HighPassFilter

Performs high-pass filtering of the input speech signal.

Syntax

IppStatus ippsHighPassFilter_GSMFR_16s (const Ipp16s* pSrc, Ipp16s* pDst, int len, int* pMem);

pSrc	Pointer to the source speech vector [len].
pDst	Pointer to the destination filtered vector [len].
len	Length of the source and destination vectors.
pMem	Pointer to the filter memory vector [2].

The function ippsHighPassFilter_GSMFR is declared in ippsc.h file. This function filters the input speech signal according to the transfer function:

H(z) = 0.5(1 - z^-1 /(1 - α*z^-1)

where α = 0.99899.

The initial filter memory will be set to zero.

ippStsNoErr	Indicates no error.
ippStsNullPtrErr	Indicates an error when one of the specified pointer is NULL.
ippStsSizeErr	Indicates an error when len is less than or equal to 0.