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sivakrishna_a_
Beginner
62 Views

Will Noise Reduction supports 16Khz sampling frequancy for audio

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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2 Replies
Sergey_K_Intel
Employee
62 Views

Hi,

Which functions do you use for NR ?

Regards,
Sergey 

sivakrishna_a_
Beginner
62 Views

ippsConvert_16s32f_Sfs(&pShort, 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,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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