Kōnae AAC: He aha te mea Tautuhinga Best Format? AAC mo High AAC Quality?

He AAC pai atu i MP3?

I whakawhanakehia AAC rite te whakakapi o MP3. Rua MP3 me AAC he hōputu kōnae kōpeketanga rōhi, a to ratou katoa ratou hua me demerits. Hoki tauira, AAC he kounga tangi teitei whakaritea ki MP3, a he iti ano hoki te reira. MP3, i te tahi atu te ringa, he nui ake hototahi ki atu kaitākaro pāpāho me ngā pūrere atu AAC. Ki te tangohia e koe nga mea katoa ki te whakaaro, he uaua ki te whakatau i te hōputu, pai atu i te tahi atu. Heoi, ki te mea e rapu ana koutou mo te tangi āhuatanga kounga me te rahi kōnae, ka AAC ko te kōnae pai hoki koutou. Ko te pai MP3 ka whakaaro take hototahi.

• Part 1. He aha te AAC File? Na kukuwhatanga o AAC Format?
• Part 2. AAC-LC vs HE-AAC: He aha te mea AAC-LC / HE-AAC me Differences?
• Part 3. Tautuhinga Best hoki Hōputu AAC
• Wāhanga 4. AAC kōtēke Taunakitia
• Part 5. Best AAC Converter

Part 1. He aha te AAC File? Na kukuwhatanga o AAC Format?

# 1. Hōputu AAC:

AAC i te mea he puka poto mo Audio Arā Coding pā ana ki te, pūnaha kōpeketanga me te whakawaehere rōhi paerewa mō te ororongo mamati. I whakawhanakehia te reira ki te hei i te whai o te hōputu MP3. A, no te whakawaeheretia i bitrates rite, tutuki AAC tangi pai kounga atu MP3. I hanga AAC ki te takoha o ngā kamupene, tae atu Fraunhofer IIS, Dolby Laboratories, AT & T BELL Laboratories, Nokia me Sony Corporation. I roto i te 1997, ka whakaaturia he paerewa ao e te Moving Tohunga Group Pikitia. Kei te tohua te reira hei wāhanga 7 o MPEG-2 paerewa, me te-iti 4 o te wahi 3 i roto i te paerewa MPEG-4. Ko te whanaketanga me te kukuwhatanga o te AAC ngā āhuatanga rerekē pērā i AAC 2.0 i te mea te putanga 2 o te AAC hāngai nei i runga i SBR, me taputapu tīwharawhara waehere tawhā i roto i te MPEG-4 paerewa Audio.

# 2. AAC SBR:

AAC SBR rite whakamahia i roto i te whanaketanga o AAC hōputu ororongo e pā ana ki spectral Band Tukuruatanga i ki tonu i. Ko te hangarau e whakamahia ana ki te whakarei ake i ngā kotēkē oro, ngā i runga i bitrates iti.

# 3. AAC tīwharawhara:

AAC tīwharawhara i roto i te whanaketanga o te AAC ko te tikanga o te reproduction tangi e ngā he tokonga o maha-rua tirohanga e faaroohia. Kei te tutuki te reira i roto i te whakamahi o rua ranei ake motuhake hongere ororongo. AAC 5.1 Ko te paerewa mō pāhotanga oro i roto i te AAC ororongo. Heoi, ADTS AAC (Stream Transport Raraunga Audio) ko te hōputu whakamahi e te MPEG-TS ki rere AAC ororongo.

Part 2. AAC-LC vs HE-AAC

# 1. Ia-AAC:

E pā ana ia-AAC ki High-te kaha Audio Arā Coding. Ko te hōputu waehere oro mō te kōpeketanga raraunga rōhi o ororongo mamati. E parauhia te reira rite MPEG-4 kōtaha Audio i IEC / ISO 14496-3. Ko te waehere ko te toronga o te AAC LC me te papaitia kia bitrates iti.

# 2. AAC-LC:

pā AAC-LC ki te AAC iti Uauatanga. Kei te nuinga papaitia te reira no te bitrates tiketike. Kei roto LC o te hōputu turanga i te mea rite te AT me a T Perceptual Audio Coding (PAC) hōputu me te Noise Tahuti auaha.

# 3. Differnces I waenganui HE-AAC me AAC-LC:

He pai hoki bitrates iti pērā i 80kbps me i raro i papaitia AAC LC te hoki bitrates tiketike pērā i 90kbps me runga ake 1. HE-AAC. I roto i taua take, he pai ia-AAC, ki te e whakamahere koe i runga i te tākaro i ngā kōnae i runga i te rorohiko mā te whakamahi i te pūmanawa hototahi ka whakawaehere i bitrates iti ranei. I te tahi atu te ringa, he e tika ana mō te tautoko pūmārō me te whakawaehere i bitrates teitei pērā i 90kbps me runga ake LC-AAC.
2. LC-AAC e manawapa ana koutou tiaki pākahiko ranei i roto i to koutou motokā ranei koutou pūrere pūkoro ia te HE-AAC manga koutou pākahiko rawa ngāwari.
He rite ki te AAC-LC i 96 kb / s 3. Ko te ia-AAC v1 kounga tangi i 64 kb / s.

Part 3. Tautuhinga Best hoki Hōputu AAC

Bit Auau: 320kbps teitei hoki 2 takere ranei (he pai tonu te Auaumoka teitei, Heoi, ko te hoki 256 kbps manakohia).

Auau Tauira: 44.1Khz

Ngā aho: 2 (tīwharawhara)

Wāhanga 4. AAC kōtēke Taunakitia

# 1. AAC-LC:

E pā ana AAC ki te AAC whīwhiwhi iti. E tautoko ana i hoki reo / tīwharawhara / 5.0 / 5.1 ihirangi ki reiti tīpako paerewa i 8 ki te 48 kHz.

OS tautokona: 4.1+ Android, Windows 8 waea ki pūtukatuka MSM8x27, MSM8x30, MSM8960 ko MSM8974
tautokona Ipu: 3GP, 3G2, MP4, M4A, MPR, AAC

# 2. HE-AACv1 (AAC +):

tu ana tēnei kōtēke mo ia Ebera AAC putanga 1 kōtaha. Ko te kōtēke faaohipahia te spectral Band Tukuruatanga (SBR) ki te whakarei ake i te tōtika kōpeketanga i roto i te rohe auau. E tautoko ana i te reo / tīwharawhara / 5.0 / 5.1 ihirangi ki reiti tīpako paerewa i 8 ki te 48 kHz.

OS tautokona: 4.1+ Android, Windows 8 waea ki pūtukatuka MSM8x27, MSM8x30, MSM8960 ko MSM8974
tautokona Ipu: 3GP, 3G2, MP4, M4A, AAC

# 3. HE-AACv2 (+ AAC whakarei):

Ko putanga AAC Ebera tenei 2 kōtaha me hono reira SBR ki tawhā tīwharawhara (PS) ki te whakatairanga i kōpeketanga tōtika o tohu tīwharawhara. Ko te putanga ko te whakapai ake, me te putanga mō te AAC tāpiri. tautoko te reira i tīwharawhara / 5.0 / 5.1 ihirangi ki reiti tīpako paerewa i 8 ki te 48 kHz.

OS tautokona: 4.1+ Android, Windows 8 waea ki pūtukatuka MSM8x27, MSM8x30, MSM8960 ko MSM8974
tautokona Ipu: 3GP, 3G2, MP4, M4A, AAC

# 4. AAC-koroheke (whakarei AAC roa iti):

mohiotia hoki rite te MPEG-4 iti whakaroa Audio Coder. fakatahai te reira i te painga o te waehere audio perceptual ki te roa iti ki te whakapai ake rua-ara kōrero. tuku te reira i te tautoko mō te reo me te tīwharawhara ihirangi ki reiti tīpako paerewa i 16 ki te 48 kHz.

OS tautokona: Android 4.1+
tautokona Ipu: 3GPP (.3gp), MPEG-4 (.mp4, .m4a), MPEG-TS

# 5. AAC-HEv2:

Tautoko mō te reo tīwharawhara ranei ihirangi ki reiti tīpako paerewa i 16 ki te 48 kHz.

OS tautokona: Android 4.1+
tautokona Ipu: 3GPP (.3gp), MPEG-4 (.mp4, .m4a)

Part 5. Best AAC Converter

UniConverter ko te otinga nui ki ngā mahi ataata me te faafariuraa oro katoa. tautoko te reira i te faafariuraa i waenganui i neke atu i te 150 hōputu kōnae ki te hunga hou e tāpiri ki whakamohoatanga hou. Ki te hiahia koe ki te tahuri tetahi kōnae, ka taea e koe te whai i toru kaupae ohie, me te whiwhi i te hōputu e he hoa ki tou kaitākaro pāpāho. Te AAC Converter whakaora koutou raraunga i waho pokanoa ki te kounga o to koutou kōnae, a ka taea e koe te tahuri tika ki te hōputu pūrere mā te kōwhiri i te momo pūrere rite te hōputu putanga i AAC. Ka taea hoki te tāuta e koe tenei Converter AAC i runga i tou PC Windows Mac rorohiko ranei mā te tīpako i te putanga tautokona e te pūnaha mahi o tō rorohiko. Ko te tere faafariuraa hoki tere, a ka taea e koe te tahuri i te whānuitanga o ngā kōnae i te haere.