The mix gain setting question

[sailor88128]

Hi,
Thanks for the terrific work.
Here is a question about mix gain, in denoise.c.
I notice the denoise effect is too strong, and speech_gain and noise_gain are set as below. So if there may be a distortion problem when these two audio mixed or when handle the audio in reality?

    speech_gain = pow(10., (-40+(rand()%60))/20.);  // 0.01~10
     noise_gain = pow(10., (-30+(rand()%50))/20.);  // 0.06~10