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mlib_signallpcperceptweightfree_f32(3mlib) [sunos man page]

mlib_SignalLPCPerceptWeightFree_S16(3MLIB)		    mediaLib Library Functions			mlib_SignalLPCPerceptWeightFree_S16(3MLIB)

NAME
mlib_SignalLPCPerceptWeightFree_S16, mlib_SignalLPCPerceptWeightFree_F32 - clean up for perceptual weighting SYNOPSIS
cc [ flag... ] file... -lmlib [ library... ] #include <mlib.h> void mlib_SignalLPCPerceptWeightFree_S16(void *state); void mlib_SignalLPCPerceptWeightFree_F32(void *state); DESCRIPTION
Each of these functions frees the internal state structure for perceptual weighting of linear predictive coding (LPC). This function cleans up the internal state structure and releases all memory buffers. PARAMETERS
Each of the functions takes the following arguments: state Pointer to the internal state structure. RETURN VALUES
None. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Evolving | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+ SEE ALSO
mlib_SignalLPCPerceptWeightInit_S16(3MLIB), mlib_SignalLPCPerceptWeightInit_F32(3MLIB), mlib_SignalLPCPerceptWeight_S16(3MLIB), mlib_Sig- nalLPCPerceptWeight_F32(3MLIB), attributes(5) SunOS 5.10 9 Nov 2004 mlib_SignalLPCPerceptWeightFree_S16(3MLIB)

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mlib_SignalLPCPerceptWeight_S16(3MLIB)			    mediaLib Library Functions			    mlib_SignalLPCPerceptWeight_S16(3MLIB)

NAME
mlib_SignalLPCPerceptWeight_S16 - perform perceptual weighting on input signal SYNOPSIS
cc [ flag... ] file... -lmlib [ library... ] #include <mlib.h> mlib_status mlib_SignalLPCPerceptWeight_S16(mlib_s16 *sigwgt, const mlib_s16 *signal, const mlib_s16 *lpc, mlib_s32 lscale, mlib_s16 r1, mlib_s16 r2, void *state); DESCRIPTION
The mlib_SignalLPCPerceptWeight_S16() function performs perceptual 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, the signal samples are in Q15 format. signal The input signal vector, the signal samples are 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). r1 The perceptual weighting filter coefficient, the coefficient is in Q15 format, it is treated as 1 if 0 is supplied. r2 The perceptual weighting filter coefficient, the coefficient is in Q15 format, 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 attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Evolving | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+ SEE ALSO
mlib_SignalLPCPerceptWeightInit_S16(3MLIB), mlib_SignalLPCPerceptWeightFree_S16(3MLIB), attributes(5) SunOS 5.10 10 Nov 2004 mlib_SignalLPCPerceptWeight_S16(3MLIB)

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