u-LAW - définition. Qu'est-ce que u-LAW
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Qu'est-ce (qui) est u-LAW - définition

AUDIO COMPANDING ALGORITHM
Mu-law; Mu law; M-law; U-law; ULaw; Μ-law; U-Law; ULAW; M-law algorithm; Mulaw; Ulaw; Mu-law algorithm; Μ-Law; M-Law; PCMU; G.711Mu; G.711μ
  • Inverse μ-law function
  • μ-law function
  • μ-law decoding as generated with the Sun Microsystems C-language routine g711.c commonly available on the Internet.
  • Companding of μ-law and A-law algorithms

Μ-law algorithm         
The μ-law algorithm (sometimes written mu-law, often approximated as u-law) is a companding algorithm, primarily used in 8-bit PCM digital telecommunication systems in North America and Japan. It is one of two versions of the G.
mu-law         
The North America standard for {nonuniform quantising logarithmic compression}. [Equation?] (1995-02-21)
Ú         
LETTER OF THE LATIN ALPHABET
U acute; Uacute; U-acute; Ṹ; U+00DA; U with acute
Ú, ú (u-acute) is a Latin letter used in the Czech, Faroese, Hungarian, Icelandic, and Slovak writing systems. This letter also appears in Dutch, Frisian, Irish, Occitan, Pinyin, Portuguese, Spanish, Italian, Galician, and Vietnamese as a variant of the letter "U".

Wikipédia

Μ-law algorithm

The μ-law algorithm (sometimes written mu-law, often approximated as u-law) is a companding algorithm, primarily used in 8-bit PCM digital telecommunication systems in North America and Japan. It is one of two versions of the G.711 standard from ITU-T, the other version being the similar A-law. A-law is used in regions where digital telecommunication signals are carried on E-1 circuits, e.g. Europe.

Companding algorithms reduce the dynamic range of an audio signal. In analog systems, this can increase the signal-to-noise ratio (SNR) achieved during transmission; in the digital domain, it can reduce the quantization error (hence increasing the signal-to-quantization-noise ratio). These SNR increases can be traded instead for reduced bandwidth for equivalent SNR.