VAD_AMRWB

Performs VAD in AMR WB encoder.

Syntax

IppStatus ippsVAD_AMRWB_16s(const Ipp16s* pSrcSpch, IppsVADState_AMRWB_16s* pSrcDstVadState, Ipp16s* pToneFlag, Ipp16s* pVadFlag);

Parameters

pSrcSpch	Pointer to the input speech signal, of length 320.
pSrcDstVadState	Pointer to the VAD memory.
pToneFlag	Pointer to the output tone flag.
pVadFlag	Pointer to the VAD flag of this frame.

Description

This function is declared in ippsc.h file. The function ippsVAD_AMRWB implements the Voice Activity Decision (VAD) functionality of the AMR WB encoder. This function is used to indicate whether the input speech frame contains active speech or some other audio signal such as silence or music. The structure IppsVADState_AMRWB_16s contains the VAD history and is updated in the function. This structure must be initialized in advance by using the function ippsVADInit_AMRWB.

Return Values

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