ISFQuantDTX

Quantizes the ISF coefficient vector in case of DTX mode.

Syntax

IppStatus ippsISFQuantDTX_AMRWB_16s(const Ipp16s* pSrcIsf, Ipp16s* pDstQntIsf, Ipp16s* pDstIdxs);

Parameters

pSrcIsf	Pointer to the unquantized 16-element ISF vector in the frequency domain (0..0.5) .
pDstQntIsf	Pointer to the 16-element quantized ISF vector.
pDstIdxs	Pointer to the 5-element vector quantization indices.

Description

This function is declared in ippsc.h file. The function quantizes the averaged ISF coefficient vector using the comfort noise ISF quantization tables.

Return Values

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