MP1 - meaning and definition. What is MP1
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What (who) is MP1 - definition

AUDIO FORMATS
MPEG-1 Audio Layer 1; MP1; .mp1

MP1         
MPEG-1 audio layer 1         
<audio, compression, algorithm> (MP1) A simple 32-subband audio compressor using a floating point representation for subband samples. Resolution and scale factor are stored for groups of 12 subsamples. MP1 is only used for Philips DCC Digital Compact cassette with data rates of 384 kbps. (2001-12-02)
PITRM1         
PROTEIN-CODING GENE IN THE SPECIES HOMO SAPIENS
Pitrilysin metallopeptidase 1; Metalloprotease 1; Metalloproteinase 1; Metallopeptidase proteinase 1; Metallopeptidase protease 1; MTP1; MTP-1; PITRM1 (gene)
Pitrilysin metallopeptidase 1 also known as presequence protease, mitochondrial (PreP) and metalloprotease 1 (MTP-1) is an enzyme that in humans is encoded by the PITRM1 gene. It is also sometimes called metalloprotease 1 (MP1).

Wikipedia

MPEG-1 Audio Layer I

MPEG-1 Audio Layer I, commonly abbreviated to MP1, is one of three audio formats included in the MPEG-1 standard. It is a deliberately simplified version of MPEG-1 Audio Layer II (MP2), created for applications where lower compression efficiency could be tolerated in return for a less complex algorithm that could be executed with simpler hardware requirements. While supported by most media players, the codec is considered largely obsolete, and replaced by MP2 or MP3.

For files only containing MP1 audio, the file extension .mp1 is used.

A limited version of MPEG-1 layer I was also used by the Digital Compact Cassette format, in the form of the PASC (Precision Adaptive Subband Coding) audio compression codec. The bit rate of PASC was fixed at 384 kilobits per second, and when encoding audio at a sample frequency of 44.1 kHz, PASC regards the padding slots as 'dummy' and sets them to zero, whereas the ISO/IEC 11172-3 standard uses them to store data.