sunos man page for mlib_signallpc2lsp_s16

Query: mlib_signallpc2lsp_s16

OS: sunos

Section: 3mlib

Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar

mlib_SignalLPC2LSP_S16(3MLIB)				    mediaLib Library Functions				     mlib_SignalLPC2LSP_S16(3MLIB)

NAME
mlib_SignalLPC2LSP_S16 - convert linear prediction coefficients to line spectral pair coefficients
SYNOPSIS
cc [ flag... ] file... -lmlib [ library... ] #include <mlib.h> mlib_status mlib_SignalLPC2LSP_S16(mlib_s16 *lsp, const mlib_s16 *lpc, mlib_s32 lscale, mlib_s32 order);
DESCRIPTION
The mlib_SignalLPC2LSP_S16() function converts linear prediction coefficients to line spectral pair coefficients. The line spectral pair (LPS) coefficients are defined as the roots of the following two polynomials: -(M+1) -1 P(z) = A(z) + z * A(z ) -(M+1) -1 Q(z) = A(z) - z * A(z ) where A(z) is the inverse filter M -i A(z) = 1- SUM a(i) * z i=1 Note that since P(z) is symmetric and Q(z) is antisymmetric all roots of these polynomials are on the unit circle and they alternate each other. P(z) has a root at z = -1 (w = PI) and Q(z) has a root at z = 1 (w = 0). The line spectral frequency (LPF) are the angular frequency of the line spectral pair (LPS) coefficients. q = cos(w) where q is the LPS and w is the LPF. See Fundamentals of Speech Recognition by Lawrence Rabiner and Biing-Hwang Juang, Prentice Hall, 1993.
PARAMETERS
The function takes the following arguments: lsp The line spectral pair coefficients in Q15 format. lpc The linear prediction coefficients. lscale The scaling factor of the linear prediction coefficients, where actual_data = input_data * 2**(-scaling_factor). 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_SignalLSP2LPC_S16(3MLIB), attributes(5) SunOS 5.10 10 Nov 2004 mlib_SignalLPC2LSP_S16(3MLIB)
Related Man Pages
mlib_signallpc2cepstral_s16(3mlib) - sunos
mlib_signallpc2cepstral_s16_adp(3mlib) - sunos
mlib_signallpc2lsp_f32(3mlib) - sunos
mlib_signallsp2lpc_f32(3mlib) - sunos
mlib_signallpc2lsp_s16(3mlib) - opensolaris
Similar Topics in the Unix Linux Community
SpecEd 0.2 (Default branch)
Geek&amp;Poke Predicts - Part 1: Microblogging 2014
Trends Of The Second Decade - Part 1
change the year in the event prediction market
Programming using sklearn