What is an undesirable alteration in the original waveform of an audio or video signal?

Distortion is an undesirable alteration in the original waveform of an audio or video signal as it refers to any change that modifies the original signal's characteristics. This can result from various factors such as improper signal routing, clipping due to excessive amplification, or using low-quality equipment. When distortion occurs, the clarity and integrity of the sound or image are compromised, leading to a less accurate representation of the original recording.

In the context of audio, distortion can make music or speech sound harsh, unclear, or unrecognizable, affecting the listener's experience negatively. In video signals, distortion can lead to issues like warping or blurriness, preventing a clear visual output. Recognizing distortion is crucial for maintaining high-quality audio and video performance in any AV system. This understanding helps professionals troubleshoot and ensure optimal performance in different audio and video setups.