I'm going to implement denoiser and echo canceller for my VoIP application using IPP libraries.
I found that noiser reduction level can be configured in EC settings. Also there is a noise reduction
filter object in IPP. I'm a little bit confused about this. Can I use only echo canceller, specifying noise
reduction level, or it is better to use EC to cancel echo and than NR filter to denoiseaudio data?
The IPP noise reduction functions are engaged both in the USC NR sample application and in IPP AEC.
IPP AEC performs ippsNrHigh mode of noise reduction as default ("-nr 4" option)."-nlp 1-a sb" options recommended.
Already tried both aproaches. AEC noise reduction works very wellin casenr_smooth=0.
If nr_smooth is not 0 voice quality is very bad. NR filter seems to support only 8 KHz sampling
rate. Is there any way to use NR filter on 16 KHz sampling rate?