AAC File: Mene ne AAC Format? Mafi Saituna for High AAC Quality?

Shin AAC mafi alhẽri daga MP3?

AAC da aka ɓullo da matsayin magaji na MP3. Dukansu MP3 da kuma AAC ne lossy matsawa fayil Formats, kuma suka duk suna da isa yabo da demerits. Alal misali, AAC yana da babban sauti ingancin idan aka kwatanta da MP3, kuma shi ne ma kananan. MP3, a daya hannun, shi ne mafi jituwa tare da mafi kafofin watsa labarai da 'yan wasan da kuma na'urorin fiye da AAC. Idan ka dauki dukkan abubuwan da la'akari, yana da wuya a tantance abin da format ne mafi alhẽri daga da wasu. Duk da haka, idan kana neman ingancin sauti dabiu da file size, sa'an nan AAC ne mafi kyau fayil a gare ku. MP3 ne mafi alhẽri a lokacin da la'akari da karfinsu al'amurran da suka shafi.

• Part 1. Mene ne AAC File? Kuma juyin halitta na AAC Format?
• Part 2. AAC-LC vs SHI-AAC: Mene ne AAC-LC / SHI-AAC, kuma Differences?
• Part 3. Mafi wuri domin AAC Format
• Part 4. AAC Codec Nagari
• Part 5. Mafi AAC Converter

Part 1. Mene ne AAC File? Kuma juyin halitta na AAC Format?

# 1. AAC Format:

AAC wanda shi ne mai gajeren tsari domin Advanced Audio coding tana nufin wani daidaita, lossy matsawa da kuma tsarinsa tsarin for dijital audio. Yana da aka ɓullo da ya zama magaji na MP3 format. Lokacin shigar wanda ke aiki a irin wannan bitrates, AAC cinma mafi kyawun ingancin sauti fiye da MP3. AAC aka halitta da taimako na kamfanonin ciki har da Fraunhofer IIS, Dolby dakunan gwaje-gwaje, AT & T kararrawa dakunan gwaje-gwaje, Nokia da Sony Corporation. A 1997, da aka ayyana na duniya misali da Motsi Hoto Masana Group. An kayyade matsayin wani bangare na 7 na MPEG-2 misali, da kuma subpart 4 na kashi 3 a cikin MPEG-4 misali. A ci gaba da kuma ci gaba na AAC hada daban-daban fasali kamar AAC 2.0 wanda shine version 2 na AAC wanda dogara ne a kan SBR, kuma parametric sitiriyo coding kayan aikin a cikin MPEG-4 Audio misali.

# 2. AAC SBR:

AAC SBR kamar yadda amfani a ci gaba da AAC audio format yana nufin na Band kwafi a cike. Yana da wani fasahar amfani don bunkasa audio codecs, musamman a kan low bitrates.

# 3. AAC sitiriyo:

AAC sitiriyo a gaban AAC ne da hanyar da sauti haifuwa cewa Forms wani mafarki da Multi-directional audible hangen zaman gaba. An samu ta hanyar yin amfani da biyu ko fiye m audio tashoshi. AAC 5.1 ne misali ga watsa shirye-shiryen sauti a AAC audio. A ƙarshe, AAC ADTS (Audio Data sufuri Stream) ne mai girma amfani da MPEG-TS don jerowa AAC audio.

Part 2. AAC-LC vs SHI-AAC

# 1. SHI-AAC:

SHI-AAC tana nufin High-dace Advanced Audio coding. Yana da wani audio coding format for lossy data matsawa na dijital audio. Yana aka bayyana a matsayin MPEG-4 Audio profile a IEC / ISO 14496-3. A coding sigar tsawo na AAC LC da aka gyara domin low bitrates.

# 2. AAC-LC:

AAC-LC nufin da Low Rikitaccen AAC. Yana aka mafi yawa gyara domin high bitrates. LC qunshi na wani tushe format wanda shi ne kamar AT da kuma T ta Perceptual Audio coding (PAC) format da kuma na boko surutu siffata.

# 3. Differnces Tsakanin SHI-AAC, kuma AAC-LC:

1. SHI-AAC ne mai kyau ga low bitrates kamar 80kbps da kasa yayin da AAC LC aka gyara domin high bitrates kamar 90kbps da kuma sama. A wannan yanayin, ya-AAC ne mafi alhẽri idan kana shirin a kan wasa fayiloli a kan kwamfuta ta yin amfani da mai jituwa software ko lokacin shigar a low bitrates. A daya hannun, LC-AAC ne dace da hardware goyon baya da kuma tsarinsa a high bitrates kamar 90kbps da kuma sama.
2. LC-AAC ceci baturi cajin ko dai a cikin mota ko ta hannu da na'urar yayin da SHI-AAC drains baturi sosai sauƙi.
3. A SHI-AAC ayata1 ingancin sauti a 64 kb / s ne kama da AAC-LC a 96 kb / s.

Part 3. Mafi wuri domin AAC Format

Bit Rate: 320kbps ko sama da 2 tashoshi (a mafi girma bitrate ne ko da yaushe mafi alhẽri, duk da haka, 256 kbps ne ma m).

Samfurin Rate: 44.1Khz

Channels: 2 (sitiriyo)

Part 4. AAC Codec Nagari

# 1. AAC-LC:

AAC nufin da low rikitaccen AAC. Yana goyon bayan ga na daya / sitiriyo / 5.0 / 5.1 ciki tare da misali Samfur rates daga 8 zuwa 48 kHz.

Goyan bayan OS: Android 4.1+, Windows 8 wayar da processor MSM8x27, MSM8x30, MSM8960 da MSM8974
goyon Container: 3GP, 3G2, MP4, M4A, MPR, AAC

# 2. SHI-AACv1 (AAC +):

Wannan Codec tsaye ga HE- AAC version 1 profile. A Codec utilizes da na Band kwafi (SBR) don bunkasa matsawa yadda ya dace a cikin mita yankin. Yana goyon bayan da na daya / sitiriyo / 5.0 / 5.1 ciki tare da misali Samfur rates daga 8 zuwa 48 kHz.

Goyan bayan OS: Android 4.1+, Windows 8 wayar da processor MSM8x27, MSM8x30, MSM8960 da MSM8974
goyon Container: 3GP, 3G2, MP4, M4A, AAC

# 3. SHI-AACv2 (inganta AAC +):

Wannan shi ne HE- AAC version 2 profile kuma shi shiga SBR da Parametric sitiriyo (PS) ya inganta matsawa yadda ya dace da sitiriyo sakonni. A version wani ci gaba ne da kuma mai daidaita version for AAC da. Yana goyon bayan sitiriyo / 5.0 / 5.1 ciki tare da misali Samfur rates daga 8 zuwa 48 kHz.

Goyan bayan OS: Android 4.1+, Windows 8 wayar da processor MSM8x27, MSM8x30, MSM8960 da MSM8974
goyon Container: 3GP, 3G2, MP4, M4A, AAC

# 4. AAC-ELD (inganta low jinkirta AAC):

Kuma aka sani da MPEG-4 Low Dakata Audio coder. Yana hadawa da abũbuwan amfãni daga perceptual audio coding tare da wani bata lokaci low inganta biyu-hanyar sadarwa. Yana offers goyon baya ga na daya da kuma sitiriyo ciki tare da misali Samfur rates daga 16 zuwa 48 kHz.

Goyan bayan OS: Android 4.1+
goyon Container: 3GPP (.3gp), MPEG-4 (.mp4, .m4a), MPEG-TS

# 5. AAC-HEv2:

Support for na daya ko sitiriyo ciki tare da misali Samfur rates daga 16 zuwa 48 kHz.

Goyan bayan OS: Android 4.1+
goyon Container: 3GPP (.3gp), MPEG-4 (.mp4, .m4a)

Part 5. Mafi AAC Converter

UniConverter ne mafi girma warware duk video da kuma audio hira ayyuka. Yana goyon bayan hira tsakanin fiye da 150 fayil Formats tare da sababbi ana kara da sabon kyautayuwa. Idan kana so ka maida wani fayil, za ka iya bi uku sauki matakai da kuma samun wata format wanda shi ne m to your kafofin watsa labarai player. A AAC Converter kubutar da your data ba tare da tsoma baki da ingancin fayil nka, kuma za ka iya maida kai tsaye zuwa cikin na'urar format da zabar da na'urar irin matsayin fitarwa format daga AAC. Za ka iya shigar da wannan AAC Converter a kan Windows PC ko Mac kwamfuta ta zabi da version goyan bayan kwamfutarka ta tsarin aiki. A hira gudun ne ma sauri, kuma za ka iya maida da dama fayiloli a tafi.