sunos man page for mlib_signallpc2cepstral_f32

mlib_SignalLPC2Cepstral_F32(3MLIB)			    mediaLib Library Functions				mlib_SignalLPC2Cepstral_F32(3MLIB)

NAME
       mlib_SignalLPC2Cepstral_F32 - convert linear prediction coefficients to cepstral coefficients

SYNOPSIS
       cc [ flag... ] file... -lmlib [ library... ]
       #include <mlib.h>

       mlib_status mlib_SignalLPC2Cepstral_F32(mlib_f32 *cepst, const mlib_f32 *lpc, mlib_f32 gain, mlib_s32 length, mlib_s32 order);

DESCRIPTION
       The mlib_SignalLPC2Cepstral_F32() function converts linear prediction coefficients to cepstral coefficients.

       The cepstral coefficients are the coefficients of the Fourier transform representation of the log magnitude spectrum.

       The LPC cepstral coefficients can be derived recursively from the LPC coefficients as following.

       c(0) = log(G)

		     m-1  k
       c(m) = a(m) + SUM --- * c(k) * a(m-k), 1 <= m <= M
		     k=1  m

	      m-1  k
       c(m) = SUM --- * c(k) * a(m-k), m > M
	      k=1  m

       See Fundamentals of Speech Recognition by Lawrence Rabiner and Biing-Hwang Juang, Prentice Hall, 1993.

PARAMETERS
       The function takes the following arguments:

       cepst	       The cepstral coefficients.

       lpc	       The linear prediction coefficients.

       gain	       The gain of the LPC model.

       length	       The length of the cepstral coefficients.

       order	       The order of the linear prediction filter.

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

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

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Evolving			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO
       mlib_SignalLPC2Cepstral_S16(3MLIB), mlib_SignalLPC2Cepstral_S16_Adp(3MLIB), mlib_SignalLPC2Cepstral_F32(3MLIB), attributes(5)

SunOS 5.10							    10 Nov 2004 				mlib_SignalLPC2Cepstral_F32(3MLIB)