Normalize

plugin_id: normalize · UI: Normalisierung · Source: plugins/normalize.py

Peak-normalizes a stream to a target peak level (linear 0..1). This is a gain-only operation (no dynamics).

Parameters

Parameter	Type	Default	Range	Meaning
target_peak	float	0.999	0..1	Target peak amplitude (dBFS ≈ 0 at 1.0).

Algorithm

peak = max(abs(x))                 # across all samples and channels
if peak is ~0: return x
gain = target_peak / peak
return x * gain

Implementation notes

• Multi-channel: a single gain factor is computed from the global peak to preserve stereo balance.
• If the signal is silent (peak ≤ 1e-12), the input is returned unchanged.
• Intended for offline use; does not add latency.

References

• U. Zölzer (ed.), DAFX: Digital Audio Effects, 2nd ed., Wiley, 2011. ISBN 978-0-470-66599-2. (Normalization and basic level operations.)