MP3 (MPEG-1 Audio Layer III)
MP3 e o formato de audio digital mais reconhecido do mundo, utilizando compressao com perda para reduzir o tamanho dos ficheiros de audio em 90% mantendo qualidade aceitavel. E universalmente suportado por todos os dispositivos e plataformas.
Tipo MIME
audio/mpeg
Tipo
Binário
Compressão
Com perdas
Vantagens
- + Universal playback support on every device and platform
- + Excellent compression for spoken word and music
- + Variable bitrate (VBR) optimizes quality per frame
- + ID3 tags support rich metadata (title, artist, album art)
Desvantagens
- − Lossy compression permanently removes audio data
- − Quality degrades with each re-encoding
- − Surpassed by AAC, Opus, and Vorbis in compression efficiency
Quando usar .MP3
Use MP3 para musica e audio onde compatibilidade universal e importante. Para melhor qualidade no mesmo tamanho, considere AAC ou Opus.
Detalhes técnicos
O MP3 utiliza codificacao percetual com transformada de cosseno discreta modificada (MDCT) e mascaramento psicoacustico para remover sons impercetiveis. Suporta taxas de bits de 32 a 320 kbps (CBR/VBR), taxas de amostragem de 8 a 48 kHz e metadados ID3.
Histórico
O Fraunhofer Institute desenvolveu o MP3 nos anos 1980, e a norma foi publicada em 1993. O Winamp (1997) e o Napster (1999) impulsionaram a adocao massiva. As patentes do MP3 expiraram globalmente em 2017.
Converter de .MP3
Converter para .MP3
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