Manual Pages for UNIX Operating System command usage for man mlib_SignalLPCPerceptWeight_F32

mediaLib Library Functions
                           mlib_SignalLPCPerceptWeight_F32(3MLIB)



NAME
     mlib_SignalLPCPerceptWeight_F32 - perform perceptual weight-
     ing on input signal

SYNOPSIS
     cc [ flag... ] file... -lmlib [ library... ]
     #include 

     mlib_status mlib_SignalLPCPerceptWeight_F32(mlib_f32 *sigwgt,
          const mlib_f32 *signal, const mlib_f32 *lpc, mlib_f32 r1,
          mlib_f32 r2, void *state);


DESCRIPTION
     The mlib_SignalLPCPerceptWeight_F32() function performs per-
     ceptual weighting on input signal.


     The perceptual weighting filter is defined as following.

                    A(z*r1)
            W(z) = ---------
                    A(z*r2)



     where A(z) is the inverse filter

                        M          -i
            A(z) = 1 - SUM a(i) * z
                       i=1



     See G.723.1, G.728, G.729, G.729A, GSM EFR standards.

PARAMETERS
     The function takes the following arguments:

     sigwgt    The weighted signal vector.


     signal    The input signal vector.


     lpc       The linear prediction coefficients.


     r1        The perceptual weighting filter coefficient, it is
               treated as 1 if 0 is supplied.




SunOS 5.11           Last change: 2 Mar 2007                    1






mediaLib Library Functions
                           mlib_SignalLPCPerceptWeight_F32(3MLIB)



     r2        The perceptual weighting filter coefficient, it is
               treated as 1 if 0 is supplied.


     state     Pointer to the internal state structure.


RETURN VALUES
     The function returns MLIB_SUCCESS if  successful.  Otherwise
     it returns MLIB_FAILURE.

ATTRIBUTES
     See attributes(5) for descriptions of the  following  attri-
     butes:



     ____________________________________________________________
    |       ATTRIBUTE TYPE        |       ATTRIBUTE VALUE       |
    |_____________________________|_____________________________|
    | Interface Stability         | Committed                   |
    |_____________________________|_____________________________|
    | MT-Level                    | MT-Safe                     |
    |_____________________________|_____________________________|


SEE ALSO
     mlib_SignalLPCPerceptWeightInit_F32(3MLIB),
     mlib_SignalLPCPerceptWeightFree_F32(3MLIB), attributes(5)

























SunOS 5.11           Last change: 2 Mar 2007                    2






mediaLib Library Functions
                           mlib_SignalLPCPerceptWeight_F32(3MLIB)






















































SunOS 5.11           Last change: 2 Mar 2007                    3