Adynamicequalizer

Audio Single output Transform

Apply Dynamic Equalization of input audio.

FFmpeg filter: adynamicequalizer — the official reference.

Add it to a graph. The explicit form works for every filter — bind it to its input and read the result from outputs():

$node   = $audio->addFilter(new Adynamicequalizer(…));
$result = $node->outputs()[0];

Shorthand. Single-output filters can skip the node — apply() returns the result stream directly:

$result = $audio->apply(new Adynamicequalizer(…));

When to use it

TODO — when this filter shines: what it’s the right tool for, what to reach for instead when it isn’t, and how it composes with neighbouring filters.

How to use it

TODO — prose: how the filter actually works and what its key parameters mean (the explanation FFmpeg’s terse option help omits).

Examples

TODO — runnable PHP, with the equivalent ffmpeg CLI alongside.

Gotchas

TODO

See also

TODO

Parameters

Parameter	Type	Default	Range / values	Description
threshold	float	0	0–100	set detection threshold
dfrequency	float	1000	2–1000000	set detection frequency
dqfactor	float	1	0.001–1000	set detection Q factor
tfrequency	float	1000	2–1000000	set target frequency
tqfactor	float	1	0.001–1000	set target Q factor
attack	float	20	0.01–2000	set detection attack duration
release	float	200	0.01–2000	set detection release duration
ratio	float	1	0–30	set ratio factor
makeup	float	0	0–1000	set makeup gain
range	float	50	1–2000	set max gain
mode	AdynamicequalizerMode	cutbelow	listen, cutbelow, cutabove, boostbelow, boostabove	set mode
dftype	AdynamicequalizerDftype	bandpass	bandpass, lowpass, highpass, peak	set detection filter type
tftype	AdynamicequalizerTftype	bell	bell, lowshelf, highshelf	set target filter type
auto	AdynamicequalizerAuto	off	disabled, off, on, adaptive	set auto threshold
precision	AdynamicequalizerPrecision	auto	auto, float, double	set processing precision

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Maps to FFmpeg’s adynamicequalizer filter. Verified against ffmpeg n7.1.1.