How can re-encoding and conversion shape an audio file’s history? Explore containers, codecs, resampling and double-encoding traces, with examples showing why an uncompressed WAV does not necessarily represent the original recording.
Clipping, compression, aliasing, packet loss and processing can leave different artifacts in recordings. This guide explains their causes and how to assess them without treating every unusual sound as evidence of editing.
Stream copy, decoding to PCM and re-encoding produce different relationships between an audio derivative and its source video. Learn what each operation preserves, what can change and why keeping the source video matters.
Read a spectrogram by distinguishing time, frequency and level, then examine harmonics, noise and transients. The guide explains how display settings affect interpretation and why a visual pattern alone is not a forensic conclusion.