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HE-AAC 버전 각주 둘러보기 메뉴eheh문서를 완성해

모션 JPEG모션 JPEG 2000MPEG-1MPEG-2파트 2MPEG-4파트 2/ASP파트 10/AVCHEVCH.120H.261H.262H.263H.264HEVCAMVAVSBinkDiracDVIndeo마이크로소프트 비디오1Pixlet리얼비디오RTVideoSheerVideo스매커 비디오TheoraVC-1VP6VP7VP8VP9WMVXvidMPEG-1 레이어 III (MP3)MPEG-1 레이어 IIMPEG-1 레이어 IAACHE-AACG.711G.718G.719G.722G.722.1G.722.2G.723G.723.1G.726G.728G.729G.729.1G.729aAC3AMR애플 무손실ATRACFLACiLBCMonkey's Audioμ-lawMusepackOptimFROG리얼오디오RTAudioSHNSirenSpeexVorbisWavPackWMATAKTTAJPEG XRJPEGJPEG 2000무손실 JPEGJBIGJBIG2PNGWBMPAPNGBMPEXRGIFICERILBMMNGPCXPGFTGATIFFDNGSVGWebP3GPASFAVIBinkBXFDivX 미디어 포맷DPXEVOFLV마트료시카MPEG-PSMPEG-TSMP4MXFOggOgg 미디어퀵타임리얼미디어스매커RIFFVOBWebMAIFFAUWAVITU 표준NTSCNTSC-JPAL-MPALPAL-N/NCPALplusSÉCAM음성 다중NICAM-728A2 스테레오EIAJSAP사운드 인 싱크자막문자 다중 방송CGMS-AGCRPDCVBIVEILVITVITCWSSXDSEPG1940년 이전기계식 텔레비전180 라인405 라인441 라인819 라인MAC뮤즈SDTV480i576iHDTV1080iLDTV1seg240p288pEDTV480p576pHDTV720p1080pUHDTV2160p4320pATSCDVBISDBDMB-T/HDVB 3D-TVATSC 2.0 (A/72)DMBDMB-T/HDVBSBTVD1segAC-35.1DTSMPEG-1 오디오 레이어 IIMPEG 다중 채널PCMLPCMAACHE-AAC자막문자 다중 방송CPCM방송 플래그AFDEPG14:9 타협브로드캐스트 세이프동화상 포맷MPEG 트랜스포트역표준 변환표준 변환영상 처리주문형 비디오HDTV 블러


오디오 코덱손실 압축 알고리즘


고급 오디오 부호화비트레이트스펙트럼 대역 복제주파수 영역파라메트릭 스테레오












HE-AAC




위키백과, 우리 모두의 백과사전.






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고효율 고급 오디오 부호화(High-Efficiency Advanced Audio Coding, HE-AAC)는 디지털 오디오에서 쓰이는 손실 데이터 압축 방식이다. 복잡성이 낮은 고급 오디오 부호화(AAC LC)이며, 스트리밍 오디오와 같은 낮은 비트레이트 애플리케이션에 최적화되었다. 고효율 고급 오디오 부호화 버전1(HE-AAC v1)은 스펙트럼 대역 복제(Spectral band replication, SBR)를 사용하여 주파수 영역(frequency domain)에서 압축 효율을 향상시킨다. 고효율 고급 오디오 부호화 버전2(HE-AAC v2)는 스펙트럼 대역 복제와 파라메트릭 스테레오(PS)가 한 쌍을 이루어 스테레오 신호의 압축 효율을 향상시킨다.[1]이 기법들을 사용하여 상당한 압축률의 향상을 이끌어 냈으나,박수와 같은 압축하기 어렵다고 알려진 음원에서는 음질의 열화가 발생한다고 알려져 있다.[2]



버전














버전
명칭
코덱 기능
표준
HE-AAC v1
aacPlus v1, eAAC, AAC+, CT-aacPlus
AAC LC + SBR
ISO/IEC 14496-3:2001/Amd 1:2003
HE-AAC v2
aacPlus v2, eAAC+, AAC++, Enhanced AAC+
AAC LC + SBR + PS
ISO/IEC 14496-3:2005/Amd 2:2006


각주




  1. ↑ http://minimonk.net/m/post/5311


  2. ↑ https://tech.ebu.ch/docs/tech/tech3324.pdf








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