RNNoise: Learning Noise Suppression
Oddly, I found the RNNoise suppression more distracting than the less sophisticated Speex suppressor.  If you'll forgive the figurative language; compared with the noisy tracks, speex de-emphasises the noise into a quieter but smoother robotic 'bokeh', which allowed me to concentrate on the main speakers.<p>RNNoise on the other hand seemed to detect silences well, but left artifacts in the speech such that it had a choppy and artificial feel.  Lacking the smoothness in the background I found I was more distracted by the distortions in the words.