EnvelopTime

Computes the time envelope parameters.

Syntax

IppStatus ippsEnvelopTime_G7291_16s(const Ipp16s* pSrc, Ipp16s nls, Ipp16s* pDstEnvelopTime, int subFrame);

Parameters

pSrc	Pointer to the original highband input signal [10*subFrame].
nls	Normalization of the input signal.
pDsEnveloptTime	Pointer to the output time envelope parameters [subFrame].
subFrame	Number of consecutive subframes in pSrc.

Description

The function ippsEnvelopTime_G7291 is declared in the ippsc.h file. This function calculates the time envelope parameters as logarithmic subframe energies. See [ITU7291] section 6.5.1.

Return Values

ippStsNoErr	Indicates no error.
ippStsNullPtrErr	Indicates an error when one of the specified pointers is NULL.
ippStsRangeErr	Indicates an error when subFrame is less than 0.