Implement A-law compressor for source coding
The A-Law Compressor block implements an A-law compressor for the input signal. The formula for the A-law compressor is
where A is the A-law parameter of the compressor,
V is the peak signal magnitude for x, log is
the natural logarithm, and sgn is the
The most commonly used A value is 87.6.
The input can have any shape or frame status. This block processes each vector element independently.
The A-law parameter of the compressor.
The peak value of the input signal. This is also the peak value of the output signal.
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 Sklar, Bernard. Digital Communications: Fundamentals and Applications. Englewood Cliffs, N.J., Prentice-Hall, 1988.