Spectrogram
スペクトログラム / 1940s– / Technique / Diagrammatic Expression
Sound mapped onto a plane of time, frequency and intensity. From birdsong research to the DAW screen, the standard way of seeing the shape of sound — complete with artists hiding pictures inside it.
The time-frequency plane / Intensity as shading / Voiceprint patterns / Hidden-image play
Dictionary entry
- Best used for
- Comparing primary sources and canonical works · Extracting principles that transfer to other media
- Type
- Observe the letters, signs and scale of reference works
- Composition
- Extract the one structure that governs gaze and information
- Material
- Verify the materials and behaviors specific to era, region and process
- Caution
- Don't reduce it to surface signs. Verify the context of era, region, technology and makers.
- Further study
- Bell Labs voiceprint research / ornithology's sonograms / Aphex Twin's hidden faces