Tahuri AMR Tuhinga o mua M4A

Heoi, ā, e tika ana te whakarite i te taha. He ngaro nga āhuahira e rua, nā reira ko te M4A encoder e mahi ana 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 māngai kore ngaro i tētahi wāhi, ka whakakōrerotia te M4A mai i tērā, ka kore e taea te whakawhiti i te whakawhitinga rua katoa. 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 oro 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 anō, kia tika ai te pūranga pūoro me te kore e whakawhiti 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.

Nā te mea he pūkōrero kōrero tētahi taha o te pūkōrero, ehara i te pūkōrero pūoro. E tauira ana i te pūkōrero tangata, ā, ka 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 awhe 8 kHz ngā mea katoa i runga ake i ngā auautanga tātari, ā, kāore he nui o te whakakōrerotanga e hoki ana ki a ia.

Ko te pūmau ko te 192 kbps mō te ngaro M4A; whakawhitinga mō te kore ngaro M4A. Whakapae ki te 320 kbps mō te pūoro, 64-96 kbps rānei mō ngā pukapuka oro kōrero (whakaahua mō te reo, he haurua te rahi o te pūranga).

Mēnā he ngaro te AMR ā, he kore ngaro te M4A (hei tauira, MP3 → WAV), kāore te M4A faila i te pai ake i te AMR — kāore e taea e koe te whakaora i ngā mōhiohio kua whakawāteatia. Mēnā he kore ngaro te AMR ā, he ngaro te M4A, e tūmanako ana te M4A codec ki te whakawhāiti anō; i te 192 kbps he mārama tēnei mō te nuinga o ngā ihirangi.

He — ko te taitara, te kaitapere, te pūrākau, te tau, te tau, te tau rererangi, te toi pūrākau, me ngā tohu wāhanga (he hira mō ngā pukapuka oro) e ako ana mai i te AMR, ā, ka tuhituhi ki roto i te M4A tapawhā i te āhua o te M4A e tautoko ana i ngā tohu. Ko te hanganga pukapuka oro M4B e haere tata ana ki te M4B me te AAX → M4B huaputa.

He — Ka tangohia he pūrākau o ngā pūranga AMR ki roto, ā, ka whakamātautau mātou i a rātou i te whakarara. He nui ake ngā kaimahi whakatata o te Premium, ā, kāore he tauine tauine-whakahaere, nā reira ka oti te rōpū 500-file i roto i ngā minu, kaua ko ngā tekau minu.

Mā te pūmau, ā, (48 kHz AMR → 48 kHz M4A). Mēnā e hiahiatia ana e koe te whakaiti i te tauira mō te ōritetanga (hei tauira, 96 kHz → 44.1 kHz mō te pūngao CD) ka mahi tēnei te kōwhiringa tauira ā-whakapaina ki te whakawātea ā-whakapaina.

Hei — ka hoatu e te kōwhiringa pūnoa-pūnoa te pūnoa ITU-R BS.1770 / EBU R128 ki te huaputa M4A, e ūnga ana ki -14 LUFS (paerewa rerenga), -16 LUFS (paerewa podcast), -23 LUFS rānei (paerewa pukapuka oro). Ka whai hua ki te tahuri i ngā whakarerekētanga rerekē o ngā rerekētanga.

Ka whakapāpāho te MP3 i te ao whānui. Ka whakapāho te AAC i runga i te Apple, te nuinga o te Android, Sonos. Ka whakapāho te FLAC i runga i te Sonos me te Android, he iti iho te pai i ngā iPods tawhito. Ka whakapāho ngā pukapuka oro M4B me te whakaterenga wāhanga i runga i ngā pukapuka iOS, Audiobookshelf, me te kaiwhakaari Audiobook Smart. Kei roto i ngā kōwhiringa hōhonu ko ngā whakaritenga o mua o te pūrere.

Yes — uploaded AMR files are processed in isolated workers and deleted within minutes. We never play, store, or share the audio content. Especially important when working with personal audiobook libraries.