mediaLib Library Functions  mlibSignalMelCepstralInitS16(3MLIB)



NAME
     mlibSignalMelCepstralInitS16,
     mlibSignalMelCepstralInitF32 - initialization for cepstral
     analysis in mel frequency scale

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

     mlibstatus mlibSignalMelCepstralInitS16(void *state, mlibs32 nlinear,
          mlibs32 nmel, mlibf32 melbgn, mlibf32 melend, mlibf32 meldiv,
          mlibs32 order);


     mlibstatus mlibSignalMelCepstralInitF32(void *state, mlibs32 nlinear,
          mlibs32 nmel, mlibf32 melbgn, mlibf32 melend, mlibf32 meldiv,
          mlibs32 order);


DESCRIPTION
     Each of  these  functions  initializes  the  internal  state
     structure for cepstral analysis in mel frequency scale.


     The init function performs internal state structure  alloca-
     tion  and global initialization. Per function call initiali-
     zation is done in each function, so the same internal  state
     structure can be reused for multiplefunction calls.

PARAMETERS
     Each of the functions takes the following arguments:

     state      Pointer to the internal state structure.


     nlinear    The number of band pass filters  in  linear  fre-
                quency scale.


     nmel       The number of band pass filters in mel  frequency
                scale.


     melbgn     The begin  radian  frequency  of  the  mel  scale
                filter  bank  defined  in linear frequency scale,
                where 0 < melbgn < melend < PI, melbgn is ignored
                if nlinear = 0.


     melend     The end radian frequency of the mel scale  filter
                bank defined in linear frequency scale, where 0 <
                melbgn < melend < PI.



SunOS 5.11           Last change: 2 Mar 2007                    1






mediaLib Library Functions  mlibSignalMelCepstralInitS16(3MLIB)



     meldiv     The  dividing  factor  in  linear  to  mel  scale
                conversion,  linear scale is measured in radians,
                with PI corresponding to half the sampling rate.


     order      The order of the input signal vector and the cep-
                stral coefficients, where length = 2**order.


RETURN VALUES
     Each of the functions returns  MLIBSUCES  if  successful.
     Otherwise it returns MLIBFAILURE.

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



     
           ATRIBUTE TYPE               ATRIBUTE VALUE       
    
     Interface Stability          Committed                   
    
     MT-Level                     MT-Safe                     
    


SEE ALSO
     mlibSignalMelCepstralS16(3MLIB),
     mlibSignalMelCepstralF32(3MLIB),
     mlibSignalMelCepstralS16Adp(3MLIB),
     mlibSignalMelCepstralFreeS16(3MLIB),
     mlibSignalMelCepstralFreeF32(3MLIB), attributes(5)





















SunOS 5.11           Last change: 2 Mar 2007                    2