SubbandControllerUpdate

Updates controller state and returns the step sizes.

Syntax

IppStatus ippsSubbandControllerUpdate_EC_32f(const Ipp32f* pSrcRin, const Ipp32f* pSrcSin, const Ipp32fc** ppSrcRinSubbandsHistory, const Ipp32fc* pSrcSinSubbands, double* pDstStepSize, IppsSubbandControllerState_EC_32f* pState);

IppStatus ippsSubbandControllerUpdate_EC_16s(const Ipp16s* pSrcRin, const Ipp16s* pSrcSin, const Ipp32sc** ppSrcRinSubbandsHistory, const Ipp32sc* pSrcSinSubbands, IppAECScaled32s* pDstStepSize, IppsSubbandControllerState_EC_16s* pState);

Parameters

pState	Pointer to to the subband controller state structure.
pSrcRin	Pointer to receive-in signal frame.
pSrcSin	Pointer to send-in signal frame. Frame size is specified in the function ippsSubbandControllerInit_EC.
ppSrcRinSubbandsHistory	Pointer to an array of pointers to the most recent receive-in blocks. Size of the array is equal to numSegments specified in the function ippsSubbandControllerInit_EC.
pSrcSinSubbands	Pointer to subband representation of send-in signal frame (or NULL). Size of the array is equal to numSubbands specified in the function ippsSubbandControllerInit_EC.
pDstStepSize	Pointer to the vector of step sizes. Vector length is equal to numSubbands specified in the function ippsSubbandControllerInit_EC.

Description

The functions ippsSubbandControllerUpdate_EC are declared in the ippsc.h file. These functions update the internal state of the subband controller and return the step size values for further use in the adaptation of the coefficients.

Return Values

ippStsNoErr	Indicates no error.
ippStsNullPtrErr	Indicates an error when one of the specified pointers is NULL.