Would the non-linear mapping actually produce aliasing though, since it's in the discrete time domain? My understanding is that you only get aliasing when conv

Would the non-linear mapping actually produce aliasing though, since it's in the discrete time domain? My understanding is that you only get aliasing when converting from analog to digital. While the discrete time sequence does map to higher frequency components (imaging) I would think this would need be filtered in the analog domain (the speaker's D2A converter)