To enable conversion between a human first modality or sensation and a second modality or sensation while preserving a geometric structure.SOLUTION: A computer embeds a received signal in a first modality, re-embeds the received signal embedded in the first modality into a signal in a second modality, and produces an output in the second modality. Rendering, embedding, re-embedding, and generating the signal of the second modality configured to be perceived based on the output becomes a method for applying a trained model, by performing a hostile learning operation related to identifying a real example of target distribution from the generated output, and performing a metric learning operations related to producing an output having a perceived distance.SELECTED DRAWING: Figure 1
METHOD, PROGRAM, AND DEVICE