CMU School of Drama


Wednesday, February 25, 2026

Free Spectral Synthesizer For Mac, Phosphor, Turns Images Into Audio

Synthtopia: Spectral synthesis is very different from other types of synthesis. It builds on the idea that audio can be represented as a spectrogram, an image where time runs left to right, frequency runs bottom to top, and brightness represents loudness. A bass note is a bright horizontal line near the bottom. A siren is a diagonal streak. A snare is a vertical column.

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