa chake: kuwonjezeka ndi label, pamene bytes m'maganizo ndi zopangidwa kwa mtundu wina mfundo. Kusintha dzina amapanga fayilo amene dzina lake amalonjeza chinachake za zinthu zake sikuti kubweretsa, ndi zimene amatsegula izo kapena amakana fayilo kapena misreads izo. Mmodzi waukulu kulephera ndi awiri mtundu amene ndi weniweni wofanana wonyamula pansi pa dzina losiyana - ndi ngakhale pamenepo bwino rewrap ndi chitetezo kuposa kusintha dzina.
Kodi chimachitika chiyani kwa fayilo yanga ya AMR pambuyo posintha?
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Kutsitsa ndi zotsatira zosinthidwa zimakhazikika pa server yathu kwa maola 24, zomwe zimasiya nthawi yotsitsa zotsatira, ndipo zimatulutsidwa ndi kuchotsa kwaotomatiki. Kusinthanitsa kumachitika pa HTTPS m'mitundu yonse. Palibe amene amawerenga zomwe zili, palibe chomwe chimawerengedwa, ndipo palibe chomwe chimapita kwa wina aliyense.
