AMR ndi mawu codec tuned kwa mawu zomvetsera ndi mafoni, amene ndi chifukwa chimene nyimbo zomvetsera osauka 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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AMR compresses ndi modeling zimene nkhope sadzaona - chisoni maganizo ozungulira pansi olimba, ma frequencies pa malire a kumvetsera - ndi mwamsanga kuchotsa izo. Pa bitrate bwino kuti ndi inaudible kwa pafupifupi aliyense. zimene sizosatheka ndi reversible, kotero kusintha kuti lossless mtundu amateteza dziko latsopano kuposa kubwezeretsa oyambirira. 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 ma netiweki a mafoni, 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.
Nchifukwa chiyani fayilo yanga AMR imawonekera popanda dzina la track kapena ntchito yachikhalidwe?
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AMR idafotokozedwa m'mawu okha, popanda malo oyenera kwa mutu, album kapena chithunzi chachithunzi, kotero osewera amabwereranso kukuwonetsa dzina la fayilo. Kusintha kwa mtundu wokhala ndi tag ndi zomwe zimapangitsa kuti laibulale ikhale yosakata - ma tag amalemba nthawi yosintha, osati kubwezeretsedwa, kotero yembekezerani kuwonjezera chilichonse chomwe chimachokera.
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 layikulu 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 fayiloyo ku theka. Kulemba mawu kudzera pa ma bitrate ochokera kumawononga malo - amasunga mawu omwe kale apita kudzera pa lossy pass ndipo sabwezeretsa chilichonse chomwe chimatulutsidwa ndi wolemba mawu woyamba.
Kodi kugwiritsa ntchito AMR kumafunikira chilolezo cha patent?
