NS and BE(SR) in one model design

[xxoospring]

Is it possible to change the multiplicative design of the mask for noise suppression/dereverb to a residual design like the band-width extension, e.g. replace the activation function of the last layer of the amplitude spectrum decoder with prelu or leakyrelu?

[yxlu-0102]

In speech bandwidth extension, the residual design is typically applied to the logarithmic amplitude spectrum, which is equivalent to masking the amplitude spectrum. While it's theoretically possible to directly apply the residual design to the amplitude spectrum, why don't just use the amplitude spectrum mapping or the complex spectrum mapping, which are both common practices.