FilteredExcitation_G729

Computes filtered exitation.

Syntax

IppStatus ippsFilteredExcitation_G729_32f(const Ipp32f* pSrcImpulseResponse, Ipp32f* pSrcDstPastExc, Ipp32f valExc, Ipp32s len);

Parameters

pSrcImpulseResponse

Impulse response [len].

pSrcDstPastExc

Pointer to the previous and updated excitation vector [len].

valExc

Excitation

len

Length.

Description

The function ippsFilteredExcitation_G729 is declared in the ippsc.h file.The function computes filtered excitation using following formula:

pSrcDstPastExc[i] = SrcDstPastExc[i-1] + valExc* pSrcImpulseResponse[i],

pSrcDstPastExc[0] = valExc ,

where i= len - 1, ..., 1.

Return Values

ippStsNoErr

Indicates no error.

ippStsNullPtrErr

Indicates an error when one of the specified pointers is NULL.

ippStsSizeErr

Indicates an error when len is less than or equal to zero.

Submit feedback on this help topic

Copyright © 2000 - 2010, Intel Corporation. All rights reserved.