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 signum function (
sign in MATLAB® software).
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.
|Port||Supported Data Types|
 Sklar, Bernard. Digital Communications: Fundamentals and Applications. Englewood Cliffs, N.J., Prentice-Hall, 1988.