# Cymatics × Spectrogram — composed image prompt
# IndexStyle — https://indexstyle.org/compose?ids=cymatics+spectrogram
# Cymatics carries the structure. Spectrogram appear as accents, each further back than the last.
# Style descriptors only. Never imitates a specific artist, studio, brand or work.

An original image that takes its structure from Cymatics (Technique, 1787–) and its accent from Spectrogram (Technique, 1940s–). Structural cues: Chladni figures; Standing waves in sand and powder; A pattern for every frequency; The directness of the apparatus. Accent cues, used sparingly: The time-frequency plane; Intensity as shading; Voiceprint patterns; Hidden-image play. Composition: Center the clamped point, view from where symmetry appears. Type and lettering: Fine dry powder, spread as a single thin layer on the plate. Let one material quality come from the second style: A colormap rising monotonically in lightness, never rainbow. Mood: Technology, Exhilaration, Calm, Play. Color: build on #e9e6dd, #67635d, #171615 with a single accent drawn from #e9e6dd, #67635d, #171615. Constraints: do not imitate, reference or name any specific artist, studio, brand, character or copyrighted work. Produce an original composition in the general period languages described above.

# Where the two fight
# - Both belong to Diagrammatic Expression, so the difference is small. Push the roles further apart than feels comfortable.
# - Two techniques rather than two looks. Decide which one runs last in the process, because that is the one that will show.
# - Roughly 153 years apart. Keep one of them recognisably period rather than letting both drift into the middle.

# Cautions carried from each entry
# - Cymatics: Sweeping the frequency for a good looking video never lets a figure settle, and the central claim about sound and form fails to land.
# - Spectrogram: Drawing without choosing a window length skews the tradeoff between time and frequency resolution, and artifacts get read as real features.

# Design specs: https://indexstyle.org/styles/cymatics/design.md · https://indexstyle.org/styles/spectrogram/design.md