QMFDecode

Performs QMF synthesis of recovered samples.

Syntax

IppStatus ippsQMFDecode_G722_16s (const Ipp16s* pSrc, Ipp16s* pDst, int len, Ipp16s* pDelay);

Parameters

pSrc	Pointer to the input vector that contains decoded low-band and high-band portions of the recovered samples.
pDst	Pointer to the 16-bit linear PCM speech output vector.
len	The length of input/output vectors, must be a multiple of two.
pDelay	Pointer to the buffer of a delay line.

Description

The function ippsQMFDecode_G722_16s is declared in the ippsc.h file.

This function performs Quadrature Mirror Filter (QMF) synthesis of the low-band and high-band portions of the recovered samples to reconstruct the output signal. Computations are done in accordance with ITU-T Recommendation G.722.

Return Values

ippStsNoErr	Indicates no error.
ippStsBadArgErr	Indicates an error when len is than less or equal to 0.
ippStsSizeErr	Indicates an error when len is not a multiple of two.
ippStsNullPtrErr	Indicates an error when one of the specified pointers is NULL.