mlib_signallpcperceptweight_f32(3mlib) [opensolaris man page]
mlib_SignalLPCPerceptWeight_F32(3MLIB) mediaLib Library Functions mlib_SignalLPCPerceptWeight_F32(3MLIB) NAME
mlib_SignalLPCPerceptWeight_F32 - perform perceptual weighting on input signal SYNOPSIS
cc [ flag... ] file... -lmlib [ library... ] #include <mlib.h> 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 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. 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. 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 attributes: +-----------------------------+-----------------------------+ | 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 2 Mar 2007 mlib_SignalLPCPerceptWeight_F32(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 |Committed | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+ SEE ALSO
mlib_SignalLPCPerceptWeightInit_S16(3MLIB), mlib_SignalLPCPerceptWeightFree_S16(3MLIB), attributes(5) SunOS 5.11 2 Mar 2007 mlib_SignalLPCPerceptWeight_S16(3MLIB)