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MP3 (MPEG Layer III Audio Encoding)
https://www.loc.gov/preservation/digital/formats/fdd/fdd000012.shtml
MP3 (common name). MPEG Layer III audio encoding is defined in two ISO/IEC specification families (MPEG-1: 11172-3 and MPEG-2: 13818-3). MP3 compression employs perceptual coding, an approach based on psychoacoustic models that permit the codec to discard or reduce the precision of audio components that are less audible to human hearing.
Audio | MPEG
https://mpeg.chiariglione.org/standards/mpeg-2/audio
MPEG-2 AudioMPEG doc#: N7703Date: October 2005Authors: B. Grill, S. Quackenbush MPEG-1 Layer I or II Audio is a generic subband coder operating at bit rates in the range of 32 to 448 kb/s and supporting sampling frequencies of 32, 44.1 and 48 kHz. Typical bit rates for Layer II are in the range of 128-256 kbit/s, and 384 kb/s for professional applications.MPEG-1 Layers I and
MPEG-1 and MPEG-2 Layer II Audio Encoding
https://www.loc.gov/preservation/digital/formats/fdd/fdd000338.shtml
MPEG-1 and MPEG-2 Layer II Audio Encoding. Description. Lossy audio compression that derives from the MUSICAM audio codec. This format may be referred to as MP2 and employs perceptual compression. This means MP2's compression takes out information that is imperceptible in the human auditory range. MP2 is the dominant audio …
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