M4A → AMR

Tahurihia Tō M4A Tuhinga o mua AMR kōnae ngawari

Tīpakohia ō kōnae

Ka tangohia rānei ā-rānei ōna doke ki konei

Whakahaua: 1 Ka whakawhitinga/ora · Kāore i te whakawhāiti →

Tahurihia kia 1 GB ngā kōnae mō te kore utu, ka taea e ngā kaiwhakamahi Pro te tahuri ki te 100 GB ngā kōnae; Waitohu inaianei

Tukuatu ana

Me pēhea te huri M4A Tuhinga o mua AMR

Hipanga 1: Tukuatu tō M4A ngā kōnae mā te whakamahi i te pātene i runga ake nei, mā te tōia me te whakataka rānei.

Hipanga 2: Pāwhiritia te pātene 'Tahuri' hei tīmata i te tahuritanga.

Hipanga 3: Tikiake i tō mea kua tahurihia AMR kōnae

M4A Tuhinga o mua AMR Ngā Pātai Auau mō te Tahuritanga

He pēhea te tahuri i a au i te M4A oro ki te AMR me te kore e ngaro te āhuatanga?

Whakataki i te M4A me te kaiwhakarere e kōwhiri ana i te AMR codec me te bitrate hei ōrite ki te pūtake. Ko te AMR kore ngaro (WAV / FLAC / ALAC) e pupuri ana i ia tauira i te pēhi-pēhi; ko te AMR ngaro (MP3 / AAC / OGG / Opus) he pūmau ki te 192 kbps e mārama ana mō te nuinga o ngā oro. Kei roto i te M4A te AAC i te nuinga o nga take, Apple Lossless rānei (ALAC) ina puta mai i tētahi tāruatanga kore. 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.

He whakawhitinga te M4A ki te AMR he porowhita tuarua o te whakawhāiti ngaro?

Heoi, ā, e tika ana te whakarite i te taha. He ngaro nga āhuahira e rua, nā reira ko te AMR 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 AMR mai i tērā, ka ārai katoa i te whakawhitinga rua.

Ka ora te whakarerekētanga M4A ki AMR o nga taitara rererangi me te whakaahua o te pūrākau?

Kāore i te tīariari. M4A e mau ana i tētahi kōwae metadata tika, engari AMR kāore he wāhi paerewa mō te kaitapere, pūrākau, tau rererangi, toi rānei, nā reira ka whakawāteatia ngā tohu i te kore e whakawāteatia. Whakataki te M4A hei tārua tohu, whakahōu rānei i muri mai me tētahi utauta pēnei i te Mp3tag, MusicBrainz Picard rānei. 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.

He aha e pā ana ki te oropū pūoro maha ina tahuri M4A ki AMR?

Ka whakaroatia ki raro ki te stereo, nā te mea kāore he āhuatanga ā-maha o AMR. Ka whakamahia e te whakarōpūtanga ngā taupū paerewa kia mārama ai te whakawhitinga pūwāhi-pūwāhi, ā, ka whakarōpūtia ngā rohe i te taumata iti iho. Ka ngaro te mea katoa i runga i te tauwāhi pūwāhi motuhake ina puta mai.

He aha te take kāore e tahuri ana ētahi o a ahau M4A?

DRM. He pūrere ā-roto o ngā pūranga M4A kua whakawaeheretia e te puna, te pūmanawa rānei i tukuna, ā, kāore e taea te whakawaehere i te oro whakawaeheretia e tētahi kaiwhakarere. Ko ngā mea katoa i whakawāteatia e koe, i whakatata, i hoko rānei me te kore parenga, ka huri noa; kāore e hoko te hoko ā-kōrero. E rua nga mea rerekē e whakawāteatia ana e M4A i muri i tētahi whakaroanga — AAC ngaro me ALAC kore ngaro — ā, kāore te tautoko ā-Apple i te ōrite.

He aha te āhua o te pūoro i roto i tēnei tahuritanga?

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 utauta i roto. Kāore e taea te whakaora i ngā auautanga kāore i te ngaro - kāore anō kia waihangatia i te tuatahi.

He aha te bitrate ka whakamahia e te AMR te hua o te faila?

Ko te pūmau ko te 192 kbps mō te ngaro AMR; whakawhitinga mō te kore ngaro AMR. Whakapae ki te 320 kbps mō te pūoro, 96 kbps rānei mō te reo / podcast. Ko te kōwhiringa e whakawhiti ana i te rahi o te pūranga ki te pono whakarongo; i raro iho i te 96 kbps ka kitea ngā huamanu ngaro i runga i te pūoro.

Ka whakaitihia te āhua o tōku pūoro mai i te M4A ki te AMR?

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

E pupuri ana te M4A ki te AMR kaiwhakarere i ngā tohu ID3 / metadata?

He — e ako ana te taitara, te kaitapere, te pūrākau, te tau, te tau rererangi, me te whakaahua pūrākau mai i te M4A me te tuhi ki te AMR i reira e tautoko ana te hanga i ngā tohu. Ko ngā ūnga katoa (MP3, AAC, FLAC, OGG) e whakahaere tika ana i ngā tohu; kāore i te WAV raw. Ko te AMR he Āhuatanga-maha-whakahaere, te pūkōrero kōrero 3GPP i whakaritea mō ngā whakarongo reo GSM me ngā pūkōrero reo poho.

Ka taea e au te tahuri i ngā rau o ngā pūranga M4A ki AMR?

He — ka tangohia he pūranga o ngā pūranga M4A ki roto, ā, ka tukatuka i a rātou i te whakarara. He nui ake ngā kaimahi whakarara o te utu, ā, kāore he tauine tauine-whakahaere, nā reira ka oti te rōpū 500-file i roto i ngā minu, kaua i ngā tekau minu.

Ka pupuri te AMR i te ōritetanga tauira pēnei i te M4A?

Mā te pūmau, ā, — 48 kHz M4A e noho ana ki te 48 kHz i roto i AMR. Mēnā e hiahiatia ana e koe te whakaiti hei ōritetanga (96 kHz → 44.1 kHz mō te pūngao CD), ka hoatu te kōwhiringa ā-tauira ki te whakarerekētanga o te āhua o te waeine tiketike i roto i te whakawhitinga waehere ōrite.

Ka taea e au te whakarerekē i te pūoro ina tahuri M4A ki AMR?

He — ka hoatu e te kōwhiringa pūnoa-pūnoa te pūnoa ITU-R BS.1770 / EBU R128 ki te AMR, e ūnga ana ki -14 LUFS (paerewa rerenga), -16 LUFS rānei (paerewa podcast). Ka whai hua ina whakawātea ngā whakarerekētanga i ngā taumata rerekē.

M4A

M4A Ko te hōputu kōnae ororongo e te piri tata ki MP4. Ka tukuna he kohinga ororongo kounga teitei me te tautoko mo nga metadata, e pai ana mo nga momo tono.

AMR

Ko te AMR (Adaptive Multi-Rate) he whakatakotoranga puoro ororongo kua arotauhia mo te whakawaehere korero. Ka whakamahia i roto i nga waea pukoro mo nga rekoata reo me te purei oro.