If you have ever edited sound which was badly recorded, you have probably used a denoiser of some sort. And if there was a lot of noise to be removed (I recently received an interview recorded during heavy rain, with the request to remove the sound of the rain and no, I am not joking), you know the side effects such a treatment can have. 

Looking at them from another perspective, these side effects we try to avoid most of the time can sound pretty interesting themselves. Richard Eigner from Austria created his project Denoising Field Recordings based on this idea. He made recordings of particularly noisy environments and used denoising techniques to create the material for his compositions.