MP2 is the audio layer that predates MP3, still used in digital radio and broadcast because decoding is cheap and robust.
Ngā Whakamahinga Noa
Broadcast audio
DVD audio
Legacy media
MP2 Ngā Pātai Auau mō te Tahuritanga
He aha te MP2?
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MP2 (MPEG-1 Audio Layer II) is an audio format commonly used in digital broadcasting.
He nui te āhuatanga kua ngaro i roto i tētahi pūranga MP2?
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Ko te mea katoa i whakatau te kaikōrero taketake ki te whakakore, ā, kāore e taea te whakaora. MP2 Ka whakawhāiti mā te tauira i te mea kāore e kitea e te roro — ngā oro mārō e noho ana i raro i ngā oro nui, ngā auautanga i te taha o te whakarongo — ā, ka tangohia tūturu. I tētahi bitrate ora kāore e taea te whakarongo ki te tata ki te katoa. Ko te mea kāore e taea te whakarerekē, nā reira ka tiaki i te āhua o nāianei ki tētahi āhua kore ngaro i te wā o nāianei i te whakaora i te taketake. He ngaro te MP2 engari he ngāwari ake te whakamahi i tētahi tātari pūtea i te MP3, i te nuinga o te wā e haere ana i te 192 ki te 384 kbps.
He aha te pūmanawa pāohotanga me te tuhituhi e whakahau ana ki MP2?
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Nā te mea i hangaia te mekameka katoa ki runga i a ia. Ko ngā pūnaha whakapāpāho, ngā utauta tuhi DVD me ngā pūnaha whakawhanake i whakapūtātia i te taha o tēnei āhua i te wā o tēnei wā, ā, kāore e whakapūtātia anō ngā pūrere me te wā o te ratonga whai hua e rua tekau tau. Ko ngā pūranga e puta mai ana i ēnei pūnaha ko te āhua o te pūnaha i hangaia hei tuku, ehara i te kōwhiringa i hangaia e tētahi tangata i tēnei wā. He tino kaha te MP2 ki ngā hapa ira, he ngāwari hoki te whakawaenga, ko te take i noho ai ngā mekameka whakawhitinga i runga i a ia i muri i te tae atu o te MP3.
He aha te take i puta ai te tātau pūranga MP2 me te kore ingoa rererangi, mahi toi rānei?
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Nā te mea kāore he wāhi e pupuri ai i a rātou te āhua. MP2 i tautuhia i te āhua o te oro, kāore he wāhi paerewa mō tētahi taitara, tētahi pūrākau, tētahi whakaahua papa rānei, nā reira ka hoki ngā kaiwhakaari ki te whakaatu i te ingoa faila. Ko te tahuri ki tētahi āhua tohu ko te mea e whakataki ana i tētahi puna — ka tuhituhitia ngā tohu i te wā o te tahuritanga, kaua i te whakaora, nō reira e tūmanako ana kia oti i tētahi mea kāore i mau i te pūtake. E hiahiatia ana e MP2 he nui ake te mokatere bit i te MP3, i te AAC rānei mō te āhuatanga ōrite, ā, kāore e mōhiotia ana ki te nuinga o ngā pūmanawa kaiwhakaari.
Me tiaki tonu ahau i ngā pūranga hōu hei MP2?
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Ahakoa rā, mēnā e hiahiatia ana e tētahi mea ki raro iho. Ka tuwhera tonu te āhua, ā, kāore he tūpatotanga mō te tahuri i tētahi pūranga kāore e take ana i ngā raruraru, engari kāore anō kia haere te utauta, te tōtika rānei. Mō tētahi mea hōu, kāore he utu tāpiri o te āhua o nāianei, ā, ka ārai i te porowhita o tēnei pātai i ētahi tau mai i tēnei wā.
Ka taea e tētahi MP2 te mau i tētahi 5.1 ngāwari?
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He — e whakahaere tika ana te āhuahanga i ngā pūkana neke atu i te rua, nā reira ka pupuri te whakakotahitanga ā-rohe i tōna whakaritenga pūkana, kaua e whakaroa ki te pūrere i te huarahi. Mēnā ka whakarongo rātau ki te whakaroa, ka whakawhirinaki ki te mutunga tawhiti: ka whakakōrerotia e te kaiwhiwhi ngā pūkana katoa, ka whakarōpūtia e te pūkoro i te wā whakataetae. Ka whakarerekētia ki tētahi āhuahira-pūrere anake ka noho tonu te whakaroa.
He mea hira rānei he toru tekau tau te MP2?
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Ko te pakeketanga anake ehara i te raruraru — he maha ngā āhuahira mai i taua wā e pai tonu ana, i te mea kua tekau tau te whakatinana i a rātou. Ko te mea e hiahiatia ana ko te wā: he pūranga iti, he pūkaha iti, kāore he whatunga, me ngā āhuatanga kāore e hiahiatia ana e tētahi. Ki te āhua tonu o ēnei whakaaro, he pai te āhuahira. Ki te kore rātau, ko te take ki te tahuri. Ko te MP2 te MPEG-1 Audio Layer II, te apa i mua i te MP3, a, ka noho te paerewa oro mō te whakataka DVB me te DAB.
He aha te take kāore e whakaata ana tētahi MP2 i roto i tōku whakataki?
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Ko ngā kaiwhaiwhai e whakakōrero ana i tētahi rārangi poto, pūmau o ngā āhua reo, ā, ko MP2 i waho o ia, nā reira ka whakakōrerotia te faila i te wā o te whakapāpāhotanga, i te pūpāho rānei i te pūrongo o tētahi hapa. Ka whakatuwheratia e ngā pūmanawa papamuri me tētahi tautuhi codec whānui ake te whakatū i te raruraru. Mēnā me whakapāpāho te oro i runga i tētahi pouwāhi whatunga, ko te tahuritanga te whakatūtū — kāore he whakaritenga kaiwhakaari e tāpiri ana i tētahi whakakōrero kāore i te whakapāpāhotia e te kaiwhaiwhai.
He aha te bitrate me tahuri au i a ahau i a ahau MP2?
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E ōrite ana ki te ūnga, ehara i te pūtake. Mō te pūoro, he mārama te 256 ki te 320 kbps ki te tata tonu ki ia kaimātau; mō te kōrero me ngā podcast, he nui te 96 ki te 128 kbps, ā, ka whakawātea anō te pūranga. Ko te whakawaehere i runga ake i te mokatere tāuru pūtake he mokowā whakawātea — he pono te tiaki i te oro i puta mai i tētahi whakawhitinga ngaro, ā, kāore e whakaora i tētahi mea i te whakawātea tuatahi.
Ka huri te tahuri i te mokatere tauira o ahau MP2?
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Kāore, engari rawa ina tono koe. Ka pupuri tētahi tahuri i te mokatere pūtake — 48 kHz e noho ana ki te 48 kHz, 44.1 kHz e noho ana ki te 44.1 kHz — nā te mea he iti te utu o te hua ki te kore e hiahiatia. Ko ngā whakarerekētanga tūturu: e hiahiatia ana e ngā CD orooro te 44.1 kHz, kāore ētahi kaipāpāho pūrere tawhito e whakaae ana ki ētahi atu mea, ā, ko ngā pūwhitinga reo e hiahiatia ana he 16 kHz. Ka whakaritea te mokatere i roto i ēnei take, ā, ka waiho i te mea kē.
Ka taea e au te whakahōu te whakaroa i te wāhi i te whakarerekētanga o MP2?
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Tata tonu ki te kore, ā, e mōhio ana te take: he tohu te whakaroatanga, i te wā e hanga ana ngā paerewa i roto mō tētahi hanga tauwhāiti. Ka whakaputaina e te whakahōutanga he faila ko te ingoa e whakapuakina ana he mea kāore i te tuku i ōna ihirangi, ā, ko te mea e whakatuwheratia ai, ka whakakāhore rānei i te faila, ka pāpāho rānei. Ko te whakawāteatanga whāiti kotahi ko ngā hanga e rua e tino ōrite ana i raro i ngā ingoa rerekē — ā, ahakoa he haumaru ake te whakaroanga tika i te whakahōutanga.
Ka taea e au te tahuri i tētahi pūrākau katoa o ngā pūranga MP2 i roto i tētahi neke?
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Me tētahi kāwanatanga, ā, — ka whakawātea rātau i te katoa, ā, ka whakawāteatia hei mahi kotahi, kaua e whakahaeretia tētahi i tētahi wā, me ngā whakaritenga ōrite e hoatu ana i te rōpū, ā, ka hoki ngā hua tahi. Ko ngā tahuritanga wātea e whakahaere ana i tētahi pūranga kotahi i tētahi wā (e rua ngā utauta whakakotahi); Ko te kaupapa utu te mea e whakawātea ai i te tukanga rōpū me te tepe nui ake i ia pūranga, e whakarerekē ana i tētahi pūranga katoa.
