AAC (Advanced Audio Coding)

AAC e um formato de audio com perda que oferece melhor qualidade de som que MP3 na mesma taxa de bits. E o formato de audio padrao para YouTube, Apple Music, Spotify e muitos servicos de streaming.

Tipo MIME

audio/aac

Tipo

Binário

Compressão

Com perdas

Vantagens

+ Better audio quality than MP3 at equivalent bitrates
+ Native support in Apple, Android, YouTube, and streaming platforms
+ Supports multichannel surround sound (up to 48 channels)
+ HE-AAC profiles enable high-quality low-bitrate streaming

Desvantagens

− Lossy compression still discards audio data permanently
− Licensing fees apply for AAC encoder distribution
− Some open-source tools have limited AAC encoding support

Quando usar .AAC

Use AAC para streaming de musica, audio de video (MP4/M4A) e qualquer cenario onde melhor qualidade que MP3 e necessaria com compatibilidade alargada.

Detalhes técnicos

O AAC utiliza MDCT com tamanhos de bloco de 1024 ou 128 amostras, predicao temporal, espelhamento de frequencia de banda e parametric stereo. Os perfis incluem LC (Low Complexity), HE-AAC (largura de banda alta) e xHE-AAC (fala e musica).

Histórico

O AAC foi desenvolvido por um consorcio que incluia Fraunhofer, Dolby, Sony e Nokia como parte do MPEG-2 (1997) e MPEG-4 (1999). A Apple adotou o AAC para o iTunes Store em 2003, impulsionando a adocao generalizada.

Converter de .AAC

.aac → .ac3 .aac → .aiff .aac → .alac .aac → .amr .aac → .ape .aac → .avi .aac → .flac .aac → .flv .aac → .m4a .aac → .mid .aac → .midi .aac → .mkv .aac → .mov .aac → .mp3 .aac → .mp4 .aac → .ogg .aac → .opus .aac → .wav .aac → .webm .aac → .wma

Converter para .AAC

.ac3 → .aac .aiff → .aac .alac → .aac .amr → .aac .ape → .aac .avi → .aac .flac → .aac .flv → .aac .m4a → .aac .mid → .aac .midi → .aac .mkv → .aac .mov → .aac .mp3 → .aac .mp4 → .aac .ogg → .aac .opus → .aac .wav → .aac .webm → .aac .wma → .aac

Formatos relacionados

.ac3 .aiff .alac .amr .ape .flac .m4a .mid .midi .mp3 .ogg .opus .wav .wma

Termos relacionados

AAC Audio Codec M4A

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