BandJoin_AMRWBE

Joins the low and high frequency signals.

Syntax

IppStatus ippsBandJoin_AMRWBE_16s(const Ipp16s* pSrcSig2k, const Ipp16s* pSrcSigHi, Ipp16s* pDstSignal, int len);

Parameters

pSrcSig2k	Pointer to the source low frequency vector [len5/32 + 210].
pSrcSigHi	Pointer to the source high frequency vector [len].
pDstSignal	Pointer to the destination vector [len].
len	Length of the sample.

Description

The function ippsBandJoin_AMRWBE is declared in ippsc.h file. This function performs operation that is the inverse of the encoder band-splitting operation described in the decsription of the function ippsBandSplit_AMRWBE, that is the source low frequency signal pSrcSig2k is oversampled with factor 32/5 and then combined with the source high frequency signal pSrcSigHi. The result is store in the vector pDstSignal.

See also 3GPP TS 26.290: “Extended AMR Wideband Speech Codec; Transcoding functions", clauses 6.3.4 [AMRWB+].

Return Values

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 zero.