PCM

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Related to A-law: Law society, u-Law

PCM

Abbreviation for protein k-calorie malnutrition.
References in periodicals archive ?
In this paper, we provide an iterative and a closed-form solutions for support region determination of A-law semilogarithmic quantizer for Laplacian source and a set of bit-rates 6 bits/sample-10 bits/sample.
In this paper, we have analyzed A-law characteristic for swiched non-uniform scalar quantization of Gaussian source.
Audio can be transmitted or received using G.726 (40 kbps, 32 kbps, 24 kbps, or 16 kbps) codec format for direct insertion into T1 E1 timeslots, along with the usual u-law or A-law formats".
Now POLQA supports 12 bit degraded file (NB, WB, SWB) and 8-bit a-Law and mu-Law voice files and it also supports Raw PCM as well as WAV files with auto-detect sampling for WAV files.
* Recording performed using A-Law, and [micro]-Law codec
The G.711 codec also supports A-law, Mu-law, and passes all ITU verification tests.
It supports A-Law, [micro]-Law, 16-bit PCM (Intel), 16-bit PCM (Motorola), MS Wave, G.726 (40 Kbps, 32 Kbps, 24 Kbps, and 16 Kbps), and G.722 (64 Kbps) file formats.
Compared to G.711, it has the following superior characteristics: G.722 codec normally operates at 64 kbps (similar to G.711, A-law and u-law), although it can also operate at 56 kbps, or 48 kbps, and it is license free, and has better audio frequency response due to 16 kHz sampling and 14 bit resolution, and therefore G.722 codec provides better speech quality than G.711 codec.