Q about the data generation!

[yujiacheng333]

How to generate "original clean signal" as training target when the distance of speaker to mac is not fixed?
I have tried to use h(f)=\aplha\exp{-1j 2 \pi f d/c} (a impulse response in TD), fftconvolve with clean speech signal as direct path label signal. However, my small ConvTasNet dose not work well with this data generation method. Can you give me some suggestion about this question? Thank you very much.