Tahuri AMR Tuhinga o mua M4A

Mā te pūmau, ā, ka noho te pūmau, ka mau te mokatere tauira taketake (44.1 kHz, 48 kHz, ērā atu mea) ki te huaputa M4A.

Ka taea e koe te tahuri i te M4A ki AMR i tēnei pae. Mēnā he ngaro te āhua o tētahi o ngā āhua e pā ana, kāore te haerenga paetata i te iti-whakatika, ahakoa he tata tonu, he mārama rānei.

Ko ngā whakaritenga pūmau e ūnga ana ki te mātauranga pāohotanga / tīwae - e ōrite ana ki te pūtake mō te nuinga o ngā kaitirotiro. Mō te whakamahinga pūranga, kōwhiria te kōwhiringa mātauranga tiketike rawa i roto i ngā whakaritenga tahuri.

Heoi, ā, e whai tikanga ana te whakarite i te taha. He ngaro nga āhuahira e rua, nā reira ka mahi te M4A encoder mai i te oro, kua puta kētia e tētahi whakawhitinga psychoacoustic, ā, ko ōna whakataunga anō e whakakotahi ana i te tautuhi tuatahi. I te 192 kbps, i runga ake rānei i te hua, he mārama tonu te hua mō te nuinga o te whakarongo. Mēnā kei a koe tētahi matua kore ngaro i tētahi wāhi, ka whakakōrerotia te M4A mai i tērā, ka ārai katoa i te whakawhitinga rua. Ko te AMR he pūkōrero kōrero whāiti e haere ana i waenganui i te 4.75 me te 12.2 kbps, e tauira ana i te whakawhitinga reo tangata i te wā o te pūoro pūoro katoa. Kei roto i te M4A te AAC i te nuinga o nga take, Apple Lossless rānei (ALAC) ina puta mai i tētahi tāruatanga kore.

Heoi, ā, he whiwhinga tūturu i runga i te AMR, kāore he wāhi e whakawhirinaki ana ki te rokiroki i tētahi o ia. M4A e mau ana i te taitara, te kaitapere, te pūrākau, te tau, te tau rererangi me te toi kāwai i roto i te kāwai, kia tika ai te pūranga pūoro me te kore e haere i te kāwai. Ka pupuri te M4A i ngā metadata āhua iTunes, ngā wāhanga me ngā mahi toi, ā, ko te āhua oro māori i runga i ngā pūrere Apple katoa.

He pūrere me te orooro i roto i a ia, kaua ko te orooro i tōna ake. Ko taua apa tāpiri ko te wāhi e pupuritia ai te roanga, te taupū rapu me ngā metadata e tautuhia ana e te āhua, kia mōhio ai te kaitapere ki te roa o tētahi M4A i mua i te whakakōrerotanga o tētahi tāruatanga kotahi, kaua e whakataki i te faila katoa hei kitea. Ko te tikanga hoki kāore te whakaroatanga i te whakatau i te mea e āhua nei: he maha ngā pūrere o tēnei momo e whakaaetia ana kia nui ake i tētahi momo orooro, ko te take e rua ai ngā pūkete M4A ka rerekē te whanonga i te wā e kitea ana i waho.

Kāore tētahi e hiahiatia ana kia whakaaro koe. Ko te pūkōrero e taupokitia ana e ngā pūtake whakawhiwhinga, ā, ka whakaritea te whakaaetanga e te tangata e whakarewa ana i te whakarerekētanga - te pūkoro, te whakataki, te pūnaha whakahaere - i mua i te tae atu o te pūkōrero ki a koe. Ko te take o te āhua i ngā wāhi katoa i roto i ngā pūrere, ā, ko te take i hangaia ai ngā whirinoa kore utu. Kāore e huri i te tahuritanga o tētahi pūkōrero kua whaitia e koe, ā, he pātai ora anake mēnā e whakarewa ana e koe tētahi whakarerekētanga.

Nā te mea he pūkōrero kōrero tētahi taha o te pūkōrero pūoro, kaua ko tētahi pūkōrero pūoro. Ka tauiratia e ia te āhua o te āhua o te tangata me te whakakore i ngā mea katoa i waho o te awhe whatunga, he pai mō te pūrongo reo, he tūkino hoki mō ngā mea katoa me ngā pūrere i roto. Kāore e taea te whakaora i ngā auautanga kāore i te ngaro - kāore anō kia waihangatia i te tuatahi. Ka whakangaromia e AMR te pūoro: ka tangohia e tōna 8 kHz te awhe katoa i runga ake i ngā auautanga tātari, ā, kāore he nui o te whakakōrerotanga e hoki ana ki a ia.

I puta mai i a Apple, ā, ka tū i reira. M4A ko te mea i whakataua e te papatono Pūoro me te iTunes Store, ko te take ko te pūmautanga i ia pūrere Apple, ko te take e ako ana te whakaroanga hei Apple - engari ko te whakamāramatanga i raro iho he paerewa tūwhera, ā, ko ia pūrere, kaitiaki, pūmatua kaitiaki me te kaipāpāho pāpāho o nāianei e ako ana. Kāore he mea hei whakatū, ā, kāore he pūmanawa Apple e pā ana ki te whakaputa i tētahi i tēnei wāhi. Ko te M4A he pūrere MP4 e mau ai te oro anake, ā, ko te mea e whakaputaina ana e iTunes, Apple Music me te taupānga iPhone Voice Memos.

Ko ngā tāurunga ā-whakaahua kua whakawhāititia i te pūtake nui; ko ngā pūkete wātea i whakaingoatia e whiwhi ana i tētahi taumata tiketike ake, ā, kāore he tepe-tokotahi o ngā pūkete Pro. Ko te pūmahara whakahura te āhua o te āhua o te āhua o te whakawhāititanga i mua i te whakawhāititanga o tātau tauwāhi pāpāho.

He. He maha ngā pūkete AMR i roto i tētahi tāpiritanga — ka whakamātautau te whakarerekē i a rātou i te taha kotahi, ā, ka hoki mai i tētahi ZIP o ngā hua M4A. Kāore e hiahiatia kia tāpiri anō te hipanga tāpiritanga mō ia pūkete.