DISTORTION meaning: 1. a change to the intended or true meaning of something: 2. a change to the original or natural…. Learn more. Distortion is the alteration of the original shape or characteristic of a signal, such as an audio or video signal. Learn about different types of distortion, such as amplitude, harmonic, frequency and phase distortion, and how they affect signal processing and communication. Definition of distortion noun from the Oxford Advanced Learner's Dictionary. a change in the shape, appearance or sound of something so that it is strange or not clear. Distortion of sound is a common problem with cheap amps. a change in facts, ideas, etc. that makes them no longer correct or true. Various types of distortion exist, including harmonic distortion, intermodulation distortion, and frequency distortion. Harmonic distortion occurs when additional harmonics are introduced to the original signal, often due to non-linear effects in audio equipment.
