DynamicsModerate signal
Dynamic range
The spread between the quietest and loudest meaningful passages of a recording.
Where crest factor is a short-window measurement, dynamic range describes the whole piece: does the second chorus actually hit harder than the first verse, or has everything been levelled to the same loudness?
Automatic generation with automatic mastering tends to produce arrangements that are dynamically flat at the macro scale. Human records vary enormously by genre — a jazz trio and a metal record are not comparable — so the measurement is only interpretable alongside the rest of the evidence.
How this tool uses it
Measured across the full file and across segments; feeds both the score and the confidence estimate.
What else produces the same reading
- Genre. Electronic and pop production is legitimately flat.
- Streaming loudness normalisation.
- Short clips, which may not contain a dynamic contrast at all.