2026-08-30 // Spectrograms Case Study
A spectrogram is a visual representation of the spectrum of frequencies of a signal over time. Spectrograms, especially in audio signals, are an extremely common technique used in ARGs and puzzle hunts. They are so common that, on their own, they present virtually no challenge to those with a modicum of ARG experience. This article serve as a case study of my exploration of the medium of spectrograms and dives into ways to increase variety and difficulty in spectrogram-based puzzles.