Will Noise Reduction supports 16Khz sampling frequancy for audio

Will Noise Reduction supports 16Khz sampling frequancy for audio

sivakrishna a.的头像

Hi,

        I am using AAC audio codec for my application, when i apply filter for the application the voice was getting disorted and not clear, when we used the Noise Reduction filter for G729, it is good, but when i use Noise Reduction filter for AAC it is getting disorted

For G729 sampling frequancy is 8000

For AAC sampling frequancy is 16000

Will Noise Reduction Filter support 16Khz sampling frequancy or not? if so , what are the changes need to be done from AAC.

 

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Sergey Khlystov (Intel)的头像

Hi,

Which functions do you use for NR ?

Regards,
Sergey 

Regards, Sergey
sivakrishna a.的头像

ippsConvert_16s32f_Sfs(&pShort[i], wBuf, 16, 0);

ippsFilterNoiseDetect_EC_32f64f(wBuf,&pwr,&foo,&flag,pNRState);

nmode = flag?ippsNrUpdateAll:ippsNrUpdate;
        ippsFilterNoise_EC_32f_I(wBuf,nmode,pNRState);
        ippsConvert_32f16s_Sfs(wBuf, &pShort[i],16,ippRndZero, 0);

As G729I supports 8Khz sampling frequancy max, we are initializing it with 8000

ippsFilterNoiseInit_EC_32f(IPP_PCM_FREQ_8000, pNRState);

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