AI Co-design: Building a Super-Dense Electronic Music Compressor in a Day

The author, who had long wanted to build a super-dense electronic music compressor, used the ChatGPT o3 model to design and prototype the entire system in just one day. Through iterative conversation, they designed a phase-aware spectrogram-based generative model that reconstructs spectrograms from a small number of reusable patterns and a sparse occurrence list. The key is that occurrences are represented by two unit complex numbers whose phases map to continuous coordinates, allowing patterns to be placed anywhere, achieving extremely high compression rates. This experiment demonstrates how AI can accelerate research, turning long-standing ideas into tangible results quickly.