Dynamic range compressor settings and state. More...

#include <lib/audio/mixer.h>

Data Fields
float	threshold_dB
	Compression threshold in dB (e.g., -10.0)

float	knee_dB
	Knee width in dB for soft knee (e.g., 2.0)

float	ratio
	Compression ratio (e.g., 4.0 for 4:1 compression)

float	attack_ms
	Attack time in milliseconds (how fast compression kicks in)

float	release_ms
	Release time in milliseconds (how fast compression releases)

float	makeup_dB
	Makeup gain in dB (compensates for gain reduction)

float	sample_rate
	Sample rate in Hz (set during initialization)

float	envelope
	Current envelope follower state (linear, 0-1)

float	gain_lin
	Current gain multiplier (linear, calculated from envelope)

float	attack_coeff
	Attack coefficient (converted from attack_ms)

float	release_coeff
	Release coefficient (converted from release_ms)

Detailed Description

Dynamic range compressor settings and state.

Implements professional-quality dynamic range compression to prevent clipping and maintain consistent output levels. Uses sidechain input for gain reduction calculation.

COMPRESSION BEHAVIOR:

Acts above threshold_dB (no compression below threshold)
Applies compression ratio (e.g., 4:1 reduces 4dB above threshold to 1dB)
Soft knee provides smooth compression curve transition
Independent attack/release times for natural sound
Makeup gain compensates for gain reduction

Note: All time-based parameters (attack_ms, release_ms) are converted to coefficients internally for sample-by-sample processing.

Definition at line 137 of file mixer.h.

The documentation for this struct was generated from the following file:

mixer.h

Data Fields

Detailed Description