OBSERVATION CHAMBER / ACTIVE
Compare a continuously rotating signal with discrete samples and observe forward, frozen, or reversed readings caused by Nyquist and exposure ambiguity.
TIME / ALIASING
Compare continuous motion with the observations left by a finite sampling rate.
TRUE CONTINUOUS MOTION is the moving phase at the true frequency f₀. SAMPLED OBSERVATIONS are the points recorded at rate fₛ. Exposure averages motion during each sample; jitter is a percentage of one sample interval (Ts) that shifts the sample time. The wrapped phase error uses a ±180° boundary; crossing it changes the visible alias relation.
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OBSERVATION CONTRACT
This browser-local model compares a continuous phase with finite observations. It does not evaluate ability, timing skill, accuracy, attention, health, or any person. No camera, microphone, audio input, external API, or uploaded signal is used.
WHAT TO WATCH
MODEL NOTE
falias = f0 − kfs, with k chosen for the nearest observable band. The sign shows the visible direction of the sampled motion.
The Nyquist frequency is fs/2. Exposure applies a finite-window gain, jitter perturbs sample times as a ratio of Ts, and a wrapped phase difference is read across its ±180° boundary. This is a visual model, not a measurement of real-world accuracy.
This chamber visualizes sampling and exposure ambiguity. It does not score, rank, or evaluate visual acuity, timing ability, attention, or personal traits.
This chamber belongs to Signals & Networks.
SIGNAL Back to Signals & Networks Route.