Communication-channel random disturbances {noise} can happen at encoding or decoding and interfere with selecting correct symbol from possible symbols. Noise decreases information. More noise requires more redundancy, to overcome information loss by adding information. Codes {error correcting code} can correct errors automatically, by adding information to overcome noise.
Sounds can have loudness related to frequency reciprocal {1 over f noise} {1/f noise}, which is music, time-measurement, flow, and other rhythmic-event noise. 1/f noise is self-symmetric and fractal.
Sounds can have loudness related to frequency-squared reciprocal {1 over f squared noise} {1/f^2 noise}, which is music noise. 1/f^2 noise is self-symmetric and fractal.
Sounds {white noise}| can be purely random and not depend on loudness or frequency.
Outline of Knowledge Database Home Page
Description of Outline of Knowledge Database
Date Modified: 2022.0225