mu = lin2mu(y)
mu = lin2mu(y) converts linear audio signal amplitudes in the range -1 <= y <= 1 to µ-law encoded data in the range 0 <= mu <= 255.The µ-law standard is widely used in communications, particularly in speech compression and digitization.
auwrite,mu2lin
(c) Copyright 1994 by The MathWorks, Inc.